{"id":11922,"date":"2026-09-15T09:40:55","date_gmt":"2026-09-15T09:40:55","guid":{"rendered":"https:\/\/lead-pcb.com\/?p=11922"},"modified":"2026-09-16T07:24:58","modified_gmt":"2026-09-16T07:24:58","slug":"what-is-gnd","status":"publish","type":"post","link":"https:\/\/lead-pcb.com\/ja\/blog\/what-is-gnd\/","title":{"rendered":"GND\u3068\u306f\uff1f\u610f\u5473\u3001\u7a2e\u985e\u3001PCB\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u89e3\u8aac"},"content":{"rendered":"<p class=\"wp-block-paragraph\">GND\u306f\u3001\u307b\u307c\u3059\u3079\u3066\u306e\u56de\u8def\u56f3\u3001PCB\u3001\u96fb\u6e90\u88c5\u7f6e\u3001\u96fb\u5b50\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u767b\u5834\u3057\u307e\u3059\u3002\u300c0\u30dc\u30eb\u30c8\u300d\u3084\u300c\u30de\u30a4\u30ca\u30b9\u7aef\u5b50\u300d\u3068\u8aac\u660e\u3055\u308c\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u304c\u3001\u3069\u3061\u3089\u306e\u8aac\u660e\u3082\u5e38\u306b\u6b63\u3057\u3044\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u96fb\u5b50\u56de\u8def\u306b\u304a\u3044\u3066\u3001 <strong>GND\u306fGround\uff08\u30b0\u30e9\u30a6\u30f3\u30c9\uff09\u306e\u7565\u3067\u3059<\/strong>\u3002\u4ed6\u306e\u96fb\u5727\u3092\u6e2c\u5b9a\u3059\u308b\u969b\u306e\u57fa\u6e96\u30ce\u30fc\u30c9\u3067\u3042\u308a\u3001\u591a\u304f\u306e\u56de\u8def\u3067\u306f\u3001\u96fb\u6d41\u304c\u96fb\u6e90\u3078\u623b\u308b\u7d4c\u8def\u306e\u4e00\u90e8\u3067\u3082\u3042\u308a\u307e\u3059\u3002\u56de\u8def\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u306f\u7269\u7406\u7684\u306a\u5927\u5730\u306b\u63a5\u7d9a\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u5fc5\u305a\u3057\u3082\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001PCB\u306e\u8a2d\u8a08\u3001\u8a66\u9a13\u3001\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\"><strong>\u8981\u70b9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>GND\u306f\u30b0\u30e9\u30a6\u30f3\u30c9\u3092\u610f\u5473\u3057<\/strong>\u3001\u901a\u5e38\u306f\u56de\u8def\u3067\u6307\u5b9a\u3055\u308c\u305f0 V\u57fa\u6e96\u30ce\u30fc\u30c9\u3092\u6307\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u96fb\u5727\u306f\u5e38\u306b2\u70b9\u9593\u3067\u6e2c\u5b9a\u3055\u308c\u307e\u3059\u3002GND\u306f\u3001\u305d\u306e\u6e2c\u5b9a\u306b\u5171\u901a\u306e\u57fa\u6e96\u3092\u4e0e\u3048\u307e\u3059\u3002<\/li>\n\n\n\n<li>GND\u306b\u306f\u5e30\u9084\u96fb\u6d41\u304c\u6d41\u308c\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u96fb\u6d41\u306f\u96fb\u6e90\u3078\u623b\u308b\u306e\u3067\u3042\u308a\u3001\u81ea\u52d5\u7684\u306b\u5927\u5730\u3078\u6d41\u308c\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li>\u56de\u8def\u30b0\u30e9\u30a6\u30f3\u30c9\u3001\u4fe1\u53f7\u30b0\u30e9\u30a6\u30f3\u30c9\u3001\u30b7\u30e3\u30fc\u30b7\u30b0\u30e9\u30a6\u30f3\u30c9\u3001\u4fdd\u8b77\u63a5\u5730\u306f\u305d\u308c\u305e\u308c\u5f79\u5272\u304c\u7570\u306a\u308a\u3001\u76f8\u4e92\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u308b\u3082\u306e\u3068\u3057\u3066\u6271\u3046\u3079\u304d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li>GND\u306f\u672c\u8cea\u7684\u306b\u30d7\u30e9\u30b9\u3067\u3082\u30de\u30a4\u30ca\u30b9\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u3002\u5358\u96fb\u6e90\u56de\u8def\u306e\u591a\u304f\u3067\u306f\u96fb\u6e90\u306e\u30de\u30a4\u30ca\u30b9\u7aef\u5b50\u306b\u63a5\u7d9a\u3055\u308c\u307e\u3059\u304c\u3001\u5225\u306e\u69cb\u6210\u3082\u53ef\u80fd\u3067\u3059\u3002<\/li>\n\n\n\n<li>PCB\u3067\u306f\u3001\u9023\u7d9a\u3057\u305f\u4f4e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u304c\u3001\u5e30\u9084\u7d4c\u8def\u306e\u78ba\u4fdd\u3001\u30ce\u30a4\u30ba\u306e\u5236\u5fa1\u3001\u96fb\u78c1\u5e72\u6e09\u306e\u4f4e\u6e1b\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30a2\u30ca\u30ed\u30b0\u3068\u30c7\u30b8\u30bf\u30eb\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u3092\u5b89\u6613\u306b\u5206\u5272\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u96fb\u6d41\u7d4c\u8def\u3092\u691c\u8a0e\u3057\u3001\u90e8\u54c1\u30e1\u30fc\u30ab\u30fc\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u6307\u91dd\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u96fb\u5b50\u56de\u8def\u306b\u304a\u3051\u308bGND\u306e\u610f\u5473\u3068\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GND\u306f\u3001 <strong>ground\uff08\u30b0\u30e9\u30a6\u30f3\u30c9\uff09<\/strong>\u306e\u6a19\u6e96\u7684\u306a\u7565\u79f0\u3067\u3059\u3002\u56de\u8def\u3067\u306f\u901a\u5e38\u30010 V\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u305f\u30ce\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4ed6\u306e\u30ce\u30fc\u30c9\u306e\u96fb\u5727\u3092\u305d\u306e\u57fa\u6e96\u306b\u5bfe\u3059\u308b\u5024\u3068\u3057\u3066\u8868\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3068\u3048\u3070\u3001\u56de\u8def\u56f3\u3067\u96fb\u6e90\u30e9\u30a4\u30f3\u306b <code>+5 V<\/code>\u3068\u8a18\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u901a\u5e38\u306f\u305d\u306e\u30e9\u30a4\u30f3\u304c\u6307\u5b9a\u3055\u308c\u305fGND\u30ce\u30fc\u30c9\u3088\u308a5 V\u9ad8\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u30de\u30eb\u30c1\u30e1\u30fc\u30bf\u30fc\u3067\u306f\u3001+5 V\u30e9\u30a4\u30f3\u3068GND\u306e\u9593\u306e\u96fb\u4f4d\u5dee\u3092\u6e2c\u5b9a\u3057\u3066\u3001\u3053\u306e\u5024\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306f\u3001GND\u306e\u7d76\u5bfe\u96fb\u5727\u304c\u3069\u3053\u3067\u3082\u30bc\u30ed\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u96fb\u5727\u306f\u5e38\u306b2\u70b9\u9593\u306e\u5dee\u3067\u3059\u3002\u8a2d\u8a08\u8005\u306f\u3001\u6271\u3044\u3084\u3059\u3044\u30ce\u30fc\u30c9\u3092\u30ed\u30fc\u30ab\u30eb\u306a0 V\u57fa\u6e96\u3068\u3057\u3066\u9078\u3073\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u4ed6\u306e\u57fa\u6e96\u70b9\u3082\u3042\u308a\u5f97\u308b\u306a\u304b\u3067\u3001\u6a19\u9ad8\u3092\u6d77\u9762\u304b\u3089\u306e\u9ad8\u3055\u3067\u8868\u3059\u306e\u3068\u540c\u3058\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7c21\u6f54\u306b\u8a00\u3046\u3068<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>GND\u306f\u3001\u56de\u8def\u5185\u306e\u96fb\u5727\u30ec\u30d9\u30eb\u3092\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u308b\u5171\u901a\u306e\u57fa\u6e96\u30ce\u30fc\u30c9\u3067\u3059\u3002\u307e\u305f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u96fb\u6d41\u304c\u96fb\u6e90\u306b\u623b\u3063\u3066\u30eb\u30fc\u30d7\u3092\u5b8c\u7d50\u3059\u308b\u305f\u3081\u306e\u5e30\u8def\u306b\u3082\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\u306f\u5e38\u306b\u5927\u5730\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3044\u3044\u3048\u3002\u96fb\u6c60\u99c6\u52d5\u306e\u30bb\u30f3\u30b5\u30fc\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3001\u30c9\u30ed\u30fc\u30f3\u3001\u7d76\u7e01\u3055\u308c\u305f\u5236\u5fa1\u57fa\u677f\u306f\u3001\u571f\u58cc\u3084\u5efa\u7269\u306e\u4fdd\u8b77\u63a5\u5730\u7cfb\u306b\u5c0e\u96fb\u63a5\u7d9a\u3057\u306a\u304f\u3066\u3082\u52d5\u4f5c\u3057\u307e\u3059\u3002\u305d\u306eGND\u306f\u56de\u8def\u5185\u306e\u30ed\u30fc\u30ab\u30eb\u57fa\u6e96\u3067\u3042\u308a\u3001\u610f\u56f3\u7684\u306a\u5927\u5730\u63a5\u7d9a\u304c\u306a\u3044\u5834\u5408\u306f\u30d5\u30ed\u30fc\u30c6\u30a3\u30f3\u30b0\u30b0\u30e9\u30a6\u30f3\u30c9\u3068\u547c\u3070\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5927\u5730\u3092\u57fa\u6e96\u3068\u3059\u308b\u6a5f\u5668\u306f\u3053\u308c\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u88fd\u54c1\u306b\u3088\u3063\u3066\u306f\u3001\u5b89\u5168\u6027\u3001\u96fb\u78c1\u4e21\u7acb\u6027\u3001\u6e2c\u5b9a\u4e0a\u306e\u7406\u7531\u304b\u3089\u3001\u56de\u8def\u30b0\u30e9\u30a6\u30f3\u30c9\u3092\u30b7\u30e3\u30fc\u30b7\u307e\u305f\u306f\u4fdd\u8b77\u63a5\u5730\u306b\u610f\u56f3\u7684\u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002\u63a5\u7d9a\u65b9\u6cd5\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3001\u9069\u7528\u3055\u308c\u308b\u5b89\u5168\u8981\u4ef6\u3001EMC\u8a2d\u8a08\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u56de\u8def\u306bGND\u304c\u5fc5\u8981\u306a\u306e\u306f\u306a\u305c\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GND\u306b\u306f\u3001\u4e92\u3044\u306b\u95a2\u9023\u3059\u308b\u3044\u304f\u3064\u304b\u306e\u5f79\u5272\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u91cd\u8981\u6027\u306f\u56de\u8def\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u96fb\u5727\u306e\u57fa\u6e96\u3092\u4e0e\u3048\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">3.3 V\u306e\u3088\u3046\u306a\u8868\u8a18\u306f\u3001\u57fa\u6e96\u70b9\u304c\u308f\u304b\u3089\u306a\u3051\u308c\u3070\u5b8c\u5168\u306a\u610f\u5473\u3092\u6301\u3061\u307e\u305b\u3093\u3002\u307b\u3068\u3093\u3069\u306e\u30c7\u30b8\u30bf\u30eb\u56de\u8def\u3067\u306f\u30013.3 V\u306fGND\u3092\u57fa\u6e96\u3068\u3057\u305f3.3 V\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u30ed\u30b8\u30c3\u30af\u306e\u3057\u304d\u3044\u5024\u3001\u30a2\u30ca\u30ed\u30b0\u5165\u529b\u3001\u30bb\u30f3\u30b5\u30fc\u51fa\u529b\u3001\u96fb\u6e90\u30e9\u30a4\u30f3\u306f\u3001\u3059\u3079\u3066\u5171\u901a\u306e\u57fa\u6e96\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4fe1\u53f7\u7dda\u304c\u6b63\u3057\u304f\u63a5\u7d9a\u3055\u308c\u3066\u3044\u3066\u3082\u3001\u9069\u5207\u306a\u57fa\u6e96\u3092\u5171\u6709\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u308a\u3001\u57fa\u6e96\u96fb\u4f4d\u306e\u5dee\u306b\u8010\u3048\u3089\u308c\u308b\u3088\u3046\u8a2d\u8a08\u3055\u308c\u305f\u7d76\u7e01\u578b\u307e\u305f\u306f\u5dee\u52d5\u578b\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u3068\u3001\u63a5\u7d9a\u3055\u308c\u305f2\u3064\u306e\u30c7\u30d0\u30a4\u30b9\u9593\u3067\u901a\u4fe1\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u96fb\u6d41\u306e\u30eb\u30fc\u30d7\u3092\u5b8c\u6210\u3055\u305b\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u96fb\u6d41\u306f\u9589\u3058\u305f\u30eb\u30fc\u30d7\u3092\u6d41\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5358\u7d14\u306a\u76f4\u6d41\u56de\u8def\u3067\u306f\u3001\u6163\u7528\u96fb\u6d41\u306f\u96fb\u6e90\u306e\u6b63\u7aef\u5b50\u3092\u51fa\u3066\u3001\u8ca0\u8377\u3092\u901a\u308a\u3001GND\u3068\u8868\u793a\u3055\u308c\u305f\u5c0e\u4f53\u3092\u901a\u3063\u3066\u96fb\u6e90\u3078\u623b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u91cd\u8981\u306a\u306e\u306f\u3001 <strong>\u96fb\u6e90\u3078\u623b\u308b<\/strong>\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u96fb\u6d41\u306f\u30b0\u30e9\u30a6\u30f3\u30c9\u8a18\u53f7\u306b\u5230\u9054\u3057\u3066\u3082\u6d88\u3048\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u56de\u8def\u56f3\u3067\u306f\u3001\u3053\u306e\u8a18\u53f7\u306b\u3088\u3063\u3066\u8907\u6570\u306e\u914d\u7dda\u3092\u307e\u3068\u3081\u3066\u8868\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u5b9f\u969b\u306e\u5c0e\u4f53\u3001\u30d7\u30ec\u30fc\u30f3\u3001\u30b1\u30fc\u30d6\u30eb\u3001\u96fb\u6e90\u3078\u306e\u63a5\u7d9a\u304c\u3001\u5b8c\u5168\u306a\u30eb\u30fc\u30d7\u3092\u69cb\u6210\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30ce\u30a4\u30ba\u3068EMI\u306e\u6291\u5236\u306b\u5f79\u7acb\u3064<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306e\u5c0e\u4f53\u306b\u306f\u62b5\u6297\u3068\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u30b0\u30e9\u30a6\u30f3\u30c9\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u96fb\u6d41\u304c\u6d41\u308c\u308b\u3068\u3001\u96fb\u4f4d\u5dee\u304c\u751f\u3058\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V = I Z<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6025\u901f\u306b\u5909\u5316\u3059\u308b\u96fb\u6d41\u3067\u306f\u3001\u5bc4\u751f\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u306b\u3088\u3063\u3066\u904e\u6e21\u6210\u5206\u304c\u52a0\u308f\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u4e00\u822c\u306b\u6b21\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V = L\\frac{di}{dt}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u305f\u3081\u3001PCB\u4e0a\u306e\u3042\u308b\u5834\u6240\u306e\u300c\u30b0\u30e9\u30a6\u30f3\u30c9\u300d\u306f\u3001\u5225\u306e\u5834\u6240\u306e\u300c\u30b0\u30e9\u30a6\u30f3\u30c9\u300d\u3068\u77ac\u9593\u7684\u306b\u307e\u3063\u305f\u304f\u540c\u3058\u96fb\u4f4d\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u4f4e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u69cb\u9020\u3068\u77ed\u304f\u307e\u3068\u307e\u3063\u305f\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u306f\u3001\u5171\u901a\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u7d50\u5408\u3001\u30b0\u30e9\u30a6\u30f3\u30c9\u30d0\u30a6\u30f3\u30b9\u3001\u653e\u5c04\u30a8\u30df\u30c3\u30b7\u30e7\u30f3\u3001\u5e72\u6e09\u3078\u306e\u611f\u53d7\u6027\u3092\u4f4e\u6e1b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u96fb\u6c17\u7684\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3067\u304d\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4fdd\u8b77\u63a5\u5730\u306f\u3001\u6545\u969c\u96fb\u6d41\u304c\u6d41\u308c\u308b\u3088\u3046\u610f\u56f3\u7684\u306b\u4f4e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u7d4c\u8def\u3092\u8a2d\u3051\u3001\u30d2\u30e5\u30fc\u30ba\u3001\u30b5\u30fc\u30ad\u30c3\u30c8\u30d6\u30ec\u30fc\u30ab\u30fc\u306a\u3069\u306e\u4fdd\u8b77\u88c5\u7f6e\u304c\u52d5\u4f5c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u3053\u306e\u5b89\u5168\u6a5f\u80fd\u306f\u3001\u901a\u5e38\u306e\u4fe1\u53f7\u30ea\u30bf\u30fc\u30f3\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u4fdd\u8b77\u63a5\u5730\u306e\u8a2d\u8a08\u306f\u3001\u88fd\u54c1\u306e\u69cb\u6210\u3068\u9069\u7528\u3055\u308c\u308b\u96fb\u6c17\u5b89\u5168\u898f\u683c\u306b\u5f93\u3046\u3082\u306e\u3067\u3042\u308a\u3001\u4e00\u822c\u7684\u306aPCB\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u898f\u5247\u3092\u3082\u3068\u306b\u72ec\u81ea\u306b\u6c7a\u3081\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5358\u7d14\u306a\u56de\u8def\u3067\u306fGND\u306f\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30de\u30a4\u30af\u30ed\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u306b5 V\u96fb\u6e90\u3092\u4f9b\u7d66\u3059\u308b\u5834\u5408\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u96fb\u6e90\u306f\u30015 V\u51fa\u529b\u7aef\u5b50\u3068\u30ea\u30bf\u30fc\u30f3\u7aef\u5b50\u306e\u9593\u306b\u96fb\u4f4d\u5dee\u3092\u751f\u307f\u51fa\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30ea\u30bf\u30fc\u30f3\u7aef\u5b50\u3092GND\u3068\u3057\u3066\u5b9a\u3081\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u96fb\u6d41\u306f\u96fb\u6e90\u304b\u3089\u30de\u30a4\u30af\u30ed\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u3068\u305d\u306e\u5468\u8fba\u90e8\u54c1\u3092\u901a\u308a\u3001GND\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u7d4c\u7531\u3057\u3066\u96fb\u6e90\u306b\u623b\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u4fe1\u53f7\u96fb\u5727\u306f\u3001\u540c\u3058GND\u57fa\u6e96\u306b\u5bfe\u3059\u308b\u96fb\u5727\u3068\u3057\u3066\u89e3\u91c8\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/gnd-circuit-current-loop-return-path-1024x576.webp\" alt=\"Diagram showing DC current loop and high-frequency return path through a PCB ground plane\" class=\"wp-image-23572\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/gnd-circuit-current-loop-return-path-1024x576.webp 1024w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/gnd-circuit-current-loop-return-path-300x169.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/gnd-circuit-current-loop-return-path-768x432.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/gnd-circuit-current-loop-return-path-1536x864.webp 1536w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/gnd-circuit-current-loop-return-path-18x10.webp 18w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/gnd-circuit-current-loop-return-path.webp 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u96fb\u6d41\u306f\u9589\u3058\u305f\u30eb\u30fc\u30d7\u3092\u6d41\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u9ad8\u5468\u6ce2\u306e\u30ea\u30bf\u30fc\u30f3\u96fb\u6d41\u306f\u3001\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u4e0a\u3067\u4fe1\u53f7\u30c8\u30ec\u30fc\u30b9\u306e\u771f\u4e0b\u3092\u901a\u308b\u3001\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u304c\u6700\u5c0f\u3068\u306a\u308b\u7d4c\u8def\u3092\u6d41\u308c\u307e\u3059\u3002<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30bb\u30f3\u30b5\u30fc\u51fa\u529b\u304c\u30bb\u30f3\u30b5\u30fc\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u3088\u308a2 V\u9ad8\u304f\u3001\u30de\u30a4\u30af\u30ed\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u304c\u305d\u308c\u30680.5 V\u7570\u306a\u308b\u5834\u5408\u3001\u305d\u306e\u305a\u308c\u306e\u65b9\u5411\u306b\u3088\u3063\u3066\u3001\u53d7\u4fe1\u5074\u306b\u306f1.5 V\u307e\u305f\u306f2.5 V\u3068\u3057\u3066\u898b\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5dee\u306f\u6e2c\u5b9a\u8aa4\u5dee\u3084\u3001\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u30ed\u30b8\u30c3\u30af\u306e\u8aa4\u52d5\u4f5c\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u9069\u5207\u306a\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u3067\u306f\u3001\u63a5\u7d9a\u3060\u3051\u3067\u306a\u304f\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3082\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ad8\u5468\u6ce2\u3067\u306f\u3001\u30ea\u30bf\u30fc\u30f3\u96fb\u6d41\u304c\u62bd\u8c61\u7684\u306a\u300c\u6700\u77ed\u300d\u7d4c\u8def\u3092\u5358\u7d14\u306b\u901a\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306b\u5fdc\u3058\u3066\u5229\u7528\u53ef\u80fd\u306a\u7d4c\u8def\u306b\u5206\u6d41\u3057\u3001\u30eb\u30fc\u30d7\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u304c\u4f4e\u304f\u306a\u308b\u3088\u3046\u3001\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u4e0a\u306e\u4fe1\u53f7\u30c8\u30ec\u30fc\u30b9\u8fd1\u304f\u306b\u96c6\u4e2d\u3059\u308b\u50be\u5411\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u30d7\u30ec\u30fc\u30f3\u306b\u5207\u308c\u76ee\u3084\u30b9\u30ed\u30c3\u30c8\u304c\u3042\u308b\u3068\u3001\u30ea\u30bf\u30fc\u30f3\u96fb\u6d41\u306f\u8fc2\u56de\u3092\u5f37\u3044\u3089\u308c\u3001\u30eb\u30fc\u30d7\u9762\u7a4d\u3001\u30ce\u30a4\u30ba\u3001\u653e\u5c04\u304c\u5897\u52a0\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b0\u30e9\u30a6\u30f3\u30c9\u306e\u4e3b\u306a\u7a2e\u985e<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b0\u30e9\u30a6\u30f3\u30c9\u3068\u3044\u3046\u8a00\u8449\u306f\u3001\u5f79\u5272\u306e\u7570\u306a\u308b\u8907\u6570\u306e\u30ce\u30fc\u30c9\u3084\u5c0e\u4f53\u3092\u6307\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u540d\u79f0\u304c\u5f79\u7acb\u3064\u306e\u306f\u3001\u76f8\u4e92\u306e\u95a2\u4fc2\u304c\u660e\u78ba\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u9650\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/standard-schematic-symbols-earth-chassis-signal-gnd-1024x576.webp\" alt=\"Standard electronics schematic symbols for Earth Ground, Chassis Ground, and Signal or Circuit Ground\" class=\"wp-image-23574\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/standard-schematic-symbols-earth-chassis-signal-gnd-1024x576.webp 1024w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/standard-schematic-symbols-earth-chassis-signal-gnd-300x169.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/standard-schematic-symbols-earth-chassis-signal-gnd-768x432.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/standard-schematic-symbols-earth-chassis-signal-gnd-1536x864.webp 1536w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/standard-schematic-symbols-earth-chassis-signal-gnd-18x10.webp 18w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/standard-schematic-symbols-earth-chassis-signal-gnd.webp 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u56de\u8def\u56f3\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u30b0\u30e9\u30a6\u30f3\u30c9\u8a18\u53f7\uff1a\u30a2\u30fc\u30b9\uff0f\u4fdd\u8b77\u63a5\u5730\uff08\u6c34\u5e73\u7dda3\u672c\uff09\u3001\u30b7\u30e3\u30fc\u30b7\u30b0\u30e9\u30a6\u30f3\u30c9\uff08\u659c\u7dda\uff09\u3001\u4fe1\u53f7\uff0f\u30c7\u30b8\u30bf\u30eb\u30b0\u30e9\u30a6\u30f3\u30c9\uff08\u4e09\u89d2\u5f62\u307e\u305f\u306f\u77e2\u5370\u5f62\uff09\u3002<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u30b0\u30e9\u30a6\u30f3\u30c9\u306e\u7a2e\u985e<\/th><th>\u4e3b\u306a\u76ee\u7684<\/th><th>\u4e00\u822c\u7684\u306a\u7528\u9014<\/th><th>\u91cd\u8981\u306a\u6ce8\u610f\u70b9<\/th><\/tr><tr><td>\u56de\u8def\u30b0\u30e9\u30a6\u30f3\u30c9\uff0f0 V<\/td><td>\u96fb\u5727\u57fa\u6e96\u304a\u3088\u3073\u96fb\u6d41\u30ea\u30bf\u30fc\u30f3<\/td><td>\u307b\u3068\u3093\u3069\u306e\u96fb\u5b50\u56de\u8def<\/td><td>\u5927\u5730\u306b\u5bfe\u3057\u3066\u6d6e\u3044\u305f\u96fb\u4f4d\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308b<\/td><\/tr><tr><td>\u4fe1\u53f7\u30b0\u30e9\u30a6\u30f3\u30c9<\/td><td>\u4fe1\u53f7\u306e\u57fa\u6e96\u304a\u3088\u3073\u30ea\u30bf\u30fc\u30f3<\/td><td>\u30bb\u30f3\u30b5\u30fc\u3001\u30a2\u30f3\u30d7\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/td><td>\u30ce\u30a4\u30ba\u96fb\u6d41\u306b\u3088\u3063\u3066\u5fae\u5c0f\u4fe1\u53f7\u304c\u4e71\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308b<\/td><\/tr><tr><td>\u96fb\u6e90\u30b0\u30e9\u30a6\u30f3\u30c9<\/td><td>\u5927\u304d\u306a\u8ca0\u8377\u96fb\u6d41\u306e\u30ea\u30bf\u30fc\u30f3<\/td><td>\u30e2\u30fc\u30bf\u30fc\u3001\u30b3\u30f3\u30d0\u30fc\u30bf\u30fc\u3001\u96fb\u529b\u6bb5<\/td><td>\u5927\u96fb\u6d41\u306b\u3088\u3063\u3066\u96fb\u5727\u964d\u4e0b\u3084\u30b0\u30e9\u30a6\u30f3\u30c9\u30d0\u30a6\u30f3\u30b9\u304c\u751f\u3058\u308b\u3053\u3068\u304c\u3042\u308b<\/td><\/tr><tr><td>\u30a2\u30ca\u30ed\u30b0\u30b0\u30e9\u30a6\u30f3\u30c9\uff08AGND\uff09<\/td><td>\u9ad8\u611f\u5ea6\u30a2\u30ca\u30ed\u30b0\u56de\u8def\u306e\u57fa\u6e96<\/td><td>ADC\u3001DAC\u3001\u30a2\u30f3\u30d7<\/td><td>\u3053\u306e\u540d\u79f0\u3060\u3051\u3067\u3001\u5c02\u7528\u30d7\u30ec\u30fc\u30f3\u304c\u5fc5\u8981\u306b\u306a\u308b\u308f\u3051\u3067\u306f\u306a\u3044<\/td><\/tr><tr><td>\u30c7\u30b8\u30bf\u30eb\u30b0\u30e9\u30a6\u30f3\u30c9\uff08DGND\uff09<\/td><td>\u30c7\u30b8\u30bf\u30eb\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u96fb\u6d41\u306e\u30ea\u30bf\u30fc\u30f3<\/td><td>MCU\u3001FPGA\u3001\u30ed\u30b8\u30c3\u30af\u56de\u8def<\/td><td>\u7acb\u3061\u4e0a\u304c\u308a\u306e\u901f\u3044\u30a8\u30c3\u30b8\u306f\u5e83\u5e2f\u57df\u30ce\u30a4\u30ba\u3092\u767a\u751f\u3055\u305b\u308b\u3053\u3068\u304c\u3042\u308b<\/td><\/tr><tr><td>\u7b50\u4f53\u30b0\u30e9\u30a6\u30f3\u30c9<\/td><td>\u5c0e\u96fb\u6027\u7b50\u4f53\u3078\u306e\u63a5\u7d9a<\/td><td>\u7523\u696d\u7528\u6a5f\u5668\u3001\u30b7\u30fc\u30eb\u30c9\u4ed8\u304d\u88fd\u54c1<\/td><td>\u5b9a\u3081\u3089\u308c\u305f\u7b87\u6240\u3067\u3001\u5927\u5730\u3001\u56de\u8def\u30b0\u30e9\u30a6\u30f3\u30c9\u3001\u307e\u305f\u306f\u305d\u306e\u4e21\u65b9\u306b\u63a5\u7d9a\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308b<\/td><\/tr><tr><td>\u4fdd\u8b77\u63a5\u5730\uff08PE\uff09<\/td><td>\u611f\u96fb\u304a\u3088\u3073\u6545\u969c\u6642\u306e\u4fdd\u8b77<\/td><td>\u5546\u7528\u96fb\u6e90\u99c6\u52d5\u6a5f\u5668<\/td><td>\u901a\u5e38\u3001\u901a\u5e38\u52d5\u4f5c\u6642\u306e\u8ca0\u8377\u96fb\u6d41\u306e\u623b\u308a\u7d4c\u8def\u3068\u3057\u3066\u306f\u4f7f\u7528\u3057\u306a\u3044<\/td><\/tr><tr><td>\u4eee\u60f3\u30b0\u30e9\u30a6\u30f3\u30c9<\/td><td>\u80fd\u52d5\u7684\u307e\u305f\u306f\u53d7\u52d5\u7684\u306b\u751f\u6210\u3055\u308c\u308b\u57fa\u6e96\u96fb\u5727<\/td><td>\u5358\u96fb\u6e90\u30a2\u30ca\u30ed\u30b0\u56de\u8def<\/td><td>\u96fb\u6d41\u5bb9\u91cf\u3068\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306f\u6709\u9650<\/td><\/tr><tr><td>\u30d5\u30ed\u30fc\u30c6\u30a3\u30f3\u30b0\u30b0\u30e9\u30a6\u30f3\u30c9<\/td><td>\u610f\u56f3\u7684\u306a\u5927\u5730\u63a5\u7d9a\u3092\u6301\u305f\u306a\u3044\u30ed\u30fc\u30ab\u30eb\u57fa\u6e96<\/td><td>\u30d0\u30c3\u30c6\u30ea\u30fc\u99c6\u52d5\u304a\u3088\u3073\u7d76\u7e01\u30b7\u30b9\u30c6\u30e0<\/td><td>\u5bb9\u91cf\u7d50\u5408\u3084\u6e2c\u5b9a\u5668\u3092\u4ecb\u3057\u3066\u5927\u5730\u3068\u7d50\u5408\u3059\u308b\u5834\u5408\u304c\u3042\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">National Instruments\u306f\u3001\u7570\u306a\u308b\u30b0\u30e9\u30a6\u30f3\u30c9\u8a18\u53f7\u304c\u5fc5\u305a\u3057\u3082\u540c\u7b49\u3067\u306f\u306a\u304f\u3001\u30b0\u30e9\u30a6\u30f3\u30c9\u9593\u306b\u6e2c\u5b9a\u53ef\u80fd\u306a\u96fb\u5727\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u304c\u3042\u308b\u3068\u6307\u6458\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u8a2d\u8a08\u8005\u306f\u3001\u3059\u3079\u3066\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u6a5f\u80fd\u3092\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u306a\u3044 <code>GND<\/code> \u30cd\u30c3\u30c8\u306b\u914d\u7f6e\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u9069\u5207\u306a\u8a18\u53f7\u3068\u30cd\u30c3\u30c8\u540d\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">GND\u3068\u5927\u5730\u3001\u7b50\u4f53\u3001\u30cb\u30e5\u30fc\u30c8\u30e9\u30eb\u306e\u9055\u3044<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u7528\u8a9e\u306b\u306f\u95a2\u9023\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u540c\u7fa9\u8a9e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\u3068\u5927\u5730\u63a5\u5730\u306e\u9055\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u56de\u8defGND\u306f\u3001\u56de\u8def\u5185\u3067\u9078\u5b9a\u3055\u308c\u308b\u96fb\u6c17\u7684\u57fa\u6e96\u3067\u3059\u3002\u5927\u5730\u63a5\u5730\u306f\u3001\u7269\u7406\u7684\u306a\u5927\u5730\u307e\u305f\u306f\u8a2d\u5099\u306e\u4fdd\u8b77\u63a5\u5730\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u610f\u56f3\u7684\u306a\u63a5\u7d9a\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56de\u8defGND\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u63a5\u7d9a\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4fdd\u8b77\u63a5\u5730\u306b\u76f4\u63a5\u63a5\u7d9a\u3055\u308c\u308b<\/li>\n\n\n\n<li>\u30b3\u30f3\u30c7\u30f3\u30b5\u307e\u305f\u306f\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u56de\u8def\u7db2\u3092\u4ecb\u3057\u3066\u7b50\u4f53\u3084\u5927\u5730\u306b\u7d50\u5408\u3055\u308c\u308b<\/li>\n\n\n\n<li>\u5236\u5fa1\u3055\u308c\u305f\u5358\u4e00\u306e\u7b87\u6240\u3067\u63a5\u7d9a\u3055\u308c\u308b\u3001\u307e\u305f\u306f<\/li>\n\n\n\n<li>\u901a\u5e38\u306e\u52d5\u4f5c\u6761\u4ef6\u4e0b\u3067\u5b8c\u5168\u306b\u7d76\u7e01\u3055\u308c\u308b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u9069\u5207\u306a\u69cb\u6210\u306f\u3001\u611f\u96fb\u4fdd\u8b77\u3001\u7d76\u7e01\u5b9a\u683c\u3001ESD\u3001\u30b5\u30fc\u30b8\u3001EMI\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3001\u304a\u3088\u3073\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u63a5\u5730\u65b9\u5f0f\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\u3068\u7b50\u4f53\u30b0\u30e9\u30a6\u30f3\u30c9\u306e\u9055\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b50\u4f53\u30b0\u30e9\u30a6\u30f3\u30c9\u306f\u3001\u5c0e\u96fb\u6027\u306e\u7b50\u4f53\u3001\u30d5\u30ec\u30fc\u30e0\u3001\u30b7\u30fc\u30eb\u30c9\u3001\u307e\u305f\u306f\u53d6\u308a\u4ed8\u3051\u69cb\u9020\u306b\u63a5\u7d9a\u3055\u308c\u307e\u3059\u3002ESD\u3084\u9ad8\u5468\u6ce2\u5e72\u6e09\u306e\u7d4c\u8def\u3068\u306a\u308b\u307b\u304b\u3001\u4fdd\u8b77\u63a5\u5730\u306b\u3082\u63a5\u7d9a\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56de\u8def\u30b0\u30e9\u30a6\u30f3\u30c9\u3068\u7b50\u4f53\u30b0\u30e9\u30a6\u30f3\u30c9\u306f\u3001\u76f4\u63a5\u63a5\u7d9a\u3055\u308c\u308b\u5834\u5408\u3082\u3001\u90e8\u54c1\u3067\u69cb\u6210\u3055\u308c\u305f\u56de\u8def\u7db2\u3092\u4ecb\u3057\u3066\u63a5\u7d9a\u3055\u308c\u308b\u5834\u5408\u3082\u3001\u4e92\u3044\u306b\u7d76\u7e01\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u30b3\u30cd\u30af\u30bf\u306e\u30b7\u30fc\u30eb\u30c9\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u4fe1\u53f7\u30b0\u30e9\u30a6\u30f3\u30c9\u56de\u8def\u7db2\u3092\u901a\u308b\u9577\u3044\u914d\u7dda\u3067\u306f\u306a\u304f\u3001\u77ed\u304f\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u306e\u4f4e\u3044\u7d4c\u8def\u3067\u7b50\u4f53\u306b\u63a5\u7d9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u63a5\u7d9a\u306f\u3001\u88fd\u54c1\u306eEMC\u304a\u3088\u3073\u5b89\u5168\u8a2d\u8a08\u306e\u4e00\u90e8\u3068\u3057\u3066\u8a08\u753b\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\u3068\u30cb\u30e5\u30fc\u30c8\u30e9\u30eb\u306e\u9055\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30cb\u30e5\u30fc\u30c8\u30e9\u30eb\u306f\u4ea4\u6d41\u914d\u96fb\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u63a5\u5730\u3055\u308c\u305f\u5c0e\u4f53\u3067\u3001\u901a\u5e38\u306f\u8ca0\u8377\u96fb\u6d41\u304c\u6d41\u308c\u307e\u3059\u3002\u4fdd\u8b77\u63a5\u5730\u306f\u5b89\u5168\u306e\u305f\u3081\u306e\u5c0e\u4f53\u3067\u3001\u901a\u5e38\u306f\u6f0f\u308c\u96fb\u6d41\u307e\u305f\u306f\u6545\u969c\u96fb\u6d41\u306e\u307f\u304c\u6d41\u308c\u307e\u3059\u3002\u3069\u3061\u3089\u3082\u56de\u8defGND\u306e\u4ee3\u7528\u3068\u3057\u3066\u5b89\u6613\u306b\u6271\u3063\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u96fb\u6c17\u8a2d\u5099\u3067\u306f\u3001\u5b9a\u3081\u3089\u308c\u305f\u7b87\u6240\u3067\u30cb\u30e5\u30fc\u30c8\u30e9\u30eb\u3068\u4fdd\u8b77\u63a5\u5730\u3092\u63a5\u7d9a\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u6240\u3067\u63a5\u7d9a\u3059\u308b\u3068\u3001\u5371\u967a\u306a\u63a5\u89e6\u96fb\u6d41\u3084\u4e26\u5217\u96fb\u6d41\u7d4c\u8def\u304c\u751f\u3058\u305f\u308a\u3001\u898f\u5236\u9055\u53cd\u3068\u306a\u3063\u305f\u308a\u3059\u308b\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002\u5546\u7528\u96fb\u6e90\u306e\u914d\u7dda\u8a2d\u8a08\u304a\u3088\u3073\u4fdd\u5b88\u306f\u3001\u9069\u7528\u3055\u308c\u308b\u898f\u683c\u306b\u5f93\u3044\u3001\u8cc7\u683c\u3092\u6301\u3064\u62c5\u5f53\u8005\u306e\u307f\u304c\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">GND\u306f\u6b63\u6975\u304b\u8ca0\u6975\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GND\u306f\u672c\u8cea\u7684\u306b\u6b63\u6975\u3067\u3082\u8ca0\u6975\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u3002\u57fa\u6e96\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u5358\u96fb\u6e90\u30c7\u30b8\u30bf\u30eb\u56de\u8def\u3067\u306f\u3001\u96fb\u6e90\u306e\u8ca0\u6975\u7aef\u5b50\u3092GND\u3068\u3057\u3066\u9078\u3076\u305f\u3081\u3001\u3082\u3046\u4e00\u65b9\u306e\u96fb\u6e90\u30ec\u30fc\u30eb\u306f\u305d\u308c\u306b\u5bfe\u3057\u3066\u6b63\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u306f\u8a2d\u8a08\u4e0a\u306e\u9078\u629e\u3067\u3042\u308a\u3001\u666e\u904d\u7684\u306a\u898f\u5247\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307b\u304b\u306e\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e21\u96fb\u6e90\u3067\u306f\u3001\u4e2d\u70b9\u3092GND\u3068\u3057\u3066\u3001+12 V\u3068\u221212 V\u306e\u96fb\u6e90\u30ec\u30fc\u30eb\u3092\u8a2d\u3051\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u65e7\u5f0f\u306e\u30b7\u30b9\u30c6\u30e0\u3084\u7279\u6b8a\u306a\u30b7\u30b9\u30c6\u30e0\u306e\u4e2d\u306b\u306f\u3001\u6b63\u6975\u63a5\u5730\u65b9\u5f0f\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u4eee\u60f3\u30b0\u30e9\u30a6\u30f3\u30c9\u306f\u3001\u96fb\u6e90\u96fb\u5727\u306e\u4e2d\u9593\u306b\u8a2d\u5b9a\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u30015 V\u30a2\u30ca\u30ed\u30b0\u56de\u8def\u3067\u306f2.5 V\u3067\u3059\u3002<\/li>\n\n\n\n<li>\u7d76\u7e01\u3055\u308c\u305f\u4e8c\u6b21\u5074\u56de\u8def\u306eGND\u306f\u3001\u4e00\u6b21\u5074\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u3084\u5927\u5730\u306b\u5bfe\u3057\u3066\u30d5\u30ed\u30fc\u30c6\u30a3\u30f3\u30b0\u72b6\u614b\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">GND\u3068\u8a18\u3055\u308c\u305f\u7aef\u5b50\u304c\u96fb\u6e90\u306e\u8ca0\u6975\u3001\u7b50\u4f53\u3001\u307e\u305f\u306f\u5927\u5730\u3068\u540c\u4e00\u3060\u3068\u6c7a\u3081\u3064\u3051\u308b\u524d\u306b\u3001\u5fc5\u305a\u56de\u8def\u56f3\u3068\u96fb\u6e90\u69cb\u6210\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PCB\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u3068\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u3068\u306f\u3001\u30b0\u30e9\u30a6\u30f3\u30c9\u30cd\u30c3\u30c8\u306b\u63a5\u7d9a\u3055\u308c\u305f\u6bd4\u8f03\u7684\u5927\u304d\u306a\u9285\u7b94\u9818\u57df\u3067\u3059\u3002PCB\u306e\u5185\u5c64\u306e\u5927\u90e8\u5206\u3092\u5360\u3081\u308b\u5834\u5408\u3082\u3042\u308c\u3070\u3001\u5916\u5c64\u306e\u9285\u7b94\u30d9\u30bf\u3068\u3057\u3066\u914d\u7f6e\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9069\u5207\u306b\u8a2d\u8a08\u3055\u308c\u305f\u30d7\u30ec\u30fc\u30f3\u306f\u3001\u7d30\u9577\u3044\u30b0\u30e9\u30a6\u30f3\u30c9\u914d\u7dda\u3068\u6bd4\u3079\u3066\u62b5\u6297\u3068\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u304c\u4f4e\u304f\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u9ad8\u5468\u6ce2\u4fe1\u53f7\u96fb\u6d41\u3084\u30c7\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u96fb\u6d41\u306e\u305f\u3081\u306e\u3001\u77ed\u304f\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u623b\u308a\u7d4c\u8def\u3082\u63d0\u4f9b\u3057\u307e\u3059\u3002Texas Instruments\u3068Analog Devices\u306f\u3044\u305a\u308c\u3082\u3001\u623b\u308a\u96fb\u6d41\u3001EMI\u5236\u5fa1\u3001\u9ad8\u901f\u4f1d\u9001\u69cb\u9020\u306b\u304a\u3044\u3066\u3001\u4f4e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u304c\u91cd\u8981\u3067\u3042\u308b\u3053\u3068\u3092\u5f37\u8abf\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9023\u7d9a\u3057\u305f\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u306e\u5229\u70b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u623b\u308a\u7d4c\u8def\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u4f4e\u6e1b<\/li>\n\n\n\n<li>\u4fe1\u53f7\u96fb\u6d41\u30eb\u30fc\u30d7\u9762\u7a4d\u306e\u7e2e\u5c0f<\/li>\n\n\n\n<li>\u4fe1\u53f7\u54c1\u8cea\u306e\u5411\u4e0a<\/li>\n\n\n\n<li>\u5171\u901a\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u7d50\u5408\u306e\u4f4e\u6e1b<\/li>\n\n\n\n<li>\u653e\u5c04\u30a8\u30df\u30c3\u30b7\u30e7\u30f3\u3068\u59a8\u5bb3\u611f\u53d7\u6027\u306e\u4f4e\u6e1b<\/li>\n\n\n\n<li>\u5236\u5fa1\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u4e88\u6e2c\u53ef\u80fd\u6027\u5411\u4e0a<\/li>\n\n\n\n<li>\u4e00\u90e8\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3067\u306e\u653e\u71b1\u6027\u5411\u4e0a<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e83\u3044\u9285\u7b94\u9818\u57df\u304c\u3042\u308b\u3060\u3051\u3067\u3001\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u304c\u81ea\u52d5\u7684\u306b\u52b9\u679c\u3092\u767a\u63ee\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u7d30\u3044\u304f\u3073\u308c\u3001\u30d7\u30ec\u30fc\u30f3\u306e\u5206\u5272\u3001\u5b64\u7acb\u3057\u305f\u9285\u7b94\u30a2\u30a4\u30e9\u30f3\u30c9\u3001\u758e\u3089\u306a\u63a5\u7d9a\u30d3\u30a2\u3001\u4e0d\u9069\u5207\u306a\u4f4d\u7f6e\u306e\u30a2\u30f3\u30c1\u30d1\u30c3\u30c9\u306f\u3001\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u3092\u906e\u65ad\u3057\u305f\u308a\u72ed\u3081\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PCB\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u95a2\u3059\u308b\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3042\u3089\u3086\u308b\u57fa\u677f\u306b\u9069\u3057\u305f\u5358\u4e00\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u30ec\u30a4\u30a2\u30a6\u30c8\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4f4e\u5468\u6ce2\u30bb\u30f3\u30b5\u30fc\u3001RF\u30e2\u30b8\u30e5\u30fc\u30eb\u3001\u30e2\u30fc\u30bf\u30fc\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u3001\u5546\u7528\u96fb\u6e90\u3067\u52d5\u4f5c\u3059\u308b\u88fd\u54c1\u3067\u306f\u3001\u305d\u308c\u305e\u308c\u8981\u4ef6\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u539f\u5247\u306f\u3001\u6709\u7528\u306a\u51fa\u767a\u70b9\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u30cd\u30c3\u30c8\u540d\u3067\u306f\u306a\u304f\u3001\u96fb\u6d41\u7d4c\u8def\u304b\u3089\u8003\u3048\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5404\u96fb\u6d41\u304c\u3069\u3053\u304b\u3089\u767a\u751f\u3057\u3001\u3069\u306e\u3088\u3046\u306b\u96fb\u6e90\u3078\u623b\u308b\u304b\u3092\u7279\u5b9a\u3057\u307e\u3059\u3002\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u30fc\u3001\u30af\u30ed\u30c3\u30af\u7dda\u3001\u30b2\u30fc\u30c8\u30c9\u30e9\u30a4\u30d0\u30fc\u3001\u30e2\u30fc\u30bf\u30fc\u3001\u30ea\u30ec\u30fc\u3001\u5927\u96fb\u6d41LED\u3001ADC\u5165\u529b\u3001\u901a\u4fe1\u30b3\u30cd\u30af\u30bf\u30fc\u306b\u306f\u7279\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ce\u30a4\u30ba\u306e\u591a\u3044\u96fb\u6d41\u3084\u5927\u96fb\u6d41\u306e\u30eb\u30fc\u30d7\u304c\u5c0f\u3055\u304f\u4fdd\u305f\u308c\u3001\u654f\u611f\u306a\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u3092\u5171\u6709\u3057\u306a\u3044\u3088\u3046\u306b\u3001\u56de\u8def\u3092\u914d\u7f6e\u3057\u3066\u914d\u7dda\u3057\u307e\u3059\u30022\u3064\u306e\u30cd\u30c3\u30c8\u304c\u3069\u3061\u3089\u3082GND\u3068\u547c\u3070\u308c\u3066\u3044\u3066\u3082\u3001\u5171\u901a\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u4ecb\u3057\u3066\u4e92\u3044\u306b\u5e72\u6e09\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u5b9f\u7528\u4e0a\u53ef\u80fd\u306a\u5834\u5408\u306f\u9023\u7d9a\u3057\u305f\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u3092\u4f7f\u7528\u3059\u308b<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/pcb-trace-crossing-ground-plane-split-emi-1024x576.webp\" alt=\"Comparison of PCB signal return path on continuous ground plane versus high EMI radiation caused by crossing a split ground plane\" class=\"wp-image-23575\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/pcb-trace-crossing-ground-plane-split-emi-1024x576.webp 1024w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/pcb-trace-crossing-ground-plane-split-emi-300x169.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/pcb-trace-crossing-ground-plane-split-emi-768x432.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/pcb-trace-crossing-ground-plane-split-emi-1536x864.webp 1536w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/pcb-trace-crossing-ground-plane-split-emi-18x10.webp 18w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/pcb-trace-crossing-ground-plane-split-emi.webp 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u30d7\u30ec\u30fc\u30f3\u5206\u5272\u304c\u5371\u967a\u306a\u7406\u7531\uff1a\u9ad8\u901f\u30c8\u30ec\u30fc\u30b9\u304c\u5206\u5272\u90e8\u3084\u30ae\u30e3\u30c3\u30d7\u3092\u307e\u305f\u3050\u3068\u3001\u30ea\u30bf\u30fc\u30f3\u96fb\u6d41\u306f\u5927\u304d\u306a\u30eb\u30fc\u30d7\u3092\u901a\u308b\u3053\u3068\u306b\u306a\u308a\u3001\u30eb\u30fc\u30d7\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u3068EMI\u304c\u5927\u5e45\u306b\u5897\u52a0\u3057\u307e\u3059\u3002<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u307b\u3068\u3093\u3069\u306e\u591a\u5c64\u30c7\u30b8\u30bf\u30eb\u57fa\u677f\u304a\u3088\u3073\u30df\u30c3\u30af\u30b9\u30c9\u30b7\u30b0\u30ca\u30eb\u57fa\u677f\u3067\u306f\u3001\u4fe1\u53f7\u5c64\u306b\u96a3\u63a5\u3059\u308b\u30d9\u30bf\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u304c\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u57fa\u6e96\u3068\u77ed\u3044\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u9ad8\u901f\u30c8\u30ec\u30fc\u30b9\u306f\u3001\u914d\u7dda\u5168\u4f53\u306b\u308f\u305f\u3063\u3066\u540c\u3058\u9014\u5207\u308c\u306e\u306a\u3044\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u4e0a\u306b\u914d\u7f6e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u306e\u5206\u5272\u90e8\u3001\u30b9\u30ed\u30c3\u30c8\u3001\u307e\u305f\u306f\u7a7a\u9699\u3092\u9ad8\u901f\u30c8\u30ec\u30fc\u30b9\u304c\u6a2a\u5207\u3089\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u30ea\u30bf\u30fc\u30f3\u96fb\u6d41\u304c\u4e0d\u9023\u7d9a\u90e8\u3092\u8fc2\u56de\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u5834\u5408\u3001\u30eb\u30fc\u30d7\u304c\u5927\u304d\u304f\u306a\u308a\u3001\u30af\u30ed\u30b9\u30c8\u30fc\u30af\u3084EMI\u304c\u5897\u52a0\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002TI\u306f\u3001\u5206\u5272\u90e8\u3092\u307e\u305f\u3050\u4fe1\u53f7\u306b\u3088\u3063\u3066\u30ea\u30bf\u30fc\u30f3\u96fb\u6d41\u304c\u5927\u304d\u306a\u30eb\u30fc\u30d7\u3092\u5f62\u6210\u3059\u308b\u3068\u3001\u7279\u306b\u6ce8\u610f\u3092\u4fc3\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u6a5f\u80fd\u3054\u3068\u306b\u90e8\u54c1\u3092\u914d\u7f6e\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u6570\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u30cd\u30c3\u30c8\u540d\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3088\u308a\u3082\u3001\u7269\u7406\u7684\u306a\u914d\u7f6e\u306e\u307b\u3046\u304c\u91cd\u8981\u306a\u5834\u5408\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u30a2\u30ca\u30ed\u30b0\u3001\u30c7\u30b8\u30bf\u30eb\u3001\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u96fb\u6e90\u3001\u5927\u96fb\u6d41\u306e\u5404\u30bb\u30af\u30b7\u30e7\u30f3\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3001\u305d\u308c\u305e\u308c\u306e\u5c40\u6240\u7684\u306a\u96fb\u6d41\u304c\u7ba1\u7406\u3055\u308c\u305f\u9818\u57df\u5185\u3092\u6d41\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u654f\u611f\u306a\u30a2\u30ca\u30ed\u30b0\u5165\u529b\u306f\u3001\u30af\u30ed\u30c3\u30af\u3001\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30ce\u30fc\u30c9\u3001\u9ad8\u901f\u30c7\u30b8\u30bf\u30eb\u30d0\u30b9\u304b\u3089\u96e2\u3057\u3066\u914d\u7f6e\u3057\u307e\u3059\u3002\u4e21\u65b9\u306e\u9818\u57df\u304c1\u3064\u306e\u30d7\u30ec\u30fc\u30f3\u3092\u5171\u6709\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u7406\u7531\u3060\u3051\u3067\u3001\u30a2\u30ca\u30ed\u30b0\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u30c7\u30b8\u30bf\u30eb\u4fe1\u53f7\u3092\u901a\u3055\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. AGND\u3068DGND\u306f\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306b\u5f93\u3063\u3066\u6271\u3046<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/mixed-signal-pcb-layout-agnd-dgnd-partitioning-1024x683.webp\" alt=\"PCB layout diagram demonstrating component partitioning for analog AGND and digital DGND on a single continuous ground plane\" class=\"wp-image-23576\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/mixed-signal-pcb-layout-agnd-dgnd-partitioning-1024x683.webp 1024w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/mixed-signal-pcb-layout-agnd-dgnd-partitioning-300x200.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/mixed-signal-pcb-layout-agnd-dgnd-partitioning-768x512.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/mixed-signal-pcb-layout-agnd-dgnd-partitioning-18x12.webp 18w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/07\/mixed-signal-pcb-layout-agnd-dgnd-partitioning.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u52b9\u679c\u7684\u306a\u9818\u57df\u5206\u3051\uff1a\u30ce\u30a4\u30ba\u306e\u591a\u3044\u30c7\u30b8\u30bf\u30eb\u30ea\u30bf\u30fc\u30f3\u96fb\u6d41\u304c\u654f\u611f\u306a\u30a2\u30ca\u30ed\u30b0\u56de\u8def\u3092\u6a2a\u5207\u3089\u306a\u3044\u3088\u3046\u3001\u9023\u7d9a\u3057\u305f\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u3092\u5171\u6709\u3057\u306a\u304c\u3089\u3001\u30a2\u30ca\u30ed\u30b0\u90e8\u54c1\u3068\u30c7\u30b8\u30bf\u30eb\u90e8\u54c1\u3092\u7269\u7406\u7684\u306b\u5206\u96e2\u3057\u307e\u3059\u3002<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">AGND\u30d4\u30f3\u3068DGND\u30d4\u30f3\u306f\u3001\u30df\u30c3\u30af\u30b9\u30c9\u30b7\u30b0\u30ca\u30ebIC\u5185\u90e8\u306e\u5225\u3005\u306e\u6a5f\u80fd\u3092\u793a\u3059\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u304c\u3001PCB\u8a2d\u8a08\u8005\u306b2\u3064\u306e\u7d76\u7e01\u3055\u308c\u305f\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u3092\u4f5c\u308b\u3088\u3046\u81ea\u52d5\u7684\u306b\u6307\u793a\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u591a\u304f\u306e\u30b3\u30f3\u30d0\u30fc\u30bf\u30fc\u3067\u306f\u3001\u4e21\u65b9\u306e\u30d4\u30f3\u3092\u30c7\u30d0\u30a4\u30b9\u8fd1\u304f\u306e\u540c\u3058\u4f4e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u57fa\u6e96\u306b\u63a5\u7d9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u3092\u691c\u8a0e\u305b\u305a\u306b\u30b0\u30e9\u30a6\u30f3\u30c9\u3092\u5206\u5272\u3059\u308b\u3068\u3001\u6027\u80fd\u304c\u60aa\u5316\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002IC\u30e1\u30fc\u30ab\u30fc\u306e\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u30ec\u30a4\u30a2\u30a6\u30c8\u306b\u5f93\u3044\u3001\u5185\u90e8\u306e\u30c7\u30b8\u30bf\u30eb\u96fb\u6d41\u3092\u8a55\u4fa1\u3057\u3001\u7528\u9014\u304c\u654f\u611f\u306a\u5834\u5408\u306f\u6e2c\u5b9a\u306b\u3088\u3063\u3066\u8a2d\u8a08\u3092\u691c\u8a3c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. \u30c7\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u30eb\u30fc\u30d7\u3092\u77ed\u304f\u4fdd\u3064<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5404\u9ad8\u5468\u6ce2\u30c7\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u3092\u3001\u95a2\u9023\u3059\u308b\u96fb\u6e90\u30d4\u30f3\u3068\u30b0\u30e9\u30a6\u30f3\u30c9\u30d4\u30f3\u306e\u8fd1\u304f\u306b\u914d\u7f6e\u3057\u307e\u3059\u3002\u63a5\u7d9a\u306f\u77ed\u304f\u5e45\u5e83\u304f\u3057\u3001\u96fb\u6e90\u30d3\u30a2\u3068\u30b0\u30e9\u30a6\u30f3\u30c9\u30d3\u30a2\u3092\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u30d1\u30c3\u30c9\u306e\u8fd1\u304f\u306b\u914d\u7f6e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IC\u3001\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u3001\u96fb\u6e90\u63a5\u7d9a\u3001\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u306e\u9593\u306e\u30eb\u30fc\u30d7\u3092\u5c0f\u3055\u304f\u3057\u3001\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u3092\u4f4e\u304f\u6291\u3048\u308b\u3053\u3068\u304c\u76ee\u6a19\u3067\u3059\u3002Analog Devices\u306f\u3001\u63a5\u7d9a\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u306b\u3088\u3063\u3066\u30c7\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u52b9\u679c\u304c\u4f4e\u4e0b\u3059\u308b\u305f\u3081\u3001\u77ed\u3044\u30c8\u30ec\u30fc\u30b9\u307e\u305f\u306f\u30d3\u30a2\u3092\u4f7f\u3063\u3066\u4f4e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u30d7\u30ec\u30fc\u30f3\u306b\u76f4\u63a5\u63a5\u7d9a\u3059\u308b\u3053\u3068\u3092\u63a8\u5968\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. \u5c64\u9593\u9077\u79fb\u90e8\u3067\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u306e\u9023\u7d9a\u6027\u3092\u78ba\u4fdd\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ad8\u901f\u4fe1\u53f7\u304c\u5c64\u3092\u5207\u308a\u66ff\u3048\u308b\u3068\u304d\u3001\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u3082\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u9593\u3092\u79fb\u52d5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u4e21\u65b9\u306e\u57fa\u6e96\u5c64\u304c\u30b0\u30e9\u30a6\u30f3\u30c9\u3067\u3042\u308c\u3070\u3001\u4fe1\u53f7\u30d3\u30a2\u306e\u8fd1\u304f\u306b\u30b0\u30e9\u30a6\u30f3\u30c9\u63a5\u7d9a\u30d3\u30a2\u3092\u914d\u7f6e\u3057\u307e\u3059\u3002\u4fe1\u53f7\u304c\u7570\u306a\u308b\u57fa\u6e96\u306e\u30d7\u30ec\u30fc\u30f3\u9593\u3092\u79fb\u52d5\u3059\u308b\u5834\u5408\u306f\u3001\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u3068\u5468\u6ce2\u6570\u6210\u5206\u306b\u57fa\u3065\u3044\u3066\u9069\u5207\u306a\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u3092\u78ba\u4fdd\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">EMC\u8a2d\u8a08\u4e0a\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u57fa\u677f\u306e\u7aef\u3001\u30b7\u30fc\u30eb\u30c9\u5883\u754c\u3001\u307e\u305f\u306f\u30ce\u30a4\u30ba\u306e\u591a\u3044\u9818\u57df\u306e\u5468\u56f2\u3067\u30b0\u30e9\u30a6\u30f3\u30c9\u9285\u7b94\u3092\u30d3\u30a2\u3067\u63a5\u7d9a\u3057\u307e\u3059\u3002\u6d6e\u904a\u9285\u7b94\u30a2\u30a4\u30e9\u30f3\u30c9\u306f\u907f\u3051\u3001\u9069\u5207\u306b\u63a5\u7d9a\u3059\u308b\u304b\u524a\u9664\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. \u96fb\u5727\u964d\u4e0b\u3068\u767a\u71b1\u3092\u8003\u616e\u3057\u3066\u5927\u96fb\u6d41\u30ea\u30bf\u30fc\u30f3\u3092\u8a2d\u8a08\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e2\u30fc\u30bf\u30fc\u3001\u30d2\u30fc\u30bf\u30fc\u3001LED\u3001\u30d0\u30c3\u30c6\u30ea\u30fc\u3001\u96fb\u529b\u5909\u63db\u5668\u306e\u30ea\u30bf\u30fc\u30f3\u306b\u306f\u3001\u5e45\u5e83\u306e\u9285\u7b94\u9818\u57df\u3001\u539a\u9285\u7b94\u3001\u8907\u6570\u306e\u30d3\u30a2\u3001\u307e\u305f\u306f\u5c02\u7528\u30d7\u30ec\u30fc\u30f3\u304c\u5fc5\u8981\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30b0\u30e9\u30a6\u30f3\u30c9\u306e\u30d9\u30bf\u5857\u308a\u306a\u3089\u4f55\u3067\u3082\u5341\u5206\u3060\u3068\u8003\u3048\u305a\u3001\u4e88\u60f3\u3055\u308c\u308b\u96fb\u5727\u964d\u4e0b\u3068\u6e29\u5ea6\u4e0a\u6607\u3092\u8a08\u7b97\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u96fb\u6d41\u3092\u9ad8\u7cbe\u5ea6\u30bb\u30f3\u30b5\u30fc\u3084\u57fa\u6e96\u96fb\u5727\u306e\u7d4c\u8def\u306b\u6d41\u3055\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u30df\u30ea\u30dc\u30eb\u30c8\u30ec\u30d9\u30eb\u306e\u7cbe\u5ea6\u304c\u91cd\u8981\u306a\u5834\u5408\u306f\u3001\u30b1\u30eb\u30d3\u30f3\u63a5\u7d9a\u3084\u72ec\u7acb\u3057\u305f\u30bb\u30f3\u30b9\u30ea\u30bf\u30fc\u30f3\u304c\u5fc5\u8981\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8. \u30b7\u30e3\u30fc\u30b7\u3068\u4fdd\u8b77\u63a5\u5730\u306e\u63a5\u7d9a\u3092\u614e\u91cd\u306b\u8a08\u753b\u3059\u308b<\/h3>\n\n\n\n<p 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class=\"wp-block-heading\">\u3059\u3079\u3066\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u8a18\u53f7\u304c\u540c\u3058\u7269\u7406\u30ce\u30fc\u30c9\u3092\u8868\u3059\u3068\u601d\u3044\u8fbc\u3080<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u56de\u8def\u56f3\u306e\u8a18\u53f7\u306f\u898b\u305f\u76ee\u3092\u7c21\u6f54\u306b\u3067\u304d\u307e\u3059\u304c\u3001\u91cd\u8981\u306a\u9055\u3044\u3092\u96a0\u3059\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u30a2\u30ca\u30ed\u30b0\u30b0\u30e9\u30a6\u30f3\u30c9\u3001\u30c7\u30b8\u30bf\u30eb\u30b0\u30e9\u30a6\u30f3\u30c9\u3001\u30b7\u30e3\u30fc\u30b7\u3001\u7d76\u7e01\u30b0\u30e9\u30a6\u30f3\u30c9\u3001\u4fdd\u8b77\u63a5\u5730\u306e\u30cd\u30c3\u30c8\u540d\u3068\u63a5\u7d9a\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u3092\u8a08\u753b\u305b\u305a\u306b\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u3092\u5206\u5272\u3059\u308b<\/h3>\n\n\n\n<p 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class=\"wp-block-paragraph\">\u30e2\u30fc\u30bf\u30fc\u3084\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u30fc\u304cADC\u3084\u30bb\u30f3\u30b5\u30fc\u3068\u7d30\u3044\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u3092\u5171\u6709\u3059\u308b\u3068\u3001\u305d\u3053\u3067\u751f\u3058\u308b\u96fb\u5727\u964d\u4e0b\u304c\u6e2c\u5b9a\u4fe1\u53f7\u306e\u4e00\u90e8\u306b\u306a\u308a\u307e\u3059\u3002\u90e8\u54c1\u914d\u7f6e\u3068\u9285\u7b94\u306e\u5f62\u72b6\u306b\u3088\u3063\u3066\u96fb\u6d41\u306e\u6d41\u308c\u3092\u5236\u5fa1\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u95a2\u4fc2\u306e\u306a\u3044\u30b0\u30e9\u30a6\u30f3\u30c9\u30ea\u30bf\u30fc\u30f3\u3092\u6570\u73e0\u3064\u306a\u304e\u306b\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u6570\u306e\u8ca0\u8377\u30921\u672c\u306e\u7d30\u3044\u30b0\u30e9\u30a6\u30f3\u30c9\u30c8\u30ec\u30fc\u30b9\u306b\u6cbf\u3063\u3066\u76f4\u5217\u306b\u3064\u306a\u3050\u3068\u3001\u3042\u308b\u8ca0\u8377\u306e\u96fb\u6d41\u304c\u5225\u306e\u8ca0\u8377\u306e\u57fa\u6e96\u96fb\u4f4d\u3092\u5909\u52d5\u3055\u305b\u307e\u3059\u3002\u5468\u6ce2\u6570\u3084\u96fb\u6d41\u306b\u5fdc\u3058\u3066\u3001\u30d7\u30ec\u30fc\u30f3\u3001\u30b9\u30bf\u30fc\u63a5\u7d9a\u3001\u307e\u305f\u306f\u614e\u91cd\u306b\u5206\u5272\u3057\u305f\u30ea\u30bf\u30fc\u30f3\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u307b\u3046\u304c\u9069\u5207\u306a\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b0\u30e9\u30a6\u30f3\u30c9\u9285\u7b94\u3092\u7406\u60f3\u7684\u306a\u3082\u306e\u3068\u3057\u3066\u6271\u3046<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d7\u30ec\u30fc\u30f3\u3001\u30c8\u30ec\u30fc\u30b9\u3001\u30d3\u30a2\u3001\u30b3\u30cd\u30af\u30bf\u30fc\u3001\u30b1\u30fc\u30d6\u30eb\u306b\u306f\u3059\u3079\u3066\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u30a8\u30c3\u30b8\u30ec\u30fc\u30c8\u304c\u9ad8\u3044\u5834\u5408\u306f\u3001\u6570nH\u3067\u3082\u5f71\u97ff\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u76f4\u6d41\u5c0e\u901a\u3060\u3051\u3067\u306a\u304f\u3001\u30d7\u30ec\u30fc\u30f3\u306e\u7d30\u3044\u304f\u3073\u308c\u3001\u30d3\u30a2\u7fa4\u3001\u30b3\u30cd\u30af\u30bf\u30fc\u30d4\u30f3\u306e\u5272\u308a\u5f53\u3066\u3001\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u306e\u9077\u79fb\u3082\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u5b9a\u5668\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u7121\u8996\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u304f\u306e\u30d9\u30f3\u30c1\u30aa\u30b7\u30ed\u30b9\u30b3\u30fc\u30d7\u3067\u306f\u3001\u30b0\u30e9\u30a6\u30f3\u30c9\u30af\u30ea\u30c3\u30d7\u304c\u4fdd\u8b77\u63a5\u5730\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3092\u901a\u96fb\u4e2d\u3067\u4fdd\u8b77\u63a5\u5730\u306b\u57fa\u6e96\u304c\u306a\u3044\u30ce\u30fc\u30c9\u306b\u63a5\u7d9a\u3059\u308b\u3068\u3001\u305d\u306e\u30ce\u30fc\u30c9\u304c\u63a5\u5730\u306b\u77ed\u7d61\u3055\u308c\u3001\u6a5f\u5668\u3092\u640d\u50b7\u3057\u305f\u308a\u611f\u96fb\u306e\u5371\u967a\u3092\u751f\u3058\u3055\u305b\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u9069\u5207\u306a\u5b9a\u683c\u306e\u5dee\u52d5\u30d7\u30ed\u30fc\u30d6\u307e\u305f\u306f\u7d76\u7e01\u6e2c\u5b9a\u65b9\u6cd5\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PCB\u4e0a\u306eGND\u306e\u7279\u5b9a\u3068\u30c6\u30b9\u30c8\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c8\u30ec\u30fc\u30b9\u306e\u8272\u3001\u30b3\u30cd\u30af\u30bf\u30fc\u306e\u4f4d\u7f6e\u3001\u307e\u305f\u306f\u30b0\u30e9\u30a6\u30f3\u30c9\u306e\u3088\u3046\u306b\u898b\u3048\u308b\u8a18\u53f7\u3060\u3051\u306b\u983c\u3089\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u56de\u8def\u56f3\u3001PCB\u30c7\u30fc\u30bf\u3001\u90e8\u54c1\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u3001\u304a\u3088\u3073\u5b89\u5168\u306a\u6e2c\u5b9a\u65b9\u6cd5\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u96fb\u6e90\u30aa\u30d5\u6642<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u56de\u8def\u56f3\u3067\u6b21\u306e <code>GND<\/code>, <code>0V<\/code>, <code>AGND<\/code>, <code>DGND<\/code>, <code>PGND<\/code>, <code>\u30b7\u30e3\u30fc\u30b7<\/code>, <code>PE<\/code> 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class=\"wp-block-heading\">\u96fb\u6e90\u3092\u5165\u308c\u305f\u72b6\u614b\u3067<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u6e2c\u5b9a\u5bfe\u8c61\u306e\u56de\u8def\u9818\u57df\u306b\u9069\u3057\u305f\u57fa\u6e96\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u6e2c\u5b9a\u5668\u306e\u5165\u529b\u304a\u3088\u3073\u30b0\u30e9\u30a6\u30f3\u30c9\u63a5\u7d9a\u304c\u3001\u60f3\u5b9a\u3055\u308c\u308b\u30b3\u30e2\u30f3\u30e2\u30fc\u30c9\u96fb\u5727\u306b\u5bfe\u3057\u3066\u5b89\u5168\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u5b9f\u969b\u306e\u8ca0\u8377\u6761\u4ef6\u3067\u3001\u30b0\u30e9\u30a6\u30f3\u30c9\u70b9\u9593\u306e\u76f4\u6d41\u96fb\u5727\u964d\u4e0b\u3092\u6e2c\u5b9a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u77ed\u3044\u30b0\u30e9\u30a6\u30f3\u30c9\u30b9\u30d7\u30ea\u30f3\u30b0\u3001\u5dee\u52d5\u30d7\u30ed\u30fc\u30d6\u3001\u307e\u305f\u306f\u9069\u5207\u306a\u30d7\u30ed\u30fc\u30d3\u30f3\u30b0\u65b9\u6cd5\u3092\u4f7f\u7528\u3057\u3066\u30aa\u30b7\u30ed\u30b9\u30b3\u30fc\u30d7\u3067\u9ad8\u5468\u6ce2\u30b0\u30e9\u30a6\u30f3\u30c9\u30ce\u30a4\u30ba\u3092\u8abf\u3079\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u3001\u901a\u4fe1\u3001\u30e2\u30fc\u30bf\u30fc\u306e\u8d77\u52d5\u306a\u3069\u3001\u6700\u3082\u53b3\u3057\u3044\u52d5\u4f5c\u6761\u4ef6\u3067\u30c6\u30b9\u30c8\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c0e\u901a\u3060\u3051\u3067\u306f\u3001\u91cd\u8981\u306a\u5468\u6ce2\u6570\u306b\u304a\u3044\u3066\u30b0\u30e9\u30a6\u30f3\u30c9\u30b7\u30b9\u30c6\u30e0\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u5341\u5206\u306b\u4f4e\u3044\u3053\u3068\u3092\u8a3c\u660e\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PCB\u88fd\u9020\u524d\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ac\u30fc\u30d0\u30fc\u30d5\u30a1\u30a4\u30eb\u3068\u30c9\u30ea\u30eb\u30d5\u30a1\u30a4\u30eb\u3092\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u524d\u306b\u3001\u6b21\u306e\u9805\u76ee\u3092\u7c21\u5358\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3059\u3079\u3066\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u9818\u57df\u306b\u540d\u524d\u304c\u4ed8\u3051\u3089\u308c\u3001\u610f\u56f3\u3069\u304a\u308a\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/li>\n\n\n\n<li>\u9ad8\u901f\u4fe1\u53f7\u3084\u9ad8\u611f\u5ea6\u4fe1\u53f7\u306e\u4e0b\u306b\u3001\u9023\u7d9a\u3057\u305f\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/li>\n\n\n\n<li>\u30d7\u30ec\u30fc\u30f3\u306e\u5206\u5272\u90e8\u3001\u30b9\u30ed\u30c3\u30c8\u3001\u307e\u305f\u306f\u5927\u304d\u306a\u7a7a\u9699\u3092\u6a2a\u5207\u308b\u914d\u7dda\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f<\/li>\n\n\n\n<li>\u5927\u96fb\u6d41\u304a\u3088\u3073\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u96fb\u6d41\u306e\u30ea\u30bf\u30fc\u30f3\u30eb\u30fc\u30d7\u306f\u30b3\u30f3\u30d1\u30af\u30c8\u3067\u3059\u304b\uff1f<\/li>\n\n\n\n<li>\u9ad8\u611f\u5ea6\u30a2\u30ca\u30ed\u30b0\u56de\u8def\u306e\u30ea\u30bf\u30fc\u30f3\u96fb\u6d41\u7d4c\u8def\u306f\u3001\u30ce\u30a4\u30ba\u306e\u591a\u3044\u96fb\u6d41\u7d4c\u8def\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/li>\n\n\n\n<li>AGND\u3068DGND\u306e\u63a5\u7d9a\u306f\u3001\u90e8\u54c1\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306b\u5f93\u3063\u3066\u3044\u307e\u3059\u304b\uff1f<\/li>\n\n\n\n<li>\u30c7\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u30b3\u30f3\u30c7\u30f3\u30b5\u306f\u3001\u9069\u5207\u306a\u30d4\u30f3\u306e\u8fd1\u304f\u306b\u77ed\u3044\u30d3\u30a2\u63a5\u7d9a\u3067\u914d\u7f6e\u3055\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/li>\n\n\n\n<li>\u5fc5\u8981\u306a\u7b87\u6240\u306b\u3001\u5c64\u9593\u9077\u79fb\u7528\u306e\u30ea\u30bf\u30fc\u30f3\u96fb\u6d41\u7d4c\u8def\u304c\u8a2d\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/li>\n\n\n\n<li>\u30b3\u30cd\u30af\u30bf\u3001\u30b7\u30fc\u30eb\u30c9\u3001\u9285\u7b94\u30d9\u30bf\u9818\u57df\u306e\u5883\u754c\u306b\u3001\u5341\u5206\u306a\u6570\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u30d3\u30a2\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/li>\n\n\n\n<li>\u30b0\u30e9\u30a6\u30f3\u30c9\u914d\u7dda\u3001\u30d7\u30ec\u30fc\u30f3\u3001\u30d3\u30a2\u306f\u3001\u96fb\u6d41\u3068\u6e29\u5ea6\u4e0a\u6607\u306b\u5fdc\u3058\u305f\u30b5\u30a4\u30ba\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u304b\uff1f<\/li>\n\n\n\n<li>\u30b7\u30e3\u30fc\u30b7\u3001\u30b7\u30fc\u30eb\u30c9\u3001\u4fdd\u8b77\u63a5\u5730\u306e\u63a5\u7d9a\u65b9\u6cd5\u304c\u660e\u78ba\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/li>\n\n\n\n<li>\u7d76\u7e01\u8ddd\u96e2\u3068\u5b89\u5168\u8981\u4ef6\u306f\u78ba\u8a8d\u6e08\u307f\u3067\u3059\u304b\uff1f<\/li>\n\n\n\n<li>\u91cd\u8981\u306a\u30b0\u30e9\u30a6\u30f3\u30c9\u9818\u57df\u3068\u96fb\u6e90\u30ec\u30fc\u30eb\u306b\u30c6\u30b9\u30c8\u30dd\u30a4\u30f3\u30c8\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u88fd\u9020\u306b\u3042\u305f\u3063\u3066\u306f\u3001\u6700\u7d42\u7684\u306a\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u3001\u9285\u7b94\u539a\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u5236\u5fa1\u8981\u4ef6\u3001\u60f3\u5b9a\u96fb\u6d41\u3001\u304a\u3088\u3073\u5b89\u5168\u3084\u7d76\u7e01\u306b\u95a2\u3059\u308b\u6ce8\u610f\u4e8b\u9805\u3092\u63d0\u793a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u88fd\u9020\u30c7\u30fc\u30bf\u306b\u3088\u3063\u3066\u8a2d\u8a08\u3069\u304a\u308a\u306e\u9285\u7b94\u30d1\u30bf\u30fc\u30f3\u3092\u4f5c\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u78ba\u8a8d\u306a\u3057\u306b\u3001\u672a\u5b9a\u7fa9\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u69cb\u6210\u3092\u4fee\u6b63\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">GND\u306b\u95a2\u3059\u308b\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">GND\u306e\u6b63\u5f0f\u540d\u79f0\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">GND\u306fGround\uff08\u30b0\u30e9\u30a6\u30f3\u30c9\uff09\u306e\u7565\u3067\u3059\u3002\u96fb\u5b50\u56de\u8def\u3067\u306f\u901a\u5e38\u3001\u56de\u8def\u306e\u57fa\u6e96\u30ce\u30fc\u30c9\u3068\u5171\u901a\u306e\u96fb\u6d41\u5e30\u8def\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\u306f0 V\u3068\u540c\u3058\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u56de\u8def\u89e3\u6790\u3084\u6e2c\u5b9a\u3067\u306f\u3001\u901a\u5e38GND\u3092\u516c\u79f00 V\u3068\u3057\u3066\u6271\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u5b9f\u969b\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u5c0e\u4f53\u306b\u306f\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u3042\u308b\u305f\u3081\u3001\u8ca0\u8377\u304c\u304b\u304b\u3063\u3066\u3044\u308b\u3068\u304d\u3084\u9ad8\u901f\u904e\u6e21\u73fe\u8c61\u304c\u767a\u751f\u3057\u305f\u3068\u304d\u306b\u306f\u3001GND\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u7570\u306a\u308b\u70b9\u306e\u9593\u306b\u308f\u305a\u304b\u306a\u96fb\u5727\u5dee\u304c\u751f\u3058\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\u306f\u30de\u30a4\u30ca\u30b9\u7aef\u5b50\u3068\u540c\u3058\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u3058\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u5fc5\u305a\u3057\u3082\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5358\u96fb\u6e90\u56de\u8def\u306e\u591a\u304f\u3067\u306f\u3001\u96fb\u6e90\u306e\u30de\u30a4\u30ca\u30b9\u5074\u3092GND\u3068\u3057\u3066\u6307\u5b9a\u3057\u307e\u3059\u3002\u4e21\u96fb\u6e90\u56de\u8def\u3067\u306f\u4e2d\u70b9\u3092GND\u3068\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u3001\u30d7\u30e9\u30b9\u30b0\u30e9\u30a6\u30f3\u30c9\u65b9\u5f0f\u3067\u306fGND\u3092\u30d7\u30e9\u30b9\u7aef\u5b50\u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\u306b\u306f\u96fb\u6d41\u304c\u6d41\u308c\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u306f\u3044\u3002\u56de\u8def\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u306b\u306f\u3001\u901a\u5e38\u3001\u5e30\u9084\u96fb\u6d41\u304c\u6d41\u308c\u307e\u3059\u3002\u4e00\u65b9\u3001\u4fdd\u8b77\u63a5\u5730\u306f\u5225\u306e\u3082\u306e\u3067\u3001\u901a\u5e38\u306e\u72b6\u614b\u3067\u306f\u901a\u5e38\u306e\u8ca0\u8377\u96fb\u6d41\u304c\u6d41\u308c\u308b\u3079\u304d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001\u308f\u305a\u304b\u306a\u6f0f\u308c\u96fb\u6d41\u304c\u5b58\u5728\u3059\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a2\u30fc\u30b9\u63a5\u5730\u306a\u3057\u3067\u3082\u56de\u8def\u306f\u52d5\u4f5c\u3057\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u306f\u3044\u3002\u96fb\u6c60\u99c6\u52d5\u56de\u8def\u3084\u7d76\u7e01\u56de\u8def\u306f\u3001\u57fa\u6e96\u96fb\u4f4d\u304c\u5916\u90e8\u306b\u56fa\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u30ed\u30fc\u30ab\u30ebGND\u3067\u52d5\u4f5c\u3059\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u3067\u3082\u3001\u9589\u3058\u305f\u96fb\u6d41\u30eb\u30fc\u30d7\u3068\u660e\u78ba\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u5185\u90e8\u96fb\u5727\u57fa\u6e96\u306f\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">IC\u306b\u8907\u6570\u306eGND\u30d4\u30f3\u304c\u3042\u308b\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u6570\u306e\u30d4\u30f3\u3092\u8a2d\u3051\u308b\u3053\u3068\u3067\u3001\u63a5\u7d9a\u62b5\u6297\u3084\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u3092\u4f4e\u6e1b\u3057\u305f\u308a\u3001\u96fb\u6d41\u306b\u5bfe\u5fdc\u3057\u305f\u308a\u3001\u71b1\u7279\u6027\u3092\u6539\u5584\u3057\u305f\u308a\u3001\u5185\u90e8\u306e\u9ad8\u611f\u5ea6\u306a\u6a5f\u80fd\u3092\u5206\u96e2\u3057\u305f\u308a\u3067\u304d\u307e\u3059\u3002\u5fc5\u8981\u306a\u30b0\u30e9\u30a6\u30f3\u30c9\u30d4\u30f3\u306f\u3059\u3079\u3066\u3001\u30e1\u30fc\u30ab\u30fc\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u3068\u63a8\u5968\u30ec\u30a4\u30a2\u30a6\u30c8\u306b\u5f93\u3063\u3066\u63a5\u7d9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a2\u30ca\u30ed\u30b0\u30b0\u30e9\u30a6\u30f3\u30c9\u3068\u30c7\u30b8\u30bf\u30eb\u30b0\u30e9\u30a6\u30f3\u30c9\u306f\u5206\u96e2\u3059\u3079\u304d\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5fc5\u305a\u3057\u3082\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4efb\u610f\u306b\u30d7\u30ec\u30fc\u30f3\u3092\u5206\u5272\u3059\u308b\u3088\u308a\u3001\u90e8\u54c1\u914d\u7f6e\u3092\u5206\u3051\u3001\u96fb\u6d41\u7d4c\u8def\u3092\u9069\u5207\u306b\u5236\u5fa1\u3059\u308b\u3053\u3068\u306e\u307b\u3046\u304c\u901a\u5e38\u306f\u91cd\u8981\u3067\u3059\u3002\u591a\u304f\u306e\u30df\u30c3\u30af\u30b9\u30c9\u30b7\u30b0\u30ca\u30ebIC\u3067\u306f\u3001\u4f4e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u5171\u901a\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u304c\u6700\u9069\u3067\u3059\u304c\u3001\u7528\u9014\u306b\u3088\u3063\u3066\u306f\u7279\u5b9a\u306e\u5206\u5272\u65b9\u6cd5\u3084\u4e00\u70b9\u63a5\u7d9a\u304c\u5fc5\u8981\u3067\u3059\u3002\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306b\u5f93\u3044\u3001\u5e30\u9084\u96fb\u6d41\u3092\u5206\u6790\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Arduino\u306a\u3069\u306e\u958b\u767a\u30dc\u30fc\u30c9\u306b\u3042\u308bGND\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30dc\u30fc\u30c9\u306e\u5171\u901a0 V\u57fa\u6e96\u304a\u3088\u3073\u96fb\u6e90\u306e\u5e30\u8def\u63a5\u7d9a\u3067\u3001\u901a\u5e38\u306f\u30dc\u30fc\u30c9\u306eDC\u96fb\u6e90\u306e\u30de\u30a4\u30ca\u30b9\u5074\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5916\u90e8\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u63a5\u7d9a\u3059\u308b\u5834\u5408\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u610f\u56f3\u7684\u306b\u7d76\u7e01\u3055\u308c\u3066\u3044\u308b\u304b\u5b8c\u5168\u5dee\u52d5\u65b9\u5f0f\u3067\u306a\u3044\u9650\u308a\u3001\u901a\u5e38\u306f\u305d\u308c\u3089\u306e\u30b0\u30e9\u30a6\u30f3\u30c9\u3082\u63a5\u7d9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">VCC\u3068GND\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">VCC\u306f\u96fb\u6e90\u30e9\u30a4\u30f3\u3067\u3042\u308a\u3001GND\u306f\u57fa\u6e96\u30ce\u30fc\u30c9\u517c\u5e30\u8def\u3067\u3059\u30025 V\u56de\u8def\u3067\u306f\u3001GND\u3092\u57fa\u6e96\u306bVCC\u304c5 V\u3068\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u540d\u79f0\u306f\u7570\u306a\u308b\u5f79\u5272\u3092\u8868\u3057\u3066\u304a\u308a\u3001\u96fb\u6d41\u306f\u96fb\u6e90\u5074\u3068\u5e30\u8def\u5074\u306e\u4e21\u65b9\u3092\u901a\u3063\u3066\u6d41\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b0\u30e9\u30a6\u30f3\u30c9\u30eb\u30fc\u30d7\u306f\u4f55\u304c\u539f\u56e0\u3067\u767a\u751f\u3057\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">2\u70b9\u9593\u304c\u8907\u6570\u306e\u5c0e\u96fb\u7d4c\u8def\u3067\u63a5\u7d9a\u3055\u308c\u308b\u3068\u3001\u30b0\u30e9\u30a6\u30f3\u30c9\u30eb\u30fc\u30d7\u304c\u5f62\u6210\u3055\u308c\u3001\u671b\u307e\u3057\u304f\u306a\u3044\u96fb\u6d41\u304c\u5faa\u74b0\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u751f\u3058\u308b\u96fb\u5727\u964d\u4e0b\u306b\u3088\u308a\u3001\u30cf\u30e0\u30ce\u30a4\u30ba\u3001\u6e2c\u5b9a\u8aa4\u5dee\u3001EMI\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5bfe\u7b56\u3068\u3057\u3066\u3001\u63a5\u7d9a\u306e\u9069\u5207\u306a\u7ba1\u7406\u3001\u5dee\u52d5\u4fe1\u53f7\u4f1d\u9001\u3001\u7d76\u7e01\u3001\u30b1\u30fc\u30d6\u30eb\u3084\u30b7\u30fc\u30eb\u30c9\u306e\u63a5\u7d9a\u65b9\u6cd5\u306e\u5909\u66f4\u306a\u3069\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GND\u306f\u3001\u56de\u8def\u56f3\u306e\u4e0b\u90e8\u306b\u63cf\u304b\u308c\u305f\u8a18\u53f7\u306b\u3068\u3069\u307e\u308a\u307e\u305b\u3093\u3002\u56de\u8def\u306e\u96fb\u5727\u306b\u610f\u5473\u3092\u4e0e\u3048\u308b\u57fa\u6e96\u3067\u3042\u308a\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u96fb\u6d41\u3092\u96fb\u6e90\u306b\u623b\u3059\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u3082\u3042\u308a\u307e\u3059\u3002\u5927\u5730\u3001\u30b7\u30e3\u30fc\u30b7\u3001\u96fb\u6e90\u306e\u30de\u30a4\u30ca\u30b9\u7aef\u5b50\u3001\u307e\u305f\u306f\u5225\u306e\u57fa\u6e96\u306b\u63a5\u7d9a\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u8a2d\u8a08\u3092\u78ba\u8a8d\u305b\u305a\u306b\u305d\u3046\u3057\u305f\u95a2\u4fc2\u3092\u524d\u63d0\u306b\u3057\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PCB\u306e\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6027\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001\u7269\u7406\u7684\u306a\u30ea\u30bf\u30fc\u30f3\u7d4c\u8def\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30eb\u30fc\u30d7\u3092\u30b3\u30f3\u30d1\u30af\u30c8\u306b\u4fdd\u3061\u3001\u9023\u7d9a\u3057\u305f\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u3092\u7dad\u6301\u3057\u3001\u90e8\u54c1\u914d\u7f6e\u306b\u3088\u3063\u3066\u30ce\u30a4\u30ba\u306e\u591a\u3044\u96fb\u6d41\u7d4c\u8def\u3068\u9ad8\u611f\u5ea6\u306a\u96fb\u6d41\u7d4c\u8def\u3092\u5206\u96e2\u3057\u3001\u30c7\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u90e8\u54c1\u3092\u4f4e\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u3067\u63a5\u7d9a\u3057\u3001\u30df\u30c3\u30af\u30b9\u30c9\u30b7\u30b0\u30ca\u30eb\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u3064\u3044\u3066\u306f\u30c7\u30d0\u30a4\u30b9\u56fa\u6709\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5f93\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u677f\u3092\u91cf\u7523\u306b\u5411\u3051\u3066\u6e96\u5099\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u88fd\u9020\u6027\u30ec\u30d3\u30e5\u30fc\u3068PCB\u898b\u7a4d\u3082\u308a\u306e\u305f\u3081\u306b\u3001\u30ac\u30fc\u30d0\u30fc\u30d5\u30a1\u30a4\u30eb\u3001\u30c9\u30ea\u30eb\u30c7\u30fc\u30bf\u3001\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u3001\u9285\u7b94\u306e\u8981\u4ef6\u3001\u304a\u3088\u3073\u95a2\u9023\u3059\u308b\u96fb\u6c17\u7684\u306a\u6ce8\u610f\u4e8b\u9805\u3092LEADHUI PCB\u306b\u304a\u9001\u308a\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6280\u8853\u8cc7\u6599<\/h2>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>National Instruments\u3001 <a href=\"https:\/\/www.ni.com\/en\/support\/documentation\/supplemental\/18\/chassis--earth-and-signal-grounding--terminology-and-symbols.html\">\u30b7\u30e3\u30fc\u30b7\u3001\u63a5\u5730\u3001\u4fe1\u53f7\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\uff1a\u7528\u8a9e\u3068\u8a18\u53f7<\/a><\/li>\n\n\n\n<li>Texas Instruments\u3001 <a href=\"https:\/\/www.ti.com\/lit\/pdf\/SLYT499\">\u30df\u30c3\u30af\u30b9\u30c9\u30b7\u30b0\u30ca\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff08\u7b2c1\u90e8\uff09<\/a><\/li>\n\n\n\n<li>Texas Instruments\u3001 <a href=\"https:\/\/www.ti.com\/lit\/pdf\/SLYT512\">\u30df\u30c3\u30af\u30b9\u30c9\u30b7\u30b0\u30ca\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff08\u7b2c2\u90e8\uff09<\/a><\/li>\n\n\n\n<li>Analog Devices\u3001 <a href=\"https:\/\/www.analog.com\/mt-031\">MT-031\uff1a\u30c7\u30fc\u30bf\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u30b0\u30e9\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u3068AGND\u30fbDGND\u306e\u8b0e\u306e\u89e3\u660e<\/a><\/li>\n\n\n\n<li>Analog Devices\u3001 <a href=\"https:\/\/www.analog.com\/MT-101\">MT-101\uff1a\u30c7\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u6280\u6cd5<\/a><\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>GND appears on almost every circuit diagram, PCB, power supply, and electronic module. It is often described as \u201czero volts\u201d or \u201cthe negative terminal,\u201d but neither description is universally correct. In electronics, GND stands for ground. It is the reference node against which other voltages are measured and, in many circuits, part of the path that current follows back to its source. A circuit ground may be connected to the physical earth, but it does not have to be. Understanding that distinction is essential when designing, testing, or troubleshooting a PCB. Key Takeaways What Does GND Mean in Electronics? GND is the standard abbreviation for ground. In a circuit, it [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":23572,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"What Is GND? Meaning, Types, and PCB Grounding Explained","_seopress_titles_desc":"What is GND in electronics? Learn its meaning, how circuit ground works, key ground types, PCB layout rules, and common grounding mistakes.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[{"_seopress_pro_rich_snippets_article_type":"Article","_seopress_pro_rich_snippets_article_title":"","_seopress_pro_rich_snippets_article_desc":"","_seopress_pro_rich_snippets_article_author":"","_seopress_pro_rich_snippets_article_img":"","_seopress_pro_rich_snippets_article_coverage_start_date":"","_seopress_pro_rich_snippets_article_coverage_start_time":"","_seopress_pro_rich_snippets_article_coverage_end_date":"","_seopress_pro_rich_snippets_article_coverage_end_time":"","_seopress_pro_rich_snippets_article_speakable_css_selector":"","_seopress_pro_rich_snippets_type":"faq","_seopress_pro_rich_snippets_faq":[{"question":"What is the full form of GND?","answer":"GND stands for ground. In electronics, it usually identifies the circuit\u2019s reference node and a common current-return network."},{"question":"Is GND the same as 0 V?","answer":"GND is normally assigned a nominal value of 0 V for circuit analysis and measurement. Real ground conductors have impedance, however, so different points on the GND network can develop small voltage differences under load or during fast transients."},{"question":"Is GND the same as the negative terminal?","answer":"Sometimes, but not always. In many single-supply circuits, supply negative is designated as GND. A split supply may use its midpoint as GND, and a positive-ground system may connect GND to the positive terminal."},{"question":"Does current flow through GND?","answer":"Yes, circuit ground commonly carries return current. Protective earth is different: under normal conditions it should not carry ordinary load current, although small leakage current may exist."},{"question":"Can a circuit work without earth ground?","answer":"Yes. Battery-powered and isolated circuits often operate with a floating local GND. They still require a closed current loop and a defined internal voltage reference."},{"question":"Why do ICs have multiple GND pins?","answer":"Multiple pins can reduce connection resistance and inductance, handle current, improve thermal performance, or separate sensitive internal functions. Every required ground pin should be connected according to the manufacturer\u2019s datasheet and recommended layout."},{"question":"Should analog and digital grounds be separated?","answer":"Not automatically. Separate component placement and controlled current paths are usually more important than arbitrary plane splits. Many mixed-signal ICs work best with a common low-impedance ground plane, while some applications require a specific split or single-point connection. Follow the datasheet and analyze the return currents."},{"question":"What is GND on Arduino and other development boards?","answer":"It is the board\u2019s common 0 V reference and power-return connection, usually tied to the negative side of the board\u2019s DC supply. When connecting external modules, their grounds often need to be connected unless the interface is intentionally isolated or fully differential."},{"question":"What is the difference between VCC and GND?","answer":"VCC is a power rail, while GND is the reference and return node. In a 5 V circuit, VCC may be 5 V relative to GND. The names describe different roles; current must travel through both the supply and return portions of the loop."},{"question":"What causes a ground loop?","answer":"A ground loop forms when two points are connected by more than one conductive path, allowing unwanted current to circulate. The resulting voltage drop can introduce hum, measurement error, or EMI. Solutions may involve controlled bonding, differential signaling, isolation, or changes to cable and shield connections."}]}],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[14],"tags":[],"class_list":["post-11922","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronic-circuit"],"acf":[],"meta_box":[],"_links":{"self":[{"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/posts\/11922","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/comments?post=11922"}],"version-history":[{"count":0,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/posts\/11922\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/media\/23572"}],"wp:attachment":[{"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/media?parent=11922"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/categories?post=11922"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/tags?post=11922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}