{"id":632,"date":"2013-08-22T22:48:00","date_gmt":"2013-08-22T14:48:00","guid":{"rendered":"http:\/\/www.liuwenhao.me\/?p=632"},"modified":"2021-11-22T13:36:59","modified_gmt":"2021-11-22T05:36:59","slug":"%e8%bf%99%e5%87%a0%e5%a4%a9%e9%81%87%e5%88%b0%e7%9a%84%e5%87%a0%e4%b8%aa%e7%bb%8f%e5%85%b8%e7%94%b5%e8%b7%af","status":"publish","type":"post","link":"https:\/\/www.liuwenhao.me\/?p=632","title":{"rendered":"\u8fd9\u51e0\u5929\u9047\u5230\u7684\u51e0\u4e2a\u7ecf\u5178\u7535\u8def"},"content":{"rendered":"<p>\u8fd9\u51e0\u5929\u5728DGJD\u62c5\u4efb\u52a9\u6559\uff0c\u5728\u62c5\u4efb\u7684\u540c\u65f6\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5e7f\u5927\u5b66\u5f1f\u5b66\u59b9\u4eec\u7684\u806a\u660e\u624d\u667a\u3002\u8fd9\u51e0\u5929\u89c1\u5230\u4e86\u8fd9\u4e48\u51e0\u4e2a\u770b\u4f3c\u6709\u4e9b\u5947\u602a\uff0c\u5176\u5b9e\u6df1\u542b\u9053\u7406\u7684\u7535\u8def\u3002<\/p>\n<p>1.Howland\u7535\u6d41\u6e90\u3002<\/p>\n<p>2.\u7ebf\u6027VF\u8f6c\u6362\u7684\u5b9e\u73b0\u3002<\/p>\n<p>3.\u7ebf\u6027FV\u8f6c\u6362\u7684\u5b9e\u73b0\u3002<\/p>\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u5bfc\u822a\u76ee\u5f55<\/p><ul class=\"toc_list\"><li><a href=\"#1Howland\">1.Howland\u7535\u6d41\u6e90<\/a><\/li><li><a href=\"#2VF\">2.\u7ebf\u6027VF\u8f6c\u6362\u7535\u8def\u7684\u5b9e\u73b0<\/a><\/li><li><a href=\"#3FV\">3.\u7ebf\u6027FV\u8f6c\u6362\u7535\u8def\u7684\u5b9e\u73b0<\/a><\/li><\/ul><\/div>\n<h1><span id=\"1Howland\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">1.Howland\u7535\u6d41\u6e90<\/span><\/span><\/h1>\n<p>Howland\u7535\u6d41\u6e90\u867d\u7136\u7b80\u5355\uff0c\u4f46\u662f\u5374\u662f\u8fd9\u51e0\u5929\u6211\u89c1\u8fc7\u7684\u6700\u8010\u4eba\u5bfb\u5473\u7684\u7535\u8def\u4e4b\u4e00\u3002<\/p>\n<p>Howland\u7535\u6d41\u6e90\u5f88\u65e9\u4e4b\u524d\u6211\u5c31\u89c1\u8fc7\uff0c\u4f46\u662f\u5f53\u65f6\u5374\u4e0d\u77e5\u9053\u8fd9\u4e2a\u7535\u538b\u8f6c\u7535\u6d41\u7684\u7535\u8def\u5c45\u7136\u8fd8\u6709\u4e2a\u540d\u5b57\u3002\u6700\u8fd1\u5728DAC8811\u7684\u6570\u636e\u624b\u518c\u7684\u5e94\u7528\u7535\u8def\u90e8\u5206\uff08\u6570\u636e\u624b\u518c\u7b2c11\u9875\uff0c<a href=\"http:\/\/vdisk.weibo.com\/s\/irksBZzd1x1C\">\u70b9\u51fb\u4e0b\u8f7d<\/a>\uff09\uff0c\u7535\u8def\u56fe\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/1.jpg\"><img loading=\"lazy\" title=\"1\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"1\" src=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/1_thumb.jpg\" width=\"494\" height=\"270\"><\/a><\/p>\n<p>\u521a\u62ff\u5230\u8fd9\u4e2a\u7535\u8def\u56fe\u7684\u65f6\u5019\uff0c\u6211\u5f88\u7eb3\u95f7\u3002\u4e3a\u4ec0\u4e48\u8fd9\u4e2a\u7535\u8def\u91cc\u9762\u5c45\u7136\u628a\u53cd\u9988\u52a0\u8f7d\u4e86\u540c\u76f8\u7aef\uff1f<\/p>\n<p><!--more-->\u5047\u8bbe\u4e00\u79cd\u6781\u7aef\u60c5\u51b5\uff0c\u5728Load\u8d1f\u8f7d\u7535\u963b\u963b\u503c\u8f83\u5927\u7684\u60c5\u51b5\u4e0b\uff08\u5373\u5ffd\u7565IL\uff09\uff1a  <\/p>\n<p>\u540c\u76f8\u7aef\u7684\u53cd\u9988\u4e3a150K\/\uff08150K+50+15K\uff09\u00d7Vout=91%Vout\u3002<\/p>\n<p>\u53cd\u76f8\u7aef\u7684\u53cd\u9988\u4e3a150K\/\uff08150K+15K+50K\uff09Vout=70%Vout\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4 \uff0c\u540c\u76f8\u7aef\u7684\u53cd\u9988\u6bd4\u53cd\u76f8\u7aef\u7684\u53cd\u9988\u529b\u5ea6\u8fd8\u8981\u5927\u3002<\/p>\n<p>\u8fd9\u4e48\u8bf4\u7684\u8bdd\uff0c\u8fd9\u79cd\u7535\u8def\uff0c\u5bfc\u81f4\u653e\u5927\u5668\u5de5\u4f5c\u5728\u6bd4\u5f00\u73af\u66f4\u52a0\u4e25\u91cd\u7684\u6b63\u53cd\u9988\u7684\u72b6\u6001\u4e0b\u3002\u5728\u8fd9\u6837\u7684\u60c5\u51b5\u4e0b\uff0c\u653e\u5927\u5668\u8981\u4e48\u6ee1\u5e45\u8f93\u51fa\uff0c\u8981\u4e48\u9707\u8361\u3002<\/p>\n<p>\u53ef\u662f\u4f5c\u4e3a\u7535\u6d41\u6e90\uff0c\u8fd9\u79cd\u8f93\u51fa\u663e\u7136\u4e0d\u662f\u6211\u4eec\u5e0c\u671b\u7684\u3002<\/p>\n<p>\u5c31\u5728\u7eb3\u95f7\u4e4b\u65f6\uff0c\u4e00\u4e2a\u5b66\u5f1f\u8dd1\u4e86\u8fc7\u6765\uff0c\u8ddf\u6211\u4eec\u8bf4\uff0c\u4ed6\u770b\u5230ADI\u7684\u4e00\u4e2a\u6570\u636e\u624b\u518c\u4e0a\uff0cR3\u2019\u7684\u503c\u4e3a50\u6b27\uff01<\/p>\n<p>\u6211\u4eec\u604d\u7136\u5927\u609f\uff1a\u539f\u6765TI\u5b98\u65b9\u7684\u6570\u636e\u624b\u518c\u4e5f\u6709\u6709\u8bef\u7684\u65f6\u5019\uff01<\/p>\n<p>\u5982\u679c\u628aR3\u2019\u6539\u4e3a50\u6b27\uff0c\u90a3\u4e48\u6574\u4e2a\u7535\u8def\u5c31\u597d\u7406\u89e3\u4e86\u3002<\/p>\n<p>\u6b64\u65f6\uff0c\u82e5\u6682\u65f6\u4e0d\u5173\u6ce8LOAD\uff0c\u90a3\u4e48\u540c\u76f8\u7aef\u4ee5\u53ca\u53cd\u76f8\u7aef\u7684\u7535\u8def\u51e0\u4e4e\u662f\u4e00\u81f4\u7684\u3002\u800c\u82e5\u8003\u8651LOAD\u7684\u56e0\u7d20\uff0c\u540c\u76f8\u7aef\u7684\u53cd\u9988\u5219\u4f1a\u5c0f\u4e8e\u53cd\u76f8\u7aef\u7684\u53cd\u9988\uff0c\u8fd0\u653e\u4f1a\u5de5\u4f5c\u5728\u7ebf\u6027\u653e\u5927\u533a\u800c\u975e\u9971\u548c\u533a\u3002<\/p>\n<p>\u6211\u4eec\u628aDatasheet\u4e2d\u7684\u7535\u8def\u7b80\u5316\uff0c\u7b80\u5316\u6210\u8fd9\u6837\u4e00\u4e2a\u7535\u8def\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/2.jpg\"><img loading=\"lazy\" title=\"2\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"2\" src=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/2_thumb.jpg\" width=\"265\" height=\"233\"><\/a><\/p>\n<p>\u5047\u8bbe\u6b64\u65f6R1\u3001R2\u3001R3\u3001R4\u4e4b\u95f4\u5b58\u5728\u5982\u4e0a\u56fe\u6240\u793a\u7684\u6bd4\u4f8b\uff0c\u56e0\u4e3a\u653e\u5927\u5668\u5de5\u4f5c\u5728\u7ebf\u6027\u533a\uff0c\u6240\u4ee5\u540c\u76f8\u7aef\u53cd\u76f8\u7aef\u7684\u7535\u538b\u5e94\u8be5\u662f\u76f8\u7b49\u7684\uff0c\u5373\u6ee1\u8db3\u865a\u77ed\u865a\u65ad\u7684\u6761\u4ef6\uff0c\u5047\u8bbe\u540c\u76f8\u7aef\u7684\u7535\u538b\u4e3aVx\uff0c\u8fd0\u653e\u8f93\u51fa\u7535\u538b\u4e3aVo\uff0c\u5219\u5b58\u5728\u4ee5\u4e0b\u5173\u7cfb\uff1a<\/p>\n<p align=\"center\">(V1-Vx)\/R1 = (Vx-Vo)\/R2<\/p>\n<p align=\"center\">Vx\/R3 + Vx\/RL = (Vo-Vx)\/R4<\/p>\n<p>\u628a1\u5f0f\u7684Vo\u89e3\u51fa\u6765\uff0c\u4ee3\u51652\u5f0f\uff0c\u5e76\u628a2\u5f0f\u7684Vx\/R3\u79fb\u5230\u53f3\u8fb9\uff0c\u5373\u53ef\u5f97\u5230<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/3.jpg\"><img loading=\"lazy\" title=\"3\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"3\" src=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/3_thumb.jpg\" width=\"226\" height=\"50\"><\/a><\/p>\n<p>\u56e0\u4e3aR1R4=R2R3\uff0c\u6240\u4ee5\u53ef\u5f97RL\u4e0a\u7684\u7535\u6d41\u4e3a-V1\/R3\u3002<\/p>\n<p>\u795e\u5947\u5427\uff0c\u6700\u540e\u5f97\u5230\u7684RL\u4e0a\u7684\u7535\u6d41\uff0c\u4ec5\u4e0eR3\u548c\u8f93\u5165\u7535\u538b\u6709\u5173\uff0c\u800c\u4e14\u662f\u7ebf\u6027\u5173\u7cfb\u3002\u6700\u91cd\u8981\u7684\u662f\uff0c\u8fd9\u4e2a\u7535\u6d41\u6e90\u4e0d\u50cf\u5176\u4ed6\u7684\u7535\u6d41\u6e90\u3002\u56e0\u4e3a\u8d1f\u8f7d\u7535\u963b\u53ef\u4ee5\u76f4\u63a5\u63a5\u5730\uff0c\u800c\u4e14\u8d1f\u8f7d\u7535\u963b\u4e0a\u7684\u7535\u6d41\u53ef\u6b63\u53ef\u8d1f\uff0c\u5177\u4f53\u5927\u5c0f\u4e0e\u6b63\u8d1f\u7531\u8f93\u5165\u7535\u538b\u6765\u51b3\u5b9a\u3002<\/p>\n<p>\u53e6\u5916\u5728\u7f51\u4e0a\u8fd8\u53d1\u73b0\u4e86\u5176\u4ed6\u5f62\u5f0f\u7684Howland\u7535\u6d41\u6e90\uff0c\u5176\u539f\u7406\u90fd\u4e00\u6837\uff0c\u5f62\u5f0f\u4e0d\u540c\u800c\u5df2\uff1a<\/p>\n<p>1.\u4e00\u770b\u914d\u8272\u5c31\u77e5\u9053\u662f\u51cc\u7279\u7684\u7535\u8def\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/4.jpg\"><img loading=\"lazy\" title=\"4\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"4\" src=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/4_thumb.jpg\" width=\"540\" height=\"428\"><\/a><\/p>\n<p>2.\u4e2d\u95f4\u7684Logo\u70e6\u6b7b\u4e2a\u4eba\uff1a<\/p>\n<p align=\"center\">\n<p><a href=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/5.jpg\"><img loading=\"lazy\" title=\"5\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; float: none; padding-top: 0px; padding-left: 0px; margin-left: auto; display: block; padding-right: 0px; border-top-width: 0px; margin-right: auto\" border=\"0\" alt=\"5\" src=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/5_thumb.jpg\" width=\"418\" height=\"225\"><\/a><\/p>\n<p>\u5230\u4e86\u73b0\u5728\uff0c\u518d\u6765\u56de\u60f3\u4e00\u4e0b\u4e3a\u4ec0\u4e48\u53cd\u9988\u8981\u63a5\u5728\u540c\u76f8\u7aef\uff1a<\/p>\n<p>\u5bf9\u4e8e\u4e00\u4e2a\u63a5\u5730\u7684\u8d1f\u8f7d\u800c\u8a00\uff0c\u5f53\u7535\u6d41\u8d8a\u5927\u7684\u65f6\u5019\uff0c\u8d8a\u9700\u8981\u8d1f\u8f7d\u4e0a\u7684\u7535\u538b\u53d8\u5927\u3002\u82e5\u5c06\u201c\u9700\u8981\u8f93\u5165\u7535\u538b\u53d8\u5927\u201d\u8fd9\u4e2a\u4fe1\u53f7\u91cf\u53cd\u9988\u5230\u8f93\u5165\u7aef\uff0c\u90a3\u4e48\u80af\u5b9a\u662f\u8981\u53cd\u9988\u7ed9\u540c\u76f8\u7aef\u5566\u3002\u6240\u4ee5\uff0c\u89c1\u5230\u7684\u6240\u6709\u7684Howland\u7535\u6d41\u6e90\uff0c\u5e94\u8be5\u90fd\u5728\u8fd0\u653e\u7684\u540c\u76f8\u7aef\u4e0a\u52a0\u4e86\u53cd\u9988\u3002<\/p>\n<h1><span id=\"2VF\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">2.\u7ebf\u6027VF\u8f6c\u6362\u7535\u8def\u7684\u5b9e\u73b0<\/span><\/span><\/h1>\n<p>\u8fd9\u5468\u7684\u7535\u5b50\u8bbe\u8ba1\u7ade\u8d5b\u6a21\u62df\u9898\u76ee\u4e2d\uff0c\u9700\u8981\u540c\u5b66\u5b9e\u73b0\u7ebf\u6027VF\u8f6c\u6362\u7535\u8def\uff0c\u4e0d\u5f97\u4f7f\u7528\u73b0\u6210\u7684VF\u8f6c\u6362\u5668\u3002\u4e5f\u5373\u968f\u7740\u8f93\u5165\u7535\u538b\u7684\u7ebf\u6027\u589e\u5927\uff0c\u8f93\u51fa\u4fe1\u53f7\u7684\u9891\u7387\u4e5f\u7ebf\u6027\u589e\u5927\u3002<\/p>\n<p>\u5468\u4e8c\u7684\u65f6\u5019\uff0cW\u8001\u5e08\u7a81\u7136\u6253\u6765\u7535\u8bdd\uff0c\u8bf4\u8fd9\u4e2a\u7ebf\u6027\u7684\u6307\u6807\u53ef\u80fd\u505a\u4e0d\u51fa\u6765\u3002<\/p>\n<p>\u987f\u65f6\u6211\u4e5f\u614c\u4e86\uff1a\u660e\u660e\u8ba1\u7b97\u7684\u662f\u53ef\u4ee5\u505a\u51fa\u7ebf\u6027\u6765\u7684\uff0c\u4e3a\u4ec0\u4e48W\u8001\u5e08\u53c8\u8bf4\u4e0d\u53ef\u4ee5\u4e48\uff1f\u7136\u540e\u5c31\u5f00\u59cb\u5206\u6790\u4e4b\u3002<\/p>\n<p>\u4e4b\u524d\u8bbe\u8ba1\u7684\u4e00\u4e2aVF\u8f6c\u6362\u7535\u8def\u662f\u91c7\u7528\u79ef\u5206\u7535\u8def+\u5355\u7a33\u6001\u89e6\u53d1\u5668\u5b9e\u73b0\u7684\u3002\u7535\u8def\u56fe\u5982\u4e0b\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/6.jpg\"><img loading=\"lazy\" title=\"6\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"6\" src=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/6_thumb.jpg\" width=\"505\" height=\"380\"><\/a><\/p>\n<p>\u5176\u4e2d\u8fd0\u653eLM324\u7684\u4f9b\u7535\u91c7\u7528S9VP\u4e0eSGND\u3002S9VP\u5373\u6b639V\uff0cSGND\u53730V\u3002<\/p>\n<p>\u539f\u7406\u5c31\u662f\u79ef\u5206\u7535\u8def+\u5355\u7a33\u6001\u89e6\u53d1\u5668\u3002\u539f\u7406\u60f3\u5fc5\u6211\u5df2\u7ecf\u4e0d\u5fc5\u9610\u8ff0\uff0c\u5728\u6b64\u6211\u4e3b\u8981\u8bf4\u4e0b\u5f53\u65f6\u662f\u600e\u4e48\u4e00\u6b65\u4e00\u6b65\u8bbe\u8ba1\u51fa\u8fd9\u4e2a\u7535\u8def\u7684\u3002<\/p>\n<p>1.VF\u8f6c\u6362\u5668\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u538b\u63a7\u632f\u8361\u5668\u3002\u800c\u666e\u901a\u7684\u538b\u63a7\u632f\u8361\u5668\u901a\u8fc7\u63a7\u5236\u7535\u5bb9\u5145\u7535\u7684\u622a\u6b62\u7535\u5e73\u800c\u8fbe\u5230\u63a7\u5236\u632f\u8361\u5668\u8f93\u51fa\u9891\u7387\u7684\u76ee\u7684\u3002\u800c\u8fd9\u79cd\u632f\u8361\u5668\uff0c\u8f93\u5165\u7684\u7535\u538b\u4e0e\u5468\u671f\u5bc6\u5207\u76f8\u5173\uff0c\u5728\u4e00\u5b9a\u7684\u8303\u56f4\u5185\u5468\u671f\u8ddf\u8f93\u5165\u7535\u538b\u6210\u7ebf\u6027\u5173\u7cfb\u3002<\/p>\n<p>2.\u4f46\u662f\u8fd9\u79cd\u601d\u8def\u8bbe\u8ba1\u5f97\u5230\u7684\u7535\u8def\u4e0d\u80fd\u6ee1\u8db3\u9891\u7387\u968f\u7740\u8f93\u51fa\u7535\u538b\u7684\u7ebf\u6027\u589e\u957f\u3002\u4f46\u662f\u5374\u8ba9\u6211\u4eec\u5f97\u5230\u4e86\u4e00\u4e2a\u91cd\u8981\u7684\u5173\u7cfb\u5f0f\uff1a<\/p>\n<p>\u5728\u4e00\u5b9a\u7684\u8303\u56f4\u5185\uff0cVi\u4e0eT\u6210\u6bd4\u4f8b\u589e\u957f\uff0c\u5373Vi\/T=C\uff08C\u4e3a\u67d0\u4e00\u5e38\u6570\uff09<\/p>\n<p>\u8981\u5b9e\u73b0\u9891\u7387\uff0c\u800c\u4e0d\u662f\u5468\u671f\u968f\u8f93\u5165\u7535\u538b\u7ebf\u6027\u589e\u957f\uff0c\u6211\u4eec\u8981\u5b9e\u73b0Vi\u00d7T=C\uff08C\u4e3a\u67d0\u4e00\u5e38\u6570\uff09\u7684\u7535\u8def\u3002<\/p>\n<p>3.\u641c\u7d22\u6211\u4eec\u4e4b\u524d\u9047\u5230\u7684\u7535\u8def\uff0c\u6211\u4eec\u5f88\u5feb\u4fbf\u77e5\u9053\u4e86\uff0c\u79ef\u5206\u7535\u8def\u91cc\u9762\uff0c\u6709\uff1a<\/p>\n<p align=\"center\"><a href=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/7.jpg\"><img loading=\"lazy\" title=\"7\" style=\"border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px\" border=\"0\" alt=\"7\" src=\"http:\/\/img.liuwenhao.ink\/img\/b8b8e6f0e8e6_15B0\/7_thumb.jpg\" width=\"150\" height=\"47\"><\/a><\/p>\n<p align=\"left\">&nbsp;&nbsp;&nbsp; \u6211\u4eec\u5df2\u7ecf\u770b\u5230\u4e86Vi\u00d7T\u4e3a\u4e00\u4e2a\u5e38\u6570\u7684\u5e0c\u671b\u4e86\u3002\u82e5\u8f93\u5165\u4fe1\u53f7\u4e3a\u9636\u8dc3\u4fe1\u53f7\uff0c\u90a3\u4e48\u5c31\u6709\uff1a<\/p>\n<p align=\"center\">Uo(t)=-Ut\/RC<\/p>\n<p align=\"left\">&nbsp;&nbsp;&nbsp; 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5.\u5355\u7a33\u6001\u89e6\u53d1\u5668\u7684\u975e\u7a33\u6001\u8f93\u51fa\u7684\u65f6\u95f4\u53ef\u4ee5\u8c03\u8282\uff0c\u4f46\u662f\u96be\u4ee5\u6839\u636e\u8f93\u5165\u7684\u9891\u7387\u800c\u81ea\u52a8\u8c03\u8282\u3002\u6240\u4ee5\uff0c\u5982\u679c\u8981\u4fdd\u8bc1\u632f\u8361\u5668\u7684\u5360\u7a7a\u6bd4\u6052\u5b9a\u4e3a50%\u662f\u4e00\u4ef6\u5f88\u56f0\u96be\u7684\u4e8b\u60c5\u3002\u800c\u5018\u82e5\u628a\u975e\u7a33\u6001\u7684\u65f6\u95f4\u5c3d\u53ef\u80fd\u7684\u7f29\u77ed\uff0c\u8ba9\u6574\u4e2a\u9707\u8361\u4fe1\u53f7\u8f93\u51fa\u5468\u671f\u7684\u65f6\u95f4\u4e2d\uff0c\u975e\u7a33\u6001\u7684\u65f6\u95f4\u5360\u7528\u5c0f\u5230\u53ef\u4ee5\u5ffd\u7565\u7684\u65f6\u5019\uff0c\u6574\u4e2a\u9707\u8361\u8f93\u51fa\u7684\u9891\u7387\u5c31\u53ea\u8ddfT\u76f8\u5173\u4e86\u3002<\/p>\n<p align=\"left\">&nbsp;&nbsp;&nbsp; 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