{"id":9384,"date":"2022-08-24T15:14:39","date_gmt":"2022-08-24T07:14:39","guid":{"rendered":"http:\/\/www.szryc.com\/?p=9384"},"modified":"2022-08-24T15:14:39","modified_gmt":"2022-08-24T07:14:39","slug":"%e4%bd%bf%e7%94%a8%e6%99%b6%e4%bd%93%e7%ae%a1%e6%9e%84%e5%bb%ba%e5%92%8c%e6%b5%8b%e8%af%95%e4%b8%80%e4%b8%aa%e7%ae%80%e5%8d%95%e7%9a%84%e6%81%92%e6%b5%81%e6%ba%90%e7%94%b5%e8%b7%af","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=9384","title":{"rendered":"\u4f7f\u7528\u6676\u4f53\u7ba1\u6784\u5efa\u548c\u6d4b\u8bd5\u4e00\u4e2a\u7b80\u5355\u7684\u6052\u6d41\u6e90\u7535\u8def"},"content":{"rendered":"
\u3000\u6211\u4eec\u4e2d\u8bb8\u591a\u4f7f\u7528\u8fc7\u6a21\u62df\u7535\u8def<\/u>\u7684\u4eba\u7ecf\u5e38\u4f1a\u5728\u7535\u8def<\/u>\u8bbe\u8ba1\u4e2d\u9047\u5230\u7535\u538b\u6e90\u548c\u7535\u6d41<\/u>\u6e90\u8fd9\u4e24\u4e2a\u672f\u8bed\u3002\u867d\u7136\u4efb\u4f55\u63d0\u4f9b\u6052\u5b9a\u7535\u538b\u7684\u4e1c\u897f\uff08\u5982\u7b80\u5355\u7684 5V\u00a0USB<\/u>\u00a0\u8f93\u51fa\u6216 12V\u00a0\u9002\u914d\u5668<\/u>\uff09\u90fd\u53ef\u4ee5\u88ab\u89c6\u4e3a\u7535\u538b\u6e90\uff0c\u4f46\u672f\u8bed\u7535\u6d41\u6e90\u4f3c\u4e4e\u59cb\u7ec8\u662f\u4e2a\u8c1c\u3002\u8bb8\u591a\u7535\u8def\uff0c\u5c24\u5176\u662f\u6d89\u53ca\u8fd0\u7b97\u653e\u5927\u5668<\/u>\u6216\u5f00\u5173<\/u>\u7535\u8def\u7684\u7535\u8def\uff0c\u90fd\u9700\u8981\u60a8\u4f7f\u7528\u6052\u6d41\u6e90\u624d\u80fd\u4f7f\u8bbe\u8ba1\u5de5\u4f5c\u3002\u90a3\u4e48\u7535\u6d41\u6e90\u662f\u4ec0\u4e48\u610f\u601d\u5462\uff1f\u5b83\u5c06\u5982\u4f55\u5de5\u4f5c\u4ee5\u53ca\u4e3a\u4ec0\u4e48\u9700\u8981\u5b83\uff1f<\/p>\n
\u3000\u3000\u5728\u672c\u6559\u7a0b<\/u>\u4e2d\uff0c\u6211\u4eec\u5c06\u627e\u5230\u8fd9\u4e9b\u95ee\u9898\u7684\u7b54\u6848\uff0c\u6211\u4eec\u8fd8\u5c06\u4f7f\u7528\u6676\u4f53\u7ba1<\/u>\u6784\u5efa\u548c\u6d4b\u8bd5<\/u>\u4e00\u4e2a\u7b80\u5355\u7684\u6052\u6d41\u6e90\u7535\u8def\u3002\u672c\u6559\u7a0b\u4e2d\u4f7f\u7528\u7684\u7535\u8def\u80fd\u591f\u4e3a\u60a8\u7684\u8d1f\u8f7d\u63d0\u4f9b100mA \u7684\u6052\u5b9a\u7535\u6d41\uff0c\u4f46\u60a8\u53ef\u4ee5\u6839\u636e\u60a8\u7684\u8bbe\u8ba1\u8981\u6c42\u4f7f\u7528\u7535\u4f4d\u5668<\/u>\u5bf9\u5176\u8fdb\u884c\u4fee\u6539\u3002\u5f88\u6709\u8da3\u5427\uff01\u6240\u4ee5\u8ba9\u6211\u4eec\u5f00\u59cb\u5427\u3002<\/p>\n
\u3000\u3000\u4ec0\u4e48\u662f\u6052\u6d41 \uff08CC\uff09 \u6e90\uff1f<\/p>\n
\u3000\u3000\u901a\u5e38\uff0c\u5f53\u7535\u6e90<\/u>\u5355\u5143\u9a71\u52a8\u8d1f\u8f7d\u65f6\uff0c\u53ef\u80fd\u6709\u4e24\u79cd\u53ef\u80fd\u7684\u64cd\u4f5c\u6a21\u5f0f\uff0c\u4e00\u79cd\u662f\u6052\u538b \uff08CV\uff09\u64cd\u4f5c\u6a21\u5f0f\uff0c\u53e6\u4e00\u79cd\u662f\u6052\u6d41 \uff08CC\uff09 \u6a21\u5f0f\u64cd\u4f5c\u3002<\/p>\n
\u3000\u3000\u5728 CV \u6a21\u5f0f\u4e0b\uff0c\u7535\u6e90\u4f7f\u8f93\u51fa\u7535\u538b\u6052\u5b9a\uff0c\u5e76\u6839\u636e\u8d1f\u8f7d\u7535\u963b<\/u>\u7684\u9700\u8981\u6539\u53d8\u8f93\u51fa\u7535\u6d41\u3002\u6700\u597d\u7684\u4f8b\u5b50\u662f\u60a8\u76845V USB \u7aef\u53e3\uff0c\u5176\u4e2d\u8f93\u51fa\u7535\u538b\u56fa\u5b9a\u4e3a 5V\uff0c\u4f46\u6839\u636e\u8d1f\u8f7d\u7535\u6d41\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u5982\u679c\u4f60\u8fde\u63a5\u4e00\u4e2a\u5c0f\u7684\u00a0LED<\/u>\uff0c\u5b83\u4f1a\u6d88\u8017\u66f4\u5c11\u7684\u7535\u6d41\uff0c\u5982\u679c\u4f60\u8fde\u63a5\u4e00\u4e2a\u66f4\u5927\u7684 LED\uff0c\u5b83\u4f1a\u6d88\u8017\u66f4\u591a\u7684\u7535\u6d41\uff0c\u4f46 LED \u4e24\u7aef\u7684\u7535\u538b\u5c06\u59cb\u7ec8\u4e3a 5V\u3002<\/p>\n
\u3000\u3000\u5728 CC \u6a21\u5f0f\u4e0b\uff0c\u7406\u60f3\u7684\u7535\u6d41\u6e90\u7535\u6e90\u4f7f\u8f93\u51fa\u7535\u6d41\u6052\u5b9a\uff0c\u5e76\u6839\u636e\u8d1f\u8f7d\u7535\u963b\u7684\u8981\u6c42\u6539\u53d8\u8f93\u51fa\u7535\u538b\u3002\u4e00\u4e2a\u4f8b\u5b50\u662f\u6052\u6d41\u6a21\u5f0f\u4e0b\u7684 12V\u00a0\u7535\u6c60<\/u>\u5145\u7535\u5668\uff0c\u5176\u4e2d\u5145\u7535\u7535\u6d41\u5c06\u7531\u7535\u538b\u53d8\u5316\u6765\u56fa\u5b9a\u3002\u5982\u679c\u60a8\u7684\u7535\u6c60\u4e3a 10.5V\uff0c\u5982\u679c\u60a8\u5c06\u5176\u8fde\u63a5\u5230 1A 12V \u7535\u6c60\u5145\u7535\u5668\uff0c\u5219\u5145\u7535\u5668\u7684\u8f93\u51fa\u7535\u6d41\u5c06\u59cb\u7ec8\u4e3a 1A\uff0c\u4f46\u8f93\u51fa\u7535\u538b\u5c06\u53d1\u751f\u53d8\u5316\u4ee5\u4fdd\u6301\u8be5 1A \u5145\u7535\u7535\u6d41\u3002\u6240\u4ee5\u8fd9\u5c31\u662f\u9700\u8981\u6052\u6d41\u7535\u8def\u7684\u5730\u65b9\uff0c\u5176\u4ed6\u4f8b\u5b50\u53ef\u4ee5\u662f\u6052\u6d41 LED \u9a71\u52a8\u7535\u8def\uff0c\u5176\u4e2d\u901a\u8fc7 LED \u7684\u7535\u6d41\u5fc5\u987b\u662f\u6052\u5b9a\u7684\u3002<\/p>\n
\u3000\u3000\u4f7f\u7528\u6676\u4f53<\/u>\u7ba1\u7684\u7b80\u5355 100mA \u6052\u6d41\u6e90<\/p>\n
\u3000\u3000\u5728\u8fd9\u4e2a\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u5c06\u53ea\u4f7f\u7528 4 \u4e2a\u7ec4\u4ef6\u6784\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u6676\u4f53\u7ba1\u6052\u6d41\u6e90\u53d1\u751f\u5668\u3002\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u4fbf\u5b9c\u7684\u7535\u8def\uff0c\u53ef\u4ee5\u4f7f\u7528 5V \u7535\u6e90\u63d0\u4f9b100mA \u6052\u6d41\u6e90\u3002\u5b83\u8fd8\u5c06\u6709\u4e00\u4e2a\u7535\u4f4d\u5668\u6765\u63a7\u5236 1 \u5230 100mA \u8303\u56f4\u5185\u7684\u7535\u6d41\u8f93\u51fa\u3002\u5373\u4f7f\u8d1f\u8f7d\u7535\u963b\u53d1\u751f\u53d8\u5316\uff0c\u5b83\u4e5f\u4f1a\u63d0\u4f9b\u7a33\u5b9a\u7684\u7535\u6d41\u3002\u5f53\u7535\u8def\u9700\u8981\u7a33\u5b9a\u7684\u7535\u6d41\u4f9b\u5e94\u800c\u6ca1\u6709\u6ce2\u52a8\u65f6\uff0c\u8fd9\u5c06\u5f88\u6709\u5e2e\u52a9\u3002\u4e4b\u524d\u6211\u4eec\u8fd8\u6784\u5efa\u4e86\u5176\u4ed6\u7c7b\u578b\u7684\u7535\u6d41\u6e90\u7535\u8def\uff0c\u79f0\u4e3aHowland \u7535\u6d41\u6cf5\u7535\u8def\u548c\u7535\u6d41\u955c\u7535\u8def\uff0c\u6709\u5174\u8da3\u7684\u4e5f\u53ef\u4ee5\u770b\u770b\u3002\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u770b\u770b\u8fd9\u4e2a\u9879\u76ee\u6240\u9700\u7684\u6750\u6599\u3002<\/p>\n
\u3000\u3000\u6240\u9700\u6750\u6599\uff1a<\/p>\n
\u3000\u3000TL431<\/p>\n
\u3000\u3000BC547<\/p>\n
\u3000\u30002k \u7535\u963b 1%<\/p>\n
\u3000\u300010k\u53ef\u53d8\u7535\u963b<\/p>\n
\u3000\u300022R 1%\u7535\u963b<\/p>\n
\u3000\u30005V DC \u9002\u914d\u5668\u6216 PSU \u5355\u5143\u3002<\/p>\n
\u3000\u3000\u6839\u636e\u9700\u8981\u4e0d\u540c\u7c7b\u578b\u7684\u8d1f\u8f7d\u7535\u963b\u3002<\/p>\n
\u3000\u3000\u9762\u5305\u677f\u548c\u8fde\u63a5\u7535\u7ebf<\/u><\/p>\n
\u3000\u3000\u4e07\u7528\u8868<\/u>\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n \u3000\u3000\u5982\u4e0a\u8ff0 BOM \u6240\u8ff0\uff0c\u8be5\u7535\u8def\u4ec5\u7531\u4e24\u4e2a\u6709\u6e90\u5143\u4ef6 TL431 \u548c BC547 \u7ec4\u6210\u3002TL431 \u662f\u4e00\u6b3e\u4f7f\u7528 2.5V \u7535\u538b\u57fa\u51c6\u7684\u5e76\u8054\u7a33\u538b\u5668\u3002\u5b83\u652f\u6301 1-100mA \u7684\u9634\u6781\u7535\u6d41\uff0c\u7528\u4e8e\u5206\u6d41\u76f8\u5173\u64cd\u4f5c\u3002\u8be5\u7ec4\u4ef6\u7684\u5c01\u88c5\u4e0e\u901a\u7528\u901a\u5b54<\/u>\u6676\u4f53\u7ba1\u76f8\u540c\u3002\u5176\u4ed6\u7ec4\u4ef6\u662f\u65e0\u6e90\u7ec4\u4ef6\u3002\u7535\u963b\u5668<\/u>\u9700\u8981\u6709 1% \u7684\u5bb9\u5dee\u624d\u80fd\u83b7\u5f97\u51c6\u786e\u7684\u8f93\u51fa\u3002<\/p>\n \u3000\u3000\u6052\u6d41\u6e90\u7535\u8def\u56fe\uff1a<\/p>\n \u3000\u3000\u4f7f\u7528\u6676\u4f53\u7ba1\u9879\u76ee\u7684\u6052\u6d41\u6e90\u7535\u8def\u56fe\u5982\u4e0b\u6240\u793a\u3002<\/p>\n \u3000\u3000\u4e0a\u8ff0\u7535\u8def\u5b8c\u5168\u8fde\u63a5\u5728 5V \u7ebf\u8def\u4e2d\u3002\u8f93\u51fa\u8d1f\u8f7d\u9700\u8981\u8fde\u63a5\u5728 Output \u548c GND \u8fde\u63a5\u4e4b\u95f4\u3002\u5728\u4e0a\u9762\u7684\u793a\u610f\u56fe\u4e2d\uff0cBC547 \u4f5c\u4e3a\u4f20\u8f93\u6676\u4f53\u7ba1\u5de5\u4f5c\uff0c\u66f4\u591a\u5185\u5bb9\u5c06\u5728\u5de5\u4f5c\u90e8\u5206\u8ba8\u8bba\u3002<\/p>\n \u6052\u6d41\u7535\u8def\u7684\u91cd\u8981\u8ba1\u7b97<\/p>\n \u4e0a\u8ff0\u7535\u8def\u7684\u8f93\u51fa\u7535\u6d41\u53d6\u51b3\u4e8e\u4ee5\u4e0b\u516c\u5f0f\u2014\u2014\u53ef\u7528\u4e8e\u8ba1\u7b97\u6052\u6d41\u6e90\u7535\u8def\u7684\u8f93\u51fa\u7535\u6d41\u3002<\/p>\n <\/p>\n <\/p>\n \u5bf9\u4e8e\u8fd9\u4e2a\u7535\u8def\uff0c<\/p>\n <\/p>\n <\/p>\n \u6240\u4ee5\uff0c<\/p>\n <\/p>\n <\/p>\n R4 \u53ef\u7528\u7684\u6700\u4f4e\u63a5\u8fd1\u7535\u963b\u503c\u4e3a 22 \u6b27\u59c6\u3002\u73b0\u5728\uff0c\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684\u516c\u5f0f\u627e\u5230\u53ef\u53d8\u7535\u963b\u5668\u6216\u7535\u4f4d\u5668\u503c\u3002\u4ee5\u524d\uff0c\u6700\u5927\u53ef\u7528\u7535\u6d41 100mA \u662f\u901a\u8fc7 22 \u6b27\u59c6\u7535\u963b\u5b9e\u73b0\u7684\u3002\u8fd9\u6b21\u7535\u4f4d\u5668\u4f1a\u5c06\u7535\u6d41\u8f93\u51fa\u964d\u4f4e\u5230\u6700\u4f4e\u6c34\u5e73\u3002<\/p>\n \u7531\u4e8e TL431 \u6240\u9700\u7684\u6700\u5c0f\u9634\u6781\u7535\u6d41\u4e3a 1mA\uff0c\u56e0\u6b64\u6700\u597d\u5047\u8bbe\u6700\u4f4e\u7535\u6d41\u4e3a 2mA\u3002\u56e0\u6b64\uff0c\u901a\u8fc7\u4f7f\u7528\u76f8\u540c\u7684\u516c\u5f0f\uff0c<\/p>\n <\/p>\n <\/p>\n \u56e0\u6b64\uff0c\u53ef\u7528\u7684\u6700\u4f4e\u63a5\u8fd1\u503c 2.2k \u7535\u4f4d\u5668\u53ef\u7528\u4e8e\u7535\u6d41\u63a7\u5236\u3002\u6700\u540e\u7684\u8ba1\u7b97\u662f\u4f7f\u7528\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\u504f\u7f6e\u7535\u963bR1 \u503c\u3002<\/p>\n <\/p>\n <\/p>\n \u5bf9\u4e8e\u8fd9\u4e2a\u7535\u8def\uff0c<\/p>\n <\/p>\n <\/p>\n \u3000\u3000\u56e0\u6b64\uff0c\u53ef\u7528\u7684\u6700\u4f4e\u63a5\u8fd1\u503c R1 \u53ef\u4ee5\u662f 2.2k\u3002<\/p>\n \u3000\u3000\u6052\u6d41\u7535\u8def\u5de5\u4f5c\uff1a<\/p>\n \u3000\u3000\u6676\u4f53\u7ba1 BC547 \u7528\u4f5c\u7531\u504f\u7f6e\u7535\u963b\u5668 R1 \u548c\u5206\u6d41\u8c03\u8282\u5668 TL431 \u63a7\u5236\u7684\u4f20\u8f93\u6676\u4f53\u7ba1\u3002\u6676\u4f53\u7ba1\u57fa\u6781\u5b9e\u9645\u4e0a\u8fde\u63a5\u5728\u5206\u6d41\u5668\u4e0a\u3002\u8be5\u5206\u6d41\u5668\u7535\u8def\u662f\u4f7f\u7528\u504f\u7f6e\u7535\u963b\u5668\u548c\u5206\u6d41\u7a33\u538b\u5668\u5236\u6210\u7684\u3002TL431 \u901a\u8fc7\u68c0\u6d4b\u53c2\u8003\u7535\u538b\u5e76\u63a7\u5236\u4f20\u8f93\u6676\u4f53\u7ba1 BC547 \u6765\u8c03\u8282\u6052\u5b9a\u7535\u6d41\u3002\u8be5\u7535\u8def\u6784\u5efa\u5728\u9762\u5305\u677f\u4e0a\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n \u3000\u3000\u6d4b\u8bd5\u6052\u6d41\u6e90\u7535\u8def<\/p>\n \u3000\u3000\u7535\u8def\u677f<\/u>\u51c6\u5907\u597d\u540e\uff0c\u6211\u4f7f\u7528 5V \u76f4\u6d41\u7535\u6e90\u4e3a\u7535\u8def\u901a\u7535\u5e76\u5f00\u59cb\u5bf9\u5176\u8fdb\u884c\u6d4b\u8bd5\u3002\u6211\u5728\u8f93\u51fa\u7aef\u4f7f\u7528\u4e86\u4e0d\u540c\u7684\u8d1f\u8f7d\uff08\u4e0d\u540c\u7684\u7535\u963b\u503c\uff09\uff0c\u5e76\u786e\u4fdd\u7535\u6d41\u59cb\u7ec8\u4fdd\u6301\u6052\u5b9a\u3002\u6211\u7528\u4e07\u7528\u8868\u6d4b\u91cf<\/u>\u7535\u8def\u7684\u8f93\u51fa\u7535\u6d41\uff0c\u5b83\u59cb\u7ec8\u5728 100mA \u5de6\u53f3\uff0c\u5982\u4e0b\u56fe\u6240\u793a<\/p>\n \u3000\u3000\u5b8c\u6574\u7684\u6d4b\u8bd5\u89c6\u9891\u53ef\u4ee5\u5728\u672c\u9875\u5e95\u90e8\u627e\u5230\u3002\u5982\u679c\u60a8\u6709\u4efb\u4f55\u95ee\u9898\uff0c\u8bf7\u5c06\u5b83\u4eec\u7559\u5728\u4e0b\u9762\u7684\u8bc4\u8bba\u90e8\u5206\u6216\u4f7f\u7528\u8bba\u575b<\/u>\u8fdb\u884c\u5176\u4ed6\u6280\u672f\u67e5\u8be2\u3002<\/p>\n \u3000\u3000\u6052\u6d41\u6e90\u7535\u8def\u7684\u5e94\u7528<\/p>\n \u3000\u3000\u5728 LED \u7167\u660e\u7cfb\u7edf\u4e2d\uff0cLED \u9a71\u52a8\u76f8\u5173\u64cd\u4f5c\u9700\u8981\u6052\u6d41\u6e90\u3002\u4e0e\u4fbf\u643a\u5f0f\u8bbe\u5907\u4e00\u6837\uff0c\u7535\u6c60\u5145\u7535\u7535\u8def\u4e5f\u4f7f\u7528\u6052\u6d41\u6e90\u3002\u4e0b\u9762\u5217\u51fa\u4e86\u4f7f\u7528\u6052\u6d41\u6e90\u7684\u4e00\u5c0f\u90e8\u5206\u5e94\u7528<\/p>\n \u3000\u3000\u653e\u5927\u5668<\/u>\u7cfb\u7edf\u3002<\/p>\n \u3000\u3000\u592a\u9633\u80fd\u7cfb\u7edf<\/p>\n \u3000\u3000\u7535\u78c1\u94c1<\/u><\/p>\n \u3000\u3000\u7528\u4e8e\u7a33\u5b9a\u901f\u5ea6\u7684\u7535\u673a<\/u>\u7cfb\u7edf\u3002<\/p>\n \u3000\u3000\u970d\u5c14\u6548\u5e94\u4f20\u611f\u5668<\/u>\u3002<\/p>\n \u3000\u3000\u7a33\u538b\u5668\u7535\u8def\u504f\u7f6e\u9f50\u7eb3\u4e8c\u6781\u7ba1<\/u>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":" \u3000\u6211\u4eec\u4e2d\u8bb8\u591a\u4f7f\u7528\u8fc7\u6a21\u62df\u7535\u8def\u7684\u4eba\u7ecf\u5e38\u4f1a\u5728\u7535\u8def\u8bbe\u8ba1\u4e2d\u9047\u5230\u7535\u538b\u6e90\u548c\u7535\u6d41\u6e90\u8fd9\u4e24\u4e2a\u672f\u8bed\u3002\u867d\u7136\u4efb\u4f55\u63d0\u4f9b\u6052\u5b9a\u7535\u538b\u7684\u4e1c\u897f\uff08\u5982\u7b80 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/9384"}],"collection":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9384"}],"version-history":[{"count":1,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/9384\/revisions"}],"predecessor-version":[{"id":9390,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/9384\/revisions\/9390"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9384"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}I out = V ref \/R4 + I KA<\/pre>\n
\u6211\u8f93\u51fa = 100 \u6beb\u5b89(.100A)\r\nV\u53c2\u8003 = 2.5V\r\nI KA = 1mA (.001A) [\u6ce8\uff1a\u6700\u5c0f\u504f\u7f6e\u7535\u6d41]<\/pre>\n
I out = V ref \/R4 + I KA\r\n.100 = 2.5\/R4 + .001\r\n.100 - .001 = 2.5\/R4\r\nR4 = 2.5\/.099\r\nR4 = 25 \u6b27\u59c6\uff08\u5927\u7ea6\uff09<\/pre>\n
I out = V ref \/VR<\/u> 1 + I KA \r\n.002 = 2.5\/VR 1 + .001\r\n.002 - .001 = 2.5\/VR 1 \r\n.001 = 2.5\/VR 1 \r\nVR 1 = 2.5K<\/pre>\n
R1 = V in \/(I out \/hFE + I KA )<\/pre>\n
\u8f93\u51fa= 100mA (.100A )\r\nV in = 5V\r\nhFE = 100\uff08\u6700\u5927\u503c\uff09\r\nIKA = 1mA (.001A) [\u6ce8\uff1a\u6700\u5c0f\u504f\u7f6e\u7535\u6d41]\r\nR1 = V in \/(I out \/hFE + I KA )\r\nR1 = 5\/(.100\/100 + .001)\r\nR1 = 2.5 \u5343\u6b27<\/pre>\n