{"id":2098,"date":"2026-03-04T00:27:42","date_gmt":"2026-03-03T16:27:42","guid":{"rendered":"https:\/\/xujiwei.com\/blog\/?p=2098"},"modified":"2026-03-04T00:27:42","modified_gmt":"2026-03-03T16:27:42","slug":"magent-clock-back-emf","status":"publish","type":"post","link":"https:\/\/xujiwei.com\/blog\/2026\/03\/magent-clock-back-emf\/","title":{"rendered":"\u771f\u5b9e\u6848\u4f8b\u4e86\u89e3\u4e86\u4ec0\u4e48\u662f\u53cd\u5411\u7535\u52a8\u52bf"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 ez-toc-wrap-right counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<p class=\"ez-toc-title\">\u6587\u7ae0\u76ee\u5f55<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69f5d68cab508\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" 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href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/magent-clock-back-emf\/#%E5%8E%9F%E7%94%B5%E8%B7%AF%E8%AE%BE%E8%AE%A1\" title=\"\u539f\u7535\u8def\u8bbe\u8ba1\">\u539f\u7535\u8def\u8bbe\u8ba1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/magent-clock-back-emf\/#%E7%A4%BA%E6%B3%A2%E5%99%A8%E8%A7%82%E5%AF%9F\" title=\"\u793a\u6ce2\u5668\u89c2\u5bdf\">\u793a\u6ce2\u5668\u89c2\u5bdf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/magent-clock-back-emf\/#%E5%8F%8D%E5%90%91%E7%94%B5%E5%8A%A8%E5%8A%BF%E6%98%AF%E5%A6%82%E4%BD%95%E4%BA%A7%E7%94%9F%E7%9A%84%EF%BC%9F\" title=\"\u53cd\u5411\u7535\u52a8\u52bf\u662f\u5982\u4f55\u4ea7\u751f\u7684\uff1f\">\u53cd\u5411\u7535\u52a8\u52bf\u662f\u5982\u4f55\u4ea7\u751f\u7684\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link 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href=\"https:\/\/mp.weixin.qq.com\/s\/lRszQwfN-0F50oCY6hb79g\">\u7535\u78c1\u94c1\u9a71\u52a8\u7684\u6bb5\u7801\u65f6\u949f\u627e\u5230\u89e3\u6cd5\u4e86\uff0c\u5148\u6765\u4e00\u4f4d\u8bd5\u8bd5<\/a>\uff09\uff0c\u5728\u8bc4\u8bba\u533a\u6709\u670b\u53cb\u6307\u51fa<strong>\u7535\u8def\u4e2d\u7535\u78c1\u94c1\u6ca1\u6709\u5e76\u8054\u7eed\u6d41\u4e8c\u6781\u7ba1<\/strong>\uff0c\u6211\u4e4b\u524d\u867d\u7136\u63a5\u89e6\u8fc7\u8fd9\u4e2a\u6982\u5ff5\uff0c\u4f46\u662f\u5bf9\u4e8e\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528\u5e76\u6ca1\u6709\u5f88\u6df1\u523b\u7684\u6982\u5ff5\uff0c\u5e76\u4e14\u4f3c\u4e4e\u4e5f\u6ca1\u6709\u51fa\u95ee\u9898\uff1f<\/p>\n<p>\u4f46\u662f\u8fd9\u80af\u5b9a\u662f\u6709\u95ee\u9898\u7684\uff0c\u4e3a\u4e86\u5b66\u4e60\u4e00\u4e0b\u6ca1\u6709\u7eed\u6d41\u4e8c\u6781\u7ba1\u6709\u4ec0\u4e48\u5371\u5bb3\uff0c\u8fd8\u662f\u6765\u6d4b\u8bd5\u770b\u770b\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%8E%9F%E7%94%B5%E8%B7%AF%E8%AE%BE%E8%AE%A1\"><\/span>\u539f\u7535\u8def\u8bbe\u8ba1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5728\u539f\u6765\u7684\u7535\u8def\u4e2d\uff0c\u7535\u78c1\u94c1\u8fde\u63a5\u5728 12V \u548c NMOS \u7684 Drain \u4e0a\uff0c\u901a\u8fc7 Gate \u63a7\u5236 NMOS \u7684\u5bfc\u901a\uff0c\u4ece\u800c\u63a5\u901a\u7535\u78c1\u94c1\uff0c\u5b9e\u73b0\u5bf9\u6bb5\u7801\u4e0a\u6c38\u78c1\u94c1\u7684\u63a8\u52a8\uff0c\u5b9e\u73b0\u6bb5\u7801\u7684\u7ffb\u8f6c\u3002<\/p>\n<p><img src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2025\/12\/magent-clock-back-emf-1.png\" alt=\"magent-clock-back-emf-1\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E7%A4%BA%E6%B3%A2%E5%99%A8%E8%A7%82%E5%AF%9F\"><\/span>\u793a\u6ce2\u5668\u89c2\u5bdf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5728\u6d4b\u8bd5\u65f6\u4f7f\u7528 10V \u5bf9\u7535\u78c1\u94c1\u8fdb\u884c\u4f9b\u7535\uff0c\u5e76\u4e14\u901a\u8fc7\u5355\u7247\u673a\u5bf9 NMOS \u8fdb\u884c\u64cd\u4f5c\uff0c\u5728\u7ffb\u8f6c\u6bb5\u7801\u65f6\uff0c\u5bf9\u7535\u78c1\u94c1\u8fdb\u884c\u63a5\u901a 50ms \u7684\u64cd\u4f5c\u3002<\/p>\n<p>\u7136\u540e\u793a\u6ce2\u5668\u8fde\u63a5\u5728 NMOS \u7684 Drain \u4e0a\uff0c\u89c2\u5bdf\u7535\u538b\u53d8\u5316\u3002<\/p>\n<p><strong>\u672a\u63a5\u7eed\u6d41\u4e8c\u6781\u7ba1\u7535\u538b\u53d8\u5316<\/strong><\/p>\n<p>\u53ef\u4ee5\u770b\u5230\u5728\u5173\u95ed NMOS \u7684\u77ac\u95f4\uff0c\u6709\u4e00\u4e2a\u6781\u9ad8\u7684\u5c16\u523a\u51fa\u73b0\uff0c<strong>\u793a\u6ce2\u5668\u663e\u793a\u7535\u538b\u4e3a 37.6V<\/strong>\uff0c\u8fd9\u7406\u8bba\u4e0a\u5df2\u7ecf\u8d85\u8fc7\u4e86 NMOS \u7684\u5de5\u4f5c\u7535\u538b \ud83d\ude02\u3002<\/p>\n<p><img src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2025\/12\/magent-clock-back-emf-2.png\" alt=\"magent-clock-back-emf-2\" \/><\/p>\n<p>\u653e\u5927\u770b\u53ef\u4ee5\u770b\u5230\u8fd9\u4e2a\u7535\u538b\u6301\u7eed\u4e86 300us \u518d\u9010\u6e10\u964d\u4f4e\u5230\u6b63\u5e38\u5de5\u4f5c\u7535\u538b\u7684 10V\u3002<\/p>\n<p><img src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2025\/12\/magent-clock-back-emf-3.png\" alt=\"magent-clock-back-emf-3\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%8F%8D%E5%90%91%E7%94%B5%E5%8A%A8%E5%8A%BF%E6%98%AF%E5%A6%82%E4%BD%95%E4%BA%A7%E7%94%9F%E7%9A%84%EF%BC%9F\"><\/span>\u53cd\u5411\u7535\u52a8\u52bf\u662f\u5982\u4f55\u4ea7\u751f\u7684\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u987a\u4fbf\u5411 AI \u5b66\u4e60\u4e86\u4e00\u4e0b\u4e3a\u4f55\u4f1a\u6709\u8fd9\u4e2a\u53cd\u5411\u7535\u52a8\u52bf\uff1a<\/p>\n<blockquote>\n<p>\u6838\u5fc3\u539f\u7406\u662f <strong>\u7535\u611f\u4e2d\u7684\u7535\u6d41\u4e0d\u80fd\u7a81\u53d8<\/strong>\uff08\u695e\u6b21\u5b9a\u5f8b\uff09\u3002<\/p>\n<\/blockquote>\n<ul>\n<li><strong>\u5bfc\u901a\u9636\u6bb5\uff1a<\/strong> \u5f53NMOS\u5bfc\u901a\u65f6\uff0c\u7535\u6d41\u4ece\u7535\u6e90\u6b63\u6781\uff0c\u6d41\u8fc7\u7535\u78c1\u94c1\u7ebf\u5708\uff0c\u518d\u901a\u8fc7\u5bfc\u901a\u7684NMOS\u5230\u5730\uff0c\u5f62\u6210\u56de\u8def\u3002\u7ebf\u5708\uff08\u7535\u611f\uff09\u5185\u90e8\u50a8\u5b58\u4e86\u78c1\u80fd\uff0c\u5176\u7535\u6d41\u7a33\u5b9a\u4e0a\u5347\u81f3 <code>I = Vcc \/ R<\/code>\uff08R\u4e3a\u7ebf\u5708\u76f4\u6d41\u7535\u963b\uff09\u3002<\/li>\n<li><strong>\u65ad\u5f00\u77ac\u95f4\uff1a<\/strong> \u7a81\u7136\u5173\u95ed\uff08\u5173\u65ad\uff09NMOS\u65f6\uff0c\u56de\u8def\u7684\u7535\u6d41\u8def\u5f84\u88ab\u5f3a\u884c\u5207\u65ad\u3002\u7ebf\u5708\u4e3a\u4e86\u7ef4\u6301\u7535\u6d41<strong>\u4e0d\u4f1a\u77ac\u95f4\u53d8\u4e3a\u96f6<\/strong>\uff0c\u5b83\u4f1a\u201c\u53cd\u6297\u201d\u8fd9\u79cd\u53d8\u5316\u3002<\/li>\n<li><strong>\u7535\u538b\u98d9\u5347\uff1a<\/strong> \u7ebf\u5708\u7ef4\u6301\u7535\u6d41\u7684\u552f\u4e00\u65b9\u6cd5\uff0c\u5c31\u662f\u77ac\u95f4\u5728\u81ea\u8eab\u4e24\u7aef\u4ea7\u751f\u4e00\u4e2a\u975e\u5e38\u9ad8\u7684\u7535\u538b\u3002\u8fd9\u4e2a\u7535\u538b\u7684<strong>\u6781\u6027<\/strong>\u662f\uff1a<strong>\u8bd5\u56fe\u4fdd\u6301\u7535\u6d41\u6309\u539f\u65b9\u5411\u6d41\u52a8<\/strong>\u3002\u5728\u4f4e\u4fa7\u9a71\u52a8\u7535\u8def\u4e2d\uff0c\u8fd9\u610f\u5473\u7740\u7ebf\u5708\u7684<strong>\u4e0b\u7aef\uff08\u63a5MOS\u7ba1\u6f0f\u6781\u7684\u4e00\u7aef\uff09\u7535\u538b\u4f1a\u6025\u5267\u5347\u9ad8\uff0c\u751a\u81f3\u8fdc\u9ad8\u4e8e\u7535\u6e90\u7535\u538bVcc<\/strong>\uff0c\u800c\u7ebf\u5708\u4e0a\u7aef\uff08\u63a5Vcc\u7684\u4e00\u7aef\uff09\u7535\u538b\u5219\u53ef\u80fd\u88ab\u62c9\u4f4e\u6216\u8ddf\u968f\u53d8\u5316\u3002<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"%E4%BC%98%E5%8C%96%E7%94%B5%E8%B7%AF\"><\/span>\u4f18\u5316\u7535\u8def<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4f18\u5316\u8d77\u6765\u4e5f\u6bd4\u8f83\u7b80\u5355\uff0c\u6dfb\u52a0\u4e00\u4e2a\u7eed\u6d41\u4e8c\u6781\u7ba1\u5373\u53ef\uff0c\u7535\u78c1\u94c1\u7ebf\u5708\u7535\u963b\u4e3a 26R\uff0c\u5728 10V \u4e0b\u5de5\u4f5c\u7535\u6d41\u4e3a 380mA\uff0cSS14 \u5e94\u8be5\u8db3\u4ee5\u5e94\u4ed8\u8fd9\u4e2a\u60c5\u51b5\u3002<\/p>\n<p><img src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2025\/12\/magent-clock-back-emf-4.png\" alt=\"magent-clock-back-emf-4\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E4%BC%98%E5%8C%96%E5%90%8E%E7%A4%BA%E6%B3%A2%E5%99%A8%E8%A7%82%E5%AF%9F\"><\/span>\u4f18\u5316\u540e\u793a\u6ce2\u5668\u89c2\u5bdf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u7535\u78c1\u94c1\u7684\u710a\u76d8\u7528\u4e86 2.54mm \u95f4\u8ddd\uff0c\u521a\u597d\u591f\u4e00\u4e2a SOD-123FL \u5c01\u88c5\u7684\u4e8c\u6781\u7ba1\u710a\u63a5\u4e0a\u53bb\uff0c\u624b\u52a8\u8865\u4e00\u4e2a\u4e4b\u540e\u518d\u7528\u793a\u6ce2\u5668\u89c2\u5bdf\u4e00\u4e0b\u3002<\/p>\n<p>\u53ef\u4ee5\u770b\u5230\u5728\u5173\u65ad NMOS \u4e4b\u540e\u7684\u6ce2\u5f62\u5c31\u76f8\u5f53\u6b63\u5e38\u4e86\uff0c\u5e76\u4e14\u6700\u9ad8\u7535\u538b\u4e5f\u53ea\u6709 13.6V\u3002<\/p>\n<p><img src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2025\/12\/magent-clock-back-emf-5.png\" alt=\"magent-clock-back-emf-5\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%B0%8F%E7%BB%93\"><\/span>\u5c0f\u7ed3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5e73\u65f6 DIY \u7684\u7535\u8def\u4e2d\u6bd4\u8f83\u5c11\u4f1a\u6709\u611f\u6027\u8d1f\u8f7d\uff0c\u7535\u52a8\u673a\u3001\u7ebf\u5708\u4ec0\u4e48\u7684\u7528\u7684\u6bd4\u8f83\u5c11\uff0c\u5bf9\u8fd9\u5757\u4e86\u89e3\u4e0d\u591f\u6df1\u5165\u3002<\/p>\n<p>\u867d\u7136\u677f\u5b50\u7b80\u5355\uff0c\u4f46\u662f\u8fd8\u662f\u4f1a\u51fa\u9519\uff0c\u8981\u5b66\u4e60\u7684\u4e1c\u897f\u8fd8\u6709\u597d\u591a \ud83d\ude03\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e4b\u524d\u5206\u4eab\u4e86\u4f7f\u7528 NMOS \u9a71\u52a8\u7535\u78c1\u94c1\u901a\u65ad\u6765\u5b9e\u73b0\u7684\u6bb5\u7801\u65f6\u949f\uff08\u89c1 \u7535\u78c1\u94c1\u9a71\u52a8\u7684\u6bb5\u7801\u65f6 &hellip;<\/p>\n<p class=\"read-more\"><a href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/magent-clock-back-emf\/\">\u7ee7\u7eed\u9605\u8bfb &raquo;<\/a><\/p>\n","protected":false},"author":2,"featured_media":2029,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[402],"tags":[328,386],"_links":{"self":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/2098"}],"collection":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/comments?post=2098"}],"version-history":[{"count":0,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/2098\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/media\/2029"}],"wp:attachment":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/media?parent=2098"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/categories?post=2098"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/tags?post=2098"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}