电路板如何接地？ 电路板接地
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\u5408\u7406\u7684\u7f51\u683c\u7cfb\u7edf\u6765\u652f\u6301\u5e03\u7ebf\u7684\u8fdb\u884c\u3002 \u6807\u51c6\u5143\u5668\u4ef6\u4e24\u817f\u4e4b\u95f4\u7684\u8ddd\u79bb\u4e3a0.1\u82f1\u5bf8(2.54mm),\u6240\u4ee5\u7f51\u683c\u7cfb\u7edf\u7684\u57fa\u7840\u4e00\u822c\u5c31\u5b9a\u4e3a0.1\u82f1\u5bf8
(2.54 mm)\u6216\u5c0f\u4e8e0.1\u82f1\u5bf8\u7684\u6574\u500d\u6570\uff0c\u5982\uff1a0.05\u82f1\u5bf8\u30010.025\u82f1\u5bf8\u30010.02\u82f1\u5bf8\u7b49\u3002
6\u3001\u8bbe\u8ba1\u89c4\u5219\u68c0\u67e5\uff08DRC\uff09 \u5e03\u7ebf\u8bbe\u8ba1\u5b8c\u6210\u540e\uff0c\u9700\u8ba4\u771f\u68c0\u67e5\u5e03\u7ebf\u8bbe\u8ba1\u662f\u5426\u7b26\u5408\u8bbe\u8ba1\u8005\u6240\u5236\u5b9a\u7684\u89c4\u5219\uff0c\u540c\u65f6\u4e5f\u9700\u786e\u8ba4\u6240\u5236\u5b9a\u7684\u89c4\u5219\u662f
\u5426\u7b26\u5408\u5370\u5236\u677f\u751f\u4ea7\u5de5\u827a\u7684\u9700\u6c42\uff0c\u4e00\u822c\u68c0\u67e5\u6709\u5982\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a \u7ebf\u4e0e\u7ebf\uff0c\u7ebf\u4e0e\u5143\u4ef6\u710a\u76d8\uff0c\u7ebf\u4e0e\u8d2f\u901a\u5b54\uff0c\u5143\u4ef6\u710a\u76d8\u4e0e\u8d2f\u901a\u5b54\uff0c\u8d2f\u901a\u5b54
\u4e0e\u8d2f\u901a\u5b54\u4e4b\u95f4\u7684\u8ddd\u79bb\u662f\u5426\u5408\u7406\uff0c\u662f\u5426\u6ee1\u8db3\u751f\u4ea7\u8981\u6c42\u3002 \u7535\u6e90\u7ebf\u548c\u5730\u7ebf\u7684\u5bbd\u5ea6\u662f\u5426\u5408\u9002\uff0c\u7535\u6e90\u4e0e\u5730\u7ebf\u4e4b\u95f4\u662f\u5426\u7d27\u8026\u5408\uff08\u4f4e\u7684\u6ce2\u963b\u6297
\uff09\uff1f\u5728PCB\u4e2d\u662f\u5426\u8fd8\u6709\u80fd\u8ba9\u5730\u7ebf\u52a0\u5bbd\u7684\u5730\u65b9\u3002 \u5bf9\u4e8e\u5173\u952e\u7684\u4fe1\u53f7\u7ebf\u662f\u5426\u91c7\u53d6\u4e86\u6700\u4f73\u63aa\u65bd\uff0c\u5982\u957f\u5ea6\u6700\u77ed\uff0c\u52a0\u4fdd\u62a4\u7ebf\uff0c\u8f93\u5165\u7ebf\u53ca\u8f93\u51fa\u7ebf
\u88ab\u660e\u663e\u5730\u5206\u5f00\u3002 \u6a21\u62df\u7535\u8def\u548c\u6570\u5b57\u7535\u8def\u90e8\u5206\uff0c\u662f\u5426\u6709\u5404\u81ea\u72ec\u7acb\u7684\u5730\u7ebf\u3002 \u540e\u52a0\u5728PCB\u4e2d\u7684\u56fe\u5f62\uff08\u5982\u56fe\u6807\u3001\u6ce8\u6807\uff09\u662f\u5426\u4f1a\u9020\u6210\u4fe1\u53f7\u77ed
\u8def\u3002 \u5bf9\u4e00\u4e9b\u4e0d\u7406\u60f3\u7684\u7ebf\u5f62\u8fdb\u884c\u4fee\u6539\u3002 \u5728PCB\u4e0a\u662f\u5426\u52a0\u6709\u5de5\u827a\u7ebf\uff1f\u963b\u710a\u662f\u5426\u7b26\u5408\u751f\u4ea7\u5de5\u827a\u7684\u8981\u6c42\uff0c\u963b\u710a\u5c3a\u5bf8\u662f\u5426\u5408\u9002\uff0c\u5b57\u7b26\u6807\u5fd7
\u662f\u5426\u538b\u5728\u5668\u4ef6\u710a\u76d8\u4e0a\uff0c\u4ee5\u514d\u5f71\u54cd\u7535\u88c5\u8d28\u91cf\u3002 \u591a\u5c42\u677f\u4e2d\u7684\u7535\u6e90\u5730\u5c42\u7684\u5916\u6846\u8fb9\u7f18\u662f\u5426\u7f29\u5c0f\uff0c\u5982\u7535\u6e90\u5730\u5c42\u7684\u94dc\u7b94\u9732\u51fa\u677f\u5916\u5bb9\u6613\u9020\u6210\u77ed
\u8def\u3002\u6982\u8ff0 \u672c\u6587\u6863\u7684\u76ee\u7684\u5728\u4e8e\u8bf4\u660e\u4f7f\u7528PADS\u7684\u5370\u5236\u677f\u8bbe\u8ba1\u8f6f\u4ef6PowerPCB\u8fdb\u884c\u5370\u5236\u677f\u8bbe\u8ba1\u7684\u6d41\u7a0b\u548c\u4e00\u4e9b\u6ce8\u610f\u4e8b\u9879\uff0c\u4e3a\u4e00\u4e2a\u5de5\u4f5c\u7ec4\u7684
\u8bbe\u8ba1\u4eba\u5458\u63d0\u4f9b\u8bbe\u8ba1\u89c4\u8303\uff0c\u65b9\u4fbf\u8bbe\u8ba1\u4eba\u5458\u4e4b\u95f4\u8fdb\u884c\u4ea4\u6d41\u548c\u76f8\u4e92\u68c0\u67e5\u3002
2\u3001\u8bbe\u8ba1\u6d41\u7a0b PCB\u7684\u8bbe\u8ba1\u6d41\u7a0b\u5206\u4e3a\u7f51\u8868\u8f93\u5165\u3001\u89c4\u5219\u8bbe\u7f6e\u3001\u5143\u5668\u4ef6\u5e03\u5c40\u3001\u5e03\u7ebf\u3001\u68c0\u67e5\u3001\u590d\u67e5\u3001\u8f93\u51fa\u516d\u4e2a\u6b65\u9aa4.
2.1 \u7f51\u8868\u8f93\u5165
\u7f51\u8868\u8f93\u5165\u6709\u4e24\u79cd\u65b9\u6cd5\uff0c\u4e00\u79cd\u662f\u4f7f\u7528PowerLogic\u7684OLE PowerPCB Connection\u529f\u80fd\uff0c\u9009\u62e9Send Netlist\uff0c\u5e94\u7528OLE\u529f\u80fd\uff0c\u53ef\u4ee5\u968f\u65f6\u4fdd
\u6301\u539f\u7406\u56fe\u548cPCB\u56fe\u7684\u4e00\u81f4\uff0c\u5c3d\u91cf\u51cf\u5c11\u51fa\u9519\u7684\u53ef\u80fd\u3002
\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u76f4\u63a5\u5728PowerPCB\u4e2d\u88c5\u8f7d\u7f51\u8868\uff0c\u9009\u62e9File->Import\uff0c\u5c06\u539f\u7406\u56fe\u751f\u6210\u7684\u7f51\u8868\u8f93\u5165\u8fdb\u6765\u3002
2.2 \u89c4\u5219\u8bbe\u7f6e \u5982\u679c\u5728\u539f\u7406\u56fe\u8bbe\u8ba1\u9636\u6bb5\u5c31\u5df2\u7ecf\u628aPCB\u7684\u8bbe\u8ba1\u89c4\u5219\u8bbe\u7f6e\u597d\u7684\u8bdd\uff0c\u5c31\u4e0d\u7528\u518d\u8fdb\u884c\u8bbe\u7f6e
\u8fd9\u4e9b\u89c4\u5219\u4e86\uff0c\u56e0\u4e3a\u8f93\u5165\u7f51\u8868\u65f6\uff0c\u8bbe\u8ba1\u89c4\u5219\u5df2\u968f\u7f51\u8868\u8f93\u5165\u8fdbPowerPCB\u4e86\u3002\u5982\u679c\u4fee\u6539\u4e86\u8bbe\u8ba1\u89c4\u5219\uff0c\u5fc5\u987b\u540c\u6b65\u539f\u7406\u56fe\uff0c\u4fdd\u8bc1\u539f\u7406\u56fe\u548cPCB
\u7684\u4e00\u81f4\u3002\u9664\u4e86\u8bbe\u8ba1\u89c4\u5219\u548c\u5c42\u5b9a\u4e49\u5916\uff0c\u8fd8\u6709\u4e00\u4e9b\u89c4\u5219\u9700\u8981\u8bbe\u7f6e\uff0c\u6bd4\u5982Pad Stacks\uff0c\u9700\u8981\u4fee\u6539\u6807\u51c6\u8fc7\u5b54\u7684\u5927\u5c0f\u3002\u5982\u679c\u8bbe\u8ba1\u8005\u65b0\u5efa\u4e86\u4e00\u4e2a
\u710a\u76d8\u6216\u8fc7\u5b54\uff0c\u4e00\u5b9a\u8981\u52a0\u4e0aLayer 25\u3002
\u6ce8\u610f\uff1a PCB\u8bbe\u8ba1\u89c4\u5219\u3001\u5c42\u5b9a\u4e49\u3001\u8fc7\u5b54\u8bbe\u7f6e\u3001CAM\u8f93\u51fa\u8bbe\u7f6e\u5df2\u7ecf\u4f5c\u6210\u7f3a\u7701\u542f\u52a8\u6587\u4ef6\uff0c\u540d\u79f0\u4e3aDefault.stp\uff0c\u7f51\u8868\u8f93\u5165\u8fdb\u6765\u4ee5\u540e\uff0c\u6309\u7167
\u8bbe\u8ba1\u7684\u5b9e\u9645\u60c5\u51b5\uff0c\u628a\u7535\u6e90\u7f51\u7edc\u548c\u5730\u5206\u914d\u7ed9\u7535\u6e90\u5c42\u548c\u5730\u5c42\uff0c\u5e76\u8bbe\u7f6e\u5176\u5b83\u9ad8\u7ea7\u89c4\u5219\u3002\u5728\u6240\u6709\u7684\u89c4\u5219\u90fd\u8bbe\u7f6e\u597d\u4ee5\u540e\uff0c\u5728PowerLogic\u4e2d\uff0c
\u4f7f\u7528OLE PowerPCB Connection\u7684Rules From PCB\u529f\u80fd\uff0c\u66f4\u65b0\u539f\u7406\u56fe\u4e2d\u7684\u89c4\u5219\u8bbe\u7f6e\uff0c\u4fdd\u8bc1\u539f
\u7406\u56fe\u548cPCB\u56fe\u7684\u89c4\u5219\u4e00\u81f4\u3002
2.3 \u5143\u5668\u4ef6\u5e03\u5c40 \u7f51\u8868\u8f93\u5165\u4ee5\u540e\uff0c\u6240\u6709\u7684\u5143\u5668\u4ef6\u90fd\u4f1a\u653e\u5728\u5de5\u4f5c\u533a\u7684\u96f6\u70b9\uff0c\u91cd\u53e0\u5728\u4e00\u8d77\uff0c\u4e0b\u4e00\u6b65\u7684\u5de5\u4f5c\u5c31\u662f\u628a\u8fd9\u4e9b\u5143\u5668\u4ef6\u5206\u5f00\uff0c\u6309\u7167
\u4e00\u4e9b\u89c4\u5219\u6446\u653e\u6574\u9f50\uff0c\u5373\u5143\u5668\u4ef6\u5e03\u5c40\u3002PowerPCB\u63d0\u4f9b\u4e86\u4e24\u79cd\u65b9\u6cd5\uff0c\u624b\u5de5\u5e03\u5c40\u548c\u81ea\u52a8\u5e03\u5c40\u3002
2.3.1 \u624b\u5de5\u5e03\u5c40
1. \u5de5\u5177\u5370\u5236\u677f\u7684\u7ed3\u6784\u5c3a\u5bf8\u753b\u51fa\u677f\u8fb9\uff08Board Outline\uff09\u3002
2. \u5c06\u5143\u5668\u4ef6\u5206\u6563\uff08Disperse Components\uff09\uff0c\u5143\u5668\u4ef6\u4f1a\u6392\u5217\u5728\u677f\u8fb9\u7684\u5468\u56f4\u3002
3. \u628a\u5143\u5668\u4ef6\u4e00\u4e2a\u4e00\u4e2a\u5730\u79fb\u52a8\u3001\u65cb\u8f6c\uff0c\u653e\u5230\u677f\u8fb9\u4ee5\u5185\uff0c\u6309\u7167\u4e00\u5b9a\u7684\u89c4\u5219\u6446\u653e\u6574\u9f50\u3002
2.3.2 \u81ea\u52a8\u5e03\u5c40 PowerPCB\u63d0\u4f9b\u4e86\u81ea\u52a8\u5e03\u5c40\u548c\u81ea\u52a8\u7684\u5c40\u90e8\u7c07\u5e03\u5c40\uff0c\u4f46\u5bf9\u5927\u591a\u6570\u7684\u8bbe\u8ba1\u6765\u8bf4\uff0c\u6548\u679c\u5e76\u4e0d\u7406\u60f3\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u3002
2.3.3 \u6ce8\u610f\u4e8b\u9879
a. \u5e03\u5c40\u7684\u9996\u8981\u539f\u5219\u662f\u4fdd\u8bc1\u5e03\u7ebf\u7684\u5e03\u901a\u7387\uff0c\u79fb\u52a8\u5668\u4ef6\u65f6\u6ce8\u610f\u98de\u7ebf\u7684\u8fde\u63a5\uff0c\u628a\u6709\u8fde\u7ebf\u5173\u7cfb\u7684\u5668\u4ef6\u653e\u5728\u4e00\u8d77
b. \u6570\u5b57\u5668\u4ef6\u548c\u6a21\u62df\u5668\u4ef6\u8981\u5206\u5f00\uff0c\u5c3d\u91cf\u8fdc\u79bb c. \u53bb\u8026\u7535\u5bb9\u5c3d\u91cf\u9760\u8fd1\u5668\u4ef6\u7684VCC
d. \u653e\u7f6e\u5668\u4ef6\u65f6\u8981\u8003\u8651\u4ee5\u540e\u7684\u710a\u63a5\uff0c\u4e0d\u8981\u592a\u5bc6\u96c6
e. \u591a\u4f7f\u7528\u8f6f\u4ef6\u63d0\u4f9b\u7684Array\u548cUnion\u529f\u80fd\uff0c\u63d0\u9ad8\u5e03\u5c40\u7684\u6548\u7387
2.4 \u5e03\u7ebf \u5e03\u7ebf\u7684\u65b9\u5f0f\u4e5f\u6709\u4e24\u79cd\uff0c\u624b\u5de5\u5e03\u7ebf\u548c\u81ea\u52a8\u5e03\u7ebf\u3002
PowerPCB\u63d0\u4f9b\u7684\u624b\u5de5\u5e03\u7ebf\u529f\u80fd\u5341\u5206\u5f3a\u5927\uff0c\u5305\u62ec\u81ea\u52a8\u63a8\u6324\u3001\u5728\u7ebf\u8bbe\u8ba1\u89c4\u5219\u68c0\u67e5\uff08DRC\uff09\uff0c\u81ea\u52a8\u5e03\u7ebf\u7531Specctra\u7684\u5e03\u7ebf\u5f15\u64ce\u8fdb\u884c\uff0c\u901a\u5e38
\u8fd9\u4e24\u79cd\u65b9\u6cd5\u914d\u5408\u4f7f\u7528\uff0c\u5e38\u7528\u7684\u6b65\u9aa4\u662f\u624b\u5de5\u2014\u81ea\u52a8\u2014\u624b\u5de5\u3002
2.4.1 \u624b\u5de5\u5e03\u7ebf
1. \u81ea\u52a8\u5e03\u7ebf\u524d\uff0c\u5148\u7528\u624b\u5de5\u5e03\u4e00\u4e9b\u91cd\u8981\u7684\u7f51\u7edc\uff0c\u6bd4\u5982\u9ad8\u9891\u65f6\u949f\u3001\u4e3b\u7535\u6e90\u7b49\uff0c\u8fd9\u4e9b\u7f51\u7edc\u5f80\u5f80\u5bf9\u8d70\u7ebf\u8ddd\u79bb\u3001\u7ebf\u5bbd\u3001\u7ebf\u95f4\u8ddd\u3001\u5c4f\u853d\u7b49\u6709\u7279\u6b8a
\u7684\u8981\u6c42\uff1b\u53e6\u5916\u4e00\u4e9b\u7279\u6b8a\u5c01\u88c5\uff0c\u5982BGA\uff0c\u81ea\u52a8\u5e03\u7ebf\u5f88\u96be\u5e03\u5f97\u6709\u89c4\u5219\uff0c\u4e5f\u8981\u7528\u624b\u5de5\u5e03\u7ebf\u3002
2. \u81ea\u52a8\u5e03\u7ebf\u4ee5\u540e\uff0c\u8fd8\u8981\u7528\u624b\u5de5\u5e03\u7ebf\u5bf9PCB\u7684\u8d70\u7ebf\u8fdb\u884c\u8c03\u6574\u3002
2.4.2 \u81ea\u52a8\u5e03\u7ebf \u624b\u5de5\u5e03\u7ebf\u7ed3\u675f\u4ee5\u540e\uff0c\u5269\u4e0b\u7684
\u7f51\u7edc\u5c31\u4ea4\u7ed9\u81ea\u52a8\u5e03\u7ebf\u5668\u6765\u81ea\u5e03\u3002\u9009\u62e9Tools->SPECCTRA\uff0c\u542f\u52a8Specctra\u5e03\u7ebf\u5668\u7684\u63a5\u53e3\uff0c\u8bbe\u7f6e\u597dDO\u6587\u4ef6\uff0c\u6309Continue\u5c31\u542f\u52a8\u4e86Specctra
\u5e03\u7ebf\u5668\u81ea\u52a8\u5e03\u7ebf\uff0c\u7ed3\u675f\u540e\u5982\u679c\u5e03\u901a\u7387\u4e3a100%\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u8fdb\u884c\u624b\u5de5\u8c03\u6574\u5e03\u7ebf\u4e86\uff1b\u5982\u679c\u4e0d\u5230100%\uff0c\u8bf4\u660e\u5e03\u5c40\u6216\u624b\u5de5\u5e03\u7ebf\u6709\u95ee\u9898\uff0c\u9700\u8981
\u8c03\u6574\u5e03\u5c40\u6216\u624b\u5de5\u5e03\u7ebf\uff0c\u76f4\u81f3\u5168\u90e8\u5e03\u901a\u4e3a\u6b62\u3002
2.4.3 \u6ce8\u610f\u4e8b\u9879
a. \u7535\u6e90\u7ebf\u548c\u5730\u7ebf\u5c3d\u91cf\u52a0\u7c97
b. \u53bb\u8026\u7535\u5bb9\u5c3d\u91cf\u4e0eVCC\u76f4\u63a5\u8fde\u63a5
c. \u8bbe\u7f6eSpecctra\u7684DO\u6587\u4ef6\u65f6\uff0c\u9996\u5148\u6dfb\u52a0Protect all wires\u547d\u4ee4\uff0c\u4fdd\u62a4\u624b\u5de5\u5e03\u7684\u7ebf\u4e0d\u88ab\u81ea\u52a8\u5e03\u7ebf\u5668\u91cd\u5e03
d. \u5982\u679c\u6709\u6df7\u5408\u7535\u6e90\u5c42\uff0c\u5e94\u8be5\u5c06\u8be5\u5c42\u5b9a\u4e49\u4e3aSplit/mixed Plane\uff0c\u5728\u5e03\u7ebf\u4e4b\u524d\u5c06\u5176\u5206\u5272\uff0c\u5e03\u5b8c\u7ebf\u4e4b\u540e\uff0c\u4f7f\u7528Pour Manager\u7684Plane
Connect\u8fdb\u884c\u8986\u94dc
e. \u5c06\u6240\u6709\u7684\u5668\u4ef6\u7ba1\u811a\u8bbe\u7f6e\u4e3a\u70ed\u710a\u76d8\u65b9\u5f0f\uff0c\u505a\u6cd5\u662f\u5c06Filter\u8bbe\u4e3aPins\uff0c\u9009\u4e2d\u6240\u6709\u7684\u7ba1\u811a\uff0c\u4fee\u6539\u5c5e\u6027\uff0c\u5728Thermal\u9009\u9879\u524d\u6253\u52fe
f. \u624b\u52a8\u5e03\u7ebf\u65f6\u628aDRC\u9009\u9879\u6253\u5f00\uff0c\u4f7f\u7528\u52a8\u6001\u5e03\u7ebf\uff08Dynamic Route\uff09
2.5 \u68c0\u67e5 \u68c0\u67e5\u7684\u9879\u76ee\u6709\u95f4\u8ddd\uff08Clearance\uff09\u3001\u8fde\u63a5\u6027\uff08Connectivity\uff09\u3001\u9ad8\u901f\u89c4\u5219\uff08High Speed\uff09\u548c\u7535\u6e90\u5c42\uff08Plane\uff09\uff0c\u8fd9\u4e9b\u9879\u76ee
\u53ef\u4ee5\u9009\u62e9Tools->Verify Design\u8fdb\u884c\u3002\u5982\u679c\u8bbe
\u7f6e\u4e86\u9ad8\u901f\u89c4\u5219\uff0c\u5fc5\u987b\u68c0\u67e5\uff0c\u5426\u5219\u53ef\u4ee5\u8df3\u8fc7\u8fd9\u4e00\u9879\u3002\u68c0\u67e5\u51fa\u9519\u8bef\uff0c\u5fc5\u987b\u4fee\u6539\u5e03\u5c40\u548c\u5e03\u7ebf\u3002 \u6ce8\u610f\uff1a \u6709\u4e9b\u9519\u8bef\u53ef\u4ee5\u5ffd\u7565\uff0c\u4f8b\u5982\u6709\u4e9b\u63a5
\u63d2\u4ef6\u7684Outline\u7684\u4e00\u90e8\u5206\u653e\u5728\u4e86\u677f\u6846\u5916\uff0c\u68c0\u67e5\u95f4\u8ddd\u65f6\u4f1a\u51fa\u9519\uff1b\u53e6\u5916\u6bcf\u6b21\u4fee\u6539\u8fc7\u8d70\u7ebf\u548c\u8fc7\u5b54\u4e4b\u540e\uff0c\u90fd\u8981\u91cd\u65b0\u8986\u94dc\u4e00\u6b21\u3002
2.6 \u590d\u67e5 \u590d\u67e5\u6839\u636e\u201cPCB\u68c0\u67e5\u8868\u201d\uff0c\u5185\u5bb9\u5305\u62ec\u8bbe\u8ba1\u89c4\u5219\uff0c\u5c42\u5b9a\u4e49\u3001\u7ebf\u5bbd\u3001\u95f4\u8ddd\u3001\u710a\u76d8\u3001\u8fc7\u5b54\u8bbe\u7f6e\uff1b\u8fd8\u8981\u91cd\u70b9\u590d\u67e5\u5668\u4ef6\u5e03\u5c40\u7684\u5408\u7406
\u6027\uff0c\u7535\u6e90\u3001\u5730\u7ebf\u7f51\u7edc\u7684\u8d70\u7ebf\uff0c\u9ad8\u901f\u65f6\u949f\u7f51\u7edc\u7684\u8d70\u7ebf\u4e0e\u5c4f\u853d\uff0c\u53bb\u8026\u7535\u5bb9\u7684\u6446\u653e\u548c\u8fde\u63a5\u7b49\u3002\u590d\u67e5\u4e0d\u5408\u683c\uff0c\u8bbe\u8ba1\u8005\u8981\u4fee\u6539\u5e03\u5c40\u548c\u5e03\u7ebf\uff0c\u5408
\u683c\u4e4b\u540e\uff0c\u590d\u67e5\u8005\u548c\u8bbe\u8ba1\u8005\u5206\u522b\u7b7e\u5b57\u3002
2.7 \u8bbe\u8ba1\u8f93\u51fa PCB\u8bbe\u8ba1\u53ef\u4ee5\u8f93\u51fa\u5230\u6253\u5370\u673a\u6216\u8f93\u51fa\u5149\u7ed8\u6587\u4ef6\u3002\u6253\u5370\u673a\u53ef\u4ee5\u628aPCB\u5206\u5c42\u6253\u5370\uff0c\u4fbf\u4e8e\u8bbe\u8ba1\u8005\u548c\u590d\u67e5\u8005\u68c0\u67e5\uff1b\u5149\u7ed8\u6587\u4ef6\u4ea4\u7ed9
\u5236\u677f\u5382\u5bb6\uff0c\u751f\u4ea7\u5370\u5236\u677f\u3002\u5149\u7ed8\u6587\u4ef6\u7684\u8f93\u51fa\u5341\u5206\u91cd\u8981\uff0c\u5173\u7cfb\u5230\u8fd9\u6b21\u8bbe\u8ba1\u7684\u6210\u8d25\uff0c\u4e0b\u9762\u5c06\u7740\u91cd\u8bf4\u660e\u8f93\u51fa\u5149\u7ed8\u6587\u4ef6\u7684\u6ce8\u610f
\u4e8b\u9879\u3002
a. \u9700\u8981\u8f93\u51fa\u7684\u5c42\u6709\u5e03\u7ebf\u5c42\uff08\u5305\u62ec\u9876\u5c42\u3001\u5e95\u5c42\u3001\u4e2d\u95f4\u5e03\u7ebf\u5c42\uff09\u3001\u7535\u6e90\u5c42\uff08\u5305\u62ecVCC\u5c42\u548cGND\u5c42\uff09\u3001\u4e1d\u5370\u5c42\uff08\u5305\u62ec\u9876\u5c42\u4e1d\u5370\u3001\u5e95\u5c42\u4e1d\u5370\uff09
\u3001\u963b\u710a\u5c42\uff08\u5305\u62ec\u9876\u5c42\u963b\u710a\u548c\u5e95\u5c42\u963b\u710a\uff09\uff0c\u53e6\u5916\u8fd8\u8981\u751f\u6210\u94bb\u5b54\u6587\u4ef6\uff08NC Drill\uff09 b. \u5982\u679c\u7535\u6e90\u5c42\u8bbe\u7f6e\u4e3aSplit/Mixed\uff0c\u90a3\u4e48\u5728Add
Document\u7a97\u53e3\u7684Document\u9879\u9009\u62e9Routing\uff0c\u5e76\u4e14\u6bcf\u6b21\u8f93\u51fa\u5149\u7ed8\u6587\u4ef6\u4e4b\u524d\uff0c\u90fd\u8981\u5bf9PCB\u56fe\u4f7f\u7528Pour Manager\u7684Plane Connect\u8fdb\u884c\u8986\u94dc\uff1b
\u5982\u679c\u8bbe\u7f6e\u4e3aCAM Plane\uff0c\u5219\u9009\u62e9Plane\uff0c\u5728\u8bbe\u7f6eLayer\u9879\u7684\u65f6\u5019\uff0c\u8981\u628aLayer25\u52a0\u4e0a\uff0c\u5728Layer25\u5c42\u4e2d\u9009\u62e9Pads\u548cViasc. \u5728\u8bbe\u5907\u8bbe\u7f6e\u7a97\u53e3
\uff08\u6309Device Setup\uff09\uff0c\u5c06Aperture\u7684\u503c\u6539\u4e3a199 d. \u5728\u8bbe\u7f6e\u6bcf\u5c42\u7684Layer\u65f6\uff0c\u5c06Board Outline\u9009\u4e0a
e. \u8bbe\u7f6e\u4e1d\u5370\u5c42\u7684Layer\u65f6\uff0c\u4e0d\u8981\u9009\u62e9Part Type\uff0c\u9009\u62e9\u9876\u5c42\uff08\u5e95\u5c42\uff09\u548c\u4e1d\u5370\u5c42\u7684Outline\u3001Text\u3001Line
f. \u8bbe\u7f6e\u963b\u710a\u5c42\u7684Layer\u65f6\uff0c\u9009\u62e9\u8fc7\u5b54\u8868\u793a\u8fc7\u5b54\u4e0a\u4e0d\u52a0\u963b\u710a\uff0c\u4e0d\u9009\u8fc7\u5b54\u8868\u793a\u5bb6\u963b\u710a\uff0c\u89c6\u5177\u4f53\u60c5\u51b5\u786e\u5b9a
g. \u751f\u6210\u94bb\u5b54\u6587\u4ef6\u65f6\uff0c\u4f7f\u7528PowerPCB\u7684\u7f3a\u7701\u8bbe\u7f6e\uff0c\u4e0d\u8981\u4f5c\u4efb\u4f55\u6539\u52a8
h. \u6240\u6709\u5149\u7ed8\u6587\u4ef6\u8f93\u51fa\u4ee5\u540e\uff0c\u7528CAM350\u6253\u5f00\u5e76\u6253\u5370\uff0c\u7531\u8bbe\u8ba1\u8005\u548c\u590d\u67e5\u8005\u6839\u636e\u201cPCB\u68c0\u67e5\u8868\u201d\u68c0\u67e5\u8fc7\u5b54\uff08via\uff09\u662f\u591a\u5c42PCB\u7684\u91cd\u8981\u7ec4
\u6210\u90e8\u5206\u4e4b\u4e00\uff0c\u94bb\u5b54\u7684\u8d39\u7528\u901a\u5e38\u5360PCB\u5236\u677f\u8d39\u7528\u768430%\u523040%\u3002
\u7b80\u5355\u7684\u8bf4\u6765\uff0cPCB\u4e0a\u7684\u6bcf\u4e00\u4e2a\u5b54\u90fd\u53ef\u4ee5\u79f0\u4e4b\u4e3a\u8fc7\u5b54\u3002\u4ece\u4f5c\u7528\u4e0a\u770b\uff0c\u8fc7\u5b54\u53ef\u4ee5\u5206\u6210\u4e24\u7c7b\uff1a\u4e00\u662f\u7528\u4f5c\u5404\u5c42\u95f4\u7684\u7535\u6c14\u8fde\u63a5\uff1b
\u4e8c\u662f\u7528\u4f5c\u5668\u4ef6\u7684\u56fa\u5b9a\u6216\u5b9a\u4f4d\u3002\u5982\u679c\u4ece\u5de5\u827a\u5236\u7a0b\u4e0a\u6765\u8bf4\uff0c\u8fd9\u4e9b\u8fc7\u5b54\u4e00\u822c\u53c8\u5206\u4e3a\u4e09\u7c7b\uff0c\u5373\u76f2\u5b54(blind via)\u3001\u57cb\u5b54(buried via)\u548c\u901a\u5b54
(through via)\u3002\u76f2\u5b54\u4f4d\u4e8e\u5370\u5237\u7ebf\u8def\u677f\u7684\u9876\u5c42\u548c\u5e95\u5c42\u8868\u9762\uff0c\u5177\u6709\u4e00\u5b9a\u6df1\u5ea6\uff0c\u7528\u4e8e\u8868\u5c42\u7ebf\u8def\u548c\u4e0b\u9762\u7684\u5185\u5c42\u7ebf\u8def\u7684\u8fde\u63a5\uff0c\u5b54\u7684\u6df1\u5ea6\u901a\u5e38\u4e0d
\u8d85\u8fc7\u4e00\u5b9a\u7684\u6bd4\u7387(\u5b54\u5f84)\u3002\u57cb\u5b54\u662f\u6307\u4f4d\u4e8e\u5370\u5237\u7ebf\u8def\u677f\u5185\u5c42\u7684\u8fde\u63a5\u5b54\uff0c\u5b83\u4e0d\u4f1a\u5ef6\u4f38\u5230\u7ebf\u8def\u677f\u7684\u8868\u9762\u3002\u4e0a\u8ff0\u4e24\u7c7b\u5b54\u90fd\u4f4d\u4e8e\u7ebf\u8def\u677f\u7684\u5185\u5c42\uff0c
\u5c42\u538b\u524d\u5229\u7528\u901a\u5b54\u6210\u578b\u5de5\u827a\u5b8c\u6210\uff0c\u5728\u8fc7\u5b54\u5f62\u6210\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u8fd8\u4f1a\u91cd\u53e0\u505a\u597d\u51e0\u4e2a\u5185\u5c42\u3002\u7b2c\u4e09\u79cd\u79f0\u4e3a\u901a\u5b54\uff0c\u8fd9\u79cd\u5b54\u7a7f\u8fc7\u6574\u4e2a\u7ebf\u8def\u677f\uff0c\u53ef\u7528\u4e8e\u5b9e
\u73b0\u5185\u90e8\u4e92\u8fde\u6216\u4f5c\u4e3a\u5143\u4ef6\u7684\u5b89\u88c5\u5b9a\u4f4d\u5b54\u3002\u7531\u4e8e\u901a\u5b54\u5728\u5de5\u827a\u4e0a\u66f4\u6613\u4e8e\u5b9e\u73b0\uff0c\u6210\u672c\u8f83\u4f4e\uff0c\u6240\u4ee5\u7edd\u5927\u90e8\u5206\u5370\u5237\u7535\u8def\u677f\u5747\u4f7f\u7528\u5b83\uff0c\u800c\u4e0d\u7528\u53e6\u5916\u4e24
\u79cd\u8fc7\u5b54\u3002\u4ee5\u4e0b\u6240\u8bf4\u7684\u8fc7\u5b54\uff0c\u6ca1\u6709\u7279\u6b8a\u8bf4\u660e\u7684\uff0c\u5747\u4f5c\u4e3a\u901a\u5b54\u8003\u8651\u3002 \u4ece\u8bbe\u8ba1\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u4e00\u4e2a\u8fc7\u5b54\u4e3b\u8981\u7531\u4e24\u4e2a\u90e8\u5206\u7ec4\u6210\uff0c\u4e00\u662f\u4e2d\u95f4\u7684\u94bb\u5b54
\uff08drill hole\uff09,\u4e8c\u662f\u94bb\u5b54\u5468\u56f4\u7684\u710a\u76d8\u533a\uff0c\u89c1\u4e0b\u56fe\u3002\u8fd9\u4e24\u90e8\u5206\u7684\u5c3a\u5bf8\u5927\u5c0f\u51b3\u5b9a\u4e86\u8fc7\u5b54\u7684\u5927\u5c0f\u3002\u5f88\u663e\u7136\uff0c\u5728\u9ad8\u901f,\u9ad8\u5bc6\u5ea6\u7684PCB\u8bbe\u8ba1\u65f6\uff0c\u8bbe
\u8ba1\u8005\u603b\u662f\u5e0c\u671b\u8fc7\u5b54\u8d8a\u5c0f\u8d8a\u597d\uff0c\u8fd9\u6837\u677f\u4e0a\u53ef\u4ee5\u7559\u6709\u66f4\u591a\u7684\u5e03\u7ebf\u7a7a\u95f4\uff0c\u6b64\u5916\uff0c\u8fc7\u5b54\u8d8a\u5c0f\uff0c\u5176\u81ea\u8eab\u7684\u5bc4\u751f\u7535\u5bb9\u4e5f\u8d8a\u5c0f\uff0c\u66f4\u9002\u5408\u7528\u4e8e\u9ad8\u901f\u7535\u8def\u3002
\u4f46\u5b54\u5c3a\u5bf8\u7684\u51cf\u5c0f\u540c\u65f6\u5e26\u6765\u4e86\u6210\u672c\u7684\u589e\u52a0\uff0c\u800c\u4e14\u8fc7\u5b54\u7684\u5c3a\u5bf8\u4e0d\u53ef\u80fd\u65e0\u9650\u5236\u7684\u51cf\u5c0f\uff0c\u5b83\u53d7\u5230\u94bb\u5b54(drill)\u548c\u7535\u9540\uff08plating\uff09\u7b49\u5de5\u827a\u6280\u672f\u7684
\u9650\u5236\uff1a\u5b54\u8d8a\u5c0f\uff0c\u94bb\u5b54\u9700\u82b1\u8d39\u7684\u65f6\u95f4\u8d8a\u957f\uff0c\u4e5f\u8d8a\u5bb9\u6613\u504f\u79bb\u4e2d\u5fc3\u4f4d\u7f6e\uff1b\u4e14\u5f53\u5b54\u7684\u6df1\u5ea6\u8d85\u8fc7\u94bb\u5b54\u76f4\u5f84\u76846\u500d\u65f6\uff0c\u5c31\u65e0\u6cd5\u4fdd\u8bc1\u5b54\u58c1\u80fd\u5747\u5300\u9540\u94dc\u3002
\u6bd4\u5982\uff0c\u73b0\u5728\u6b63\u5e38\u7684\u4e00\u57576\u5c42PCB\u677f\u7684\u539a\u5ea6\uff08\u901a\u5b54\u6df1\u5ea6\uff09\u4e3a50Mil\u5de6\u53f3\uff0c\u6240\u4ee5PCB\u5382\u5bb6\u80fd\u63d0\u4f9b\u7684\u94bb\u5b54\u76f4\u5f84\u6700\u5c0f\u53ea\u80fd\u8fbe\u52308Mil\u3002 \u4e8c\u3001\u8fc7\u5b54\u7684\u5bc4
\u751f\u7535\u5bb9 \u8fc7\u5b54\u672c\u8eab\u5b58\u5728\u7740\u5bf9\u5730\u7684\u5bc4\u751f\u7535\u5bb9\uff0c\u5982\u679c\u5df2\u77e5\u8fc7\u5b54\u5728\u94fa\u5730\u5c42\u4e0a\u7684\u9694\u79bb\u5b54\u76f4\u5f84\u4e3aD2,\u8fc7\u5b54\u710a\u76d8\u7684\u76f4\u5f84\u4e3aD1,PCB\u677f\u7684\u539a\u5ea6\u4e3aT,\u677f\u57fa\u6750
\u4ecb\u7535\u5e38\u6570\u4e3a\u03b5,\u5219\u8fc7\u5b54\u7684\u5bc4\u751f\u7535\u5bb9\u5927\u5c0f\u8fd1\u4f3c\u4e8e\uff1a C=1.41\u03b5TD1/(D2-D1) \u8fc7\u5b54\u7684\u5bc4\u751f\u7535\u5bb9\u4f1a\u7ed9\u7535\u8def\u9020\u6210\u7684\u4e3b\u8981\u5f71\u54cd\u662f\u5ef6\u957f\u4e86\u4fe1\u53f7\u7684\u4e0a\u5347
\u65f6\u95f4\uff0c\u964d\u4f4e\u4e86\u7535\u8def\u7684\u901f\u5ea6\u3002\u4e3e\u4f8b\u6765\u8bf4\uff0c\u5bf9\u4e8e\u4e00\u5757\u539a\u5ea6\u4e3a50Mil\u7684PCB\u677f\uff0c\u5982\u679c\u4f7f\u7528\u5185\u5f84\u4e3a10Mil\uff0c\u710a\u76d8\u76f4\u5f84\u4e3a20Mil\u7684\u8fc7\u5b54\uff0c\u710a\u76d8\u4e0e\u5730\u94fa
\u94dc\u533a\u7684\u8ddd\u79bb\u4e3a32Mil,\u5219\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e0a\u9762\u7684\u516c\u5f0f\u8fd1\u4f3c\u7b97\u51fa\u8fc7\u5b54\u7684\u5bc4\u751f\u7535\u5bb9\u5927\u81f4\u662f\uff1aC=1.41x4.4x0.050x0.020/(0.032-0.020)=0.517pF\uff0c
\u8fd9\u90e8\u5206\u7535\u5bb9\u5f15\u8d77\u7684\u4e0a\u5347\u65f6\u95f4\u53d8\u5316\u91cf\u4e3a\uff1aT10-90=2.2C(Z0/2)=2.2x0.517x(55/2)=31.28ps \u3002\u4ece\u8fd9\u4e9b\u6570\u503c\u53ef\u4ee5\u770b\u51fa\uff0c\u5c3d\u7ba1\u5355\u4e2a\u8fc7\u5b54\u7684\u5bc4\u751f
\u7535\u5bb9\u5f15\u8d77\u7684\u4e0a\u5347\u5ef6\u53d8\u7f13\u7684\u6548\u7528\u4e0d\u662f\u5f88\u660e\u663e\uff0c\u4f46\u662f\u5982\u679c\u8d70\u7ebf\u4e2d\u591a\u6b21\u4f7f\u7528\u8fc7\u5b54\u8fdb\u884c\u5c42\u95f4\u7684\u5207\u6362\uff0c\u8bbe\u8ba1\u8005\u8fd8\u662f\u8981\u614e\u91cd\u8003\u8651\u7684\u3002
\u4e09\u3001\u8fc7\u5b54\u7684\u5bc4\u751f\u7535\u611f \u540c\u6837\uff0c\u8fc7\u5b54\u5b58\u5728\u5bc4\u751f\u7535\u5bb9\u7684\u540c\u65f6\u4e5f\u5b58\u5728\u7740\u5bc4\u751f\u7535\u611f\uff0c\u5728\u9ad8\u901f\u6570\u5b57\u7535\u8def\u7684\u8bbe\u8ba1\u4e2d\uff0c\u8fc7\u5b54\u7684\u5bc4\u751f\u7535\u611f\u5e26\u6765\u7684\u5371\u5bb3
\u5f80\u5f80\u5927\u4e8e\u5bc4\u751f\u7535\u5bb9\u7684\u5f71\u54cd\u3002\u5b83\u7684\u5bc4\u751f\u4e32\u8054\u7535\u611f\u4f1a\u524a\u5f31\u65c1\u8def\u7535\u5bb9\u7684\u8d21\u732e\uff0c\u51cf\u5f31\u6574\u4e2a\u7535\u6e90\u7cfb\u7edf\u7684\u6ee4\u6ce2\u6548\u7528\u3002\u6211\u4eec\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u516c\u5f0f\u6765\u7b80
\u5355\u5730\u8ba1\u7b97\u4e00\u4e2a\u8fc7\u5b54\u8fd1\u4f3c\u7684\u5bc4\u751f\u7535\u611f\uff1a L=5.08h[ln(4h/d)+1]\u5176\u4e2dL\u6307\u8fc7\u5b54\u7684\u7535\u611f\uff0ch\u662f\u8fc7\u5b54\u7684\u957f\u5ea6\uff0cd\u662f\u4e2d\u5fc3\u94bb\u5b54\u7684\u76f4\u5f84\u3002\u4ece\u5f0f\u4e2d\u53ef\u4ee5
\u770b\u51fa\uff0c\u8fc7\u5b54\u7684\u76f4\u5f84\u5bf9\u7535\u611f\u7684\u5f71\u54cd\u8f83\u5c0f\uff0c\u800c\u5bf9\u7535\u611f\u5f71\u54cd\u6700\u5927\u7684\u662f\u8fc7\u5b54\u7684\u957f\u5ea6\u3002\u4ecd\u7136\u91c7\u7528\u4e0a\u9762\u7684\u4f8b\u5b50\uff0c\u53ef\u4ee5\u8ba1\u7b97\u51fa\u8fc7\u5b54\u7684\u7535\u611f\u4e3a\uff1aL=
5.08x0.050[ln(4x0.050/0.010)+1]=1.015nH \u3002\u5982\u679c\u4fe1\u53f7\u7684\u4e0a\u5347\u65f6\u95f4\u662f1ns\uff0c\u90a3\u4e48\u5176\u7b49\u6548\u963b\u6297\u5927\u5c0f\u4e3a\uff1aXL=\u03c0L/T10-90=3.19\u03a9\u3002\u8fd9\u6837
\u7684\u963b\u6297\u5728\u6709\u9ad8\u9891\u7535\u6d41\u7684\u901a\u8fc7\u5df2\u7ecf\u4e0d\u80fd\u591f\u88ab\u5ffd\u7565\uff0c\u7279\u522b\u8981\u6ce8\u610f\uff0c\u65c1\u8def\u7535\u5bb9\u5728\u8fde\u63a5\u7535\u6e90\u5c42\u548c\u5730\u5c42\u7684\u65f6\u5019\u9700\u8981\u901a\u8fc7\u4e24\u4e2a\u8fc7\u5b54\uff0c\u8fd9\u6837\u8fc7\u5b54\u7684
\u5bc4\u751f\u7535\u611f\u5c31\u4f1a\u6210\u500d\u589e\u52a0\u3002
\u56db\u3001\u9ad8\u901fPCB\u4e2d\u7684\u8fc7\u5b54\u8bbe\u8ba1 \u901a\u8fc7\u4e0a\u9762\u5bf9\u8fc7\u5b54\u5bc4\u751f\u7279\u6027\u7684\u5206\u6790\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5728\u9ad8\u901fPCB\u8bbe\u8ba1\u4e2d\uff0c\u770b\u4f3c\u7b80\u5355\u7684\u8fc7 \u5b54\u5f80\u5f80\u4e5f\u4f1a\u7ed9\u7535\u8def
\u7684\u8bbe\u8ba1\u5e26\u6765\u5f88\u5927\u7684\u8d1f\u9762\u6548\u5e94\u3002\u4e3a\u4e86\u51cf\u5c0f\u8fc7\u5b54\u7684\u5bc4\u751f\u6548\u5e94\u5e26\u6765\u7684\u4e0d\u5229\u5f71\u54cd\uff0c\u5728\u8bbe\u8ba1\u4e2d\u53ef\u4ee5\u5c3d\u91cf\u505a\u5230\uff1a
1\u3001\u4ece\u6210\u672c\u548c\u4fe1\u53f7\u8d28\u91cf\u4e24\u65b9\u9762\u8003\u8651\uff0c\u9009\u62e9\u5408\u7406\u5c3a\u5bf8\u7684\u8fc7\u5b54\u5927\u5c0f\u3002\u6bd4\u5982\u5bf96-10\u5c42\u7684\u5185 \u5b58\u6a21\u5757PCB\u8bbe\u8ba1\u6765\u8bf4\uff0c\u9009\u752810/20Mil\uff08\u94bb\u5b54/\u710a\u76d8\uff09
\u7684\u8fc7\u5b54\u8f83\u597d\uff0c\u5bf9\u4e8e\u4e00\u4e9b\u9ad8\u5bc6\u5ea6\u7684\u5c0f\u5c3a\u5bf8\u7684\u677f\u5b50\uff0c\u4e5f\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u75288/18Mil\u7684\u8fc7\u5b54\u3002\u76ee\u524d\u6280\u672f\u6761\u4ef6\u4e0b\uff0c\u5f88\u96be\u4f7f\u7528\u66f4\u5c0f\u5c3a\u5bf8\u7684\u8fc7\u5b54\u4e86\u3002\u5bf9
\u4e8e\u7535\u6e90\u6216\u5730\u7ebf\u7684\u8fc7\u5b54\u5219\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u8f83\u5927\u5c3a\u5bf8\uff0c\u4ee5\u51cf\u5c0f\u963b\u6297\u3002
2\u3001\u4e0a\u9762\u8ba8\u8bba\u7684\u4e24\u4e2a\u516c\u5f0f\u53ef\u4ee5\u5f97\u51fa\uff0c\u4f7f\u7528\u8f83\u8584\u7684PCB\u677f\u6709\u5229\u4e8e\u51cf\u5c0f\u8fc7\u5b54\u7684\u4e24\u79cd\u5bc4 \u751f\u53c2\u6570\u3002
3\u3001PCB\u677f\u4e0a\u7684\u4fe1\u53f7\u8d70\u7ebf\u5c3d\u91cf\u4e0d\u6362\u5c42\uff0c\u4e5f\u5c31\u662f\u8bf4\u5c3d\u91cf\u4e0d\u8981\u4f7f\u7528\u4e0d\u5fc5\u8981\u7684\u8fc7\u5b54\u3002
4\u3001\u7535\u6e90\u548c\u5730\u7684\u7ba1\u811a\u8981\u5c31\u8fd1\u6253\u8fc7\u5b54\uff0c\u8fc7\u5b54\u548c\u7ba1\u811a\u4e4b\u95f4\u7684\u5f15\u7ebf\u8d8a\u77ed\u8d8a\u597d\uff0c\u56e0\u4e3a\u5b83\u4eec\u4f1a \u5bfc\u81f4\u7535\u611f\u7684\u589e\u52a0\u3002\u540c\u65f6\u7535\u6e90\u548c\u5730\u7684\u5f15\u7ebf\u8981\u5c3d\u53ef\u80fd\u7c97\uff0c
\u4ee5\u51cf\u5c11\u963b\u6297\u3002
5\u3001\u5728\u4fe1\u53f7\u6362\u5c42\u7684\u8fc7\u5b54\u9644\u8fd1\u653e\u7f6e\u4e00\u4e9b\u63a5\u5730\u7684\u8fc7\u5b54\uff0c\u4ee5\u4fbf\u4e3a\u4fe1\u53f7\u63d0\u4f9b\u6700\u8fd1\u7684\u56de\u8def\u3002\u751a\u81f3\u53ef\u4ee5\u5728PCB\u677f\u4e0a\u5927\u91cf\u653e\u7f6e\u4e00\u4e9b\u591a\u4f59\u7684\u63a5\u5730\u8fc7\u5b54\u3002\u5f53
\u7136\uff0c\u5728\u8bbe\u8ba1\u65f6\u8fd8\u9700\u8981\u7075\u6d3b\u591a\u53d8\u3002\u524d\u9762\u8ba8\u8bba\u7684\u8fc7\u5b54\u6a21\u578b\u662f\u6bcf\u5c42\u5747\u6709\u710a\u76d8\u7684\u60c5\u51b5\uff0c\u4e5f\u6709\u7684\u65f6\u5019\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u67d0\u4e9b\u5c42\u7684\u710a\u76d8\u51cf\u5c0f\u751a\u81f3\u53bb\u6389\u3002
\u7279\u522b\u662f\u5728\u8fc7\u5b54\u5bc6\u5ea6\u975e\u5e38\u5927\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5728\u94fa\u94dc\u5c42\u5f62\u6210\u4e00\u4e2a\u9694\u65ad\u56de\u8def\u7684\u65ad\u69fd\uff0c\u89e3\u51b3\u8fd9\u6837\u7684\u95ee\u9898\u9664\u4e86\u79fb\u52a8\u8fc7\u5b54\u7684\u4f4d\u7f6e\uff0c\u6211\u4eec\u8fd8\u53ef
\u4ee5\u8003\u8651\u5c06\u8fc7\u5b54\u5728\u8be5\u94fa\u94dc\u5c42\u7684\u710a\u76d8\u5c3a\u5bf8\u51cf\u5c0f\u3002
\u6c42\u91c7\u7eb3\u4e3a\u6ee1\u610f\u56de\u7b54\u3002
例如：用双20V带中心抽头的变压器，输出端的中心抽头接地，另外两根线经过桥式整流得到正负18V以上的电压(整流后的电压范围大约在18V至32V之间)，由4700uF耐压50V以上的电解电容滤波，再经过LM317、LM337稳压，按照这两种芯片的标准接法接线，用电阻调整至正负15V。 LM317和LM337要用散热片散热。次级双电压输出的变压器中间抽头为接地端（GND），直接在那里引过去就行了。变压器的中间那条线就是地线(GND)，LM317和LM337的地也是接在那里的。LM317是和LM337分别作为正负稳压。LM317输出端和地(GND)之间,是正电压。LM337输出端和地（GND）之间是负电压。看图：
用烙铁可以焊接 就看你技术了
旱在GND上面
绛旓細渚嬪锛氱敤鍙20V甯︿腑蹇冩娊澶寸殑鍙樺帇鍣紝杈撳嚭绔殑涓績鎶藉ご鎺ュ湴锛屽彟澶栦袱鏍圭嚎缁忚繃妗ュ紡鏁存祦寰楀埌姝ｈ礋18V浠ヤ笂鐨勭數鍘(鏁存祦鍚庣殑鐢靛帇鑼冨洿澶х害鍦18V鑷32V涔嬮棿)锛岀敱4700uF鑰愬帇50V浠ヤ笂鐨勭數瑙ｇ數瀹规护娉紝鍐嶇粡杩嘗M317銆丩M337绋冲帇锛屾寜鐓ц繖涓ょ鑺墖鐨勬爣鍑嗘帴娉曟帴绾匡紝鐢ㄧ數闃昏皟鏁磋嚦姝ｈ礋15V銆 LM317鍜孡M337瑕佺敤鏁ｇ儹鐗囨暎鐑傛绾у弻鐢靛帇...
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