{"id":2210,"date":"2019-03-12T02:25:17","date_gmt":"2019-03-12T02:25:17","guid":{"rendered":""},"modified":"2019-03-12T10:25:47","modified_gmt":"2019-03-12T02:25:47","slug":"%e4%b8%89%e7%a7%8d%e5%b8%b8%e7%94%a8%e7%b1%bb%e5%9e%8b%e7%9a%84rs-485%e7%ab%af%e5%8f%a3%e7%9a%84emc%e8%ae%be%e8%ae%a1%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=2210","title":{"rendered":"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848"},"content":{"rendered":"

\n\t\u5728\u5b9e\u9645\u7684\u5de5\u4e1a\u3001\u7535\u529b\u3001\u81ea\u52a8\u5316\u53ca\u4eea\u5668\u4eea\u8868\u5e94\u7528\u4e2d\uff0cRS-485<\/u>\u603b\u7ebf\u6807\u51c6\u662f\u4f7f\u7528\u6700\u5e7f\u6cdb\u7684\u7269\u7406\u5c42\u603b\u7ebf\u8bbe\u8ba1\u6807\u51c6\u4e4b\u4e00\uff0c\u7531\u4e8e\u5176\u4f1a\u5728\u6076\u52a3\u7535\u78c1\u73af\u5883\u4e0b\u5de5\u4f5c\uff0c\u4e3a\u4e86\u786e\u4fdd\u8fd9\u4e9b\u6570\u636e\u7aef\u53e3\u80fd\u591f\u5728\u6700\u7ec8\u5b89\u88c5\u73af\u5883\u4e2d\u6b63\u5e38\u5de5\u4f5c\uff0c\u5b83\u4eec\u5fc5\u987b\u7b26\u5408\u76f8\u5173\u7684\u7535\u78c1\u517c\u5bb9\u6027(EMC<\/u>)\u6cd5\u89c4\u3002\u5728\u672c\u6587\u4e2d\uff0c\u4e16\u5065\u516c\u53f8\u7ed3\u5408\u4f18\u52bf\u7684\u4ee3\u7406\u7ebfADI<\/u>\uff08 RS<\/u>-485\u82af\u7247\uff09\u3001Bourns<\/u>\uff08\u5728\u7aef\u53e3EMC\u9632\u62a4\u65b9\u9762\u7684\u5668\u4ef6\uff09\uff0c\u4ece\u539f\u7406\u5206\u6790\u5230\u5b9e\u6d4b\u6765\u4e3a\u5927\u5bb6\u5e26\u6765\u8be6\u7ec6\u7684RS485\u7684\u7aef\u53e3\u9632\u62a4\u5206\u6790\u3002<\/p>\n

\n\t\u5728RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u91cd\u70b9\u8003\u8651\u4e09\u4e2a\u56e0\u7d20\uff1a\u9759\u7535\u653e\u7535(ESD)\u3001\u7535\u5feb\u901f\u77ac\u53d8(EFT)\u548c\u6d6a\u6d8c\uff08Surge\uff09\u3002\u56fd\u9645\u7535\u5de5\u59d4\u5458\u4f1a(IEC)\u89c4\u8303\u5b9a\u4e49\u4e86\u4e00\u7ec4EMC\u6297\u6270\u5ea6\u8981\u6c42\uff0c\u8fd9\u7ec4\u89c4\u8303\u5305\u62ec\u4ee5\u4e0b\u4e09\u79cd\u7c7b\u578b\u7684\u9ad8\u7535\u538b\u77ac\u53d8\uff0c\u8bbe\u8ba1\u4eba\u5458\u9700\u8981\u786e\u4fdd\u6570\u636e\u901a\u4fe1<\/u>\u7ebf\u8def\u4e0d\u53d7\u8fd9\u4e9b\u77ac\u53d8\u7684\u635f\u5bb3\u3002\u8fd9\u4e09\u79cd\u7c7b\u578b\u5206\u522b\u662f:<\/p>\n

\n\t <\/div>\n

\n\t· IEC 61000-4-2\u9759\u7535\u653e\u7535(ESD)<\/p>\n

\n\t· IEC 61000-4-4\u7535\u5feb\u901f\u77ac\u53d8(EFT)<\/p>\n

\n\t· IEC 61000-4-5\u6d6a\u6d8c\u6297\u6270\u5ea6\uff08Surge\uff09<\/p>\n

\n\tExcelpoint\u4e16\u5065\u516c\u53f8\u6280\u672f\u652f\u6301\u90e8\u526f\u603b\u76d1Angus Zhao\u8bf4\uff1a“RS-485\u7aef\u53e3\u7684\u4fdd\u62a4\u65b9\u6848\u5c31\u662f\u8981\u8bbe\u6cd5\u53bb\u6ee1\u8db3ESD\u3001EFT\u3001Surge\u8fd9\u4e09\u79cd\u89c4\u8303\u7684\u8981\u6c42\u3002\u6240\u4ee5\u60f3\u8981\u8bbe\u8ba1\u51fa\u5408\u89c4\u7684RS-485\u7aef\u53e3EMC\u65b9\u6848\uff0c\u9996\u5148\u5c31\u8981\u900f\u5f7b\u4e86\u89e3\u8fd9\u4e09\u4e2a\u89c4\u8303\u3002”\u56fd\u5185\u9488\u5bf9IEC\u6807\u51c6\u4e5f\u6709\u540c\u6837\u7684\u7b49\u540c\u6807\u51c6\u53ef\u4ee5\u53c2\u8003\uff0c\u6bd4\u5982\u5728\u7535\u529b\u53ca\u8f93\u914d\u7535\u5e94\u7528\u4e2d\uff0c\u5f88\u591a\u91c7\u7528\u4e86GB\/T17626.2 ESD, GB\/T17626.4 EFT, GB\/T17626.5 Surge\u7684\u5bf9\u5e94\u6807\u51c6\u89c4\u8303\uff0c\u672c\u6587\u4ee5IEC\u6807\u51c6\u4e3a\u4f8b\u8bf4\u660e\u3002<\/p>\n

\n\t\u9759\u7535\u653e\u7535<\/p>\n

\n\t\u9759\u7535\u653e\u7535\uff08ESD\uff09\u662f\u6307\u4e24\u4e2a\u7535\u4f4d\u4e0d\u540c\u7684\u5e26\u7535\u4f53\u4e4b\u95f4\u56e0\u4e3a\u8fd1\u63a5\u89e6\u6216\u7535\u573a\u7684\u4f20\u5bfc\u800c\u7a81\u7136\u4ea7\u751f\u9759\u7535\u7535\u8377\u7684\u4f20\u8f93\u3002\u5176\u7279\u6027\u662f\u5728\u8f83\u77ed\u7684\u65f6\u95f4\u5185\u6709\u8f83\u5927\u7684\u7535\u6d41<\/u>\u3002IEC 61000-4-2\u6d4b\u8bd5\u7684\u4e3b\u8981\u76ee\uff0c\u5c31\u662f\u786e\u5b9a\u7cfb\u7edf\u5728\u5de5\u4f5c\u8fc7\u7a0b\u4e2d\u5bf9\u7cfb\u7edf\u5916\u90e8ESD\u4e8b\u4ef6\u7684\u6297\u6270\u5ea6\u3002IEC 61000-4-2\u89c4\u5b9a\u4e86\u4e0d\u540c\u73af\u5883\u72b6\u51b5\u4e0b\u7684\u7535\u538b\u6d4b\u8bd5\u7ea7\u522b\uff0c\u5171\u52064\u4e2a\u7ea7\u522b\u30021\u7ea7\u6700\u8f7b\u5fae\uff0c4\u7ea7\u6700\u4e25\u91cd\u30021\u7ea7\u548c2\u7ea7\u9002\u5408\u62e5\u6709\u9632\u9759\u7535\u6750\u6599\u7684 \u53d7\u63a7\u73af\u5883\u4e2d\u5b89\u88c5\u7684\u4ea7\u54c1\u30023\u7ea7\u548c4\u7ea7\u9002\u5408\u60c5\u51b5\u66f4\u4e25\u91cd\u7684\u73af\u5883\u4e2d\u5b89\u88c5\u7684\u4ea7\u54c1\uff0c\u8fd9\u7c7b\u73af\u5883\u4e0b\u66f4\u5e38\u53d1\u751f\u5e26\u6709\u8f83\u9ad8\u7535\u538b\u7684ESD\u4e8b\u4ef6\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe1:ESD \u7279\u6027\u66f2\u7ebf<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe2:IEC 61000-4-2 ESD\u6d4b\u8bd5\u7ea7\u522b\u548c\u5b89\u88c5\u7c7b\u522b<\/p>\n

\n\t\u7535\u5feb\u901f\u77ac\u53d8\uff08\u8109\u51b2\u7fa4\uff09<\/p>\n

\n\t\u7535\u5feb\u901f\u77ac\u53d8\uff08EFT\uff09\u6d4b\u8bd5\u7684\u662f\uff0c\u5c06\u5927\u91cf\u6781\u5feb\u7684\u77ac\u53d8\u8109\u51b2\u8026\u5408<\/u>\u5230\u4fe1\u53f7\u7ebf\u4e0a\uff0c\u7cfb\u7edf\u4e0e\u5916\u90e8\u5f00\u5173\u7535\u8def<\/u>\u5173\u8054\u7684\u77ac\u53d8\u5e72\u6270\uff0c\u8fd9\u7c7b\u7535\u8def\u80fd\u591f\u4ee5\u5bb9\u6027\u65b9\u5f0f\u8026\u5408\u81f3\u901a\u4fe1\u7aef\u53e3\u3002EFT\u7684\u7f20\u4e0a\u5305\u62ec\u7ee7\u7535\u5668<\/u>\u548c\u5f00\u5173\u89e6\u70b9\u6296\u52a8\uff0c\u6216\u8005\u56e0\u4e3a\u611f\u6027\u6216\u5bb9\u6027\u8d1f\u8f7d\u5207\u6362\u800c\u4ea7\u751f\u7684\u77ac\u53d8\uff0c \u800c\u6240\u6709\u8fd9\u4e9b\u5728\u5de5\u4e1a\u73af\u5883\u4e2d\u90fd\u5f88\u5e38\u89c1\u3002EC 61000-4-4\u4e2d\u5b9a\u4e49\u7684 EFT\u6d4b\u8bd5\uff0c\u5c31\u662f\u53bb\u6a21\u62df\u8fd9\u4e9b\u4e8b\u4ef6\u4ea7\u751f\u7684\u5e72\u6270\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe3\uff1aEFT\u7279\u6027\u66f2\u7ebf<\/p>\n

\n\tIEC 61000-4-4\u89c4\u5b9a\u4e86\u4e0d\u540c\u73af\u5883\u72b6\u51b5\u4e0b\u7684\u7535\u538b\u6d4b\u8bd5\u7ea7\u522b\uff0c\u5206\u4e3a4\u7ea7\u3002\u540c\u65f6\u89c4\u5b9a\u4e86\u4e0d\u540c\u6d4b\u8bd5\u7ea7\u522b\u5bf9\u5e94\u7684\u6d4b\u8bd5\u7535\u538b\u548c\u8109\u51b2\u91cd\u590d\u901f\u7387\u3002<\/p>\n

\n\t· 1\u7ea7 \u8868\u793a\u4fdd\u62a4\u63aa\u65bd\u5f88\u597d\u7684\u73af\u5883<\/p>\n

\n\t· 2\u7ea7 \u8868\u793a\u53d7\u4fdd\u62a4\u7684\u73af\u5883<\/p>\n

\n\t· 3\u7ea7 \u8868\u793a\u5178\u578b\u7684\u5de5\u4e1a\u73af\u5883<\/p>\n

\n\t· 4\u7ea7 \u8868\u793a\u6076\u52a3\u7684\u5de5\u4e1a\u73af\u5883<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe4\uff1aIEC 61000-4-4 EFT \u6d4b\u8bd5\u7ea7\u522b<\/p>\n

\n\t\u6d6a\u6d8c\uff08Surge\uff09<\/p>\n

\n\t\u6d6a\u6d8c\u901a\u5e38\u7531\u5f00\u5173\u64cd\u4f5c\u9020\u6210\u7684\u8fc7\u538b\u60c5\u51b5\u6216\u96f7\u51fb\u9020\u6210\u3002\u5f00\u5173\u77ac\u53d8\u7684\u8d77\u56e0\u53ef\u80fd\u662f\u7535\u529b\u7cfb\u7edf\u5207\u6362\u3001\u914d\u7535\u7cfb\u7edf\u4e2d\u7684\u8d1f\u8f7d\u53d8\u5316\u6216\u5404\u79cd\u7cfb\u7edf\u6545\u969c\u3002\u96f7\u51fb\u77ac\u53d8\u7684\u8d77\u56e0\u53ef\u80fd\u662f\u9644\u8fd1\u7684\u96f7\u51fb\u5bfc\u81f4\u5411\u7535\u8def\u4e2d\u6ce8\u5165\u4e86\u8f83\u5927\u7684\u7535\u6d41\u548c\u7535\u538b\u3002IEC 61000-4-5\u5b9a\u4e49\u4e86\u5728\u5bb9\u6613\u53d7\u5230\u8fd9\u4e9b\u6d6a\u6d8c\u73b0\u8c61\u5f71\u54cd\u7684\u60c5\u51b5\u4e0b\u7528\u4e8e\u8bc4\u4f30\u7535\u5b50\u7535\u6c14\u8bbe\u5907\u6297\u6270\u5ea6\u7684\u6ce2\u5f62\u3001\u6d4b\u8bd5\u65b9\u6cd5\u548c\u6d4b\u8bd5\u7ea7\u522b\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe5\uff1aSurge\u7279\u6027\u66f2\u7ebf<\/p>\n

\n\t\u6d6a\u6d8c\u7684\u80fd\u91cf\u7ea7\u522b\u53ef\u4ee5\u8fbe\u5230ESD\u6216EFT\u8109\u51b2\u80fd\u91cf\u7ea7\u522b\u7684\u4e09\u5230\u56db\u4e2a\u6570\u91cf\u7ea7\u3002\u56e0\u6b64\uff0c\u6d6a\u6d8c\u53ef\u4ee5\u89c6\u4f5c\u662fEMC\u77ac\u53d8\u89c4\u8303\u4e2d\u6700\u4e25\u91cd\u7684\u4e00\u79cd\u3002 \u7531\u4e8eESD\u548cEFT\u4e4b\u95f4\u7684\u76f8\u4f3c\u6027\uff0c\u76f8\u5e94\u7684\u7535\u8def\u4fdd\u62a4\u8bbe\u8ba1\u4e5f\u5f88\u76f8\u4f3c\uff0c\u4f46\u662f\u7531\u4e8e\u6d6a\u6d8c\u7684\u80fd\u91cf\u5927\uff0c\u56e0\u6b64\u5fc5\u987b\u91c7\u53d6\u4e0d\u540c\u7684\u5904\u7406\u65b9\u5f0f\u3002<\/p>\n

\n\tExcelpoint\u4e16\u5065\u516c\u53f8\u6280\u672f\u652f\u6301\u90e8\u526f\u603b\u76d1Angus Zhao\u8bf4\uff1a“\u5f00\u53d1EMC\u4fdd\u62a4\u7535\u8def<\/u>\u7684\u8fc7\u7a0b\uff0c\u5c31\u662f\u8981\u6839\u636e\u5b9e\u9645\u5e94\u7528\u7684\u573a\u666f\uff0c\u8fbe\u5230\u76f8\u5e94\u7684\u4e0a\u8ff0\u4e09\u79cd\u77ac\u53d8\u7684\u6297\u6270\u5ea6\u7684\u89c4\u8303\u8981\u6c42\uff0c\u540c\u65f6\u53c8\u8981\u4fdd\u8bc1\u6210\u672c\u6548\u76ca\u3002\u8fd9\u770b\u4f3c\u590d\u6742\u7684\u5de5\u4f5c\uff0c\u5b9e\u9645\u4e0a\u6709\u5b83\u81ea\u5df1\u7684\u539f\u5219\u548c\u5957\u8def\u53ef\u5faa\u3002”<\/p>\n

\n\tRS-485\u7aef\u53e3EMC\u65b9\u6848\u76f8\u5e94\u7684\u89c4\u8303\u8981\u6c42\u5b9e\u9645\u4e0a\u5c31\u662f\u4fdd\u62a4\u7535\u8def\u8bbe\u8ba1\u9700\u8981\u8fbe\u5230\u7684\u76ee\u6807\u3002\u4e3a\u4e86\u8fbe\u6210\u8fd9\u6837\u7684\u76ee\u6807\uff0c\u81ea\u6709\u5176\u8bbe\u8ba1\u539f\u5219\uff1a<\/p>\n

\n\t\u9488\u5bf9\u77ac\u53d8\u63d0\u4f9b\u4fdd\u62a4\uff0c\u4e3b\u8981\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a\u8fc7\u6d41\u4fdd\u62a4\u7528\u4e8e\u9650\u5236\u5cf0\u503c\u7535\u6d41\uff1b\u8fc7\u538b\u4fdd\u62a4\u7528\u4e8e\u9650\u5236\u5cf0\u503c\u7535\u538b\u3002\u5178\u578b\u7684\u4fdd\u62a4\u65b9\u6848\u8bbe\u8ba1\u5305\u62ec\u4e3b\u4fdd\u62a4\u548c\u6b21\u7ea7\u4fdd\u62a4\u3002\u4e3b\u4fdd\u62a4\u53ef\u5c06\u5927\u90e8\u5206\u77ac\u53d8\u80fd\u91cf\u4ece\u7cfb\u7edf\u8f6c\u79fb\u5f00\uff0c\u901a\u5e38\u4f4d\u4e8e\u7cfb\u7edf\u548c\u73af\u5883\u4e4b\u95f4\u7684\u63a5\u53e3\uff0c\u5b83\u80fd\u591f\u5c06\u77ac\u53d8\u8f6c\u79fb\u5230\u5927\u5730\uff0c\u4ece\u800c\u79fb\u8d70\u7edd\u5927\u90e8\u5206\u7684\u80fd\u91cf\u3002\u6b21\u7ea7\u4fdd\u62a4\u7684\u76ee\u7684\u662f\u4fdd\u62a4\u7cfb\u7edf\u5404\u4e2a\u90e8\u4ef6\uff0c\u4f7f\u5176\u514d\u53d7\u4e3b\u4fdd\u62a4\u5141\u8bb8\u901a\u8fc7\u7684\u4efb\u4f55\u77ac\u53d8\u7535\u538b\u548c\u7535\u6d41\u7684\u635f\u574f\u3002\u6b21\u7ea7\u4fdd\u62a4\u901a\u5e38\u66f4\u4fa7\u91cd\u4e8e\u9762\u5411\u53d7\u4fdd\u62a4\u7cfb\u7edf\u7684\u5177\u4f53\u90e8\u4ef6\u3002\u5b83\u7ecf\u8fc7\u4f18\u5316\uff0c\u53ef\u4ee5\u786e\u4fdd\u9488\u5bf9\u4e0a\u8ff0\u6b8b\u4f59\u77ac\u53d8\u63d0\u4f9b\u4fdd\u62a4\uff0c\u540c\u65f6\u8fd8\u5141\u8bb8\u7cfb\u7edf\u7684\u8fd9\u4e9b\u654f\u611f\u90e8\u4ef6\u6b63\u5e38\u5de5\u4f5c\u3002Excelpoint\u4e16\u5065\u6280\u672f\u652f\u6301\u90e8\u526f\u603b\u76d1Angus Zhao\u8bf4\uff1a“\u8fd9\u4e24\u79cd\u65b9\u5f0f\u5fc5\u987b\u786e\u4fdd\u4e3b\u8bbe\u8ba1\u548c\u6b21\u7ea7\u8bbe\u8ba1\u80fd\u591f\u4e00\u8d77\u914d\u5408\u7cfb\u7edf\u8f93\u5165\/\u8f93\u51fa\uff0c\u4ee5\u4fbf\u6700\u5927\u9650\u5ea6\u5730\u964d\u4f4e\u5bf9\u53d7\u4fdd\u62a4\u7535\u8def\u9020\u6210\u7684\u5e94\u529b\u3002\u540c\u65f6\u5728\u8bbe\u8ba1\u4e2d\uff0c\u4e00\u822c\u5728\u4e3b\u4fdd\u62a4\u5668\u4ef6\u548c\u6b21\u7ea7\u4fdd\u62a4\u5668\u4ef6\u4e4b\u95f4\u4f1a\u6709\u4e00\u4e2a\u534f\u8c03\u5143\u4ef6\uff0c\u4f8b\u5982\u7535\u963b<\/u>\u6216\u975e\u7ebf\u6027\u8fc7\u6d41\u4fdd\u62a4\u5668\u4ef6\uff0c\u4ee5\u786e\u4fdd\u80fd\u591f\u8fdb\u884c\u534f\u8c03\u3002”<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe6\uff1a\u4f20\u7edf\u7684EMC\u9632\u62a4\u89e3\u51b3\u65b9\u6848\u67b6\u6784<\/p>\n

\n\t\u6309\u7167\u4ee5\u4e0a\u7684\u89c4\u8303\u8981\u6c42\u548c\u8bbe\u8ba1\u539f\u5219\uff0c\u4e0b\u9762\u6211\u4eec\u63d0\u4f9b\u4e09\u79cd\u4e0d\u540c\u7ea7\u522b\u7684EMC\u9632\u62a4\u89e3\u51b3\u65b9\u6848\uff0c\u8fd9\u4e9b\u65b9\u6848\u90fd\u5df2\u7ecf\u7ecf\u8fc7\u4e86\u7b2c\u4e09\u65b9\u72ec\u7acbEMC\u517c\u5bb9\u6027\u6d4b\u8bd5\u7684\u8ba4\u8bc1\u3002\u65b9\u6848\u4e2d\u7528\u5230\u7684\u5143\u5668\u4ef6\u5305\u62ec\uff1a<\/p>\n

\n\t·ADM3485EARZ 3.3 V RS-485\u6536\u53d1\u5668<\/u>\uff08ADI\uff09<\/p>\n

\n\t·TVS\u77ac\u53d8\u7535\u538b\u6291\u5236\u5668CDSOT23-SM712 (Bourns)<\/p>\n

\n\t·TBU\u77ac\u53d8\u95ed\u9501<\/u>\u5355\u5143TBU-CA065-200-WH (Bourns)<\/p>\n

\n\t·TI<\/u>ST\u6676\u95f8\u7ba1<\/u>\u6d6a\u6d8c\u4fdd\u62a4\u5668TISP4240M3BJR-S (Bourns)<\/p>\n

\n\t·GDT\u6c14\u4f53\u653e\u7535\u7ba12038-15-SM-RPLF (Bourns)<\/p>\n

\n\t\u65b9\u6848\u4e00<\/p>\n

\n\tEFT\u548cESD\u77ac\u53d8\u7684\u80fd\u91cf\u7ea7\u522b\u7c7b\u4f3c\uff0c\u6d6a\u6d8c\u6ce2\u5f62\u7684\u80fd\u91cf\u7ea7\u522b\u5219\u9ad8\u51fa\u4e09\u5230\u56db\u4e2a\u6570\u91cf\u7ea7\u3002\u9488\u5bf9ESD\u548cEFT\u7684\u4fdd\u62a4\u53ef\u901a\u8fc7\u76f8\u4f3c\u7684\u65b9\u5f0f\u5b8c\u6210\uff0c\u9488\u5bf9\u9ad8\u7ea7\u522b\u6d6a\u6d8c\u7684\u4fdd\u62a4\u89e3\u51b3\u65b9\u6848\u5219\u66f4\u4e3a\u590d\u6742\u3002\u7b2c\u4e00\u4e2a\u89e3\u51b3\u65b9\u6848\u63d0\u4f9b\u56db\u7ea7ESD\u548cEFT\u548c\u4e8c\u7ea7\u6d6a\u6d8c\u4fdd\u62a4\u3002<\/p>\n

\n\t\u6b64\u89e3\u51b3\u65b9\u6848\u4f7f\u7528Bourns\u516c\u53f8\u7684CDSOT23-SM712 TVS\u9635\u5217\uff0c\u5b83\u5305\u62ec\u4e24\u4e2a\u53cc\u5411TVS\u4e8c\u6781\u7ba1<\/u>\u3002TVS\u662f\u57fa\u4e8e\u7845\u7684\u5668\u4ef6\u3002\u5728\u6b63\u5e38\u5de5\u4f5c\u6761\u4ef6\u4e0b\uff0cTVS\u5177\u6709\u5f88\u9ad8\u7684\u5bf9\u5730\u963b\u6297\uff1b\u7406\u60f3\u60c5\u51b5\u4e0b\u5b83\u662f\u5f00\u8def\u7684\u3002\u4fdd\u62a4\u65b9\u6cd5\u662f\u5c06\u77ac\u53d8\u5bfc\u81f4\u7684\u8fc7\u538b\u7b9d\u4f4d\u5230\u7535\u538b\u9650\u503c\u3002\u8fd9\u662f\u901aPN\u7ed3<\/u>\u7684\u4f4e\u963b\u6297\u96ea\u5d29\u51fb\u7a7f\u5b9e\u73b0\u7684\u3002\u5f53\u4ea7\u751f\u5927\u4e8eTVS\u7684\u51fb\u7a7f\u7535\u538b\u7684\u77ac\u53d8\u7535\u538b\u65f6\uff0c TVS\u4f1a\u5c06\u77ac\u53d8\u7b9d\u4f4d\u5230\u5c0f\u4e8e\u4fdd\u62a4\u5668\u4ef6\u7684\u51fb\u7a7f\u7535\u538b\u7684\u9884\u5b9a\u6c34\u5e73\uff0c\u53ea\u9700< 1 ns\uff0c\u77ac\u53d8\u7535\u6d41\u5373\u53ef\u4ece\u53d7\u4fdd\u62a4\u5668\u4ef6\u8f6c\u79fb\u81f3\u5730\u3002<\/p>\n

\n\t\u91cd\u8981\u7684\u662f\u8981\u786e\u4fddTVS\u7684\u51fb\u7a7f\u7535\u538b\u5728\u53d7\u4fdd\u62a4\u5f15\u811a\u7684\u6b63\u5e38\u5de5\u4f5c\u8303\u56f4\u4e4b\u5916\u3002CDSOT23-SM712\u7684\u72ec\u6709\u7279\u6027\u662f\u5177\u6709+13.3 V\u548c–7.5 V\u7684\u975e\u5bf9\u79f0\u51fb\u7a7f\u7535\u538b\uff0c\u4e0eRS-485\u82af\u7247ADM3485E\u7684+12 V\u81f3–7 V\u7684\u6536\u53d1\u5668\u5171\u6a21\u8303\u56f4\u76f8\u5339\u914d\uff0c\u4ece\u800c\u63d0\u4f9b\u6700\u4f73\u4fdd\u62a4\uff0c\u540c\u65f6\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c0f\u5bf9RS-485\u6536\u53d1\u5668\u7684\u8fc7\u538b\u5e94\u529b\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe7\uff1aCDSOT23-SM712 TVS\u7279\u6027\u66f2\u7ebf<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe8\uff1a\u57fa\u4e8eTVS\u9635\u5217\u7684\u4fdd\u62a4\u65b9\u6848<\/p>\n

\n\t\u65b9\u6848\u4e8c<\/p>\n

\n\t\u5982\u679c\u8981\u63d0\u9ad8\u6d6a\u6d8c\u4fdd\u62a4\u7ea7\u522b\uff0c\u4fdd\u62a4\u7535\u8def\u53d8\u5c06\u5f97\u66f4\u52a0\u590d\u6742\uff0c\u5728\u65b9\u6848\u4e8c\u4e2d\uff0c\u6211\u4eec\u5c06\u6d6a\u6d8c\u4fdd\u62a4\u63d0\u9ad8\u5230\u56db\u7ea7\u3002<\/p>\n

\n\t\u5728\u8fd9\u4e2a\u65b9\u6848\u4e2d\uff0c\u7531TVS\uff08CDSOT23-SM712\uff09\u63d0\u4f9b\u6b21\u7ea7\u4fdd\u62a4\uff0c TISP\uff08TISP4240M3BJR-S\uff09\u5219\u63d0\u4f9b\u4e3b\u4fdd\u62a4\uff0c\u4e3b\u4fdd\u62a4\u5668\u4ef6\u548c\u6b21\u7ea7\u4fdd\u62a4\u5668\u4ef6\u4e4b\u95f4\u7684\u534f\u8c03\u4ee5\u53ca\u8fc7\u6d41\u4fdd\u62a4\u662f\u5229\u7528Bourns\u4e13\u5229\u6280\u672f\u7684\u8fc7\u6d41\u4fdd\u62a4\u5668\u4ef6TBU\uff08TBU-CA065-200-WH\uff09\u5b9e\u73b0\u7684\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe9\uff1aTBU\u7684\u7279\u6027\u66f2\u7ebf<\/p>\n

\n\t\u5f53\u77ac\u53d8\u80fd\u91cf\u65bd\u52a0\u4e8e\u4fdd\u62a4\u7535\u8def\u65f6\uff0cTVS\u5c06\u4f1a\u51fb\u7a7f\uff0c\u901a\u8fc7\u63d0\u4f9b\u4f4e\u963b\u6297\u7684\u63a5\u5730\u8def\u5f84\u6765\u4fdd\u62a4\u5668\u4ef6\u3002\u7531\u4e8e\u7535\u538b\u548c\u7535\u6d41\u8f83\u9ad8\uff0c\u8fd8\u5fc5\u987b\u901a\u8fc7\u9650\u5236\u901a\u8fc7\u7684\u7535\u6d41\u6765\u4fdd\u62a4TVS\u3002\u8fd9\u53ef\u91c7\u7528TBU\uff0cTBU\u662f\u4e00\u4e2a\u4e3b\u52a8\u9ad8\u901f\u8fc7\u6d41\u4fdd\u62a4\u5143\u4ef6\u53ef\u963b\u6321\u7535\u6d41\uff0c\u800c\u4e0d\u662f\u5c06\u5176\u5206\u6d41\u81f3\u5730\u3002\u4f5c\u4e3a\u4e32\u8054\u5143\u4ef6\uff0c \u5b83\u4f1a\u5bf9\u901a\u8fc7\u5668\u4ef6\u7684\u7535\u6d41\u505a\u51fa\u53cd\u5e94\uff0c\u800c\u4e0d\u662f\u5bf9\u63a5\u53e3\u4e24\u7aef\u7684\u7535\u538b\u505a\u51fa\u53cd\u5e94\u3002TBU\u662f\u4e00\u4e2a\u9ad8\u901f\u8fc7\u6d41\u4fdd\u62a4\u5143\u4ef6\uff0c\u5177\u6709\u9884\u8bbe\u7535\u6d41\u9650\u503c\u548c\u8010\u9ad8\u538b\u80fd\u529b\u3002\u5f53\u53d1\u751f\u8fc7\u6d41\uff0cTVS\u7531\u4e8e\u77ac\u53d8\u4e8b\u4ef6\u51fb\u7a7f\u65f6\uff0cTBU\u4e2d\u7684\u7535\u6d41\u5c06\u5347\u81f3\u5668\u4ef6\u8bbe\u7f6e\u7684\u9650\u6d41\u6c34\u5e73\u3002\u6b64\u65f6\uff0c TBU\u4f1a\u5728\u5c0f\u4e8e1 μs\u65f6\u95f4\u5185\u5c06\u53d7\u4fdd\u62a4\u7535\u8def\u4e0e\u6d6a\u6d8c\u65ad\u5f00\u3002\u5728\u77ac\u53d8\u7684\u5269\u4f59\u65f6\u95f4\u5185\uff0cTBU\u4fdd\u6301\u5728\u53d7\u4fdd\u62a4\u963b\u9694\u72b6\u6001\uff0c\u901a\u8fc7 \u53d7\u4fdd\u62a4\u7535\u8def\u7684\u7535\u6d41\u975e\u5e38\u5c0f(<1 mA)\u3002\u5728\u6b63\u5e38\u5de5\u4f5c\u6761\u4ef6\u4e0b\uff0cTBU \u5177\u6709\u4f4e\u963b\u6297\uff0c\u56e0\u6b64\u5b83\u5bf9\u6b63\u5e38\u7535\u8def\u5de5\u4f5c\u7684\u5f71\u54cd\u5f88\u5c0f\u3002\u5728\u963b\u9694\u6a21\u5f0f\u4e0b\uff0c\u5b83\u5177\u6709\u5f88\u9ad8\u7684\u963b\u6297\u4ee5\u963b\u9694\u77ac\u53d8\u80fd\u91cf\u3002\u5728\u77ac\u53d8\u4e8b\u4ef6\u540e\uff0cTBU\u81ea\u52a8\u91cd\u7f6e\u5230\u4f4e\u963b\u6297\u72b6\u6001\uff0c\u8ba9\u7cfb\u7edf\u6062\u590d\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe10\uff1aTBU\u4e0ePTC\uff08\u4fdd\u9669\u4e1dFuse\uff09\u4e4b\u95f4\u7684\u5dee\u5f02<\/p>\n

\n\t\u4e0e\u6240\u6709\u8fc7\u6d41\u4fdd\u62a4\u6280\u672f\u76f8\u540c\uff0cTBU\u5177\u6709\u6700\u5927\u51fb\u7a7f\u7535\u538b\uff0c\u56e0\u6b64 \u4e3b\u4fdd\u62a4\u5668\u4ef6\u5fc5\u987b\u7b9d\u4f4d\u7535\u538b\uff0c\u5e76\u5c06\u77ac\u53d8\u80fd\u91cf\u91cd\u65b0\u5f15\u5bfc\u81f3\u5730\u3002 \u8fd9\u901a\u5e38\u4f7f\u7528\u6c14\u4f53\u653e\u7535\u7ba1\u6216\u56fa\u4f53\u653e\u7535\u7ba1\uff08\u6676\u95f8\u7ba1\uff09TISP\u7b49\u6280\u672f\u5b9e\u73b0\uff0c\u4f8b\u5982TISP\u3002TISP\u5145\u5f53\u4e3b\u4fdd\u62a4\u5668\u4ef6\uff0c\u5f53\u8d85\u8fc7\u5176\u9884\u5b9a\u4e49\u4fdd\u62a4\u7535\u538b\u65f6\uff0c\u5b83\u63d0\u4f9b\u77ac\u53d8\u5f00\u8def\u4f4e\u963b\u6297\u63a5\u5730\u8def\u5f84\uff0c \u4ece\u800c\u5c06\u5927\u90e8\u5206\u77ac\u53d8\u80fd\u91cf\u4ece\u7cfb\u7edf\u548c\u5176\u4ed6\u4fdd\u62a4\u5668\u4ef6\u8f6c\u79fb\u5f00\u3002<\/p>\n

\n\tTISP\u7684\u975e\u7ebf\u6027\u7535\u538b-\u7535\u6d41\u7279\u6027\u901a\u8fc7\u8f6c\u79fb\u4ea7\u751f\u7684\u7535\u6d41\u6765\u9650\u5236\u8fc7\u538b\u3002\u4f5c\u4e3a\u6676\u95f8\u7ba1\uff0cTISP\u5177\u6709\u975e\u8fde\u7eed\u7535\u538b-\u7535\u6d41\u7279\u6027\uff0c\u5b83\u662f\u7531\u4e8e\u9ad8\u7535\u538b\u533a\u548c\u4f4e\u7535\u538b\u533a\u4e4b\u95f4\u7684\u5207\u6362\u52a8\u4f5c\u800c\u5bfc\u81f4\u7684\u3002\u5728TISP\u5668\u4ef6\u5207\u6362\u5230\u4f4e\u7535\u538b\u72b6\u6001\u4e4b\u524d\uff0c\u5b83\u5177\u6709\u4f4e\u963b\u6297\u63a5\u5730\u8def\u5f84\u4ee5\u5206\u6d41\u77ac\u53d8\u80fd\u91cf\uff0c\u96ea\u5d29\u51fb\u7a7f\u533a\u57df\u5219\u5bfc\u81f4\u4e86\u7b9d\u4f4d\u52a8\u4f5c\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe11\uff1aTISP\u7684\u7279\u6027\u66f2\u7ebf<\/p>\n

\n\t\u5728\u9650\u5236\u8fc7\u538b\u7684\u8fc7\u7a0b\u4e2d\uff0c\u53d7\u4fdd\u62a4\u7535\u8def\u77ed\u6682\u66b4\u9732\u5728\u9ad8\u538b\u4e0b\uff0c\u56e0\u800c\u5728\u5207\u6362\u5230\u4f4e\u538b\u4fdd\u62a4\u6253\u5f00\u72b6\u6001\u4e4b\u524d\uff0cTISP\u5668\u4ef6\u5904\u5728\u51fb\u7a7f\u533a\u57df\u3002TBU\u5c06\u4fdd\u62a4\u540e\u7aef\u7535\u8def\uff0c\u9632\u6b62\u7531\u4e8e\u8fd9\u79cd\u9ad8\u7535\u538b\u5bfc\u81f4\u7684\u9ad8\u7535\u6d41\u9020\u6210\u635f\u574f\u3002\u5f53\u8f6c\u79fb\u7535\u6d41\u964d\u4f4e\u5230\u4e34\u754c\u503c\u4ee5\u4e0b\u65f6\uff0cTISP\u5668\u4ef6\u81ea\u52a8\u91cd\u7f6e\uff0c\u4ee5\u4fbf\u6062\u590d\u6b63\u5e38\u7cfb\u7edf\u8fd0\u884c\u3002<\/p>\n

\n\t\u6240\u6709\u4e0a\u8ff0\u4e09\u4e2a\u5143\u4ef6\u534f\u540c\u5de5\u4f5c\uff0c\u4e0e\u7cfb\u7edf\u8f93\u5165\/\u8f93\u51fa\u914d \u5408\uff0c\u4e00\u8d77\u9488\u5bf9\u9ad8\u7535\u538b\u5927\u7535\u6d41\u77ac\u53d8\u4e3a\u7cfb\u7edf\u63d0\u4f9b\u7cfb\u7edf\u7ea7\u4fdd\u62a4\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe12\uff1aTVS\u3001TBU\u548cTISP\u534f\u540c\u5de5\u4f5c\uff0c\u63d0\u4f9b\u66f4\u9ad8\u7ea7\u522b\u4fdd\u62a4<\/p>\n

\n\t\u65b9\u6848\u4e09<\/p>\n

\n\t\u5982\u679c\u4fdd\u62a4\u65b9\u6848\u9700\u8981\u5e94\u5bf9\u6700\u9ad86 kV\u7684\u6d6a\u6d8c\u77ac\u53d8\uff0c\u5219\u9700\u8981\u5bf9\u65b9\u6848\u505a\u4e9b\u8c03\u6574\u3002\u65b0\u65b9\u6848\u7684\u5de5\u4f5c\u65b9\u5f0f\u7c7b\u4f3c\u4e8e\u4fdd\u62a4\u65b9\u6848\u4e8c\uff1b\u4f46\u6b64\u7535\u8def\u91c7\u7528\u6c14\u4f53\u653e\u7535\u7ba1(GDT) \u53d6\u4ee3TISP\u6765\u4fdd\u62a4TBU\uff0c\u4ece\u800c\u4fdd\u62a4\u6b21\u7ea7\u4fdd\u62a4\u5668\u4ef6TVS\u3002\u76f8\u5bf9\u4e8eTISP\uff0cGDT\u91c7\u7528\u6c14\u4f53\u653e\u7535\u539f\u7406\uff0c\u53ef\u9488\u5bf9\u66f4\u5927\u7684\u8fc7\u538b\u548c\u8fc7\u6d41\u5e94\u529b\u63d0\u4f9b\u4fdd\u62a4\u3002TISP\u7684\u989d\u5b9a\u7535\u6d41\u662f220 A\uff0cGDT\u7684\u989d\u5b9a\u7535\u6d41\u5219\u662f5 kA(\u6309\u5355\u4f4d\u5bfc\u4f53\u8ba1\u7b97)\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe13\uff1aGDT\u7684\u7279\u6027\u66f2\u7ebf<\/p>\n

\n\tGDT\u4e3b\u8981\u7528\u4f5c\u4e3b\u4fdd\u62a4\u5668\u4ef6\uff0c\u63d0\u4f9b\u4f4e\u963b\u6297\u63a5\u5730\u8def\u5f84\u4ee5\u9632\u6b62\u8fc7\u538b\u77ac\u53d8\u3002\u5f53\u77ac\u53d8\u7535\u538b\u8fbe\u5230GDT\u706b\u82b1\u653e\u7535\u7535\u538b\u65f6\uff0cGDT\u5c06\u4ece\u9ad8\u963b\u6297\u5173\u95ed\u72b6\u6001\u5207\u6362\u5230\u7535\u5f27\u6a21\u5f0f\u3002\u5728\u7535\u5f27\u6a21\u5f0f\u4e0b\uff0cGDT\u6210\u4e3a\u865a\u62df\u77ed\u8def\uff0c\u63d0\u4f9b\u77ac\u53d8\u5f00\u8def\u7535\u6d41\u63a5\u5730\u6cc4\u653e\u8def\u5f84\uff0c\u5c06\u77ac\u53d8\u51b2\u51fb\u7535\u6d41\u4ece\u53d7\u4fdd\u62a4\u5668\u4ef6\u4e0a\u8f6c\u79fb\u5f00\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe14\uff1a\u7528TVS\u3001TBU\u3001GDT\u534f\u540c\u5de5\u4f5c\uff0c\u53ef\u4ee5\u8010\u53d7\u66f4\u5927\u7684\u8fc7\u538b\u548c\u8fc7\u6d41\u5e94\u529b<\/p>\n

\n\tExcelpoint\u4e16\u5065\u516c\u53f8\u6280\u672f\u652f\u6301\u90e8\u526f\u603b\u76d1Angus Zhao\u603b\u7ed3\u5230\uff1aRS-485\u7aef\u53e3\u7684EMC\u65b9\u6848\u81ea\u6709\u5957\u8def\uff0c\u4e86\u89e3\u4e86\u4fdd\u62a4\u9700\u8981\u9075\u5faa\u7684\u89c4\u8303\uff0c\u719f\u6089\u7535\u8def\u4fdd\u62a4\u5668\u4ef6\u7684\u7279\u6027\uff0c\u505a\u51fa\u5408\u89c4\u7684\u8bbe\u8ba1\u5e76\u4e0d\u96be\u3002<\/p>\n

\n\t<\/p>\n

\n\t\u56fe15\uff1a\u4e09\u4e2aRS485\u7aef\u53e3\u7684EMC\u65b9\u6848\u4fdd\u62a4\u7ea7\u522b\u6bd4\u8f83<\/p>\n

\n\t\u6700\u540e\uff0c\u4e16\u5065\u516c\u53f8\u8fd8\u4ecb\u7ecd\u4e86\u4e24\u4e2a\u7ecf\u5178\u5b9e\u7528\u7684RS-485\u7aef\u53e3\u4fdd\u62a4\u65b9\u6848\uff0c\u53ef\u4ee5\u901a\u8fc7IEC6100-4-2 ESD, IEC61000-4-4 EFT, IEC61000-4-5 Surge 4\u7ea7\u4ee5\u4e0aEMS\u5b89\u89c4\u6d4b\u8bd5\u3002<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u65b9\u6848\u4e00\uff1a\u91c7\u75283\u6781GDT+TBU+TVS\u67b6\u6784\u65b9\u6848<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u65b9\u6848\u4e8c\uff1a\u91c7\u75282\u6781GDT+TBU+TVS\u67b6\u6784\u65b9\u6848<\/p>\n

\n\t\"\u4e09\u79cd\u5e38\u7528\u7c7b\u578b\u7684RS-485\u7aef\u53e3\u7684EMC\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n","protected":false},"excerpt":{"rendered":"

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