{"id":3075,"date":"2020-05-18T07:29:01","date_gmt":"2020-05-18T07:29:01","guid":{"rendered":""},"modified":"2020-05-18T15:29:21","modified_gmt":"2020-05-18T07:29:21","slug":"pcb%e5%b8%83%e5%b1%80%e5%af%b9%e7%94%b5%e7%a3%81%e5%85%bc%e5%ae%b9emc%e6%80%a7%e8%83%bd%e7%9a%84%e5%bd%b1%e5%93%8d","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=3075","title":{"rendered":"PCB\u5e03\u5c40\u5bf9\u7535\u78c1\u517c\u5bb9EMC\u6027\u80fd\u7684\u5f71\u54cd"},"content":{"rendered":"

\n\t\u3000\u3000\u5728PCB<\/u>\u4e2d\u63a5\u5730<\/p>\n

\n\t\u3000\u30001\u3001\u516c\u5171\u4ee3\u7801\u5e72\u6270\u5bf9PCB\u5185\u90e8\u4fe1\u53f7\u7684\u5f71\u54cd<\/p>\n

\n\t <\/div>\n

\n\t\u3000\u3000\u5370\u5237\u7535\u8def\u677f<\/u>\uff08PCB\uff09\u5185\u90e8\u5370\u5237\u7ebf\u5177\u6709\u76f8\u5bf9\u4e8e\u53c2\u8003\u63a5\u5730\u677f\u7684\u5bc4\u751f\u53c2\u6570\uff0c\u5f53\u529f\u80fd\u4fe1\u53f7\u5728PCB\u5185\u4f20\u8f93\u65f6\uff0c\u7535\u8def<\/u>\u4e2d\u540c\u4e00\u7f51\u7edc\u4e2d\u7684\u540c\u4e00\u7b49\u7535\u4f4d\u8282\u70b9\u4e0d\u518d\u5177\u6709\u7b49\u7535\u4f4d\u3002PCB\u5185\u90e8\u7684\u7535\u6d41<\/u>i\u4ece\u6e90\u7aef\u5f00\u59cb\uff0c\u901a\u8fc7\u4e00\u7cfb\u5217\u8f7d\u6d41\u5b50\u8fd4\u56de\u4fe1\u53f7\u6e90\uff0c\u5f62\u6210\u4fe1\u53f7\u3002\u66f4\u91cd\u8981\u7684\u662f\uff0c\u6211\u503e\u5411\u4e8e\u6cbf\u7740\u5177\u6709\u4f4e\u963b\u6297<\/u>\u7684\u8def\u5f84\u6d41\u52a8\uff0c\u56e0\u6b64\u6211\u901a\u5e38\u4fdd\u6301\u4e0d\u53d8\u7684\u963b\u6297\u7a33\u5b9a\u6027\u3002<\/p>\n

\n\t\u3000\u3000\u56fe1\u663e\u793a\u4e86\u5171\u6a21\u5e72\u6270\u8f6c\u6362\u4e3aPCB\u5185\u5dee\u6a21\u5e72\u6270\u7684\u8fc7\u7a0b\uff0c \u6307PCB\u6d41\u5185\u7684\u5dee\u6a21\u7535\u6d41\u800c\u6211COM\u662f\u6307\u5171\u6a21\u7535\u6d41\uff0c\u8981\u4e48\u4ece\u5916\u90e8PCB\u5f00\u59cb\uff0c\u5e76\u901a\u8fc7\u53c2\u8003\u63a5\u5730\u677f\u6d41\u5165PCB\u6216PCB\uff0c\u5e76\u8fd4\u56de\u5230PCB\u7684\u5185\u90e8\u7684\u5185\u90e8\u901a\u8fc7\u53c2\u8003\u5730\u5f00\u59cb\u677f\u3002\u9ad8\u9891\u6211COM\u6709\u4e24\u6761\u8def\u5f84\uff1a\u662f\u4ece\u70b9\u7532\u5230\u70b9\u4e59\u5185PCB\u4eceGND\u5f00\u59cb; \u7b2c\u4e8c\u4e2a\u662f\u4ece\u7aef\u53e3S 1\u5f00\u59cb\u4eceA\u70b9\u5230B\u70b9\u5230PCB\u5185\u7531\u7535\u5bb9<\/u>C.\u63a5\u5730\u963b\u6297\u017d AB\u5bfc\u81f4Δ\u7684\u4ea7\u751fü AB\uff0c\u6240\u4ee5\u5f53\u6b63\u5e38\u4fe1\u53f7\u88ab\u4f20\u9012\u5230IC 2\uff0c\u53d8\u5f62\u5c06\u53d1\u751f\u7684\u4fe1\u53f7\u548c\u5171\u6a21\u5e72\u6270\u88ab\u8f6c\u5316\u6210\u5dee\u6a21\u5e72\u6270\uff0c\u4ece\u800c\u4ea7\u751f\u5f71\u54cd\u57fa\u4e8e\u4ea6\u5373\u5f0f\u6b63\u5e38\u4fe1\u53f7Ù 2 = û 1 -Δ ü AB\u3002<\/p>\n

\n\t
\n\t\u3000\"PCB\u5e03\u5c40\u5bf9\u7535\u78c1\u517c\u5bb9EMC\u6027\u80fd\u7684\u5f71\u54cd\"<\/p>\n

\n\t\u3000\u3000\u56e0\u6b64\uff0c\u53ea\u8981\u6211COM\u8fdb\u5165PCB\u7684\u5185\u90e8\u901a\u8fc7I \/ O\u7aef\u53e3\u6216\u7a7a\u95f4\u8f90\u5c04\uff0c\u5dee\u6a21\u6ee4\u6ce2\u5668<\/u>\u7535\u5bb9\u5728PCB\u7684\u4fe1\u53f7\u7ebf<\/u>\u53ea\u80fd\u6309\u5e72\u6270\u65c1\u8def\u5230GND\u3002\u8be5\u7ed3\u679c\u7684\u5148\u51b3\u6761\u4ef6\u662fGND\u88ab\u8ba4\u4e3a\u662f\u4fe1\u53f7\u56de\u6d41\u7684\u4f4e\u963b\u6297\uff0c\u5e76\u4e14\u7535\u6d41\u603b\u662f\u671d\u5411\u4f4e\u963b\u6297\u65b9\u5411\u6d41\u52a8\u3002<\/p>\n

\n\t\u3000\u30002\u3001\u7535\u78c1\u517c\u5bb9EMC<\/u>\u8bbe\u8ba1\u5b9e\u65bd\u7684\u5173\u952e\uff1aPCB\u4e2d\u7684\u63a5\u5730\u963b\u6297<\/p>\n

\n\t\u3000\u3000\u7531\u9ad8\u9891\u4fe1\u53f7\u4ea7\u751fEMC\u7684\u539f\u56e0\u5728\u4e8e\u4fe1\u53f7\u53c2\u8003\u7535\u5e73GND\u4e0d\u80fd\u4fdd\u6301\u5176\u4f4e\u963b\u6297\u7279\u6027\u3002\u968f\u7740\u53c2\u8003\u7535\u5e73\u963b\u6297Z GND\u7684\u589e\u52a0\uff0c\u4fe1\u53f7\u4f20\u8f93\u8d28\u91cf\u4e5f\u4f1a\u964d\u4f4e\u3002\u4e3a\u4e86\u89e3\u51b3\u9ad8\u9891\u5e72\u6270\u7684\u95ee\u9898\uff0c\u5728EMC\u8bbe\u8ba1\u4e2d\u4f7f\u7528\u4e86\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u4f8b\u5982\u4e0e“\u63a5\u5730”\u7d27\u5bc6\u8fde\u63a5\u7684\u6ee4\u6ce2\u5668\uff0c\u63a5\u5730\u548c\u5c4f\u853d\u3002<\/p>\n

\n\t\u3000\u3000\u6ee4\u6ce2\u5668\u53ef\u89c6\u4e3a\u5bf9\u5730\u7535\u5bb9\uff0c\u6709\u4e24\u79cd\u7ed3\u6784\uff0c\u4e00\u79cd\u662f\u5c06X\u7535\u5bb9\u8fde\u63a5\u5230\u4fe1\u53f7\u53c2\u8003\u5730\uff0c\u53e6\u4e00\u79cd\u662f\u901a\u8fc7Y\u7535\u5bb9\u6216PCB\u5185\u90e8\u7684\u4e0d\u540c\u63a5\u5730\u8fde\u63a5\u4f7f\u4fe1\u53f7\u8fde\u63a5\u5230\u91d1\u5c5e\u58f3\u3002\u5c4f\u853d\u53ef\u4ee5\u89c6\u4e3aPCB\u5730\u9762\u5411\u592a\u7a7a\u6269\u5c55\u7684\u7ed3\u679c\u3002\u6ee4\u6ce2\u5668\u6216\u5c4f\u853d\u7684\u76ee\u7684\u662f\u4f7f\u9ad8\u9891\u5171\u6a21\u5e72\u6270\u901a\u8fc7\u4f4e\u963b\u6297\u65c1\u8def\uff0c\u4ee5\u907f\u514d\u6d41\u5165\u6b63\u5e38\u5de5\u4f5c\u4fe1\u53f7\u3002\u540c\u6837\uff0c\u9664\u975e\u5730\u9762\u5177\u6709\u4f4e\u963b\u6297\uff0c\u5426\u5219\u6240\u6709\u8fd9\u4e9b\u65b9\u6cd5\u90fd\u4e0d\u8d77\u4f5c\u7528<\/p>\n

\n\t\u3000\u3000\u6211COM\u6839\u636eIC\u7684\u987a\u5e8f\u6d411 →IC 2 →IC 1\uff0c\u5e76\u4e14\u5f53\u5b83\u6d41\u81f3\u70b9P\uff0c\u6211COM\u5c06\u6d41\u5165IC\u7684\u5206\u652f\u7535\u8def1 \u548cc ^ 1 \uff0c\u901a\u8fc7\u5b83\u4ece\u70b9\u6d41\u5230\u7532\u5230\u4e59\u3002\u5982\u679cA\u70b9\u548cB\u70b9\u4e4b\u95f4\u7684\u963b\u6297\uff0c\u5373Z AB\uff0c\u8fdc\u5c0f\u4e8e\u70b9P\u548cIC 1\u4e4b\u95f4\u7684\u963b\u6297\u3002\u5728\u8fd9\u4e00\u523b\uff0c\u6211COM\u4ece\u70b9P\u6d41\u5411A\uff0c\u53ef\u4ee5\u5b9e\u73b0IC 1\u6ee4\u6ce2\u5668\u3002\u5f53i com\u6d41\u5411B\u70b9\u65f6\uff0c\u5c06\u51fa\u73b0B → C\u548cB → Q\u7684\u5206\u652f\u7535\u8def\u3002\u5982\u679cPCB\u5e03\u5c40\u6ca1\u6709\u5f97\u5230\u5f88\u597d\u7684\u63a7\u5236\uff0c\u70b9\u4e4b\u95f4\u7684\u963b\u6297\u4e59\u548cÇ\uff0c\u5373\u017e BC\uff0c\u017e BC \u300b\u300b \u017d C2 + \u017e Q\u3002Z Q\u6307\u7684\u662f\u70b9Q\u548cIC 2\u4e4b\u95f4\u7684\u963b\u6297\u3002\u4e00\u4e16\u5f53\u6700\u521d\u4ec5\u7528\u4e8eIC 2\u7684\u7535\u5bb9\u5728\u4fe1\u53f7\u5165\u4fb5\u5e72\u6270\u4e2d\u8d77\u4f5c\u7528\u65f6\uff0ccom\u901a\u8fc7C 2\u5411\u540e\u6d41\u56deIC 2\u8f93\u5165\u7aef\u53e3\u3002\u3000<\/p>\n

\n\t\u3000\"PCB\u5e03\u5c40\u5bf9\u7535\u78c1\u517c\u5bb9EMC\u6027\u80fd\u7684\u5f71\u54cd\"<\/p>\n

\n\t\u3000\u3000\u4e3a\u4e86\u4f7f\u53c2\u8003\u7535\u5e73\u5177\u6709\u4f4e\u963b\u6297\uff0c\u901a\u5e38\u5c06\u5176\u8bbe\u8ba1\u4e3a\u8868\u9762\uff0c\u4e00\u822c\u800c\u8a00\uff0c\u957f\u5bbd\u6bd4\u5c0f\u4e8e5\u7684\u5bfc\u4f53\u5728\u5de5\u7a0b\u9886\u57df\u53ef\u89c6\u4e3a\u4f4e\u963b\u6297\uff0c\u5370\u5237\u7ebf\u7684\u963b\u6297\u4e0d\u662f\u7531\u5176\u957f\u5ea6\u6216\u539a\u5ea6\u51b3\u5b9a\u7684\u3002\u5728\u4f20\u7edf\u7684PCB\u8bbe\u8ba1\u539f\u5219\u4e2d\uff0c\u5927\u91cf\u63a8\u8350\u6a21\u62df\u7535\u8def\u5355\u70b9\u63a5\u5730\uff0c\u56e0\u6b64\u6570\u5b57\u7535\u8def<\/u>\u591a\u70b9\u63a5\u5730\u548c\u6570\u5b57\u6a21\u5757\u7535\u8def\u6df7\u5408\u63a5\u5730\u7684PCB\u5e03\u5c40\u539f\u5219\u4e0d\u518d\u9002\u7528\u4e8e\u5904\u7406EMC\u95ee\u9898\u3002<\/p>\n

\n\t\u3000\u3000\u7531\u4e8e\u5fc5\u987b\u786e\u4fdd\u6240\u6709\u4fe1\u53f7\u7684\u6240\u6709\u56de\u6d41\u90fd\u5177\u6709\u4f4e\u963b\u6297\u7684\u96c6\u6210\u63a5\u5730\uff0c\u56e0\u6b64\u5177\u6709\u96c6\u6210\u63a5\u5730\u5c42\u76844\u5c42\u6216\u591a\u5c42\u677f\u80fd\u591f\u6ee1\u8db3\u8981\u6c42\uff0c\u800c\u4f4e\u6210\u672c\u5355\u677f\u5219\u4e0d\u80fd\u6ee1\u8db3\u8981\u6c42\uff0c\u5f53\u5fc5\u987b\u6839\u636e\u6210\u672c\u9650\u5236\u4f7f\u7528\u53cc\u5c42\u7535\u8def\u677f\u65f6\uff0c\u5e94\u4e3aPCB\u5185\u90e8\u7684\u4fe1\u53f7\u8bbe\u8ba1\u76f8\u5bf9\u96c6\u6210\u7684\u63a5\u5730\u5c42\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0cPCB\u63a5\u5730\u963b\u6297\u53d7\u5176\u5f62\u72b6\u548c\u4fe1\u53f7\u7ebf\u901a\u5b54\uff0c\u88c2\u7f1d\u548c\u5f00\u69fd\u7684\u5f71\u54cd\u3002\u56fe3a\u548c3b\u5206\u522b\u663e\u793a\u4e86\u4e0d\u826f\u548c\u4f18\u79c0\u7684\u4f4e\u963b\u6297\u63a5\u5730\u5e73\u9762\u8bbe\u8ba1\u3002<\/p>\n

\n\t\u3000\u3000\"PCB\u5e03\u5c40\u5bf9\u7535\u78c1\u517c\u5bb9EMC\u6027\u80fd\u7684\u5f71\u54cd\"<\/p>\n

\n\t\u3000\u3000\u5f00\u69fdPCB\u5bf9\u5730\u963b\u6297\u7684\u5f71\u54cd<\/p>\n

\n\t\u3000\u3000\u5728\u8be5\u56fe\u4e2d\uff0c\u6240\u6709\u7ec4\u4ef6\u90fd\u4f4d\u4e8ePCB\u7684\u6b63\u9762\uff0c\u800c\u63a5\u5730\u5e73\u9762\u4f4d\u4e8ePCB\u7684\u6b63\u9762\uff0c\u82af\u7247\u901a\u8fc7\u6b63\u9762\u7684\u5370\u5237\u7ebfab\u8fde\u63a5\uff0ccd\u662f\u80cc\u9762\u7684\u5370\u5237\u7ebf\u3002\u5728\u5916\u90e8\u9ad8\u9891\u5171\u6a21\u5e72\u6270\u7684\u538b\u529b\u4e0b\uff0ccd\u5f62\u6210\u7684\u5f00\u69fd\u5c06\u5bfc\u81f4\u5370\u5237\u7ebf\u56de\u6d41\u7684Z GND\u589e\u52a0\u3002Z GND\u5728\u4fe1\u53f7\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u6ce2\u52a8\uff0c\u5bfc\u81f4\u4fe1\u53f7\u8d28\u91cf\u4f4e\u3002\u56e0\u6b64\uff0ccd\u4e4b\u95f4\u7684\u5370\u5237\u7ebf\u5c42\u53ef\u4ee5\u5728PCB\u5e03\u5c40\u8bbe\u8ba1\u8fc7\u7a0b\u4e2d\u901a\u8fc7\u5b54\u4e00\u904d\u53c8\u4e00\u904d\u5730\u4ea4\u6362\uff0c\u4f7f\u5f97Z GND\u4f1a\u51cf\u5c11\u3002<\/p>\n

\n\t\u3000\u3000\u6b64\u5916\uff0c\u4e24\u4e2a\u5177\u6709\u654f\u611f\u4fe1\u53f7\u7684IC S\u53ef\u4ee5\u6392\u5217\u5728\u4e00\u8d77\uff0c\u4f7fGND\u6210\u4e3a\u4e00\u4e2a\u76f8\u5bf9\u96c6\u6210\u7684\u63a5\u5730\u5e73\u9762\uff0c\u4ee5\u786e\u4fdd\u4fe1\u53f7\u5728\u4fe1\u53f7\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u53d7\u5230\u5e72\u6270\uff0c\u6ce8\u610f\u901a\u5b54\u4e0d\u80fd\u4ee5\u5f88\u5927\u7684\u5bc6\u5ea6\u6392\u5217\uff0c\u5426\u5219\u4f1a\u5f15\u8d77\u5730\u5e73\u9762\u88c2\u7eb9\uff0c\u5bfc\u81f4Z GND\u5347\u7ea7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728 PCB \u4e2d\u63a5\u5730 1\u3001\u516c\u5171\u4ee3\u7801\u5e72\u6270\u5bf9PCB\u5185\u90e8\u4fe1\u53f7\u7684\u5f71\u54cd \u5370\u5237\u7535\u8def\u677f \uff08PCB\uff09\u5185\u90e8\u5370\u5237\u7ebf\u5177\u6709\u76f8\u5bf9\u4e8e\u53c2\u8003\u63a5\u5730\u677f\u7684\u5bc4\u751f\u53c2\u6570\uff0c\u5f53\u529f\u80fd\u4fe1\u53f7\u5728PCB\u5185\u4f20\u8f93\u65f6\uff0c \u7535\u8def \u4e2d\u540c\u4e00\u7f51\u7edc\u4e2d\u7684\u540c\u4e00\u7b49\u7535\u4f4d\u8282\u70b9<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/3075"}],"collection":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3075"}],"version-history":[{"count":0,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/3075\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3075"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3075"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}