{"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\/ko\/blog\/what-is-gnd\/","title":{"rendered":"GND\ub780 \ubb34\uc5c7\uc778\uac00\uc694? \uc758\ubbf8, \uc885\ub958 \ubc0f PCB \uc811\uc9c0 \uc124\uba85"},"content":{"rendered":"<p class=\"wp-block-paragraph\">GND\ub294 \uac70\uc758 \ubaa8\ub4e0 \ud68c\ub85c\ub3c4, PCB, \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58 \ubc0f \uc804\uc790 \ubaa8\ub4c8\uc5d0\uc11c \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud754\ud788 \u201c0\ubcfc\ud2b8\u201d \ub610\ub294 \u201c\uc74c\uadf9 \ub2e8\uc790\u201d\ub77c\uace0 \uc124\uba85\ud558\uc9c0\ub9cc, \ub450 \uc124\uba85 \ubaa8\ub450 \ud56d\uc0c1 \ub9de\ub294 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc804\uc790\uacf5\ud559\uc5d0\uc11c <strong>GND\ub294 \uc811\uc9c0\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4<\/strong>. GND\ub294 \ub2e4\ub978 \uc804\uc555\uc744 \uce21\uc815\ud558\ub294 \uae30\uc900 \ub178\ub4dc\uc774\uba70, \ub9ce\uc740 \ud68c\ub85c\uc5d0\uc11c \uc804\ub958\uac00 \uc804\uc6d0\uc73c\ub85c \ub418\ub3cc\uc544\uac00\ub294 \uacbd\ub85c\uc758 \uc77c\ubd80\uc785\ub2c8\ub2e4. \ud68c\ub85c \uc811\uc9c0\ub294 \ubb3c\ub9ac\uc801\uc778 \ub300\uc9c0\uc5d0 \uc5f0\uacb0\ub420 \uc218\ub3c4 \uc788\uc9c0\ub9cc, \ubc18\ub4dc\uc2dc \uc5f0\uacb0\ub418\uc5b4\uc57c \ud558\ub294 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4. \uc774 \ucc28\uc774\ub97c \uc774\ud574\ud558\ub294 \uac83\uc740 PCB\ub97c \uc124\uacc4\ud558\uac70\ub098 \ud14c\uc2a4\ud2b8\ud558\uac70\ub098 \ubb38\uc81c\ub97c \ud574\uacb0\ud560 \ub54c \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/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>\ud575\uc2ec \uc694\uc810<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>GND\ub294 \uc811\uc9c0\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4<\/strong>, \uc77c\ubc18\uc801\uc73c\ub85c \ud68c\ub85c\uc5d0\uc11c 0V \uae30\uc900\uc73c\ub85c \uc9c0\uc815\ub41c \ub178\ub4dc\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc804\uc555\uc740 \ud56d\uc0c1 \ub450 \uc9c0\uc810 \uc0ac\uc774\uc5d0\uc11c \uce21\uc815\ub418\uba70, GND\ub294 \uc774\ub7ec\ud55c \uce21\uc815\uc5d0 \uacf5\ud1b5 \uae30\uc900\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>GND\uc5d0\ub294 \uadc0\ud658 \uc804\ub958\uac00 \ud750\ub974\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc9c0\ub9cc, \uc774 \uc804\ub958\ub294 \uc804\uc6d0\uc73c\ub85c \ub3cc\uc544\uac00\ub294 \uac83\uc774\uc9c0 \uc790\ub3d9\uc73c\ub85c \ub300\uc9c0\ub85c \ud758\ub7ec\ub4dc\ub294 \uac83\uc774 \uc544\ub2d9\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ud68c\ub85c \uc811\uc9c0, \uc2e0\ud638 \uc811\uc9c0, \uc100\uc2dc \uc811\uc9c0 \ubc0f \ubcf4\ud638 \uc811\uc9c0\ub294 \uae30\ub2a5\uc774 \uc11c\ub85c \ub2e4\ub974\ubbc0\ub85c \uc11c\ub85c \ubc14\uafd4 \uc4f8 \uc218 \uc788\ub294 \uac83\uc73c\ub85c \ucde8\uae09\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4.<\/li>\n\n\n\n<li>GND\ub294 \ubcf8\uc9c8\uc801\uc73c\ub85c \uc591\uadf9\uc774\ub098 \uc74c\uadf9\uc774 \uc544\ub2d9\ub2c8\ub2e4. \ub9ce\uc740 \ub2e8\uc77c \uc804\uc6d0 \ud68c\ub85c\uc5d0\uc11c\ub294 \uc804\uc6d0 \uc74c\uadf9 \ub2e8\uc790\uc5d0 \uc5f0\uacb0\ub418\uc9c0\ub9cc, \ub2e4\ub978 \uad6c\uc131\ub3c4 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>PCB\uc5d0\uc11c \uc784\ud53c\ub358\uc2a4\uac00 \ub0ae\uace0 \ub04a\uae40 \uc5c6\ub294 \uc811\uc9c0\uba74\uc740 \uadc0\ud658 \uacbd\ub85c\ub97c \uc720\uc9c0\ud558\uace0 \ub178\uc774\uc988\ub97c \uc81c\uc5b4\ud558\uba70 \uc804\uc790\uae30 \uac04\uc12d\uc744 \uc904\uc774\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc544\ub0a0\ub85c\uadf8 \uc811\uc9c0\uba74\uacfc \ub514\uc9c0\ud138 \uc811\uc9c0\uba74\uc744 \ubb34\uc870\uac74 \ubd84\ud560\ud558\uc9c0 \ub9c8\uc138\uc694. \uc804\ub958 \uacbd\ub85c\ub97c \uc0b4\ud3b4\ubcf4\uace0 \ubd80\ud488 \uc81c\uc870\uc5c5\uccb4\uc758 \ub808\uc774\uc544\uc6c3 \uc9c0\uce68\uc744 \ub530\ub974\uc138\uc694.<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\uc804\uc790\uacf5\ud559\uc5d0\uc11c GND\ub294 \ubb34\uc5c7\uc744 \uc758\ubbf8\ud558\ub098\uc694?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GND\ub294 \ub2e4\uc74c\uc744 \ub73b\ud558\ub294 \ud45c\uc900 \uc57d\uc5b4\uc785\ub2c8\ub2e4. <strong>\uc811\uc9c0<\/strong>. \ud68c\ub85c\uc5d0\uc11c GND\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc804\uc704\uac00 0V\ub85c \uc9c0\uc815\ub41c \ub178\ub4dc\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uadf8\ub7ec\uba74 \ub2e4\ub978 \ubaa8\ub4e0 \ub178\ub4dc\uc758 \uc804\uc555\uc744 \uc774 \uae30\uc900\uc5d0 \ub300\ud55c \uac12\uc73c\ub85c \ud45c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \ud68c\ub85c\ub3c4\uc5d0\uc11c \uc804\uc6d0 \ub808\uc77c\uc744 <code>+5V<\/code>\ub85c \ud45c\uc2dc\ud588\ub2e4\uba74, \uc774\ub294 \ubcf4\ud1b5 \ud574\ub2f9 \ub808\uc77c\uc774 \uc9c0\uc815\ub41c GND \ub178\ub4dc\ubcf4\ub2e4 5V \ub192\ub2e4\ub294 \ub73b\uc785\ub2c8\ub2e4. \uba40\ud2f0\ubbf8\ud130\ub294 +5V \ub808\uc77c\uacfc GND \uc0ac\uc774\uc758 \uc804\uc704\ucc28\ub97c \uce21\uc815\ud574 \uc774 \uac12\uc744 \ud655\uc778\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8\ub807\ub2e4\uace0 GND\uac00 \uc5b4\ub514\uc11c\ub098 \uc808\ub300 \uc804\uc555 0V\ub77c\ub294 \ub73b\uc740 \uc544\ub2d9\ub2c8\ub2e4. \uc804\uc555\uc740 \ud56d\uc0c1 \ub450 \uc9c0\uc810 \uc0ac\uc774\uc758 \ucc28\uc774\uc785\ub2c8\ub2e4. \uc124\uacc4\uc790\ub294 \ud3b8\uc758\uc0c1 \ud55c \ub178\ub4dc\ub97c \ub85c\uceec 0V \uae30\uc900\uc73c\ub85c \uc815\ud569\ub2c8\ub2e4. \uc774\ub294 \ub2e4\ub978 \uae30\uc900\uc810\uc744 \uc815\ud560 \uc218 \uc788\uc74c\uc5d0\ub3c4 \ud574\uc218\uba74\uc744 \uae30\uc900\uc73c\ub85c \uace0\ub3c4\ub97c \ub098\ud0c0\ub0b4\ub294 \uac83\uacfc \ube44\uc2b7\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uac04\ub2e8\ud788 \ub9d0\ud558\uba74<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>GND\ub294 \ud68c\ub85c\uc758 \uc804\uc555 \uc218\uc900\uc744 \uc815\uc758\ud558\ub294 \uacf5\ud1b5 \uae30\uc900 \ub178\ub4dc\uc785\ub2c8\ub2e4. \ub610\ud55c \uc804\ub958\uac00 \uc804\uc6d0\uc73c\ub85c \ub418\ub3cc\uc544\uac00 \ud3d0\ud68c\ub85c\ub97c \uc774\ub8f0 \uc218 \uc788\ub3c4\ub85d \uadc0\ud658 \uacbd\ub85c \uc5ed\ud560\uc744 \ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\ub294 \ud56d\uc0c1 \ub300\uc9c0\uc5d0 \uc5f0\uacb0\ub418\ub098\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc544\ub2c8\uc694. \ubc30\ud130\ub9ac\ub85c \uc791\ub3d9\ud558\ub294 \uc13c\uc11c, \ud734\ub300\uc804\ud654, \ub4dc\ub860 \ub610\ub294 \uc808\uc5f0\ub41c \uc81c\uc5b4 \ubcf4\ub4dc\ub294 \ud1a0\uc591\uc774\ub098 \uac74\ubb3c\uc758 \ubcf4\ud638 \uc811\uc9c0 \uc2dc\uc2a4\ud15c\uc5d0 \ub3c4\uc804\uc131\uc73c\ub85c \uc5f0\uacb0\ub418\uc9c0 \uc54a\uc544\ub3c4 \uc791\ub3d9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud68c\ub85c\uc758 GND\ub294 \ub85c\uceec \ud68c\ub85c \uae30\uc900\uc774\uba70, \ub300\uc9c0\uc640 \uc758\ub3c4\uc801\uc73c\ub85c \uc5f0\uacb0\ub418\uc9c0 \uc54a\uc558\uc744 \ub54c\ub294 \ubd80\uc720 \uc811\uc9c0\ub77c\uace0 \ubd80\ub974\uae30\ub3c4 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub300\uc9c0 \uae30\uc900 \uc7a5\ube44\ub294 \uc774\uc640 \ub2e4\ub985\ub2c8\ub2e4. \uc77c\ubd80 \uc81c\ud488\uc5d0\uc11c\ub294 \uc548\uc804, \uc804\uc790\ud30c \uc801\ud569\uc131 \ub610\ub294 \uce21\uc815\uc0c1\uc758 \uc774\uc720\ub85c \ud68c\ub85c \uc811\uc9c0\ub97c \uc100\uc2dc\ub098 \ubcf4\ud638 \uc811\uc9c0\uc5d0 \uc758\ub3c4\uc801\uc73c\ub85c \uc5f0\uacb0\ud569\ub2c8\ub2e4. \uc5f0\uacb0 \ubc29\uc2dd\uc740 \uc2dc\uc2a4\ud15c, \uc801\uc6a9\ub418\ub294 \uc548\uc804 \uc694\uac74 \ubc0f EMC \uc124\uacc4\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud68c\ub85c\uc5d0 GND\uac00 \ud544\uc694\ud55c \uc774\uc720\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GND\ub294 \uc11c\ub85c \uad00\ub828\ub41c \uc5ec\ub7ec \uac00\uc9c0 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uac01 \uc5ed\ud560\uc758 \uc911\uc694\uc131\uc740 \ud68c\ub85c\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc804\uc555 \uae30\uc900\uc810\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uae30\uc900\uc810\uc774 \ubb34\uc5c7\uc778\uc9c0 \uc54c\uae30 \uc804\uc5d0\ub294 3.3 V\uc640 \uac19\uc740 \ud45c\uae30\ub9cc\uc73c\ub85c\ub294 \uc758\ubbf8\uac00 \uc644\uc804\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ub300\ubd80\ubd84\uc758 \ub514\uc9c0\ud138 \ud68c\ub85c\uc5d0\uc11c 3.3 V\ub294 GND\ub97c \uae30\uc900\uc73c\ub85c 3.3 V\ub77c\ub294 \ub73b\uc785\ub2c8\ub2e4. \ub17c\ub9ac \uc784\uacc4\uac12, \uc544\ub0a0\ub85c\uadf8 \uc785\ub825, \uc13c\uc11c \ucd9c\ub825, \uc804\uc6d0 \ub808\uc77c\uc740 \ubaa8\ub450 \uacf5\ud1b5 \uae30\uc900\uc810\uc5d0 \uc758\uc874\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub450 \uc7a5\uce58\uac00 \uc801\uc808\ud55c \uae30\uc900\uc810\uc744 \uacf5\uc720\ud558\uc9c0 \uc54a\uac70\ub098 \uae30\uc900\uc810 \ucc28\uc774\ub97c \uacac\ub514\ub3c4\ub85d \uc124\uacc4\ub41c \uc808\uc5f0\ud615\/\ucc28\ub3d9 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc73c\uba74, \uc2e0\ud638\uc120\uc774 \uc62c\ubc14\ub974\uac8c \uc5f0\uacb0\ub418\uc5b4 \uc788\uc5b4\ub3c4 \ud1b5\uc2e0\uc5d0 \uc2e4\ud328\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc804\ub958\uac00 \ud750\ub974\ub294 \ud3d0\ud68c\ub85c\ub97c \uc644\uc131\ud569\ub2c8\ub2e4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc804\ub958\ub294 \ud3d0\ud68c\ub85c\ub97c \ub530\ub77c \ud758\ub7ec\uc57c \ud569\ub2c8\ub2e4. \uac04\ub2e8\ud55c DC \ud68c\ub85c\uc5d0\uc11c\ub294 \uad00\uc2b5\uc801 \uc804\ub958\uac00 \uc804\uc6d0\uc758 \uc591\uadf9 \ub2e8\uc790\uc5d0\uc11c \ub098\uc640 \ubd80\ud558\ub97c \ud1b5\uacfc\ud55c \ub4a4, GND\ub85c \ud45c\uc2dc\ub41c \ub3c4\uc120\uc744 \ud1b5\ud574 \uc804\uc6d0\uc73c\ub85c \ub3cc\uc544\uac08 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\uae30\uc11c \uc911\uc694\ud55c \ud45c\ud604\uc740 <strong>\uc804\uc6d0\uc73c\ub85c \ub3cc\uc544\uac04\ub2e4<\/strong>\uc785\ub2c8\ub2e4. \uc804\ub958\ub294 \uc811\uc9c0 \uae30\ud638\uc5d0 \ub3c4\ub2ec\ud588\ub2e4\uace0 \ud574\uc11c \uc0ac\ub77c\uc9c0\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ud68c\ub85c\ub3c4\uc5d0\uc11c\ub294 \uc5ec\ub7ec \uac1c\uc758 \uc120\uc744 \ud558\ub098\uc758 \uae30\ud638\ub85c \ub098\ud0c0\ub0bc \uc218 \uc788\uc9c0\ub9cc, \uc2e4\uc81c \ub3c4\uccb4, \ud3c9\uba74, \ucf00\uc774\ube14, \uc804\uc6d0 \uc5f0\uacb0\ubd80\ub294 \uc5ec\uc804\ud788 \uc644\uc804\ud55c \ud3d0\ud68c\ub85c\ub97c \uc774\ub8f9\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ub178\uc774\uc988\uc640 EMI\ub97c \uc81c\uc5b4\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2e4\uc81c \ub3c4\uccb4\uc5d0\ub294 \uc800\ud56d\uacfc \uc778\ub355\ud134\uc2a4\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uc811\uc9c0 \uc784\ud53c\ub358\uc2a4\ub97c \ud1b5\ud574 \uc804\ub958\uac00 \ud750\ub974\uba74 \uc804\uc555 \ucc28\uc774\uac00 \ubc1c\uc0dd\ud569\ub2c8\ub2e4:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V = I Z<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc804\ub958\uac00 \ube60\ub974\uac8c \ubcc0\ud560 \ub54c\ub294 \uae30\uc0dd \uc778\ub355\ud134\uc2a4\ub85c \uc778\ud574 \uacfc\ub3c4 \uc131\ubd84\uc774 \ub354\ud574\uc9c0\uba70, \uc774\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ub2e4\uc74c\uacfc \uac19\uc774 \ud45c\ud604\ub429\ub2c8\ub2e4:<\/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\">\ub530\ub77c\uc11c PCB\uc758 \ud55c \uc704\uce58\uc5d0 \uc788\ub294 \u201c\uc811\uc9c0\u201d\ub294 \ub2e4\ub978 \uc704\uce58\uc758 \u201c\uc811\uc9c0\u201d\uc640 \uc21c\uac04\uc801\uc73c\ub85c \uc815\ud655\ud788 \uac19\uc740 \uc804\uc704\uac00 \uc544\ub2d0 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc784\ud53c\ub358\uc2a4\uac00 \ub0ae\uc740 \uc811\uc9c0 \uad6c\uc870\uc640 \uc9e7\uc740 \uadc0\ud658 \uacbd\ub85c\ub294 \uacf5\ud1b5 \uc784\ud53c\ub358\uc2a4 \uacb0\ud569, \uc811\uc9c0 \ubc14\uc6b4\uc2a4, \ubc29\uc0ac \ubc29\ucd9c, \uac04\uc12d\uc5d0 \ub300\ud55c \ubbfc\uac10\ub3c4\ub97c \uc904\uc5ec \uc90d\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc804\uae30 \uc548\uc804\uc5d0 \uae30\uc5ec\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ubcf4\ud638 \uc811\uc9c0\ub294 \uace0\uc7a5 \uc804\ub958\uac00 \ud750\ub97c \uc218 \uc788\ub3c4\ub85d \uc758\ub3c4\uc801\uc73c\ub85c \uc784\ud53c\ub358\uc2a4\uac00 \ub0ae\uc740 \uacbd\ub85c\ub97c \uc81c\uacf5\ud558\uc5ec \ud4e8\uc988, \ud68c\ub85c \ucc28\ub2e8\uae30 \ub610\ub294 \uae30\ud0c0 \ubcf4\ud638 \uc7a5\uce58\uac00 \uc791\ub3d9\ud558\uac8c \ud569\ub2c8\ub2e4. \uc774 \uc548\uc804 \uae30\ub2a5\uc740 \uc77c\ubc18\uc801\uc778 \uc2e0\ud638 \uadc0\ud658\uacfc \ub2e4\ub985\ub2c8\ub2e4. \ubcf4\ud638 \uc811\uc9c0 \uc124\uacc4\ub294 \uc81c\ud488 \uad6c\uc870\uc640 \uc801\uc6a9\ub418\ub294 \uc804\uae30 \uc548\uc804 \ud45c\uc900\uc758 \uaddc\uc81c\ub97c \ubc1b\uc73c\ubbc0\ub85c, \uc77c\ubc18\uc801\uc778 PCB \uc811\uc9c0 \uaddc\uce59\uc744 \uc784\uc758\ub85c \uc801\uc6a9\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uac04\ub2e8\ud55c \ud68c\ub85c\uc5d0\uc11c GND\ub294 \uc5b4\ub5bb\uac8c \uc791\ub3d9\ud558\ub098\uc694?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ub9c8\uc774\ud06c\ub85c\ucee8\ud2b8\ub864\ub7ec\uc5d0 5 V \uc804\uc6d0\uc744 \uacf5\uae09\ud558\ub294 \uacbd\uc6b0\ub97c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\uc804\uc6d0\uc740 5 V \ucd9c\ub825 \ub2e8\uc790\uc640 \uadc0\ud658 \ub2e8\uc790 \uc0ac\uc774\uc5d0 \uc804\uc704\ucc28\ub97c \ub9cc\ub4ed\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uadc0\ud658 \ub2e8\uc790\ub97c GND\ub85c \uc9c0\uc815\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc804\uc6d0\uc5d0\uc11c \ub098\uc628 \uc804\ub958\ub294 \ub9c8\uc774\ud06c\ub85c\ucee8\ud2b8\ub864\ub7ec\uc640 \uc8fc\ubcc0 \ubd80\ud488\uc744 \ud1b5\uacfc\ud55c \ub4a4 GND \ub124\ud2b8\uc6cc\ud06c\ub97c \ud1b5\ud574 \uc804\uc6d0\uc73c\ub85c \ub3cc\uc544\uac11\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc2e0\ud638 \uc804\uc555\uc740 \ub3d9\uc77c\ud55c GND \uae30\uc900\uc810\uc744 \uae30\uc900\uc73c\ub85c \ud574\uc11d\ub429\ub2c8\ub2e4.<\/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\">\uc804\ub958\ub294 \ud3d0\ud68c\ub85c\ub97c \ub530\ub77c \ud758\ub7ec\uc57c \ud569\ub2c8\ub2e4. \uace0\uc8fc\ud30c \uadc0\ud658 \uc804\ub958\ub294 \uae30\uc900 \ud3c9\uba74\uc5d0\uc11c \uc2e0\ud638 \ud2b8\ub808\uc774\uc2a4 \ubc14\ub85c \uc544\ub798\uc5d0 \uc788\ub294 \uc778\ub355\ud134\uc2a4\uac00 \uac00\uc7a5 \ub0ae\uc740 \uacbd\ub85c\ub97c \ub530\ub985\ub2c8\ub2e4.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uc13c\uc11c\uc758 \uc811\uc9c0\ubcf4\ub2e4 \uc13c\uc11c \ucd9c\ub825\uc774 2 V \ub192\uace0 \ub9c8\uc774\ud06c\ub85c\ucee8\ud2b8\ub864\ub7ec\uc758 \uc811\uc9c0 \uc804\uc704\uac00 \uc13c\uc11c \uc811\uc9c0\uc640 0.5 V \ucc28\uc774\uac00 \ub09c\ub2e4\uba74, \uc624\ud504\uc14b \ubc29\ud5a5\uc5d0 \ub530\ub77c \uc218\uc2e0\uae30\ub294 1.5 V \ub610\ub294 2.5 V\ub85c \uc778\uc2dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ucc28\uc774\ub294 \uce21\uc815 \uc624\ucc28\ub098 \ub17c\ub9ac \uc624\ub958\uae4c\uc9c0 \uc77c\uc73c\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc88b\uc740 \uc811\uc9c0\ub294 \uc5f0\uacb0 \uc0c1\ud0dc\ubfd0\ub9cc \uc544\ub2c8\ub77c \uadc0\ud658 \uacbd\ub85c\uc758 \uc784\ud53c\ub358\uc2a4\uc640\ub3c4 \uad00\ub828\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uace0\uc8fc\ud30c\uc5d0\uc11c \uadc0\ud658 \uc804\ub958\uac00 \ucd94\uc0c1\uc801\uc778 \uc758\ubbf8\uc758 \u201c\ucd5c\ub2e8\u201d \uacbd\ub85c \ud558\ub098\ub9cc \ub530\ub77c \ud750\ub974\ub294 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4. \uc804\ub958\ub294 \uc784\ud53c\ub358\uc2a4\uc5d0 \ub530\ub77c \uc774\uc6a9 \uac00\ub2a5\ud55c \uacbd\ub85c\ub4e4\ub85c \ubd84\uc0b0\ub418\uba70, \ub8e8\ud504 \uc778\ub355\ud134\uc2a4\uac00 \ub0ae\uc740 \uae30\uc900 \ud3c9\uba74\uc5d0\uc11c \uc2e0\ud638 \ud2b8\ub808\uc774\uc2a4 \uac00\uae4c\uc774\uc5d0 \uc9d1\uc911\ub418\ub294 \uacbd\ud5a5\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uae30\uc900 \ud3c9\uba74\uc5d0 \ud2c8\uc774\ub098 \uc2ac\ub86f\uc774 \uc788\uc73c\uba74 \uadc0\ud658 \uc804\ub958\uac00 \uc6b0\ud68c\ud574\uc57c \ud558\ubbc0\ub85c \ub8e8\ud504 \uba74\uc801, \ub178\uc774\uc988, \ubc29\uc0ac\uac00 \uc99d\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc77c\ubc18\uc801\uc778 \uc811\uc9c0 \uc720\ud615<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc811\uc9c0\ub77c\ub294 \ub9d0\uc740 \uc11c\ub85c \ub2e4\ub978 \uc5ed\ud560\uc744 \ud558\ub294 \uc5ec\ub7ec \ub178\ub4dc\ub098 \ub3c4\uccb4\ub97c \uac00\ub9ac\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc811\uc9c0 \uc774\ub984\uc740 \uac01 \uc811\uc9c0\uc758 \uad00\uacc4\ub97c \uba85\ud655\ud788 \uc815\uc758\ud55c \uacbd\uc6b0\uc5d0\ub9cc \uc720\uc6a9\ud569\ub2c8\ub2e4.<\/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\">\uc77c\ubc18\uc801\uc778 \ud68c\ub85c\ub3c4 \uc811\uc9c0 \uae30\ud638: \ub300\uc9c0\/\ubcf4\ud638 \uc811\uc9c0(\uac00\ub85c\uc120 3\uac1c), \uc100\uc2dc \uc811\uc9c0(\uc0ac\uc120 \ud574\uce6d), \uc2e0\ud638\/\ub514\uc9c0\ud138 \uc811\uc9c0(\uc0bc\uac01\ud615 \ub610\ub294 \ud654\uc0b4\ucd09).<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\uc811\uc9c0 \uc720\ud615<\/th><th>\uc8fc\uc694 \ubaa9\uc801<\/th><th>\uc77c\ubc18\uc801\uc778 \uc6a9\ub3c4<\/th><th>\uc911\uc694\ud55c \uc8fc\uc758 \uc0ac\ud56d<\/th><\/tr><tr><td>\ud68c\ub85c \uc811\uc9c0 \/ 0 V<\/td><td>\uc804\uc555 \uae30\uc900 \ubc0f \uc804\ub958 \uadc0\ud658<\/td><td>\ub300\ubd80\ubd84\uc758 \uc804\uc790 \ud68c\ub85c<\/td><td>\ub300\uc9c0\uc640 \uc808\uc5f0\ub41c \uc0c1\ud0dc\uc77c \uc218 \uc788\uc74c<\/td><\/tr><tr><td>\uc2e0\ud638 \uc811\uc9c0<\/td><td>\uc2e0\ud638\uc758 \uae30\uc900\uc810 \ubc0f \uadc0\ud658 \uacbd\ub85c<\/td><td>\uc13c\uc11c, \uc99d\ud3ed\uae30, \uc778\ud130\ud398\uc774\uc2a4<\/td><td>\ub178\uc774\uc988 \uc804\ub958\uac00 \ubbf8\uc57d\ud55c \uc2e0\ud638\ub97c \uc190\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc74c<\/td><\/tr><tr><td>\uc804\uc6d0 \uc811\uc9c0<\/td><td>\ubd80\ud558 \uc804\ub958\uac00 \ud070 \uacbd\uc6b0\uc758 \uadc0\ud658 \uacbd\ub85c<\/td><td>\ubaa8\ud130, \ucee8\ubc84\ud130, \uc804\ub825\ub2e8<\/td><td>\ud070 \uc804\ub958\ub85c \uc778\ud574 \uc804\uc555 \uac15\ud558\uc640 \uc811\uc9c0 \ubc14\uc6b4\uc2a4\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc74c<\/td><\/tr><tr><td>\uc544\ub0a0\ub85c\uadf8 \uc811\uc9c0(AGND)<\/td><td>\ubbfc\uac10\ud55c \uc544\ub0a0\ub85c\uadf8 \ud68c\ub85c\uc758 \uae30\uc900\uc810<\/td><td>ADC, DAC, \uc99d\ud3ed\uae30<\/td><td>\uc774 \ud45c\uae30\ub9cc\uc73c\ub85c \ubcc4\ub3c4\uc758 \ud3c9\uba74\uc774 \ubc18\ub4dc\uc2dc \ud544\uc694\ud55c \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4<\/td><\/tr><tr><td>\ub514\uc9c0\ud138 \uc811\uc9c0(DGND)<\/td><td>\ub514\uc9c0\ud138 \uc2a4\uc704\uce6d \uc804\ub958\uc758 \uadc0\ud658 \uacbd\ub85c<\/td><td>MCU, FPGA, \ub85c\uc9c1<\/td><td>\ube60\ub978 \uc5d0\uc9c0\ub294 \uad11\ub300\uc5ed \ub178\uc774\uc988\ub97c \ubc1c\uc0dd\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4<\/td><\/tr><tr><td>\uc100\uc2dc \uc811\uc9c0<\/td><td>\uc804\ub3c4\uc131 \uc778\ud074\ub85c\uc800\uc5d0 \uc5f0\uacb0<\/td><td>\uc0b0\uc5c5\uc6a9 \uc7a5\ube44, \ucc28\ud3d0 \uc81c\ud488<\/td><td>\uc9c0\uc815\ub41c \uc9c0\uc810\uc5d0\uc11c \ub300\uc9c0, \ud68c\ub85c \uc811\uc9c0 \ub610\ub294 \ub458 \ubaa8\ub450\uc5d0 \uc5f0\uacb0\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4<\/td><\/tr><tr><td>\ubcf4\ud638 \uc811\uc9c0(PE)<\/td><td>\uac10\uc804 \ubc0f \uace0\uc7a5 \ubcf4\ud638<\/td><td>\uc0c1\uc6a9 \uc804\uc6d0\uc73c\ub85c \uc791\ub3d9\ud558\ub294 \uc7a5\ube44<\/td><td>\uc77c\ubc18\uc801\uc778 \ubd80\ud558 \uc804\ub958\uc758 \uadc0\ud658 \uacbd\ub85c\ub85c\ub294 \ubcf4\ud1b5 \uc0ac\uc6a9\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4<\/td><\/tr><tr><td>\uac00\uc0c1 \uc811\uc9c0<\/td><td>\ub2a5\ub3d9 \ub610\ub294 \uc218\ub3d9 \ubc29\uc2dd\uc73c\ub85c \uc0dd\uc131\ub41c \uae30\uc900 \uc804\uc555<\/td><td>\ub2e8\uc77c \uc804\uc6d0 \uc544\ub0a0\ub85c\uadf8 \ud68c\ub85c<\/td><td>\uc804\ub958 \uc6a9\ub7c9\uacfc \uc784\ud53c\ub358\uc2a4\uc5d0 \ud55c\uacc4\uac00 \uc788\uc2b5\ub2c8\ub2e4<\/td><\/tr><tr><td>\ubd80\ub3d9 \uc811\uc9c0<\/td><td>\uc758\ub3c4\uc801\uc73c\ub85c \ub300\uc9c0\uc5d0 \uc811\uc18d\ud558\uc9c0 \uc54a\uc740 \ub85c\uceec \uae30\uc900\uc810<\/td><td>\ubc30\ud130\ub9ac \ubc0f \uc808\uc5f0 \uc2dc\uc2a4\ud15c<\/td><td>\uc815\uc804 \uc6a9\ub7c9\uc774\ub098 \uacc4\uce21\uae30\ub97c \ud1b5\ud574 \ub300\uc9c0\uc640 \uacb0\ud569\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">National Instruments\ub294 \uc811\uc9c0 \uae30\ud638\uac00 \uc11c\ub85c \ubc18\ub4dc\uc2dc \ub3d9\uc77c\ud55c \uc758\ubbf8\ub97c \uac16\ub294 \uac83\uc740 \uc544\ub2c8\uba70 \uc811\uc9c0 \uc0ac\uc774\uc5d0 \uce21\uc815 \uac00\ub2a5\ud55c \uc804\uc555\uc774 \uc874\uc7ac\ud560 \uc218 \uc788\ub2e4\uace0 \uc124\uba85\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc124\uacc4\uc790\ub294 \ubaa8\ub4e0 \uc811\uc9c0 \uae30\ub2a5\uc744 \uc815\uc758\ub418\uc9c0 \uc54a\uc740 \ud558\ub098\uc758 <code>GND<\/code> \ub124\ud2b8\uc5d0 \ubc30\uce58\ud558\ub294 \ub300\uc2e0 \uc62c\ubc14\ub978 \uae30\ud638\uc640 \ub124\ud2b8 \uc774\ub984\uc744 \uc0ac\uc6a9\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">GND\uc640 \ub300\uc9c0, \uc100\uc2dc \ubc0f \uc911\uc131\uc120\uc758 \ucc28\uc774<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \uc6a9\uc5b4\ub4e4\uc740 \uc11c\ub85c \uad00\ub828\ub418\uc5b4 \uc788\uc9c0\ub9cc \ub3d9\uc758\uc5b4\ub294 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\uc640 \ub300\uc9c0 \uc811\uc9c0\uc758 \ucc28\uc774<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ud68c\ub85c GND\ub294 \ud68c\ub85c \ub0b4\uc5d0\uc11c \uc120\ud0dd\ud55c \uc804\uae30\uc801 \uae30\uc900\uc810\uc785\ub2c8\ub2e4. \ub300\uc9c0 \uc811\uc9c0\ub294 \ubb3c\ub9ac\uc801 \ub300\uc9c0 \ub610\ub294 \uc124\ube44\uc758 \ubcf4\ud638 \uc811\uc9c0 \uc2dc\uc2a4\ud15c\uc5d0 \uc758\ub3c4\uc801\uc73c\ub85c \uc5f0\uacb0\ud55c \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud68c\ub85c GND\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uad6c\uc131\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ubcf4\ud638 \uc811\uc9c0\uc5d0 \uc9c1\uc811 \uc811\uc18d\ub428<\/li>\n\n\n\n<li>\ucee4\ud328\uc2dc\ud130\ub098 \uc784\ud53c\ub358\uc2a4 \ub124\ud2b8\uc6cc\ud06c\ub97c \ud1b5\ud574 \uc100\uc2dc \ub610\ub294 \ub300\uc9c0\uc5d0 \uacb0\ud569\ub428<\/li>\n\n\n\n<li>\uc81c\uc5b4\ub41c \ub2e8\uc77c \uc9c0\uc810\uc5d0\uc11c \uc5f0\uacb0\ub428 \ub610\ub294<\/li>\n\n\n\n<li>\uc815\uc0c1 \uc791\ub3d9 \uc870\uac74\uc5d0\uc11c \uc644\uc804\ud788 \uc808\uc5f0\ub428<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc801\uc808\ud55c \uad6c\uc131\uc740 \uac10\uc804 \ubcf4\ud638, \uc808\uc5f0 \uc815\uaca9, ESD, \uc11c\uc9c0, EMI, \uc778\ud130\ud398\uc774\uc2a4 \ubc0f \uc2dc\uc2a4\ud15c \uc218\uc900\uc758 \uc811\uc9c0 \ubc29\uc2dd\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\uc640 \uc100\uc2dc \uc811\uc9c0\uc758 \ucc28\uc774<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc100\uc2dc \uc811\uc9c0\ub294 \uc804\ub3c4\uc131 \uc778\ud074\ub85c\uc800, \ud504\ub808\uc784, \uc2e4\ub4dc \ub610\ub294 \uc7a5\ucc29 \uad6c\uc870\ubb3c\uc5d0 \uc5f0\uacb0\ub429\ub2c8\ub2e4. ESD \ubc0f \uace0\uc8fc\ud30c \uac04\uc12d\uc744 \uc704\ud55c \uacbd\ub85c\ub97c \uc81c\uacf5\ud560 \uc218 \uc788\uc73c\uba70 \ubcf4\ud638 \uc811\uc9c0\uc5d0\ub3c4 \uc5f0\uacb0\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud68c\ub85c \uc811\uc9c0\uc640 \uc100\uc2dc \uc811\uc9c0\ub294 \uc9c1\uc811 \uc5f0\uacb0\ud558\uac70\ub098, \ubd80\ud488 \ub124\ud2b8\uc6cc\ud06c\ub97c \ud1b5\ud574 \uc5f0\uacb0\ud558\uac70\ub098, \uc11c\ub85c \uc808\uc5f0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ucee4\ub125\ud130 \uc2e4\ub4dc\ub294 \uc2e0\ud638 \uc811\uc9c0 \ub124\ud2b8\uc6cc\ud06c\ub97c \uc9c0\ub098\ub294 \uae34 \ubc30\uc120 \ub300\uc2e0 \uc100\uc2dc\uc5d0 \uc9e7\uace0 \uc778\ub355\ud134\uc2a4\uac00 \ub0ae\uc740 \uacbd\ub85c\ub85c \uc5f0\uacb0\ud574\uc57c \ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4. \uc774 \uc5f0\uacb0\uc740 \uc81c\ud488\uc758 EMC \ubc0f \uc548\uc804 \uc124\uacc4\uc758 \uc77c\ubd80\ub85c \uacc4\ud68d\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\uc640 \uc911\uc131\uc120\uc758 \ucc28\uc774<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc911\uc131\uc120\uc740 AC \ubc30\uc804 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc811\uc9c0\ub41c \ub3c4\uccb4\uc774\uba70 \uc77c\ubc18\uc801\uc73c\ub85c \ubd80\ud558 \uc804\ub958\ub97c \uc804\ub2ec\ud569\ub2c8\ub2e4. \ubcf4\ud638 \uc811\uc9c0\uc120\uc740 \uc548\uc804\uc744 \uc704\ud55c \ub3c4\uccb4\uc774\uba70 \uc77c\ubc18\uc801\uc73c\ub85c \ub204\uc124 \uc804\ub958\ub098 \uace0\uc7a5 \uc804\ub958\ub9cc \uc804\ub2ec\ud569\ub2c8\ub2e4. \uc5b4\ub290 \ucabd\ub3c4 \ud68c\ub85c GND\uc758 \uc784\uc758\uc801\uc778 \ub300\uccb4\ubb3c\ub85c \ucde8\uae09\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc804\uae30 \uc124\ube44\uc5d0\uc11c\ub294 \uc9c0\uc815\ub41c \uc9c0\uc810\uc5d0\uc11c \uc911\uc131\uc120\uacfc \ubcf4\ud638 \uc811\uc9c0\uc120\uc744 \uc811\uc18d\ud560 \uc218 \uc788\uc9c0\ub9cc, \ub2e4\ub978 \uacf3\uc5d0\uc11c \uc5f0\uacb0\ud558\uba74 \uc704\ud5d8\ud55c \uc811\ucd09 \uc804\ub958\ub098 \ubcd1\ub82c \uc804\ub958 \uacbd\ub85c\uac00 \uc0dd\uae30\uac70\ub098 \uaddc\uc815\uc744 \uc704\ubc18\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc0c1\uc6a9 \uc804\uc6d0 \ubc30\uc120\uc740 \uad00\ub828 \uaddc\uc815\uc5d0 \ub530\ub77c \uc790\uaca9\uc744 \uac16\ucd98 \uc778\ub825\ub9cc \uc124\uacc4\ud558\uace0 \uc815\ube44\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">GND\ub294 \uc591\uadf9\uc778\uac00 \uc74c\uadf9\uc778\uac00?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GND\ub294 \ubcf8\uc9c8\uc801\uc73c\ub85c \uc591\uadf9\ub3c4 \uc74c\uadf9\ub3c4 \uc544\ub2d9\ub2c8\ub2e4. \uae30\uc900\uc810\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc77c\ubc18\uc801\uc778 \ub2e8\uc77c \uc804\uc6d0 \ub514\uc9c0\ud138 \ud68c\ub85c\uc5d0\uc11c\ub294 \uc804\uc6d0\uc758 \uc74c\uadf9 \ub2e8\uc790\ub97c GND\ub85c \uc9c0\uc815\ud558\ubbc0\ub85c \ub2e4\ub978 \uc804\uc6d0 \ub808\uc77c\uc740 \uc774\uc5d0 \ub300\ud574 \uc591\uc804\uc555\uc774 \ub429\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uc774\ub294 \uc124\uacc4\uc0c1\uc758 \uc120\ud0dd\uc774\uc9c0 \ubcf4\ud3b8\uc801\uc778 \uaddc\uce59\uc740 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\ub978 \uc608\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc591\uc804\uc6d0\uc5d0\uc11c\ub294 \uc804\uc6d0 \uc911\uac04\uc810\uc744 GND\ub85c \uc0ac\uc6a9\ud558\uc5ec +12 V \ubc0f \u221212 V \ub808\uc77c\uc744 \uad6c\uc131\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc77c\ubd80 \ub808\uac70\uc2dc \uc2dc\uc2a4\ud15c\uacfc \ud2b9\uc218 \uc2dc\uc2a4\ud15c\uc740 \uc591\uc804\uc704 \uc811\uc9c0 \uad6c\uc870\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uac00\uc0c1 \uc811\uc9c0\ub294 \uc804\uc6d0 \uc804\uc555\uc758 \uc808\ubc18\uc5d0 \uc704\uce58\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 5 V \uc544\ub0a0\ub85c\uadf8 \ud68c\ub85c\uc5d0\uc11c\ub294 2.5 V\uac00 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc808\uc5f0\ub41c 2\ucc28 \ud68c\ub85c\uc758 GND\ub294 1\ucc28\uce21 \uc811\uc9c0 \ubc0f \ub300\uc9c0\uc5d0 \ub300\ud574 \ubd80\ub3d9 \uc0c1\ud0dc\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">GND\ub77c\uace0 \ud45c\uc2dc\ub41c \ub2e8\uc790\uac00 \uc804\uc6d0 \uc74c\uadf9, \uc100\uc2dc \ub610\ub294 \ub300\uc9c0\uc640 \ub3d9\uc77c\ud558\ub2e4\uace0 \uac00\uc815\ud558\uae30 \uc804\uc5d0 \ud56d\uc0c1 \ud68c\ub85c\ub3c4\uc640 \uc804\uc6d0 \uad6c\uc870\ub97c \ud655\uc778\ud558\uc138\uc694.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PCB\uc758 \uc811\uc9c0\uba74\uc774\ub780?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc811\uc9c0\uba74\uc740 \uc811\uc9c0 \ub124\ud2b8\uc5d0 \uc5f0\uacb0\ub41c \ube44\uad50\uc801 \ub113\uc740 \uad6c\ub9ac \uc601\uc5ed\uc785\ub2c8\ub2e4. PCB \ub0b4\ubd80\uce35\uc758 \ub300\ubd80\ubd84\uc744 \ucc28\uc9c0\ud558\uac70\ub098 \uc678\ubd80\uce35\uc758 \uad6c\ub9ac \ucc44\uc6c0 \uc601\uc5ed\uc73c\ub85c \uad6c\uc131\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc798 \uc124\uacc4\ub41c \uc811\uc9c0\uba74\uc740 \uae38\uace0 \uc881\uc740 \uc811\uc9c0 \ubc30\uc120\ubcf4\ub2e4 \uc800\ud56d\uacfc \uc778\ub355\ud134\uc2a4\uac00 \ub0ae\uc2b5\ub2c8\ub2e4. \ub610\ud55c \uace0\uc8fc\ud30c \uc2e0\ud638 \ubc0f \ub514\ucee4\ud50c\ub9c1 \uc804\ub958\uc5d0 \uc9e7\uc740 \uadc0\ud658 \uacbd\ub85c\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. Texas Instruments\uc640 Analog Devices\ub294 \uadc0\ud658 \uc804\ub958, EMI \uc81c\uc5b4 \ubc0f \uace0\uc18d \uc804\uc1a1 \uad6c\uc870\ub97c \uc704\ud574 \uc784\ud53c\ub358\uc2a4\uac00 \ub0ae\uc740 \uc811\uc9c0\uba74\uc774 \uc911\uc694\ud558\ub2e4\uace0 \uac15\uc870\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc5f0\uc18d\uc801\uc778 \uc811\uc9c0\uba74\uc758 \uc7a5\uc810<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uadc0\ud658 \uacbd\ub85c \uc784\ud53c\ub358\uc2a4 \uac10\uc18c<\/li>\n\n\n\n<li>\ub354 \uc791\uc740 \uc2e0\ud638 \uc804\ub958 \ub8e8\ud504 \uba74\uc801<\/li>\n\n\n\n<li>\ub354 \ub098\uc740 \uc2e0\ud638 \ubb34\uacb0\uc131<\/li>\n\n\n\n<li>\uacf5\ud1b5 \uc784\ud53c\ub358\uc2a4 \uacb0\ud569 \uac10\uc18c<\/li>\n\n\n\n<li>\ubc29\uc0ac \ubc29\ucd9c \uac10\uc18c \ubc0f \uac04\uc12d \ub0b4\uc131 \ud5a5\uc0c1<\/li>\n\n\n\n<li>\ub354 \uc608\uce21 \uac00\ub2a5\ud55c \uc81c\uc5b4 \uc784\ud53c\ub358\uc2a4<\/li>\n\n\n\n<li>\uc77c\ubd80 \ub808\uc774\uc544\uc6c3\uc5d0\uc11c \uc5f4 \ud655\uc0b0 \uac1c\uc120<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ub113\uc740 \uad6c\ub9ac \uba74\uc801\uc774 \uc788\ub2e4\uace0 \ud574\uc11c \uc811\uc9c0\uba74\uc774 \uc790\ub3d9\uc73c\ub85c \ud6a8\uacfc\uc801\uc778 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4. \uc881\uc740 \uc5f0\uacb0\ubd80, \uc811\uc9c0\uba74 \ubd84\ud560, \uace0\ub9bd\ub41c \uad6c\ub9ac \uc601\uc5ed, \ub4dc\ubb38 \ube44\uc544 \uc5f0\uacb0, \uc798\ubabb \ubc30\uce58\ub41c \uc548\ud2f0\ud328\ub4dc\ub294 \ub9ac\ud134 \uacbd\ub85c\ub97c \ub04a\uac70\ub098 \uc881\ud790 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PCB \uc811\uc9c0 \uc124\uacc4 \ubaa8\ubc94 \uc0ac\ub840<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ubaa8\ub4e0 \uae30\ud310\uc5d0 \uc801\ud569\ud55c \ub2e8 \ud558\ub098\uc758 \uc811\uc9c0 \ub808\uc774\uc544\uc6c3\uc740 \uc5c6\uc2b5\ub2c8\ub2e4. \uc800\uc8fc\ud30c \uc13c\uc11c, RF \ubaa8\ub4c8, \ubaa8\ud130 \uc81c\uc5b4\uae30, \uc0c1\uc6a9 \uc804\uc6d0 \uc81c\ud488\uc740 \uc694\uad6c \uc0ac\ud56d\uc774 \uc11c\ub85c \ub2e4\ub985\ub2c8\ub2e4. \ub2e4\uc74c \uc6d0\uce59\uc740 \uc720\uc6a9\ud55c \ucd9c\ubc1c\uc810\uc774 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \ub124\ud2b8 \uc774\ub984\uc774 \uc544\ub2c8\ub77c \uc804\ub958 \uacbd\ub85c\ubd80\ud130 \uc0b4\ud3b4\ubcf4\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uac01 \uc804\ub958\uac00 \uc5b4\ub514\uc11c \uc2dc\uc791\ub418\uace0 \uc5b4\ub5bb\uac8c \uc804\uc6d0\uc73c\ub85c \ub3cc\uc544\uac00\ub294\uc9c0 \ud30c\uc545\ud558\uc138\uc694. \uc2a4\uc704\uce6d \ub808\uade4\ub808\uc774\ud130, \ud074\ub85d \ub77c\uc778, \uac8c\uc774\ud2b8 \ub4dc\ub77c\uc774\ubc84, \ubaa8\ud130, \ub9b4\ub808\uc774, \uace0\uc804\ub958 LED, ADC \uc785\ub825, \ud1b5\uc2e0 \ucee4\ub125\ud130\uc5d0 \ud2b9\ud788 \uc8fc\uc758\ub97c \uae30\uc6b8\uc774\uc138\uc694.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub178\uc774\uc988\uac00 \ub9ce\uac70\ub098 \uc804\ub958\uac00 \ud070 \ub8e8\ud504\uac00 \uc791\uac8c \uc720\uc9c0\ub418\uace0 \ubbfc\uac10\ud55c \ub9ac\ud134 \uacbd\ub85c\ub97c \uacf5\uc720\ud558\uc9c0 \uc54a\ub3c4\ub85d \ud68c\ub85c\ub97c \ubc30\uce58\ud558\uace0 \ubc30\uc120\ud558\uc138\uc694. \ub450 \ub124\ud2b8\uc758 \uc774\ub984\uc774 \ubaa8\ub450 GND\uc774\ub354\ub77c\ub3c4 \uc784\ud53c\ub358\uc2a4\ub97c \uacf5\uc720\ud558\uba74 \uc11c\ub85c \uac04\uc12d\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \uac00\ub2a5\ud558\uba74 \uc5f0\uc18d\uc801\uc778 \uae30\uc900\uba74 \uc0ac\uc6a9\ud558\uae30<\/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\">\uc811\uc9c0\uba74 \ubd84\ud560\uc774 \uc704\ud5d8\ud55c \uc774\uc720: \uace0\uc18d \ud2b8\ub808\uc774\uc2a4\ub97c \ubd84\ud560\uba74\uc774\ub098 \uac04\uadf9 \uc704\ub85c \ubc30\uc120\ud558\uba74 \ub9ac\ud134 \uc804\ub958\uac00 \ub113\uc740 \ub8e8\ud504\ub97c \uc774\ub8e8\uac8c \ub418\uc5b4 \ub8e8\ud504 \uc778\ub355\ud134\uc2a4\uc640 EMI\uac00 \ud06c\uac8c \uc99d\uac00\ud569\ub2c8\ub2e4.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ub300\ubd80\ubd84\uc758 \ub2e4\uce35 \ub514\uc9c0\ud138 \ubc0f \ud63c\ud569 \uc2e0\ud638 \uae30\ud310\uc5d0\uc11c\ub294 \uc2e0\ud638\uce35\uc5d0 \uc778\uc811\ud55c \ub2e8\ub2e8\ud55c \uc811\uc9c0\uba74\uc774 \uc548\uc815\uc801\uc778 \uae30\uc900\uacfc \uc9e7\uc740 \ub9ac\ud134 \uacbd\ub85c\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uace0\uc18d \ud2b8\ub808\uc774\uc2a4\uac00 \uc804\uccb4 \uacbd\ub85c\uc5d0\uc11c \ub3d9\uc77c\ud55c \uc5f0\uc18d \uae30\uc900\uba74 \uc704\ub97c \uc9c0\ub098\ub3c4\ub85d \ud558\uc138\uc694.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uae30\uc900\uba74\uc758 \ubd84\ud560\ubd80, \uc2ac\ub86f \ub610\ub294 \ube48 \uc601\uc5ed\uc744 \uac00\ub85c\uc9c8\ub7ec \uace0\uc18d \ud2b8\ub808\uc774\uc2a4\ub97c \ubc30\uc120\ud558\uc9c0 \ub9c8\uc138\uc694. \ub9ac\ud134 \uc804\ub958\uac00 \ubd88\uc5f0\uc18d \uad6c\uac04\uc744 \ub3cc\uc544\uac00\uc57c \ud558\uba74 \ub8e8\ud504\uac00 \ucee4\uc838 \ub204\ud654\uc640 EMI\uac00 \uc99d\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. TI\ub294 \ubd84\ud560\uba74\uc744 \uac00\ub85c\uc9c0\ub974\ub294 \uc2e0\ud638\uac00 \ub9ac\ud134 \uc804\ub958\ub97c \ud070 \ub8e8\ud504\ub85c \ud750\ub974\uac8c \ud55c\ub2e4\uace0 \ud2b9\ud788 \uacbd\uace0\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \uae30\ub2a5\ubcc4\ub85c \ubd80\ud488 \ubc30\uce58\ud558\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\ub7ec \uc811\uc9c0 \ub124\ud2b8 \uc774\ub984\uc744 \uc9c0\uc815\ud558\ub294 \uac83\ubcf4\ub2e4 \ubb3c\ub9ac\uc801\uc778 \ubc30\uce58\uac00 \ub354 \uc911\uc694\ud560 \ub54c\uac00 \ub9ce\uc2b5\ub2c8\ub2e4. \uc544\ub0a0\ub85c\uadf8, \ub514\uc9c0\ud138, \uc2a4\uc704\uce6d \uc804\uc6d0, \uace0\uc804\ub958 \uc601\uc5ed\uc744 \uadf8\ub8f9\ud654\ud558\uc5ec \uac01 \uc601\uc5ed\uc758 \uc804\ub958\uac00 \uc81c\uc5b4\ub41c \ubc94\uc704 \uc548\uc5d0\uc11c \uc21c\ud658\ud558\ub3c4\ub85d \ud558\uc138\uc694.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubbfc\uac10\ud55c \uc544\ub0a0\ub85c\uadf8 \uc785\ub825\uc740 \ud074\ub85d, \uc2a4\uc704\uce6d \ub178\ub4dc, \uace0\uc18d \ub514\uc9c0\ud138 \ubc84\uc2a4\uc5d0\uc11c \ub5a8\uc5b4\ub728\ub824 \ubc30\uce58\ud558\uc138\uc694. \ub450 \uc601\uc5ed\uc774 \ud558\ub098\uc758 \uc811\uc9c0\uba74\uc744 \uacf5\uc720\ud55c\ub2e4\ub294 \uc774\uc720\ub9cc\uc73c\ub85c \ub514\uc9c0\ud138 \uc2e0\ud638\ub97c \uc544\ub0a0\ub85c\uadf8 \uc601\uc5ed\uc5d0 \ubc30\uc120\ud558\uc9c0 \ub9c8\uc138\uc694.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. \ub370\uc774\ud130\uc2dc\ud2b8\uc5d0 \ub530\ub77c AGND\uc640 DGND \ub2e4\ub8e8\uae30<\/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\">\ud6a8\uacfc\uc801\uc778 \ubd84\ud560: \uc544\ub0a0\ub85c\uadf8 \ubd80\ud488\uacfc \ub514\uc9c0\ud138 \ubd80\ud488\uc744 \ubb3c\ub9ac\uc801\uc73c\ub85c \ubd84\ub9ac\ud558\ub418 \uc5f0\uc18d\uc801\uc778 \uc811\uc9c0\uba74\uc744 \uacf5\uc720\ud558\uc5ec, \ub178\uc774\uc988\uac00 \ub9ce\uc740 \ub514\uc9c0\ud138 \ub9ac\ud134 \uc804\ub958\uac00 \ubbfc\uac10\ud55c \uc544\ub0a0\ub85c\uadf8 \ud68c\ub85c\ub97c \ud1b5\uacfc\ud558\uc9c0 \uc54a\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">AGND \ubc0f DGND \ud540\uc740 \ud63c\ud569 \uc2e0\ud638 IC \ub0b4\ubd80\uc758 \uc11c\ub85c \ub2e4\ub978 \uae30\ub2a5\uc744 \ub098\ud0c0\ub0b4\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc73c\uba70, PCB \uc124\uacc4\uc790\uc5d0\uac8c \ub450 \uac1c\uc758 \uc808\uc5f0\ub41c \uc811\uc9c0\uba74\uc744 \ub9cc\ub4e4\ub77c\ub294 \ub73b\uc740 \uc544\ub2d9\ub2c8\ub2e4. \ub9ce\uc740 \ucee8\ubc84\ud130\ub294 \ub450 \ud540 \ubaa8\ub450 \uc7a5\uce58 \uac00\uae4c\uc774\uc5d0\uc11c \ub3d9\uc77c\ud55c \uc800\uc784\ud53c\ub358\uc2a4 \uae30\uc900\uba74\uc5d0 \uc5f0\uacb0\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub9ac\ud134 \uacbd\ub85c\ub97c \uac80\ud1a0\ud558\uc9c0 \uc54a\uace0 \uc811\uc9c0\ub97c \ubd84\ud560\ud558\uba74 \uc131\ub2a5\uc774 \uc800\ud558\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. IC \uc81c\uc870\uc5c5\uccb4\uc758 \uae30\uc900 \ub808\uc774\uc544\uc6c3\uc744 \ub530\ub974\uace0, \ub0b4\ubd80 \ub514\uc9c0\ud138 \uc804\ub958\ub97c \ud3c9\uac00\ud558\uba70, \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc774 \ubbfc\uac10\ud55c \uacbd\uc6b0 \uce21\uc815\uc73c\ub85c \uc124\uacc4\ub97c \uac80\uc99d\ud558\uc138\uc694.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. \ub514\ucee4\ud50c\ub9c1 \ub8e8\ud504\ub97c \uc9e7\uac8c \uc720\uc9c0\ud558\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uac01 \uace0\uc8fc\ud30c \ub514\ucee4\ud50c\ub9c1 \ucee4\ud328\uc2dc\ud130\ub97c \ud574\ub2f9 \uc804\uc6d0 \ubc0f \uc811\uc9c0 \ud540 \uac00\uae4c\uc774\uc5d0 \ubc30\uce58\ud558\uc138\uc694. \uc5f0\uacb0\ubd80\ub294 \uc9e7\uace0 \ub113\uac8c \ud558\uace0, \uc804\uc6d0 \ubc0f \uc811\uc9c0 \ube44\uc544\ub97c \ucee4\ud328\uc2dc\ud130 \ud328\ub4dc \uac00\uae4c\uc774\uc5d0 \ubc30\uce58\ud558\uc138\uc694.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubaa9\ud45c\ub294 IC, \ucee4\ud328\uc2dc\ud130, \uc804\uc6d0 \uc5f0\uacb0\ubd80, \uc811\uc9c0\uba74 \uc0ac\uc774\uc758 \ub8e8\ud504\ub97c \uc791\uace0 \uc778\ub355\ud134\uc2a4\uac00 \ub0ae\uac8c \ub9cc\ub4dc\ub294 \uac83\uc785\ub2c8\ub2e4. Analog Devices\ub294 \uc5f0\uacb0 \uc778\ub355\ud134\uc2a4\uac00 \ub514\ucee4\ud50c\ub9c1 \ud6a8\uacfc\ub97c \ub5a8\uc5b4\ub728\ub9ac\ubbc0\ub85c \uc9e7\uc740 \ud2b8\ub808\uc774\uc2a4\ub098 \ube44\uc544\ub97c \uc0ac\uc6a9\ud574 \uc800\uc784\ud53c\ub358\uc2a4 \uba74\uc5d0 \uc9c1\uc811 \uc5f0\uacb0\ud560 \uac83\uc744 \uad8c\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. \uc804\ud658 \uad6c\uac04\uc5d0\uc11c \ub9ac\ud134 \uacbd\ub85c\uc758 \uc5f0\uc18d\uc131 \ud655\ubcf4\ud558\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uace0\uc18d \uc2e0\ud638\uac00 \uce35\uc744 \ubc14\uafc0 \ub54c\ub294 \ub9ac\ud134 \uacbd\ub85c\ub3c4 \uae30\uc900\uba74 \uc0ac\uc774\uc5d0\uc11c \uc774\ub3d9\ud574\uc57c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub450 \uae30\uc900\uce35\uc774 \ubaa8\ub450 \uc811\uc9c0\uba74\uc774\ub77c\uba74 \uc2e0\ud638 \ube44\uc544 \uadfc\ucc98\uc5d0 \uc811\uc9c0 \uc2a4\ud2f0\uce6d \ube44\uc544\ub97c \ubc30\uce58\ud558\uc138\uc694. \uc2e0\ud638\uac00 \uae30\uc900\uc774 \uc11c\ub85c \ub2e4\ub978 \uba74 \uc0ac\uc774\ub97c \uc774\ub3d9\ud55c\ub2e4\uba74 \uc2a4\ud0dd\uc5c5\uacfc \uc8fc\ud30c\uc218 \uc131\ubd84\uc5d0 \ub9de\ub294 \ub9ac\ud134 \uacbd\ub85c \uc124\uacc4\ub97c \uc801\uc6a9\ud558\uc138\uc694.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">EMC \uc124\uacc4\uc0c1 \ud544\uc694\ud55c \uacbd\uc6b0 \uae30\ud310 \uac00\uc7a5\uc790\ub9ac, \ucc28\ud3d0 \uacbd\uacc4 \ub610\ub294 \ub178\uc774\uc988 \uc601\uc5ed \uc8fc\ubcc0\uc758 \uc811\uc9c0 \uad6c\ub9ac\ub97c \uc2a4\ud2f0\uce6d\ud558\uc138\uc694. \ubd80\uc720\ud558\ub294 \uad6c\ub9ac \uc601\uc5ed\uc740 \ud53c\ud558\uace0, \uc801\uc808\ud788 \uc5f0\uacb0\ud558\uac70\ub098 \uc81c\uac70\ud558\uc138\uc694.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. \uc804\uc555 \uac15\ud558\uc640 \ubc1c\uc5f4\uc744 \uace0\ub824\ud574 \uace0\uc804\ub958 \ub9ac\ud134 \uacbd\ub85c \ud06c\uae30 \uc815\ud558\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ubaa8\ud130, \ud788\ud130, LED, \ubc30\ud130\ub9ac, \uc804\ub825 \ubcc0\ud658\uae30\uc758 \ub9ac\ud134 \uacbd\ub85c\uc5d0\ub294 \ub113\uc740 \uad6c\ub9ac \uba74\uc801, \ub450\uaebc\uc6b4 \uad6c\ub9ac, \uc5ec\ub7ec \uac1c\uc758 \ube44\uc544 \ub610\ub294 \uc804\uc6a9 \uba74\uc774 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5b4\ub5a4 \uc811\uc9c0 \ud3f4\ub9ac\uace4\uc774\ub4e0 \ucda9\ubd84\ud558\ub2e4\uace0 \uac00\uc815\ud558\uc9c0 \ub9d0\uace0 \uc608\uc0c1 \uc804\uc555 \uac15\ud558\uc640 \uc628\ub3c4 \uc0c1\uc2b9\uc744 \uacc4\uc0b0\ud558\uc138\uc694.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub7ec\ud55c \uc804\ub958\uac00 \uc815\ubc00 \uc13c\uc11c \ubc0f \uae30\uc900 \uacbd\ub85c\ub97c \ud750\ub974\uc9c0 \uc54a\ub3c4\ub85d \ud558\uc138\uc694. \ubc00\ub9ac\ubcfc\ud2b8 \uc218\uc900\uc758 \uc815\ud655\ub3c4\uac00 \uc911\uc694\ud55c \uacbd\uc6b0 \ucf08\ube48 \uc5f0\uacb0\uc774\ub098 \ubcc4\ub3c4\uc758 \uc13c\uc2a4 \ub9ac\ud134\uc774 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8. \uc100\uc2dc \ubc0f \ubcf4\ud638 \uc811\uc9c0 \uc5f0\uacb0\uc744 \uc2e0\uc911\ud558\uac8c \uacc4\ud68d\ud558\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ucf00\uc774\ube14 \uc2e4\ub4dc, \uc100\uc2dc, \ud68c\ub85c \uc811\uc9c0, \ubcf4\ud638 \uc811\uc9c0\ub97c \uc5b4\ub514\uc5d0\uc11c \uc5f0\uacb0\ud560\uc9c0 \uc815\ud558\uc138\uc694. \uace0\uc7a5 \uc804\ub958, ESD, \uc11c\uc9c0, \uacf5\ud1b5 \ubaa8\ub4dc \ub178\uc774\uc988, \uc808\uc5f0, \uaddc\uc815\uc0c1 \uc774\uaca9 \uac70\ub9ac\ub97c \uace0\ub824\ud558\uc138\uc694. \uc548\uc804 \uc811\uc9c0 \ub3c4\uccb4\uc640 PCB \ubcf4\ud638 \uc811\uc9c0 \uacbd\ub85c\ub294 \uc694\uad6c\ub418\ub294 \ubcf4\ud638 \uae30\ub2a5\uc5d0 \ub9de\ub294 \ud06c\uae30\uc640 \uad6c\uc870\ub85c \uc124\uacc4\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud754\ud55c GND \uc124\uacc4 \uc2e4\uc218<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\ubaa8\ub4e0 \uc811\uc9c0 \uae30\ud638\uac00 \uac19\uc740 \ubb3c\ub9ac\uc801 \ub178\ub4dc\ub97c \ub098\ud0c0\ub0b8\ub2e4\uace0 \uac00\uc815\ud558\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ud68c\ub85c\ub3c4 \uae30\ud638\ub294 \ubcf5\uc7a1\ud568\uc744 \uc904\uc5ec \uc8fc\uc9c0\ub9cc \uc911\uc694\ud55c \ucc28\uc774\ub97c \uac10\ucd9c \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. \uc544\ub0a0\ub85c\uadf8 \uc811\uc9c0, \ub514\uc9c0\ud138 \uc811\uc9c0, \uc100\uc2dc, \uc808\uc5f0 \uc811\uc9c0, \ubcf4\ud638 \uc811\uc9c0 \uc0ac\uc774\uc758 \ub124\ud2b8 \uc774\ub984\uacfc \uc5f0\uacb0\uc744 \ud655\uc778\ud558\uc138\uc694.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ub9ac\ud134 \uacbd\ub85c \uacc4\ud68d \uc5c6\uc774 \uc811\uc9c0\uba74 \ubd84\ud560\ud558\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ubd84\ud560\ud558\uba74 \ub178\uc774\uc988\ub97c \ucc28\ub2e8\ud558\ub294 \uac83\ucc98\ub7fc \ubcf4\uc77c \uc218 \uc788\uc9c0\ub9cc, \uc2e0\ud638 \ub9ac\ud134 \uc804\ub958\uac00 \uae34 \uacbd\ub85c\ub97c \ub3cc\uc544\uac00\uac8c \ub9cc\ub4e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub7ec\uba74 \ub8e8\ud504 \uba74\uc801\uc774 \uc99d\uac00\ud558\uace0, \ubd84\ud560\ub85c \ud574\uacb0\ud558\ub824\ub358 \ubc14\ub85c \uadf8 EMI \ubb38\uc81c\uac00 \uc0dd\uae38 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ubbfc\uac10\ud55c \uc811\uc9c0 \uacbd\ub85c\uc5d0 \uace0\uc804\ub958 \ud758\ub9ac\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ubaa8\ud130\ub098 \uc2a4\uc704\uce6d \ub808\uade4\ub808\uc774\ud130\uac00 ADC \ub610\ub294 \uc13c\uc11c\uc640 \uc881\uc740 \ub9ac\ud134 \uacbd\ub85c\ub97c \uacf5\uc720\ud558\uba74, \uadf8\ub85c \uc778\ud55c \uc804\uc555 \uac15\ud558\uac00 \uce21\uc815 \uc2e0\ud638\uc758 \uc77c\ubd80\uac00 \ub429\ub2c8\ub2e4. \uc804\ub958\uac00 \ud750\ub974\ub294 \uc704\uce58\ub97c \uc81c\uc5b4\ud558\ub3c4\ub85d \ubd80\ud488 \ubc30\uce58\uc640 \uad6c\ub9ac \ud328\ud134\uc744 \uc124\uacc4\ud558\uc138\uc694.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uad00\ub828 \uc5c6\ub294 \uc811\uc9c0 \ub9ac\ud134\uc744 \ub370\uc774\uc9c0 \uccb4\uc778\uc73c\ub85c \uc5f0\uacb0\ud558\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\ub7ec \ubd80\ud558\ub97c \ud558\ub098\uc758 \uac00\ub294 \uc811\uc9c0 \ud2b8\ub808\uc774\uc2a4\ub97c \ub530\ub77c \uc9c1\ub82c\ub85c \uc5f0\uacb0\ud558\uba74 \ud55c \ubd80\ud558\uc758 \uc804\ub958\uac00 \ub2e4\ub978 \ubd80\ud558\uc758 \uae30\uc900 \uc804\uc704\ub97c \ubcc0\ub3d9\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc8fc\ud30c\uc218\uc640 \uc804\ub958\uc5d0 \ub530\ub77c \uc811\uc9c0\uba74, \uc2a4\ud0c0 \uc5f0\uacb0 \ub610\ub294 \uc138\uc2ec\ud558\uac8c \ubd84\ud560\ub41c \ub9ac\ud134 \ub124\ud2b8\uc6cc\ud06c\uac00 \ub354 \uc801\ud569\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc811\uc9c0 \uad6c\ub9ac\ub97c \uc774\uc0c1\uc801\uc778 \ub3c4\uccb4\ub85c \ucde8\uae09\ud558\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ubaa8\ub4e0 \uba74, \ud2b8\ub808\uc774\uc2a4, \ube44\uc544, \ucee4\ub125\ud130, \ucf00\uc774\ube14\uc5d0\ub294 \uc784\ud53c\ub358\uc2a4\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uc5d0\uc9c0 \uc18d\ub3c4\uac00 \ube60\ub974\uba74 \uba87 \ub098\ub178\ud5e8\ub9ac\ub3c4 \uc601\ud5a5\uc744 \uc904 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc9c1\ub958 \uc5f0\uc18d\uc131\ub9cc \ud655\uc778\ud558\uc9c0 \ub9d0\uace0 \uc881\uc740 \uc811\uc9c0\uba74 \uc5f0\uacb0\ubd80, \ube44\uc544 \ubc30\uce58, \ucee4\ub125\ud130 \ud540 \ud560\ub2f9, \ub9ac\ud134 \uacbd\ub85c \uc804\ud658\ub3c4 \uac80\ud1a0\ud558\uc138\uc694.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc2dc\ud5d8 \uc7a5\ube44\uc758 \uc811\uc9c0\ub97c \ubb34\uc2dc\ud558\uae30<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub9ce\uc740 \ubca4\uce58 \uc624\uc2e4\ub85c\uc2a4\ucf54\ud504\uc758 \uc811\uc9c0 \ud074\ub9bd\uc740 \ubcf4\ud638 \uc811\uc9c0\uc5d0 \uc5f0\uacb0\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub97c \uc804\uc555\uc774 \uac78\ub824 \uc788\uace0 \uc811\uc9c0 \uae30\uc900\uc774 \uc544\ub2cc \ub178\ub4dc\uc5d0 \uc5f0\uacb0\ud558\uba74 \ud574\ub2f9 \ub178\ub4dc\uac00 \uc811\uc9c0\uc5d0 \ub2e8\ub77d\ub418\uc5b4 \uc7a5\ube44\uac00 \uc190\uc0c1\ub418\uac70\ub098 \uac10\uc804 \uc704\ud5d8\uc774 \uc0dd\uae38 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud544\uc694\ud55c \uacbd\uc6b0 \uc815\uaca9\uc5d0 \ub9de\ub294 \ucc28\ub3d9 \ud504\ub85c\ube0c\ub098 \uc808\uc5f0 \uce21\uc815 \ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud558\uc138\uc694.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PCB\uc5d0\uc11c GND\ub97c \uc2dd\ubcc4\ud558\uace0 \ud14c\uc2a4\ud2b8\ud558\ub294 \ubc29\ubc95<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ud2b8\ub808\uc774\uc2a4 \uc0c9\uc0c1, \ucee4\ub125\ud130 \uc704\uce58 \ub610\ub294 \uc811\uc9c0\ucc98\ub7fc \ubcf4\uc774\ub294 \uae30\ud638\ub9cc \ubbff\uc9c0 \ub9c8\uc138\uc694. \ud68c\ub85c\ub3c4, PCB \ub370\uc774\ud130, \ubd80\ud488 \ub370\uc774\ud130\uc2dc\ud2b8, \uc548\uc804\ud55c \uce21\uc815 \uacb0\uacfc\ub97c \ud568\uaed8 \ud655\uc778\ud558\uc138\uc694.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc804\uc6d0\uc744 \ub048 \uc0c1\ud0dc\uc5d0\uc11c<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\ud68c\ub85c\ub3c4\uc5d0\uc11c \ub2e4\uc74c \uc811\uc9c0 \ub124\ud2b8\ub97c <code>GND<\/code>, <code>0V<\/code>, <code>AGND<\/code>, <code>DGND<\/code>, <code>PGND<\/code>, <code>CHASSIS<\/code>, \ubc0f <code>PE<\/code> \ud655\uc778\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\ub3c4\ud1b5 \ubaa8\ub4dc \ub610\ub294 \uc800\ud56d \ubaa8\ub4dc\ub97c \uc0ac\uc6a9\ud574 \uc758\ub3c4\ud55c \uc5f0\uacb0\uc744 \ud655\uc778\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\ucee4\ud328\uc2dc\ud130, \ubc18\ub3c4\uccb4, \ud544\ud130 \ub610\ub294 \uc808\uc5f0 \ubd80\ud488\uc73c\ub85c \uc778\ud574 \uac04\ub2e8\ud55c \ub3c4\ud1b5 \uac80\uc0ac\uc5d0\uc11c \uc5f0\uacb0\uc774 \ud655\uc778\ub418\uc9c0 \uc54a\uc744 \uc218 \uc788\ub2e4\ub294 \uc810\uc744 \uae30\uc5b5\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\uc7a5\ucc29 \uad6c\uba4d, \uc2e4\ub4dc, \ud14c\uc2a4\ud2b8 \ud53d\uc2a4\ucc98 \ub610\ub294 \ucee4\ub125\ud130\ub85c \uc778\ud574 \ubd84\ub9ac\ub41c \uc811\uc9c0 \uc601\uc5ed\uc774 \uc2e4\uc218\ub85c \ub2e8\ub77d\ub418\uc9c0 \uc54a\uc558\ub294\uc9c0 \ud655\uc778\ud558\uc138\uc694.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\uc804\uc6d0\uc774 \ucf1c\uc9c4 \uc0c1\ud0dc\uc5d0\uc11c<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\ud14c\uc2a4\ud2b8 \uc911\uc778 \ud68c\ub85c \uc601\uc5ed\uc5d0 \ub9de\ub294 \uae30\uc900\uc810\uc744 \uc120\ud0dd\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\uacc4\uce21\uae30\uc758 \uc785\ub825\uacfc \uc811\uc9c0 \uc5f0\uacb0\uc774 \uc608\uc0c1 \uacf5\ud1b5 \ubaa8\ub4dc \uc804\uc555\uc5d0 \ub300\ud574 \uc548\uc804\ud55c\uc9c0 \ud655\uc778\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\uc2e4\uc81c \ubd80\ud558 \uc870\uac74\uc5d0\uc11c \uc811\uc9c0 \uc9c0\uc810 \uac04 DC \uc804\uc555 \uac15\ud558\ub97c \uce21\uc815\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\uc9e7\uc740 \uc811\uc9c0 \uc2a4\ud504\ub9c1, \ucc28\ub3d9 \ud504\ub85c\ube0c \ub610\ub294 \uc801\uc808\ud55c \ud504\ub85c\ube59 \ubc29\ubc95\uc744 \uc0ac\uc6a9\ud574 \uc624\uc2e4\ub85c\uc2a4\ucf54\ud504\ub85c \uace0\uc8fc\ud30c \uc811\uc9c0 \ub178\uc774\uc988\ub97c \uc0b4\ud3b4\ubcf4\uc138\uc694.<\/li>\n\n\n\n<li>\uc2a4\uc704\uce6d, \ud1b5\uc2e0, \ubaa8\ud130 \uc2dc\ub3d9 \ubc0f \uae30\ud0c0 \ucd5c\uc545\uc758 \ub3d9\uc791 \uc870\uac74\uc5d0\uc11c \ud14c\uc2a4\ud2b8\ud558\uc138\uc694.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\ub3c4\ud1b5 \uac80\uc0ac\ub9cc\uc73c\ub85c\ub294 \uc811\uc9c0 \uc2dc\uc2a4\ud15c\uc758 \uc784\ud53c\ub358\uc2a4\uac00 \uc911\uc694\ud55c \uc8fc\ud30c\uc218\uc5d0\uc11c \ucda9\ubd84\ud788 \ub0ae\ub2e4\ub294 \uac83\uc744 \uc785\uc99d\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PCB \uc81c\uc791 \uc804 \uc811\uc9c0 \uc810\uac80 \ubaa9\ub85d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uac70\ubc84 \ubc0f \ub4dc\ub9b4 \ud30c\uc77c\uc744 \uc804\ub2ec\ud558\uae30 \uc804\uc5d0 \ub2e4\uc74c \uc0ac\ud56d\uc744 \uac04\ub2e8\ud788 \uac80\ud1a0\ud558\uc138\uc694.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ubaa8\ub4e0 \uc811\uc9c0 \uc601\uc5ed\uc5d0 \uc774\ub984\uc774 \uc9c0\uc815\ub418\uc5b4 \uc788\uace0 \uc758\ub3c4\uc5d0 \ub530\ub77c \uc5f0\uacb0\ub418\uc5b4 \uc788\ub098\uc694?<\/li>\n\n\n\n<li>\uace0\uc18d \ub610\ub294 \ubbfc\uac10\ud55c \uc2e0\ud638 \uc544\ub798\uc758 \uae30\uc900\uba74\uc774 \ub04a\uae40 \uc5c6\uc774 \uc774\uc5b4\uc838 \uc788\ub098\uc694?<\/li>\n\n\n\n<li>\ubd84\ud560\ub41c \uba74, \uc2ac\ub86f \ub610\ub294 \ub113\uc740 \uacf5\ubc31\uc744 \uac00\ub85c\uc9c0\ub974\ub294 \ud2b8\ub808\uc774\uc2a4\uac00 \uc788\ub098\uc694?<\/li>\n\n\n\n<li>\uace0\uc804\ub958 \ubc0f \uc2a4\uc704\uce6d \uc804\ub958\uc758 \uadc0\ud658 \ub8e8\ud504\uac00 \uc9e7\uace0 \u043a\u043e\u043c\u043f\u0430\u043a\u0442\ud55c\uac00\uc694?<\/li>\n\n\n\n<li>\ubbfc\uac10\ud55c \uc544\ub0a0\ub85c\uadf8 \uadc0\ud658 \uacbd\ub85c\uac00 \ub178\uc774\uc988\uac00 \ud070 \uc804\ub958 \uacbd\ub85c\ub85c\ubd80\ud130 \ubcf4\ud638\ub418\uc5b4 \uc788\ub098\uc694?<\/li>\n\n\n\n<li>AGND\uc640 DGND\uc758 \uc5f0\uacb0 \ubc29\uc2dd\uc774 \ubd80\ud488 \ub370\uc774\ud130\uc2dc\ud2b8\uc758 \uc9c0\uce68\uc744 \ub530\ub974\ub098\uc694?<\/li>\n\n\n\n<li>\ub514\ucee4\ud50c\ub9c1 \ucee4\ud328\uc2dc\ud130\uac00 \uc62c\ubc14\ub978 \ud540 \uac00\uae4c\uc774\uc5d0 \uc788\uace0, \ube44\uc544 \uc5f0\uacb0\uc774 \uc9e7\uc740\uac00\uc694?<\/li>\n\n\n\n<li>\ud544\uc694\ud55c \uacf3\uc5d0 \uce35\uac04 \uc804\ud658 \uadc0\ud658 \uacbd\ub85c\uac00 \ub9c8\ub828\ub418\uc5b4 \uc788\ub098\uc694?<\/li>\n\n\n\n<li>\ucee4\ub125\ud130, \uc2e4\ub4dc \ubc0f \uad6c\ub9ac \uba74 \uacbd\uacc4\uc5d0 \uc811\uc9c0 \ube44\uc544\uac00 \ucda9\ubd84\ud55c\uac00\uc694?<\/li>\n\n\n\n<li>\uc811\uc9c0 \ud2b8\ub808\uc774\uc2a4, \uba74 \ubc0f \ube44\uc544\uc758 \ud06c\uae30\uac00 \uc804\ub958\uc640 \uc628\ub3c4 \uc0c1\uc2b9 \uc870\uac74\uc5d0 \uc801\ud569\ud55c\uac00\uc694?<\/li>\n\n\n\n<li>\uc100\uc2dc, \uc2e4\ub4dc \ubc0f \ubcf4\ud638 \uc811\uc9c0 \uc5f0\uacb0\uc774 \uba85\ud655\ud558\uac8c \uc815\uc758\ub418\uc5b4 \uc788\ub098\uc694?<\/li>\n\n\n\n<li>\uc808\uc5f0 \uac70\ub9ac\uc640 \uc548\uc804 \uc694\uad6c \uc0ac\ud56d\uc744 \uac80\ud1a0\ud588\ub098\uc694?<\/li>\n\n\n\n<li>\uc8fc\uc694 \uc811\uc9c0 \uc601\uc5ed\uacfc \uc804\uc6d0 \ub808\uc77c\uc744 \uce21\uc815\ud560 \ud14c\uc2a4\ud2b8 \ud3ec\uc778\ud2b8\uac00 \ub9c8\ub828\ub418\uc5b4 \uc788\ub098\uc694?<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc81c\uc791\uc744 \uc704\ud574 \ucd5c\uc885 \uc801\uce35 \uad6c\uc870, \uad6c\ub9ac \uc911\ub7c9, \uc784\ud53c\ub358\uc2a4 \uc81c\uc5b4 \uc694\uad6c \uc0ac\ud56d, \uc608\uc0c1 \uc804\ub958 \ubc0f \uad00\ub828 \uc548\uc804 \ub610\ub294 \uc808\uc5f0 \uc8fc\uc758 \uc0ac\ud56d\uc744 \uc81c\uacf5\ud558\uc138\uc694. \uc81c\uc870 \ub370\uc774\ud130\ub294 \uc124\uacc4\ud55c \uad6c\ub9ac \ud328\ud134\uc744 \uadf8\ub300\ub85c \uc7ac\ud604\ud560 \uc218 \uc788\uc9c0\ub9cc, \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \uac80\ud1a0 \uc5c6\uc774 \uc815\uc758\ub418\uc9c0 \uc54a\uc740 \uc811\uc9c0 \uad6c\uc870\ub97c \ubc14\ub85c\uc7a1\uc744 \uc218\ub294 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">GND \uad00\ub828 \uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">GND\uc758 \ud480\ub124\uc784\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">GND\ub294 \uc811\uc9c0\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc804\uc790\uacf5\ud559\uc5d0\uc11c GND\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ud68c\ub85c\uc758 \uae30\uc900 \ub178\ub4dc\uc774\uc790 \uacf5\ud1b5 \uc804\ub958 \uadc0\ud658\ub9dd\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\ub294 0V\uc640 \uac19\uc740\uac00\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ud68c\ub85c\ub97c \ubd84\uc11d\ud558\uace0 \uce21\uc815\ud560 \ub54c GND\uc5d0\ub294 \ubcf4\ud1b5 \uba85\ubaa9\uc0c1 0V\uac00 \uc9c0\uc815\ub429\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc2e4\uc81c \uc811\uc9c0 \ub3c4\uccb4\uc5d0\ub294 \uc784\ud53c\ub358\uc2a4\uac00 \uc788\uc73c\ubbc0\ub85c \ubd80\ud558\uac00 \uac78\ub9ac\uac70\ub098 \ube60\ub978 \uacfc\ub3c4 \ud604\uc0c1\uc774 \ubc1c\uc0dd\ud558\uba74 GND \ub124\ud2b8\uc6cc\ud06c\uc758 \uc11c\ub85c \ub2e4\ub978 \uc9c0\uc810 \uc0ac\uc774\uc5d0 \uc791\uc740 \uc804\uc555 \ucc28\uc774\uac00 \uc0dd\uae38 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GND\ub294 \uc74c\uadf9 \ub2e8\uc790\uc640 \uac19\uc740\uac00\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uacbd\uc6b0\uc5d0 \ub530\ub77c \ub2e4\ub974\uc9c0\ub9cc \ud56d\uc0c1 \uadf8\ub7f0 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4. \ub9ce\uc740 \ub2e8\uc77c \uc804\uc6d0 \ud68c\ub85c\uc5d0\uc11c\ub294 \uc804\uc6d0 \uc74c\uadf9\uc744 GND\ub85c \uc9c0\uc815\ud569\ub2c8\ub2e4. \uc591\uc804\uc6d0 \ud68c\ub85c\uc5d0\uc11c\ub294 \uc911\uac04\uc810\uc744 GND\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc73c\uba70, \uc591\uadf9 \uc811\uc9c0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 GND\ub97c \uc591\uadf9 \ub2e8\uc790\uc5d0 \uc5f0\uacb0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc804\ub958\uac00 GND\ub97c \ud1b5\ud574 \ud750\ub974\ub098\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub124. \ud68c\ub85c \uc811\uc9c0\uc5d0\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uadc0\ud658 \uc804\ub958\uac00 \ud750\ub985\ub2c8\ub2e4. \ubcf4\ud638 \uc811\uc9c0\ub294 \uc774\uc640 \ub2e4\ub985\ub2c8\ub2e4. \uc815\uc0c1 \uc791\ub3d9 \uc870\uac74\uc5d0\uc11c\ub294 \uc77c\ubc18 \ubd80\ud558 \uc804\ub958\uac00 \ud758\ub7ec\uc11c\ub294 \uc548 \ub418\uc9c0\ub9cc, \uc18c\ub7c9\uc758 \ub204\uc124 \uc804\ub958\uac00 \uc788\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc811\uc9c0 \uc5c6\uc774 \ud68c\ub85c\uac00 \uc791\ub3d9\ud560 \uc218 \uc788\ub098\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub124. \ubc30\ud130\ub9ac \uad6c\ub3d9 \ud68c\ub85c\uc640 \uc808\uc5f0 \ud68c\ub85c\ub294 \uc811\uc9c0\ub418\uc9c0 \uc54a\uc740 \ub85c\uceec GND\ub97c \uc0ac\uc6a9\ud574 \uc791\ub3d9\ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4. \uadf8\ub798\ub3c4 \uc804\ub958\uac00 \ud750\ub974\ub294 \ud3d0\ud68c\ub85c\uc640 \uc815\uc758\ub41c \ub0b4\ubd80 \uc804\uc555 \uae30\uc900\uc740 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">IC\uc5d0 GND \ud540\uc774 \uc5ec\ub7ec \uac1c \uc788\ub294 \uc774\uc720\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ud540\uc744 \uc5ec\ub7ec \uac1c \ub450\uba74 \uc5f0\uacb0 \uc800\ud56d\uacfc \uc778\ub355\ud134\uc2a4\ub97c \uc904\uc774\uace0, \uc804\ub958\ub97c \ucc98\ub9ac\ud558\uba70, \uc5f4 \uc131\ub2a5\uc744 \ub192\uc774\uac70\ub098 \ubbfc\uac10\ud55c \ub0b4\ubd80 \uae30\ub2a5\uc744 \ubd84\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud544\uc694\ud55c \ubaa8\ub4e0 \uc811\uc9c0 \ud540\uc740 \uc81c\uc870\uc5c5\uccb4\uc758 \ub370\uc774\ud130\uc2dc\ud2b8\uc640 \uad8c\uc7a5 \ub808\uc774\uc544\uc6c3\uc5d0 \ub530\ub77c \uc5f0\uacb0\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc544\ub0a0\ub85c\uadf8 \uc811\uc9c0\uc640 \ub514\uc9c0\ud138 \uc811\uc9c0\ub97c \ubd84\ub9ac\ud574\uc57c \ud558\ub098\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ubc18\ub4dc\uc2dc \uadf8\ub7f0 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4. \uc784\uc758\ub85c \uc811\uc9c0\uba74\uc744 \ubd84\ud560\ud558\ub294 \uac83\ubcf4\ub2e4 \ubd80\ud488 \ubc30\uce58\ub97c \ubd84\ub9ac\ud558\uace0 \uc804\ub958 \uacbd\ub85c\ub97c \uc81c\uc5b4\ud558\ub294 \uac83\uc774 \ub300\uccb4\ub85c \ub354 \uc911\uc694\ud569\ub2c8\ub2e4. \ud63c\ud569 \uc2e0\ud638 IC \uc911 \uc0c1\ub2f9\uc218\ub294 \uc784\ud53c\ub358\uc2a4\uac00 \ub0ae\uc740 \uacf5\ud1b5 \uc811\uc9c0\uba74\uc744 \uc0ac\uc6a9\ud560 \ub54c \uac00\uc7a5 \uc798 \uc791\ub3d9\ud558\uc9c0\ub9cc, \ud2b9\uc815 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c\ub294 \uc811\uc9c0 \ubd84\ud560\uc774\ub098 \ub2e8\uc77c \uc9c0\uc810 \uc5f0\uacb0\uc774 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub370\uc774\ud130\uc2dc\ud2b8\ub97c \ub530\ub974\uace0 \uadc0\ud658 \uc804\ub958 \uacbd\ub85c\ub97c \ubd84\uc11d\ud558\uc138\uc694.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Arduino \ubc0f \uae30\ud0c0 \uac1c\ubc1c \ubcf4\ub4dc\uc5d0\uc11c GND\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ubcf4\ub4dc\uc758 \uacf5\ud1b5 0V \uae30\uc900\uc774\uc790 \uc804\uc6d0 \uadc0\ud658 \uc5f0\uacb0\ubd80\ub85c, \ubcf4\ud1b5 \ubcf4\ub4dc\uc758 DC \uc804\uc6d0 \uc74c\uadf9\uc5d0 \uc5f0\uacb0\ub429\ub2c8\ub2e4. \uc678\ubd80 \ubaa8\ub4c8\uc744 \uc5f0\uacb0\ud560 \ub54c\ub294 \uc778\ud130\ud398\uc774\uc2a4\uac00 \uc758\ub3c4\uc801\uc73c\ub85c \uc808\uc5f0\ub418\uc5b4 \uc788\uac70\ub098 \uc644\uc804 \ucc28\ub3d9 \ubc29\uc2dd\uc774 \uc544\ub2cc \ud55c \ubaa8\ub4c8\uc758 \uc811\uc9c0\ub3c4 \ubcf4\ub4dc \uc811\uc9c0\uc5d0 \uc5f0\uacb0\ud574\uc57c \ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">VCC\uc640 GND\uc758 \ucc28\uc774\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">VCC\ub294 \uc804\uc6d0 \ub808\uc77c\uc774\uace0, GND\ub294 \uae30\uc900 \ub178\ub4dc\uc774\uc790 \uadc0\ud658 \ub178\ub4dc\uc785\ub2c8\ub2e4. 5V \ud68c\ub85c\uc5d0\uc11c VCC\ub294 GND\ub97c \uae30\uc900\uc73c\ub85c 5V\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub450 \uc774\ub984\uc740 \uc11c\ub85c \ub2e4\ub978 \uc5ed\ud560\uc744 \ub098\ud0c0\ub0b4\uba70, \uc804\ub958\ub294 \uc804\uc6d0 \uce21\uacfc \uadc0\ud658 \uce21\uc744 \ubaa8\ub450 \uac70\uccd0\uc57c \ud750\ub985\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc811\uc9c0 \ub8e8\ud504\ub294 \ubb34\uc5c7 \ub54c\ubb38\uc5d0 \uc0dd\uae30\ub098\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub450 \uc9c0\uc810\uc774 \ub458 \uc774\uc0c1\uc758 \ub3c4\uc804 \uacbd\ub85c\ub85c \uc5f0\uacb0\ub418\uba74 \uc811\uc9c0 \ub8e8\ud504\uac00 \ud615\uc131\ub418\uc5b4 \uc6d0\uce58 \uc54a\ub294 \uc804\ub958\uac00 \uc21c\ud658\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub54c \ubc1c\uc0dd\ud558\ub294 \uc804\uc555 \uac15\ud558\ub85c \uc778\ud574 \ud5d8 \ub178\uc774\uc988, \uce21\uc815 \uc624\ucc28 \ub610\ub294 \uc804\uc790\uae30 \uac04\uc12d(EMI)\uc774 \uc0dd\uae38 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud574\uacb0 \ubc29\ubc95\uc73c\ub85c\ub294 \uc811\uc18d\uc744 \uc801\uc808\ud788 \uc81c\uc5b4\ud558\uac70\ub098 \ucc28\ub3d9 \uc2e0\ud638\ub97c \uc0ac\uc6a9\ud558\uace0, \uc808\uc5f0\uc744 \uc801\uc6a9\ud558\uac70\ub098 \ucf00\uc774\ube14 \ubc0f \uc2e4\ub4dc \uc5f0\uacb0\uc744 \ubcc0\uacbd\ud558\ub294 \ubc29\ubc95\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uacb0\ub860<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GND\ub294 \ud68c\ub85c\ub3c4 \ud558\ub2e8\uc758 \uae30\ud638 \uadf8 \uc774\uc0c1\uc785\ub2c8\ub2e4. \ud68c\ub85c \uc804\uc555\uc5d0 \uc758\ubbf8\ub97c \ubd80\uc5ec\ud558\ub294 \uae30\uc900\uc810\uc774\uc790, \ud754\ud788 \uc804\ub958\uac00 \uc804\uc6d0\uc73c\ub85c \ub418\ub3cc\uc544\uac00\ub294 \uacbd\ub85c\uc774\uae30\ub3c4 \ud569\ub2c8\ub2e4. \uc811\uc9c0(GND)\ub294 \ub300\uc9c0, \uc100\uc2dc, \uc804\uc6d0 \uc74c\uadf9 \ub610\ub294 \ub2e4\ub978 \uae30\uc900\uc810\uc5d0 \uc5f0\uacb0\ub420 \uc218 \uc788\uc9c0\ub9cc, \uc124\uacc4\ub97c \ud655\uc778\ud558\uc9c0 \uc54a\uc740 \ucc44 \uc774\ub4e4 \uc0ac\uc774\uc758 \uad00\uacc4\ub97c \ub2e8\uc815\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc548\uc815\uc801\uc778 PCB \uc131\ub2a5\uc744 \uc704\ud574\uc11c\ub294 \ubb3c\ub9ac\uc801\uc778 \uadc0\ud658 \uacbd\ub85c\uc5d0 \uc8fc\uc758\ub97c \uae30\uc6b8\uc774\uc138\uc694. \ub8e8\ud504\ub97c \uc9e7\uac8c \uc720\uc9c0\ud558\uace0, \uc5f0\uc18d\uc801\uc778 \uae30\uc900\uba74\uc744 \ud655\ubcf4\ud558\uba70, \ubd80\ud488 \ubc30\uce58\ub97c \ud1b5\ud574 \ub178\uc774\uc988\uac00 \ud070 \uc804\ub958 \uacbd\ub85c\uc640 \ubbfc\uac10\ud55c \uc804\ub958 \uacbd\ub85c\ub97c \ubd84\ub9ac\ud558\uace0, \ub514\ucee4\ud50c\ub9c1 \ubd80\ud488\uc744 \ub0ae\uc740 \uc778\ub355\ud134\uc2a4\ub85c \uc5f0\uacb0\ud558\uba70, \ud63c\ud569 \uc2e0\ud638 \uc811\uc9c0\uc5d0 \uad00\ud55c \uac01 \uc18c\uc790\uc758 \uc9c0\uce68\uc744 \ub530\ub974\uc138\uc694.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubcf4\ub4dc \uc591\uc0b0\uc744 \uc900\ube44 \uc911\uc774\ub77c\uba74 \uc81c\uc870\uc131 \uac80\ud1a0\uc640 PCB \uacac\uc801\uc744 \uc704\ud574 \uac70\ubc84 \ud30c\uc77c, \ub4dc\ub9b4 \ub370\uc774\ud130, \uc801\uce35 \uad6c\uc870, \uad6c\ub9ac \uc694\uad6c \uc0ac\ud56d \ubc0f \uad00\ub828 \uc804\uae30 \uc0ac\uc591\uc744 LEADHUI PCB\uc5d0 \ubcf4\ub0b4 \uc8fc\uc138\uc694.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uae30\uc220 \ucc38\uace0 \uc790\ub8cc<\/h2>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\ub0b4\uc1fc\ub0a0\uc778\uc2a4\ud2b8\ub8e8\uba3c\ud2b8, <a href=\"https:\/\/www.ni.com\/en\/support\/documentation\/supplemental\/18\/chassis--earth-and-signal-grounding--terminology-and-symbols.html\">\uc100\uc2dc, \ub300\uc9c0 \ubc0f \uc2e0\ud638 \uc811\uc9c0: \uc6a9\uc5b4\uc640 \uae30\ud638<\/a><\/li>\n\n\n\n<li>\ud14d\uc0ac\uc2a4 \uc778\uc2a4\ud2b8\ub8e8\uba3c\ud2b8, <a href=\"https:\/\/www.ti.com\/lit\/pdf\/SLYT499\">\ud63c\ud569 \uc2e0\ud638 \uc2dc\uc2a4\ud15c\uc758 \uc811\uc9c0 \uc774\ud574\ud558\uae30, 1\ubd80<\/a><\/li>\n\n\n\n<li>\ud14d\uc0ac\uc2a4 \uc778\uc2a4\ud2b8\ub8e8\uba3c\ud2b8, <a href=\"https:\/\/www.ti.com\/lit\/pdf\/SLYT512\">\ud63c\ud569 \uc2e0\ud638 \uc2dc\uc2a4\ud15c\uc758 \uc811\uc9c0 \uc774\ud574\ud558\uae30, 2\ubd80<\/a><\/li>\n\n\n\n<li>\uc544\ub098\ub85c\uadf8\ub514\ubc14\uc774\uc2a4, <a href=\"https:\/\/www.analog.com\/mt-031\">MT-031: \ub370\uc774\ud130 \ucee8\ubc84\ud130 \uc811\uc9c0 \ubc0f AGND\uc640 DGND\uc758 \ubbf8\uc2a4\ud130\ub9ac \ud574\uacb0<\/a><\/li>\n\n\n\n<li>\uc544\ub098\ub85c\uadf8\ub514\ubc14\uc774\uc2a4, <a href=\"https:\/\/www.analog.com\/MT-101\">MT-101: \ub514\ucee4\ud50c\ub9c1 \uae30\ubc95<\/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 [&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\/ko\/wp-json\/wp\/v2\/posts\/11922","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lead-pcb.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lead-pcb.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/ko\/wp-json\/wp\/v2\/comments?post=11922"}],"version-history":[{"count":0,"href":"https:\/\/lead-pcb.com\/ko\/wp-json\/wp\/v2\/posts\/11922\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/ko\/wp-json\/wp\/v2\/media\/23572"}],"wp:attachment":[{"href":"https:\/\/lead-pcb.com\/ko\/wp-json\/wp\/v2\/media?parent=11922"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lead-pcb.com\/ko\/wp-json\/wp\/v2\/categories?post=11922"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lead-pcb.com\/ko\/wp-json\/wp\/v2\/tags?post=11922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}