{"id":1259,"date":"2018-11-05T15:29:22","date_gmt":"2018-11-05T15:29:22","guid":{"rendered":""},"modified":"2018-11-05T23:31:37","modified_gmt":"2018-11-05T15:31:37","slug":"%e5%bc%80%e5%85%b3%e7%94%b5%e6%ba%90%e5%b7%a5%e4%bd%9c%e8%ae%be%e8%ae%a1%e6%8a%80%e6%9c%af%e8%ae%b2%e8%a7%a3","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1259","title":{"rendered":"\u5f00\u5173\u7535\u6e90\u5de5\u4f5c\u8bbe\u8ba1\u6280\u672f\u8bb2\u89e3"},"content":{"rendered":"

1. <\/span>\u53d8\u538b\u5668\u56fe\u7eb8\u3001PCB\u3001\u539f\u7406\u56fe\u8fd9\u4e09\u8005\u7684\u53d8\u538b\u5668\u98de\u7ebf\u4f4d\u53f7\u9700\u4e00\u81f4\uff0c\u8fd9\u662f\u5b89\u89c4\u8ba4\u8bc1\u8981\u6c42\u3002<\/strong>\u5f88\u591a\u5de5\u7a0b\u5e08\u5728\u7533\u8bf7\u5b89\u89c4\u8ba4\u8bc1\u63d0\u4ea4\u8d44\u6599\u65f6\u4f1a\u72af\u8fd9\u4e2a\u9519\u8bef\u3002<\/span>

\n

\n2. <\/span>X \u7535\u5bb9\u7684\u6cc4\u653e\u7535\u963b\u9700\u653e\u4e24\u7ec4\u3002<\/strong>UL62368\u3001CCC \u8ba4\u8bc1\u8981\u6c42\u65ad\u5f00\u4e00\u7ec4\u7535\u963b\u518d\u6d4b\u8bd5 X \u7535\u5bb9\u7684\u6b8b\u7559\u7535\u538b\u3002<\/span>

\n\u8fd9\u662f\u5f88\u591a\u65b0\u624b\u4f1a\u72af\u7684\u4e00\u4e2a\u9519\u8bef\uff0c\u4fee\u6b63\u53ea\u80fd\u91cd\u65b0\u6539 PCB Layout\uff0c\u6d6a\u8d39\u81ea\u5df1\u548c\u91c7\u8d2d\u6253\u6837\u7684\u65f6\u95f4\u3002<\/span>

\n <\/span><\/span><\/span><\/span><\/p>\n

\n\t <\/span><\/span><\/span><\/span><\/div>\n



\n3. <\/span>\u53d8\u538b\u5668\u98de\u7ebf\u7684 PCB \u5b54\u5f84\u9700\u8003\u8651\u5230\u6700\u5927\u98de\u7ebf\u76f4\u5f84\uff0c\u5fc5\u8981\u65f6\u9884\u7559\u4e24\u7ec4\u4e00\u5927\u4e00\u5c0f\u7684 PCB \u5b54<\/strong>\uff0c\u907f\u514d\u7ec4\u88c5\u56f0\u96be\u6216\u8fc7\u7089\u7a7a\u710a\u95ee\u9898\u3002<\/span>

\n\u5b89\u89c4\u7533\u8bf7\u8ba4\u8bc1\u901a\u5e38\u4f1a\u6709\u4e00\u4e2a\u7cfb\u5217\uff0c\u6bd4\u5982\u8bf4 24W \u7533\u8bf7\u4e00\u4e2a\u7cfb\u5217\uff0c\u5176\u4e2d\u5305\u542b 4.2V-36V \u7535\u538b\u6bb5\uff0c\u8f93\u51fa\u4f4e\u538b4.2V \u5927\u7535\u6d41\u548c\u9ad8\u538b36V \u5c0f\u7535\u6d41\u7684\u98de\u7ebf\u7ebf\u5f84\u662f\u4e0d\u4e00\u6837\u7684\u3002<\/span>

\n\u591a\u6839\u98de\u7ebf\u76f4\u5f84\u8ba1\u7b97\u53c2\u8003\u5982\u4e0b\u8868\u683c\uff1a<\/strong>

\n <\/span><\/span><\/span><\/span><\/span><\/p>\n

\n\t <\/span><\/span><\/span><\/span><\/div>\n



\n4. <\/span>\u8f93\u51fa DC \u7ebf\u6750\u7684 PCB \u5b54\u5f84\u9700\u8003\u8651\u5230\u6700\u5927\u7ebf\u6750\u76f4\u5f84\uff0c\u907f\u514d\u7ec4\u88c5\u56f0\u96be\u3002<\/strong>

\n\u56e0\u4e3a\u4f60\u7684 PCB \u53ef\u80fd\u4f1a\u7528\u5728\u4e0d\u540c\u7535\u6d41\u6bb5\u4e0a\uff0c\u6bd4\u59825V\/8A \u548c 20V\/2A \u4f7f\u7528\u7684\u7ebf\u6750\u662f\u4e0d\u4e00\u6837\u7684\u3002<\/span>

\n

\n\u53c2\u8003\u5982\u4e0b\u8868\u683c\uff1a<\/strong>

\n <\/span><\/span><\/span><\/span><\/span><\/p>\n

\n\t <\/span><\/span><\/span><\/span><\/div>\n



\n5. \u7535\u8def\u8c03\u8bd5\uff0c<\/span>OCP \u9650\u6d41\u7535\u963b\u591a\u4e2a\u5e76\u8054\u7684\u963b\u503c\u8981\u8bbe\u8ba1\u6210\u4e00\u6837<\/strong>\uff0c\u963b\u503c\u8d8a\u5927\u7684\u90a3\u9897\u7535\u963b\u627f\u53d7\u7684\u529f\u7387\u8d8a\u5927\u3002<\/span>

\n <\/span>

\n6. \u7535\u8def\u8bbe\u8ba1\uff0c<\/span>\u6563\u70ed\u7247\u5f15\u811a\u7684\u5b54\u505a\u6210\u957f\u65b9\u5f62\u692d\u5706\u5f62 (\u7ecf\u9a8c\u503c\uff1a2*1mm)<\/strong>\uff0c\u907f\u514d\u7ec4\u88c5\u56f0\u96be\u3002<\/span>

\n\u692d\u5706\u5f62\u7684\u5b54\u65b9\u4fbf\u6563\u70ed\u5668\u6709\u4e2a\u79fb\u52a8\u7684\u7a7a\u95f4\uff0c\u8fd9\u5bf9\u7ec4\u88c5\u548c\u8fc7\u7089\u662f\u975e\u5e38\u6709\u5229\u3002<\/span>

\n

\n7. \u7535\u8def\u8c03\u8bd5\uff0c\u5f02\u5e38\u6d4b\u8bd5\u65f6\uff0c<\/span>\u8f93\u51fa\u7535\u538b\u6216 OVP \u8bbe\u8ba1\u8981\u5c0f\u4e8e 60Vac (Vpk) \/42.4Vdc (Vrms)<\/strong>\uff0c\u8fd9\u662f\u5b89\u89c4\u8981\u6c42\u3002<\/span>

\n\u65b0\u624b\u6bd4\u8f83\u5bb9\u6613\u5ffd\u7565\uff0c\u6240\u4ee5\u7533\u8bf7\u8ba4\u8bc1\u7684\u4ea7\u54c1\u4e00\u5b9a\u8981\u505a OVP \u6d4b\u8bd5\uff0c\u6293\u8f93\u51fa\u77ac\u95f4\u6ce2\u5f62\u3002<\/span>

\n

\n8. \u7535\u8def\u8bbe\u8ba1\uff0c<\/span>\u7535\u89e3\u7535\u5bb9\u7684\u9632\u7206\u5b54\u8ddd\u79bb\u5927\u4e8e2mm\uff0c\u5367\u5f0f\u5f2f\u811a\u75591.5mm<\/strong>\u3002\u4e00\u822c\u6b63\u89c4\u516c\u53f8\u90fd\u6709\u8fd9\u4e2a\u8981\u6c42\uff0c\u9632\u7206\u5b54\u7684\u95ee\u9898\u65e5\u672c\u6bd4\u8f83\u91cd\u89c6\uff0c\u7279\u6b8a\u60c5\u51b5\u9664\u5916\u3002<\/span>

\n

\n9. \u7535\u8def\u8c03\u8bd5\uff0c<\/span>\u8f93\u51fa\u6709 LC \u6ee4\u6ce2\u7684\u7535\u8def\u9700\u8981\u8001\u5316\u786e\u8ba4\u7eb9\u6ce2\uff0c\u5982\u679c\u7eb9\u6ce2\u5f02\u5e38\u8bf7\u8c03\u6574\u73af\u8def<\/strong>\u3002\u8fd9\u4e00\u70b9\u5f88\u91cd\u8981\uff0c\u6211\u4e4b\u524d\u7ecf\u5e38\u78b0\u5230\u8fd9\u4e2a\u95ee\u9898\uff0c\u4ea7\u7ebf\u8001\u5316\u540e\u6d4b\u8bd5\u7eb9\u6ce2\u4f1a\u53d8\u9ad8\uff0c\u73b0\u8c61\u662f\u73af\u8def\u9707\u8361\u3002<\/span>

\n

\n10. \u7535\u8def\u8c03\u8bd5\uff0c\u4e8c\u6781\u7ba1\u5e76\u8054\u65f6,\u5e94\u8be5\u6d4b\u8bd5\u4e00\u9897\u4e8c\u6781\u7ba1\u6545\u969c\u5f00\u8def\u65f6, \u4ea7\u751f\u7684\u5f02\u5e38 (\u5305\u62ec TO-220 \u91cc\u7684\u4e24\u9897\u4e8c\u6781\u7ba1)\u3002\u5c0f\u516c\u53f8\u4e00\u822c\u90fd\u4e0d\u4f1a\u505a\u8fd9\u4e2a\u52a8\u4f5c\u7684\uff0c\u4e00\u6b3e\u4f18\u79c0\u7684\u4ea7\u54c1\u662f\u8981\u7ecf\u5f97\u8d77\u4efb\u4f55\u8003\u9a8c\u7684\u3002<\/span>

\n <\/span>

\n11. \u7535\u8def\u8bbe\u8ba1\uff0c<\/span>\u5982\u679c PCB \u7a7a\u95f4\u5145\u88d5\uff0c\u8bf7\u8bbe\u8ba1\u6210\u901a\u6740\u6240\u6709\u5b89\u89c4\u6807\u51c6\uff0c\u4ee5\u51cf\u5c11 PCB \u4fee\u6539\u6b21\u6570<\/strong>\u3002<\/span>

\n\u5047\u8bbe\u67d0\u4e00\u4ea7\u54c1\u53ea\u7b26\u5408 UL60335\u6807\u51c6\uff0c\u5982\u5ba2\u6237\u5e0c\u671b\u6ee1\u8db3 UL1310\uff0c\u9700\u8981\u4fee\u6539 PCB Layout \u5e76\u62ff\u53bb\u5b89\u89c4\u62a5\u5907\u3002\u5982\u679c\u4e00\u5f00\u59cb\u5373\u7b26\u5408\u5404\u7c7b\u6807\u51c6\uff0c\u540e\u9762\u7684\u5de5\u4f5c\u4f1a\u8f7b\u677e\u5f88\u591a\u3002<\/span>

\n

\n12. \u7535\u8def\u8bbe\u8ba1\uff0c<\/span>ESD \u8bbe\u8ba1\u6210\u63a5\u89e6±8KV\/\u7a7a\u6c14±15KV \u6807\u51c6<\/strong>\uff0c\u51cf\u5c11\u540e\u7eed\u6574\u6539\u6b21\u6570\u3002<\/span>

\n\u50cf\u98de\u5229\u6d66\u8fd9\u6837\u7684\u5ba2\u6237\u5bf9 ESD \u8981\u6c42\u975e\u5e38\u4e25\u7684\uff0c\u542c\u8bf4\u5bcc\u58eb\u5eb7\u7684\u8fd8\u9700\u8981\u8fbe\u5230±20KV\uff0c\u54ea\u5929\u6709\u8fd9\u79cd\u5ba2\u6237\u8981\u6c42\uff0c\u4f60\u53c8\u5f97\u5fd9\u4e00\u6bb5\u65f6\u95f4\u4e86\u3002<\/span>

\n

\n13. \u7535\u8def\u8bbe\u8ba1\uff0c\u8bbe\u8ba1\u53d8\u538b\u5668\u65f6\uff0c<\/span>VCC \u7535\u538b\u5728\u8f7b\u8f7d\u7535\u538b\u8981\u5927\u4e8e IC \u7684\u6b20\u538b\u5173\u65ad\u7535\u538b\u503c<\/strong>\u3002\u5224\u65ad\u7a7a\u8f7d VCC \u7535\u538b\u9700\u5927\u4e8e\u82af\u7247\u5173\u65ad\u7535\u538b\u7684 5V \u5de6\u53f3\uff0c\u540c\u65f6\u786e\u8ba4\u6ee1\u8f7d\u65f6\u4e0d\u80fd\u5927\u4e8e\u82af\u7247\u8fc7\u538b\u4fdd\u62a4\u503c\u3002<\/span>

\n

\n14. \u7535\u8def\u8bbe\u8ba1\uff0c<\/span>\u8bbe\u8ba1\u5171\u7528\u53d8\u538b\u5668\u9700\u8003\u8651\u5230\u4f7f\u7528\u6700\u5927\u8f93\u51fa\u7535\u538b\u65f6\u7684 VCC \u7535\u538b<\/strong>\uff0c\u4f4e\u6e29\u65f6 VCC \u6709\u7a0d\u5fae NOSIE \u4f1a\u78b0\u89e6 OVP \u52a8\u4f5c\u3002<\/span>

\n\u5982\u679c\u4f60\u7684\u4ea7\u54c19V-15V \u662f\u5171\u7528\u4e00\u4e2a\u53d8\u538b\u5668\uff0c\u8bf7\u786e\u8ba4 VCC \u7535\u538b\u548c\u529f\u7387\u7ba1\u8010\u538b\u3002<\/span>

\n

\n15. <\/span>\u7535\u8def\u8c03\u8bd5\uff0cRcs \u4e0e Ccs \u503c\u4e0d\u80fd\u8fc7\u5927\uff0c\u5426\u5219\u4f1a\u9020\u6210 VDS \u8d85\u8fc7\u6700\u5927\u8010\u538b\u70b8\u673a\u3002<\/strong>

\nLEB \u524d\u6cbf\u6d88\u9690\u65f6\u95f4\u8bbe\u77ed\u4e86\uff0c\u6bd4\u5c16\u5cf0\u8109\u51b2\u7684\u65f6\u95f4\u8fd8\u77ed\uff0c\u90a3\u5c31\u6ca1\u6709\u6548\u679c\u4e86\u8fd8\u662f\u4f1a\u8bef\u5224\uff1b\u5982\u679c\u8bbe\u957f\u4e86\uff0c\u771f\u6b63\u7684\u8fc7\u6d41\u6765\u4e86\u8d77\u4e0d\u5230\u4fdd\u62a4\u7684\u4f5c\u7528\u3002<\/span>

\n

\nRcs \u4e0e Ccs \u7684 RC \u503c\u4e0d\u53ef\u8d85\u8fc71NS \u7684 Delay\uff0c\u5426\u5219\u8f93\u51fa\u77ed\u8def\u65f6\uff0cVds \u4f1a\u6bd4\u6ee1\u8f7d\u65f6\u8fd8\u9ad8\uff0c\u8d85\u8fc7 MOSFET \u6700\u5927\u8010\u538b\u5c31\u53ef\u80fd\u9020\u6210\u70b8\u673a\u3002<\/span>

\n

\n\u7ecf\u9a8c\u503c 1nS \u7684 Delay \u7ea6\u7b49\u4e8e1\uff1b<\/span>

\nK \u5bf9100PF\uff0c\u4e5f\u7b49\u4e8e 100R \u5bf9102PF\u3002<\/span>

\n <\/span>

\n16. \u753b\u5c0f\u677f\u65f6\uff0c\u5728\u5c0f\u677f\u5f15\u811a\u768490\u5ea6\u62d0\u89d2\u5904\u589e\u52a0\u4e00\u4e2a\u5706\u5f62\u94bb\u5b54\uff0c\u65b9\u4fbf\u7ec4\u88c5\u3002\u5982\u56fe\uff1a<\/span>

\n <\/span><\/span><\/span><\/span><\/span><\/p>\n

\n\t

\n\t <\/span><\/span><\/span><\/span><\/div>\n
\n\t\u5b9e\u7269\u56fe<\/span><\/span><\/span><\/span><\/span><\/div>\n

 <\/span><\/span><\/span><\/span><\/span><\/p>\n

\n\t <\/span><\/span><\/span><\/span><\/div>\n
\n\t\u5b9e\u9645\u7ec4\u88c5\u56fe<\/span><\/span><\/span><\/span><\/span><\/div>\n

 <\/span>

\n\u8fd9\u6837\u505a\u53ef\u4ee5\u4f7f\u5c0f\u677f\u4e0e PCB \u5927\u677f\u4e4b\u95f4\u7d27\u5bc6\u8d34\u5408\uff0c\u4e0d\u4f1a\u6709\u6d6e\u9ad8\u73b0\u8c61\u3002<\/span>

\n

\n17. \u7535\u8def\u8bbe\u8ba1\uff0c\u8096\u7279\u57fa\u7684\u6563\u70ed\u7247\u53ef\u4ee5\u63a5\u5230\u8f93\u51fa\u6b63\u6781\u7ebf\u8def\uff0c\u8fd9\u6837\u94c1\u5c01\u7684\u8096\u7279\u57fa\u5c31\u4e0d\u7528\u7edd\u7f18\u57ab\u548c\u7edd\u7f18\u7c92\u3002<\/span>

\n

\n18. \u7535\u8def\u8c03\u8bd5\uff0c15W \u4ee5\u4e0a\u529f\u7387\u7684 RCD \u5438\u6536\u4e0d\u8981\u7528 1N4007\uff0c\u56e0\u4e3a 1N4007 \u901f\u5ea6\u6162 300uS\uff0c\u538b\u964d\u4e5f\u59271.3V\uff0c\u8001\u5316\u8fc7\u7a0b\u4e2d\u6e29\u5ea6\u5f88\u9ad8\uff0c\u5bb9\u6613\u5931\u6548\u9020\u6210\u70b8\u673a\u3002<\/span>

\n <\/span>

\n19. \u7535\u8def\u8c03\u8bd5\uff0c\u8f93\u51fa\u6ee4\u6ce2\u7535\u5bb9\u7684\u8010\u538b\u81f4\u5c11\u9700\u7b26\u54081.2\u500d\u4f59\u91cf\uff0c\u907f\u52c9\u91cf\u4ea7\u6709\u635f\u574f\u73b0\u8c61\u3002<\/span>

\n\u4e4b\u524d\u662f\u72af\u4e86\u8fd9\u4e2a\u5f88\u4f4e\u7ea7\u7684\u9519\u8bef\uff0c14.5V \u8f93\u51fa\u752816V \u8010\u538b\u7535\u5bb9\uff0c\u91cf\u4ea7\u67091%\u7684\u7535\u5bb9\u5931\u6548\u4e0d\u826f\u3002<\/span>

\n

\n20. \u7535\u8def\u8bbe\u8ba1\uff0c\u5927\u7535\u5bb9\u6216\u5176\u5b83\u7535\u5bb9\u505a\u6210\u5367\u5f0f\u65f6\uff0c\u5e95\u90e8\u5982\u6709\u8df3\u7ebf\u9700\u653e\u5728\u8d1f\u6781\u7535\u4f4d\uff0c\u8fd9\u6837\u8df3\u7ebf\u53ef\u4ee5\u4e0d\u7528\u7a7f\u5957\u7ba1\uff0c\u8282\u7701\u6210\u672c\u3002<\/span>

\n

\n21. <\/span>\u6574\u6d41\u6865\u5806\u3001\u4e8c\u6781\u7ba1\u6216\u8096\u7279\u57fa\uff0c\u6676\u5143\u5927\u5c0f\u5143\u4ef6\u627f\u8ba4\u4e66\u6216\u5728 BOM \u8868\u8981\u6709\u63cf\u8ff0<\/strong>\uff0c\u598267mil\uff08\u7406\u7531\uff1a\u7ba1\u63a7\u4f9b\u5e94\u5546\u9001\u8d27\u4e00\u81f4\u6027\uff0c\u907f\u514d\u4f9b\u5e94\u5546\u5077\u5de5\u51cf\u6599\uff0c\u5f71\u54cd\u4ea7\u54c1\u6548\u7387\uff09\u3002<\/span>

\n\u4ee4\u4eba\u70e6\u607c\u7684\u5c31\u662f\u4f9b\u5e94\u5546\u505a\u624b\u811a\uff0c\u5bfc\u81f4\u4e00\u6574\u6279\u8bd5\u4ea7\u7684\u4ea7\u54c1\u8fc7\u4e0d\u4e86\u516d\u7ea7\u80fd\u6548\uff0c\u539f\u56e0\u5c31\u662f\u8096\u7279\u57fa\u5185\u90e8\u6676\u5143\u7528\u5c0f\u5bfc\u81f4\u3002<\/span>

\n

\n22. \u7535\u8def\u8bbe\u8ba1\uff0cSnubber \u7535\u5bb9\uff0c\u56e0\u4e3a\u6709\u5f02\u97f3\u95ee\u9898\uff0c\u4f18\u5148\u4f7f\u7528 Mylar \u7535\u5bb9\uff0c\u8fd9\u662f\u5904\u7406\u5f02\u97f3\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002<\/span>

\n <\/span>

\n23. \u7535\u8def\u8bbe\u8ba1\uff0c<\/span>\u542f\u52a8\u7535\u963b\u5982\u679c\u4f7f\u7528\u5728\u6574\u6d41\u524d\uff0c\u8981\u52a0\u4e32\u4e00\u9897\u51e0\u767e K \u7684\u7535\u963b<\/strong>\u3002\u7535\u963b\u77ed\u8def\u65f6,\u4e0d\u4f1a\u9020\u6210 IC \u548c MOSFET \u635f\u574f\u3002<\/span>

\n <\/span><\/span><\/span><\/span><\/span><\/p>\n

\n\t <\/span><\/span><\/span><\/span><\/div>\n
\n\t\u7535\u8def\u56fe<\/span><\/span><\/span><\/span><\/span><\/div>\n



\n24. \u7535\u8def\u8bbe\u8ba1\uff0c<\/span>\u9ad8\u538b\u5927\u7535\u5bb9\u5e76\u4e00\u9897103P \u74f7\u7247\u7535\u5bb9\u4f4d\u7f6e<\/strong>\uff0c\u7406\u7531\uff1a\u5bf9\u8f90\u5c0430-60MHz \u90fd\u6709\u4e00\u5b9a\u7684\u4f5c\u7528\u3002\u7a7a\u95f4\u5141\u8bb8\u7684\u8bdd\uff0c\u53ef\u4ee5\u7ed9 PCB Layout \u7559\u4e00\u4e2a\u4f4d\u7f6e\uff0c\u65b9\u4fbf EMI \u6574\u6539\u3002<\/span>

\n

\n25. \u5728\u8fdb\u884c EMS \u9879\u76ee\u6d4b\u8bd5\u65f6\uff0c<\/span>\u9700\u6d4b\u8bd5\u51fa\u4ea7\u54c1\u7684\u6700\u5927\u7a0b\u5e8f\uff0c\u76f4\u5230\u4ea7\u54c1\u635f\u574f\u4e3a\u6b62<\/strong>\u3002<\/span>

\n\u4f8b\u5982 ESD \u96f7\u51fb\u7b49\uff0c\u4e00\u5b9a\u8981\u6253\u5230\u4ea7\u54c1\u635f\u574f\u4e3a\u6b62\uff0c\u5e76\u505a\u597d\u76f8\u5173\u8bb0\u5f55\uff0c\u770b\u4ea7\u54c1\u4f59\u91cf\u6709\u591a\u5c11\uff0c\u505a\u5230\u5fc3\u4e2d\u6709\u6570\u3002<\/span>

\n

\n26. \u7535\u8def\u8bbe\u8ba1\uff0c\u5f02\u5e38\u6d4b\u8bd5\u65f6\uff0c\u77ed\u8def\u5f00\u8def\u67d0\u4e2a\u5143\u4ef6\u5982\u679c\u8fd8\u6709\u8f93\u51fa\u7535\u538b\u5219\u8981\u8fdb\u884c LPS \u6d4b\u8bd5\uff0c\u8fc7\u6d41\u70b9\u4e0d\u80fd\u8d85\u8fc78A\uff08\u8d85\u8fc7 8A \u662f\u4e0d\u80fd\u7533\u8bf7 LPS\uff09\u3002<\/span>

\n <\/span>

\n27. \u5b89\u89c4\u5f00\u58f3\u6837\u673a\uff0c\u6240\u6709\u53ef\u9009\u63d2\u4ef6\u5143\u4ef6\u8981\u88c5\u4e0a\u4f9b\u62cd\u7167\u7528\uff0cL\u3001N \u7ebf\u548c DC \u7ebf\u4e0e PCB \u8981\u70b9\u767d\u80f6\u56fa\u5b9a\u3002<\/span>

\n\u8fd9\u4e2a\u662f\u7ecf\u5e38\u72af\u7684\u4e00\u4e2a\u6bdb\u75c5\uff0c\u7ecf\u5e38\u4e00\u80a1\u52b2\u7684\u628a\u6837\u54c1\u9001\u5230\u7b2c\u4e09\u65b9\u673a\u6784\uff0c\u540e\u9762\u6765\u6765\u56de\u56de\u6539\u6765\u6539\u53bb\u7684\u3002<\/span>

\n <\/span>

\n28. \u7535\u8def\u8c03\u8bd5\uff0c<\/span>\u51b7\u673a\u65f6 PSR \u97001.15\u500d\u7535\u6d41\u80fd\u5f00\u673a\uff0cSSR \u97001.3\u500d\u7535\u6d41\u80fd\u5f00\u673a\uff0c\u907f\u514d\u8001\u5316\u540e\u542f\u52a8\u4e0d\u826f\u3002<\/strong>PSR \u73b0\u5728\u5f88\u591a\u82af\u7247\u90fd\u53ef\u4ee5\u5b9e\u73b0 “\u96f6\u6062\u590d” OCP \u7535\u6d41\uff0c\u6bd4\u5982 ME8327N\uff0c\u5177\u6709 “\u96f6\u6062\u590d” OCP \u7535\u6d41\u529f\u80fd\u3002<\/span>

\n

\n29. \u7535\u8def\u8bbe\u8ba1\uff0c\u8bf7\u6ce8\u610f<\/span>\u4f7f\u7528\u7684 Y \u7535\u5bb9\u603b\u5bb9\u91cf,\u4e0d\u80fd\u8d85\u8fc7222P,<\/strong> \u56e0\u4e3a\u6709\u6f0f\u7535\u6d41\u7684\u5f71\u54cd\u3002\u9488\u5bf9\u4e0d\u540c\u5b89\u89c4\uff0c\u6f0f\u7535\u6d41\u8981\u6c42\u4e5f\u4e0d\u4e00\u6837\uff0c\u5728\u8bbe\u8ba1\u65f6\u9700\u7279\u522b\u7559\u610f\u3002<\/span>

\n

\n30. \u53cd\u6fc0\u62d3\u8865\u7ed3\u6784\uff0c\u53d8\u538b\u5668 B \u503c\u9700\u5c0f\u4e8e3500\u9ad8\u65af\uff0c\u5982\u679c\u53d8\u538b\u5668\u9971\u548c\u4e00\u5207\u52a8\u4f5c\u5c06\u4f1a\u5931\u63a7\uff0c\u5982\u4e0b\u5de6\u56fe\u4e3a\u6b63\u5e38\uff0c\u53f3\u56fe\u4e3a\u9971\u548c\u3002<\/span>

\n  <\/span><\/span><\/span><\/span><\/span><\/p>\n

\n\t <\/span><\/span><\/span><\/span><\/div>\n



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