{"id":5802,"date":"2018-08-23T00:00:28","date_gmt":"2018-08-22T15:00:28","guid":{"rendered":"http:\/\/micro.wfjydl.com\/techweb\/?p=5802"},"modified":"2022-09-16T15:05:52","modified_gmt":"2022-09-16T07:05:52","slug":"emi%e5%af%b9%e7%ad%96","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/acdc\/acdc_pwm\/acdc_pwm04\/5320","title":{"rendered":"EMI\u5bf9\u7b56"},"content":{"rendered":"<p>\u524d\u4e00\u7bc7\u6587\u7ae0\u4ecb\u7ecd\u4e86\u4e3b\u8981\u90e8\u4ef6\u7684\u9009\u578b\u548c\u5e38\u6570\u8ba1\u7b97\u7684\u76f8\u5173\u5185\u5bb9\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u964d\u4f4eEMI\u7684\u5bf9\u7b56\u3002<\/p>\n<p>\u8fd1\u5e74\u6765\uff0cEMC\u53ef\u8c13\u662f\u7535\u5b50\u8bbe\u5907\u7684\u91cd\u8981\u8bfe\u9898\u4e4b\u4e00\u3002\u4e16\u754c\u5404\u56fd\u5bf9EMC\u90fd\u6709\u9650\u5236\u89c4\u5b9a\uff0c\u5728\u8fdb\u884c\u8bbe\u5907\u8bbe\u8ba1\u65f6\u5fc5\u987b\u6ee1\u8db3\u76f8\u5173\u8981\u6c42\u3002\u5728\u6b64\u4e4b\u524d\uff0c\u53ef\u4ee5\u8bf4\u662f\u56e0\u4e3a\u5b58\u5728\u5f53\u5f00\u5173\u7535\u6e90\u6563\u5e03\u566a\u58f0\u65f6\u5c06\u4f7f\u8bbe\u5907\u7684S\/N\u964d\u4f4e\uff0c\u4ece\u800c\u4f7f\u8bbe\u5907\u65e0\u6cd5\u6ee1\u8db3\u89c4\u683c\u8981\u6c42\u7684\u60c5\u51b5\uff0c\u56e0\u6b64\u5fc5\u987b\u91c7\u53d6\u566a\u58f0\u5bf9\u7b56\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u7531\u4e8e\u5076\u89c1\u6df7\u6dc6EMC\u548cEMI\u7b49\u672f\u8bed\u7684\u60c5\u51b5\uff0c\u4e0b\u9762\u5148\u6574\u7406\u4e00\u4e0b\u8fd9\u4e9b\u672f\u8bed\u3002<\/p>\n<p>\u30fbEMI\uff08Electro Magnetic Interference\uff09\uff1a\u7535\u78c1\u5e72\u6270<br \/>\n\u7535\u6ce2\u548c\u9ad8\u9891\u7535\u78c1\u6ce2\u6210\u4e3a\u566a\u58f0\u800c\u5f71\u54cd\u7535\u5b50\u8bbe\u5907\u7b49\uff0c\u6216\u662f\u4f1a\u9020\u6210\u5f71\u54cd\u7684\u7535\u78c1\u6ce2\u3002<br \/>\n\uff0d\u4f20\u5bfc\u566a\u58f0\uff1a\u7ecf\u7531\u7ebf\u7f06\u548cPCB\u677f\u5e03\u7ebf\u4f20\u5bfc\u7684\u566a\u58f0<br \/>\n&gt; \u5dee\u6a21\uff08\u5e38\u6a21\uff09\u566a\u58f0\uff1a\u53d1\u751f\u5728\u7535\u6e90\u7ebf\u4e4b\u95f4\uff0c\u4e14\u4f20\u8f93\u65b9\u5411\u548c\u7535\u6d41\u76f8\u540c\u7684\u566a\u58f0<br \/>\n&gt; \u5171\u6a21\u566a\u58f0\uff1a\u900f\u8fc7\u91d1\u5c5e\u5916\u58f3\u7b49\uff0c\u901a\u8fc7\u6742\u6563\u7535\u5bb9\u7b49\uff0c\u56de\u5230\u4fe1\u53f7\u6e90\u5934\u7684\u566a\u58f0<br \/>\n\uff0d\u8f90\u5c04\u566a\u58f0\uff1a\u91ca\u653e\u5230\u7a7a\u6c14\u4e2d\u7684\u566a\u58f0<\/p>\n<p>\u30fbEMS\uff08Electro Magnetic Susceptibility\uff09\uff1a\u7535\u78c1\u654f\u611f\u6027<br \/>\n\u6307\u5373\u4f7f\u53d7\u5230\u7535\u78c1\u6ce2\u7684\u59a8\u788d\u3001\u5e72\u6270\uff08EMI\uff1a\u4f20\u5bfc\u566a\u58f0\u53ca\u8f90\u5c04\u566a\u58f0\uff09\u4e5f\u4e0d\u4f1a\u5f15\u8d77\u635f\u574f\u7684\u80fd\u529b\u4e0e\u8010\u53d7\u6027\u3002<\/p>\n<p>\u30fbEMC\uff08Electro Magnetic Compatibility\uff09\uff1a\u7535\u78c1\u517c\u5bb9\u6027<br \/>\nEMI\uff0bEMS\u3002\u8f90\u5c04\uff08Emission\uff1a\u6392\u653e\uff0c\u53d1\u5c04\uff09\u5bf9\u7b56\u548c\u6297\u6270\u6027\uff08Immunity\uff1a\u8010\u53d7\u6027\uff09\u7684\u517c\u5bb9\u53ca\u5176\u5bf9\u7b56\u3002<\/p>\n<p>EMI\u4ece\u8def\u5f84\u6765\u770b\uff0c\u5206\u6210\u4f20\u5bfc\u566a\u58f0\u548c\u8f90\u5c04\u566a\u58f0\uff0c\u4f20\u5bfc\u566a\u58f0\u6839\u636e\u4f20\u5bfc\u65b9\u5f0f\uff0c\u53c8\u53ef\u4ee5\u518d\u7ec6\u5206\u6210\u5dee\u52a8\u6a21\u5f0f\u566a\u58f0\u548c\u5171\u6a21\u566a\u58f0\u3002<\/p>\n<p><strong>EMI\u5bf9\u7b56<\/strong><\/p>\n<p>\u6b63\u5982\u5728\u4e0a\u8ff0\u672f\u8bed\u89e3\u8bf4\u4e2d\u6240\u8ff0\uff0cEMI\u662f\u4f1a\u5bf9\u5176\u4ed6\u7535\u8def\u9020\u6210\u5f71\u54cd\u7684\uff0c\u56e0\u6b64\uff0c\u5176\u5bf9\u7b56\u7684\u5173\u952e\u662f\u9632\u6b62\u4ea7\u751f\u566a\u58f0\u3002\u4ea7\u751f\u566a\u58f0\u7684\u4e3b\u8981\u539f\u56e0\u662f\u5927\u7535\u6d41\u5f00\u5173\u7684\u8282\u70b9\u6216\u7ebf\u8def\u3002\u57fa\u672c\u5bf9\u7b56\u662f\u589e\u52a0\u8d77\u5230\u963b\u6297\u5339\u914d\u548c\u65c1\u8def\/\u6ee4\u6ce2\u4f5c\u7528\u7684\u7535\u5bb9\u5668\u3001\u7535\u963b\/\u7535\u5bb9\u7535\u8def\u3002\u4e0b\u9762\u518d\u6b21\u7ed9\u51fa\u6574\u4f53\u7535\u8def\uff0c\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u5bf9\u7b56\u8981\u70b9\u3002<\/p>\n<p style=\"width:650px; margin:0 auto 30px auto;\"><img loading=\"lazy\" decoding=\"async\" src=\"\/upload\/2016\/11\/A4_9_ckt.gif\" width=\"650\" height=\"311\" alt=\"A4_9_ckt\"><\/p>\n<p style=\"margin-bottom:10px;\">\u30fb\u5728\u8f93\u5165\u7aef\u589e\u52a0\u6ee4\u6ce2\u5668<\/p>\n<p>\u8f93\u5165\u7535\u538b\u662f\u5e26\u6709\u7eb9\u6ce2\u7684\u9ad8\u7535\u538b\uff0c\u5e76\u901a\u8fc7\u5185\u7f6eMOSFET\u6765\u9ad8\u901fON\/OFF,\u6240\u4ee5\u5728\u8f93\u5165\u7aef\u589e\u52a0\u6ee4\u6ce2\u5668\u53ef\u964d\u4f4e\u566a\u58f0\u3002<\/p>\n<p style=\"margin-bottom:10px;\">\u30fb\u5728\u5185\u7f6eMOSFET\u7684\u6f0f\u6781\uff0d\u6e90\u6781\u95f4\u589e\u52a0\u7535\u5bb9\u5668<\/p>\n<p>\u5373\u7535\u8def\u56fe\u4e2d\u7684C8\u3002\u7535\u5bb9\u503c\u9700\u898147\uff5e100pF\u5de6\u53f3\uff0c\u8010\u538b\u9700\u8981500V\u4ee5\u4e0a\u3002\u8fd9\u79cd\u505a\u6cd5\u53ef\u964d\u4f4e\u9ad8\u901f\u5f00\u5173\u5f15\u8d77\u7684OFF\u65f6\u7684\u6d6a\u6d8c\u3002\u53e6\u5916\u4e5f\u662f\u4e00\u79cd\u7f13\u51b2\u65b9\u5f0f\u3002\u4f46\u662f\uff0c\u4f1a\u589e\u52a0\u635f\u8017\uff0c\u56e0\u6b64\u5fc5\u987b\u6ce8\u610f\u6e29\u5ea6\u4e0a\u5347\u60c5\u51b5\u3002<\/p>\n<p style=\"margin-bottom:10px;\">\u30fb\u7ed9\u8f93\u51fa\u6574\u6d41\u4e8c\u6781\u7ba1D4\u589e\u52a0RC\u7f13\u51b2\u7535\u8def<\/p>\n<p>\u4e0eD4\u5e76\u8054\u589e\u52a0C9\uff1a500V\/1000pF\u3001 R10\uff1a10\u03a9\/1W\u5de6\u53f3\u3002\u8fd9\u79cd\u505a\u6cd5\u53ef\u964d\u4f4eON\/OFF\u65f6\u4ea7\u751f\u7684\u5c16\u5cf0\u7535\u538b\uff0c\u8fd9\u4e0e\u8f93\u5165\u7f13\u51b2\u7535\u8def\u7684\u601d\u8def\u76f8\u540c\u3002\u7531\u4e8e\u5e38\u6570\u53ea\u662f\u53c2\u8003\u503c\uff0c\u6240\u4ee5\u5fc5\u987b\u5148\u786e\u8ba4\u5b9e\u9645\u566a\u58f0\u540e\u518d\u52a0\u4ee5\u8c03\u6574\u3002<\/p>\n<div class=\"fBox\" style=\"margin:0 auto 30px auto;\">\n<div class=\"fl\" style=\"width:350px;\">\n<p style=\"margin-bottom:10px;\">\u30fb\u5728\u8f93\u51fa\u7aef\u589e\u52a0LC\u6ee4\u6ce2\u5668<\/p>\n<p>\u53f3\u4fa7\u7535\u8def\u56fe\u662f\u5728\u8f93\u51fa\u7aef\u589e\u52a0\u4e86LC\u6ee4\u6ce2\u5668\u7684\u793a\u4f8b\u3002L2\u662f10\u00b5H\uff0cC10\u662f10\u00b5F\uff5e100\u00b5F\u5de6\u53f3\uff09<\/p>\n<p>\u8f93\u51fa\u7535\u538b\u4e2d\u5b58\u5728\u7740\u53d6\u51b3\u4e8e\u5f00\u5173\u9891\u7387\u7684\u7eb9\u6ce2\uff0c\u4ee5\u53ca\u8c10\u6ce2\u3001\u7535\u611f\u548c\u7535\u5bb9\u5668\u6240\u5f15\u8d77\u7684\u566a\u58f0\u3002\u5f53\u8fd9\u4e9b\u566a\u58f0\u9020\u6210\u56f0\u6270\u65f6\uff0c\u5728\u8f93\u51fa\u7aef\u589e\u52a0LC\u6ee4\u6ce2\u5668\u53ef\u6709\u6548\u89e3\u51b3\u8be5\u56f0\u6270\u3002<\/p>\n<\/div>\n<div class=\"fr\" style=\"width:350px;\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"\/upload\/2016\/11\/A4_9_out.gif\" width=\"350\" height=\"281\" alt=\"A4_9_out\"><\/div>\n<\/div>\n<p>\u8fd9\u4e9b\u662f\u4e3b\u8981\u7684\u566a\u58f0\u5bf9\u7b56\u3002\u4e0d\u8bba\u4f55\u79cd\u65b9\u5f0f\uff0c\u90fd\u5fc5\u987b\u6d4b\u91cf\u566a\u58f0\uff0c\u6216\u81f3\u5c11\u786e\u8ba4\u566a\u58f0\u5bf9\u8bbe\u5907\u9020\u6210\u7684\u5f71\u54cd\u3002\u51c6\u786e\u6d4b\u91cf\u566a\u58f0\u9700\u8981\u5177\u5907\u6d4b\u91cf\u73af\u5883\u548c\u88c5\u7f6e\u3002\u65e0\u6cd5\u5b9a\u91cf\u6d4b\u91cf\u566a\u58f0\u503c\u65f6\uff0c\u6709\u65f6\u53ef\u4ee5\u4ece\u8bbe\u5907\u7684S\/N\u7b49\u6027\u80fd\u5c42\u9762\u6765\u638c\u63e1\u662f\u5426\u4f1a\u9020\u6210\u5f71\u54cd\u4ee5\u53ca\u5f71\u54cd\u7684\u7a0b\u5ea6\u3002<\/p>\n<p>\u8fd9\u91cc\u63d0\u5230\u7684\u5bf9\u7b56\uff0c\u662f\u5c5e\u4e8e\u7535\u6e90\u7535\u8def\u7ed3\u6784\u4e0a\u7684\u566a\u58f0\u5bf9\u7b56\u3002\u566a\u58f0\u7684\u4ea7\u751f\u4e5f\u548cPCB\u677f\u5e03\u5c40\u3001\u5143\u5668\u4ef6\u914d\u7f6e\u3001\u5143\u5668\u4ef6\u6027\u80fd\u7b49\u6709\u5173\u7cfb\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u5c06LC\u6ee4\u6ce2\u5668\u7531\u7b80\u5355\u7684L\u578b\u5347\u7ea7\u4e3a\u03c0\u578b\u6216T\u578b\uff0c\u6216\u5728\u7535\u8def\u677f\u4e0a\u8bbe\u7f6e\u5c4f\u853d\u7b49\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u67d0\u4e9b\u8bbe\u5907\u89c4\u683c\u8fd8\u5fc5\u987b\u7b26\u5408\u566a\u58f0\u6807\u51c6\uff08\u6bd4\u5982\u56fd\u9645\u65e0\u7ebf\u7535\u5e72\u6270\u7279\u522b\u59d4\u5458\u4f1a\uff08CISPR\uff09\u9881\u5e03\u7684\u6807\u51c6\u7b49\uff09\u3002\u5f53\u9700\u8981\u6ee1\u8db3\u67d0\u4e9b\u6807\u51c6\u8981\u6c42\u65f6\uff0c\u662f\u9700\u8981\u4ece\u8bbe\u8ba1\u9636\u6bb5\u5f00\u59cb\u5c31\u5fc5\u987b\u8c28\u8bb0\u7684\uff0c\u8fd9\u4e00\u70b9\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u524d\u4e00\u7bc7\u6587\u7ae0\u4ecb\u7ecd\u4e86\u4e3b\u8981\u90e8\u4ef6\u7684\u9009\u578b\u548c\u5e38\u6570\u8ba1\u7b97\u7684\u76f8\u5173\u5185\u5bb9\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u964d\u4f4eEMI\u7684\u5bf9\u7b56\u3002 \u8fd1\u5e74\u6765\uff0cEMC\u53ef\u8c13\u662f\u7535\u5b50\u8bbe\u5907\u7684\u91cd\u8981\u8bfe\u9898\u4e4b\u4e00\u3002\u4e16\u754c\u5404\u56fd\u5bf9EMC\u90fd\u6709\u9650\u5236\u89c4\u5b9a\uff0c\u5728\u8fdb\u884c\u8bbe\u5907\u8bbe\u8ba1\u65f6\u5fc5\u987b\u6ee1\u8db3\u76f8\u5173\u8981\u6c42\u3002\u5728\u6b64\u4e4b\u524d\uff0c\u53ef\u4ee5\u8bf4\u662f\u56e0\u4e3a\u5b58\u5728\u5f53\u5f00 [&hellip;]","protected":false},"author":1,"featured_media":20737,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[587],"tags":[5,23,26,378,379,646,796,797,798,799,800],"class_list":["post-5802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-acdc_pwm04","tag-5","tag-23","tag-acdc","tag-emc","tag-emi","tag-lc","tag-797","tag-798","tag-799","tag-800"],"acf":[],"wps_subtitle":"","_links":{"self":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/5802","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/comments?post=5802"}],"version-history":[{"count":5,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/5802\/revisions"}],"predecessor-version":[{"id":20738,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/5802\/revisions\/20738"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media\/20737"}],"wp:attachment":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media?parent=5802"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/categories?post=5802"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/tags?post=5802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}