{"id":1855,"date":"2018-12-19T14:17:04","date_gmt":"2018-12-19T14:17:04","guid":{"rendered":""},"modified":"2018-12-19T22:17:36","modified_gmt":"2018-12-19T14:17:36","slug":"usb+pcb%e5%b8%83%e7%ba%bf%e7%bb%8f%e9%aa%8c%e6%95%99%e8%ae%ad%e2%80%94%e2%80%94%e2%80%9c%e8%a1%80%e8%ae%ad%e2%80%9d","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1855","title":{"rendered":"USB PCB\u5e03\u7ebf\u7ecf\u9a8c\u6559\u8bad\u2014\u2014\u201c\u8840\u8bad\u201d"},"content":{"rendered":"

\n\tUSB\u662f\u4e00\u79cd\u5feb\u901f\u3001\u53cc\u5411\u3001\u540c\u6b65\u4f20\u8f93\u3001\u5ec9\u4ef7\u3001\u65b9\u4fbf\u4f7f\u7528\u7684\u53ef\u70ed\u62d4\u63d2\u7684\u4e32\u884c\u63a5\u53e3\u3002\u7531\u4e8e\u6570\u636e\u4f20\u8f93\u5feb\uff0c\u63a5\u53e3\u65b9\u4fbf\uff0c\u652f\u6301\u70ed\u63d2\u62d4\u7b49\u4f18\u70b9\u4f7fUSB\u8bbe\u5907\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002\u76ee\u524d\uff0c\u5e02\u573a\u4e0a\u4ee5USB2.0\u4e3a\u63a5\u53e3\u7684\u4ea7\u54c1\u5c45\u591a\uff0c\u4f46\u5f88\u591a\u786c\u4ef6\u65b0\u624b\u5728USB\u5e94\u7528\u4e2d\u9047\u5230\u5f88\u591a\u56f0\u6270\uff0c\u5f80\u5f80PCB\u88c5\u914d\u5b8c\u4e4b\u540eUSB\u63a5\u53e3\u51fa\u73b0\u5404\u79cd\u95ee\u9898<\/p>\n

\n\t <\/p>\n

\n\t\u6bd4\u5982\u901a\u8baf\u4e0d\u7a33\u5b9a\u6216\u662f\u65e0\u6cd5\u901a\u8baf\uff0c\u68c0\u67e5\u539f\u7406\u56fe\u548c\u710a\u63a5\u90fd\u65e0\u95ee\u9898\uff0c\u6216\u8bb8\u8fd9\u4e2a\u65f6\u5019\u5c31\u9700\u6000\u7591PCB\u8bbe\u8ba1\u4e0d\u5408\u7406\u3002\u7ed8\u5236\u6ee1\u8db3USB2.0\u6570\u636e\u4f20\u8f93\u8981\u6c42\u7684PCB\u5bf9\u4ea7\u54c1\u7684\u6027\u80fd\u53ca\u53ef\u9760\u6027\u6709\u7740\u6781\u4e3a\u91cd\u8981\u7684\u4f5c\u7528\u3002<\/p>\n

\n\t <\/p>\n

\n\tUSB\u534f\u8bae\u5b9a\u4e49\u7531\u4e24\u6839\u5dee\u5206\u4fe1\u53f7\u7ebf\uff08D+\u3001D-\uff09\u4f20\u8f93\u6570\u5b57\u4fe1\u53f7\uff0c\u82e5\u8981USB\u8bbe\u5907\u5de5\u4f5c\u7a33\u5b9a\u5dee\u5206\u4fe1\u53f7\u7ebf\u5c31\u5fc5\u987b\u4e25\u683c\u6309\u7167\u5dee\u5206\u4fe1\u53f7\u7684\u89c4\u5219\u6765\u5e03\u5c40\u5e03\u7ebf\u3002\u6839\u636e\u7b14\u8005\u591a\u5e74USB\u76f8\u5173\u4ea7\u54c1\u8bbe\u8ba1\u4e0e\u8c03\u8bd5\u7ecf\u9a8c\uff0c\u603b\u7ed3\u4ee5\u4e0b\u6ce8\u610f\u8981\u70b9\uff1a<\/p>\n

\n\t1. \u5728\u5143\u4ef6\u5e03\u5c40\u65f6\uff0c\u5c3d\u91cf\u4f7f\u5dee\u5206\u7ebf\u8def\u6700\u77ed\uff0c\u4ee5\u7f29\u77ed\u5dee\u5206\u7ebf\u8d70\u7ebf\u8ddd\u79bb\uff08√\u4e3a\u5408\u7406\u7684\u65b9\u5f0f\uff0c×\u4e3a\u4e0d\u5408\u7406\u65b9\u5f0f\uff09\uff1b<\/p>\n

\n\t<\/p>\n

\n\t <\/p>\n

\n\t2. \u4f18\u5148\u7ed8\u5236\u5dee\u5206\u7ebf\uff0c\u4e00\u5bf9\u5dee\u5206\u7ebf\u4e0a\u5c3d\u91cf\u4e0d\u8981\u8d85\u8fc7\u4e24\u5bf9\u8fc7\u5b54\uff08\u8fc7\u5b54\u4f1a\u589e\u52a0\u7ebf\u8def\u7684\u5bc4\u751f\u7535\u611f\uff0c\u4ece\u800c\u5f71\u54cd\u7ebf\u8def\u7684\u4fe1\u53f7\u5b8c\u6574\u6027\uff09\uff0c\u4e14\u9700\u5bf9\u79f0\u653e\u7f6e\uff08√\u4e3a\u5408\u7406\u7684\u65b9\u5f0f\uff0c×\u4e3a\u4e0d\u5408\u7406\u65b9\u5f0f\uff09\uff1b<\/p>\n

\n\t <\/p>\n

\n\t<\/p>\n

\n\t <\/p>\n

\n\t3. \u5bf9\u79f0\u5e73\u884c\u8d70\u7ebf\uff0c\u8fd9\u6837\u80fd\u4fdd\u8bc1\u4e24\u6839\u7ebf\u7d27\u8026\u5408\uff0c\u907f\u514d90°\u8d70\u7ebf\uff0c\u5f27\u5f62\u621645°\u5747\u662f\u8f83\u597d\u7684\u8d70\u7ebf\u65b9\u5f0f\uff08√\u4e3a\u5408\u7406\u7684\u65b9\u5f0f\uff0c×\u4e3a\u4e0d\u5408\u7406\u65b9\u5f0f\uff09\uff1b<\/p>\n

\n\t <\/p>\n

\n\t<\/p>\n

\n\t <\/p>\n

\n\t4. \u5dee\u5206\u4e32\u63a5\u963b\u5bb9\uff0c\u6d4b\u8bd5\u70b9\uff0c\u4e0a\u4e0b\u62c9\u7535\u963b\u7684\u6446\u653e\uff08√\u4e3a\u5408\u7406\u7684\u65b9\u5f0f\uff0c×\u4e3a\u4e0d\u5408\u7406\u65b9\u5f0f\uff09\uff1b<\/p>\n

\n\t <\/p>\n

\n\t<\/p>\n

\n\t <\/p>\n

\n\t5. \u7531\u4e8e\u7ba1\u811a\u5206\u5e03\u3001\u8fc7\u5b54\u3001\u4ee5\u53ca\u8d70\u7ebf\u7a7a\u95f4\u7b49\u56e0\u7d20\u5b58\u5728\u4f7f\u5f97\u5dee\u5206\u7ebf\u957f\u6613\u4e0d\u5339\u914d\uff0c\u800c\u7ebf\u957f\u4e00\u65e6\u4e0d\u5339\u914d\uff0c\u65f6\u5e8f\u4f1a\u53d1\u751f\u504f\u79fb\uff0c\u8fd8\u4f1a\u5f15\u5165\u5171\u6a21\u5e72\u6270\uff0c\u964d\u4f4e\u4fe1\u53f7\u8d28\u91cf\u3002\u6240\u4ee5\uff0c\u76f8\u5e94\u7684\u8981\u5bf9\u5dee\u5206\u5bf9\u4e0d\u5339\u914d\u7684\u60c5\u51b5\u4f5c\u51fa\u8865\u507f\uff0c\u4f7f\u5176\u7ebf\u957f\u5339\u914d\uff0c\u957f\u5ea6\u5dee\u901a\u5e38\u63a7\u5236\u57285mil\u4ee5\u5185\uff0c\u8865\u507f\u539f\u5219\u662f\u54ea\u91cc\u51fa\u73b0\u957f\u5ea6\u5dee\u8865\u507f\u54ea\u91cc\uff1b<\/p>\n

\n\t <\/p>\n

\n\t<\/p>\n

\n\t <\/p>\n

\n\t6. \u4e3a\u4e86\u51cf\u5c11\u4e32\u6270\uff0c\u5728\u7a7a\u95f4\u5141\u8bb8\u7684\u60c5\u51b5\u4e0b\uff0c\u5176\u4ed6\u4fe1\u53f7\u7f51\u7edc\u53ca\u5730\u79bb\u5dee\u5206\u7ebf\u7684\u95f4\u8ddd\u81f3\u5c1120mil(20mil\u662f\u7ecf\u9a8c\u503c)\uff0c\u8986\u5730\u4e0e\u5dee\u5206\u7ebf\u7684\u8ddd\u79bb\u8fc7\u8fd1\u5c06\u5bf9\u5dee\u5206\u7ebf\u7684\u963b\u6297\u4ea7\u751f\u5f71\u54cd\uff1b<\/p>\n

\n\t <\/p>\n

\n\t<\/p>\n

\n\t <\/p>\n

\n\t7. USB\u7684\u8f93\u51fa\u7535\u6d41\u662f500mA\uff0c\u9700\u6ce8\u610fVBUS\u53caGND\u7684\u7ebf\u5bbd\uff0c\u82e5\u91c7\u7528\u76841Oz\u7684\u94dc\u7b94\uff0c\u7ebf\u5bbd\u5927\u4e8e20mil\u5373\u53ef\u6ee1\u8db3\u8f7d\u6d41\u8981\u6c42\uff0c\u5f53\u7136\u7ebf\u5bbd\u8d8a\u5bbd\u7535\u6e90\u7684\u5b8c\u6574\u6027\u8d8a\u597d\u3002<\/p>\n

\n\t <\/p>\n

\n\t\u666e\u901aUSB\u8bbe\u5907\u5dee\u5206\u7ebf\u4fe1\u53f7\u7ebf\u5bbd\u53ca\u7ebf\u95f4\u8ddd\u4e0e\u6574\u677f\u4fe1\u53f7\u7ebf\u5bbd\u53ca\u7ebf\u95f4\u8ddd\u4e00\u81f4\u5373\u53ef\u3002\u7136\u800c\u5f53USB\u8bbe\u5907\u5de5\u4f5c\u901f\u5ea6\u662f480 Mbits\/s\uff0c\u53ea\u505a\u5230\u4ee5\u4e0a\u51e0\u70b9\u662f\u4e0d\u591f\u7684\uff0c\u6211\u4eec\u8fd8\u9700\u5bf9\u5dee\u5206\u4fe1\u53f7\u8fdb\u884c\u963b\u6297\u63a7\u5236\uff0c\u63a7\u5236\u5dee\u5206\u4fe1\u53f7\u7ebf\u7684\u963b\u6297\u5bf9\u9ad8\u901f\u6570\u5b57\u4fe1\u53f7\u7684\u5b8c\u6574\u6027\u662f\u975e\u5e38\u91cd\u8981\u7684<\/p>\n

\n\t <\/p>\n

\n\t\u56e0\u4e3a\u5dee\u5206\u963b\u6297\u5f71\u54cd\u5dee\u5206\u4fe1\u53f7\u7684\u773c\u56fe\u3001\u4fe1\u53f7\u5e26\u5bbd\u3001\u4fe1\u53f7\u6296\u52a8\u548c\u4fe1\u53f7\u7ebf\u4e0a\u7684\u5e72\u6270\u7535\u538b\u3002\u5dee\u5206\u7ebf\u963b\u6297\u4e00\u822c\u63a7\u5236\u572890\uff08±10%\uff09\u6b27\u59c6(\u5177\u4f53\u503c\u53c2\u7167\u82af\u7247\u624b\u518c\u6307\u5bfc)\uff0c\u5dee\u5206\u7ebf\u963b\u6297\u4e0e\u7ebf\u5bbdW1\u3001W2\u3001T1\u6210\u53cd\u6bd4\uff0c\u4e0e\u4ecb\u7535\u5e38\u6570Er1\u6210\u53cd\u6bd4\uff0c\u4e0e\u7ebf\u95f4\u8dddS1\u6210\u6b63\u6bd4\uff0c\u4e0e\u53c2\u8003\u5c42\u7684\u8ddd\u79bbH1\u6b63\u6bd4\uff0c\u5982\u4e0b\u56fe\u662f\u5dee\u5206\u7ebf\u7684\u622a\u9762\u56fe\u3002<\/p>\n

\n\t <\/p>\n

\n\t<\/p>\n

\n\t <\/p>\n

\n\t\u4e0b\u56fe\u4e3a\u56db\u5c42\u677f\u7684\u53c2\u8003\u53e0\u5c42\uff0c\u5176\u4e2d\u4e2d\u95f4\u4e24\u5c42\u4e3a\u53c2\u8003\u5c42\uff0c\u53c2\u8003\u5c42\u901a\u5e38\u4e3aGND\u6216Power\uff0c\u5e76\u4e14\u5dee\u5206\u7ebf\u6240\u5bf9\u5e94\u7684\u53c2\u8003\u5c42\u5fc5\u987b\u5b8c\u6574\uff0c\u4e0d\u80fd\u88ab\u5206\u5272\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u5dee\u5206\u7ebf\u963b\u6297\u4e0d\u8fde\u7eed\u3002\u82e5\u662f\u4ee5\u56fe 2\u53e0\u5c42\u8bbe\u8ba1\u56db\u5c42\u677f\uff0c\u901a\u5e38\u8bbe\u8ba1\u65f6\u5dee\u5206\u7ebf\u91c7\u75284.5mil\u7684\u7ebf\u5bbd\u53ca5.5mil\u7684\u7ebf\u95f4\u8ddd\u65e2\u53ef\u4ee5\u6ee1\u8db3\u5dee\u5206\u963b\u629790Ω\u3002<\/p>\n

\n\t <\/p>\n

\n\t\u7136\u800c4.5mil\u7ebf\u5bbd\u53ca5.5mil\u7ebf\u95f4\u8ddd\u53ea\u662f\u6211\u4eec\u7406\u8bba\u8bbe\u8ba1\u503c\uff0c\u6700\u7ec8\u7535\u8def\u677f\u5382\u4f9d\u636e\u8981\u6c42\u7684\u963b\u6297\u503c\u5e76\u7ed3\u5408\u751f\u4ea7\u7684\u5b9e\u9645\u60c5\u51b5\u548c\u677f\u6750\u4f1a\u5bf9\u7ebf\u5bbd\u7ebf\u95f4\u8ddd\u53ca\u5230\u53c2\u8003\u5c42\u7684\u8ddd\u79bb\u505a\u9002\u5f53\u7684\u8c03\u6574\u3002<\/p>\n

\n\t <\/p>\n

\n\t<\/p>\n

\n\t <\/p>\n

\n\t\u4ee5\u4e0a\u6240\u63cf\u8ff0\u7684\u5e03\u7ebf\u89c4\u5219\u662f\u57fa\u4e8eUSB2.0\u8bbe\u5907\uff0c\u5728USB\u5e03\u7ebf\u8fc7\u7a0b\u4e2d\u628a\u63e1\u5dee\u5206\u7ebf\u8def\u6700\u77ed\u3001\u7d27\u8026\u5408\u3001\u7b49\u957f\u3001\u963b\u6297\u4e00\u81f4\u4e14\u6ce8\u610f\u597dUSB\u7535\u6e90\u7ebf\u7684\u8f7d\u6d41\u80fd\u529b\uff0c\u638c\u63e1\u597d\u4ee5\u4e0a\u539f\u5219USB\u8bbe\u5907\u8fd0\u884c\u57fa\u672c\u6ca1\u95ee\u9898\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

USB\u662f\u4e00\u79cd\u5feb\u901f\u3001\u53cc\u5411\u3001\u540c\u6b65\u4f20\u8f93\u3001\u5ec9\u4ef7\u3001\u65b9\u4fbf\u4f7f\u7528\u7684\u53ef\u70ed\u62d4\u63d2\u7684\u4e32\u884c\u63a5\u53e3\u3002\u7531\u4e8e\u6570\u636e\u4f20\u8f93\u5feb\uff0c\u63a5\u53e3\u65b9\u4fbf\uff0c\u652f\u6301\u70ed\u63d2\u62d4\u7b49\u4f18\u70b9\u4f7fUSB\u8bbe\u5907\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002\u76ee\u524d\uff0c\u5e02\u573a\u4e0a\u4ee5USB2.0\u4e3a\u63a5\u53e3\u7684\u4ea7\u54c1\u5c45<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/1855"}],"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=1855"}],"version-history":[{"count":0,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/1855\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1855"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1855"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1855"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}