{"id":2207,"date":"2019-03-12T02:10:04","date_gmt":"2019-03-12T02:10:04","guid":{"rendered":""},"modified":"2019-03-12T10:10:28","modified_gmt":"2019-03-12T02:10:28","slug":"%e7%99%bd%e5%85%89led%e6%a8%a1%e7%bb%84%e9%a9%b1%e5%8a%a8%e7%94%b5%e8%b7%af%e8%ae%be%e8%ae%a1%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=2207","title":{"rendered":"\u767d\u5149LED\u6a21\u7ec4\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\u65b9\u6848"},"content":{"rendered":"

\n\t\u7531\u4e8e\u5f53\u524d\u6e29\u5ba4\u6548\u5e94\u548c\u80fd\u6e90\u5371\u673a\u7684\u5f71\u54cd\uff0c\u4f7f\u5f97\u4eba\u4eec\u5bf9\u8282\u80fd\u6280\u672f\u8d8a\u6765\u8d8a\u5173\u6ce8\u3002LED\u7167\u660e\u5177\u6709\u8282\u80fd\u3001\u5bff\u547d\u957f\u7b49\u4f18\u70b9\uff0cLED\u7167\u660e\u6280\u672f\u4f5c\u4e3a\u65b0\u578b\u7eff\u8272\u7167\u660e\u6280\u672f\uff0c\u76ee\u524d\u7684\u5e94\u7528\u65e5\u8d8b\u5e7f\u6cdb\u3002LED\u7684\u767d\u5149\u7167\u660e\u901a\u5e38\u662f\u4f7f\u7528\u84dd\u3001\u7eff\u3001\u7ea2\u4e09\u539f\u8272\u591a\u82af\u7247LED\u6a21\u7ec4\u6784\u6210\uff0c\u7531\u4e8e\u8fd9\u79cdLED\u6a21\u7ec4\u4e2d\u6bcf\u79cdLED\u82af\u7247\u7684\u8001\u5316\u7279\u6027\u4e0d\u540c\uff0c\u56e0\u6b64\u8272\u6e29\u4f1a\u968f\u7740\u65f6\u95f4\u548c\u6e29\u5ea6\u800c\u53d1\u751f\u53d8\u5316\u3002\u8fd9\u5c31\u7ed9\u767d\u5149LED\u7684\u4f7f\u7528\u5e26\u6765\u4e86\u9650\u5236\u3002\u672c\u6587\u4e2d\u5206\u6790\u4e86\u5bf9\u81ea\u5149LED\u6a21\u7ec4\u7684\u9a71\u52a8\u6a21\u5f0f\uff0c\u63d0\u51fa\u4e86\u4e00\u79cd\u65b0\u578b\u767d\u5149LED\u6a21\u7ec4\u9a71\u52a8\u7535\u8def<\/u>\u7684\u8bbe\u8ba1\u65b9\u6848\u3002<\/p>\n

\n\t1 \u767d\u5149LED\u6a21\u7ec4\u7684\u9a71\u52a8<\/p>\n

\n\t <\/div>\n

\n\t\u5bf9\u4e8e\u4f20\u7edf\u5149\u6e90\u7684\u9a71\u52a8\u65b9\u5f0f\u4e3d\u9752\uff0c\u5927\u90fd\u662f\u4ee5\u6052\u5b9a\u7535\u538b\u7684\u5f62\u5f0f\u5b58\u5728\uff0c\u8fd9\u5c31\u4f7f\u5f97\u4f20\u7edf\u5149\u6e90\u7684\u9a71\u52a8\u5341\u5206\u7b80\u5355\u3002\u5728\u7ebf\u6027\u8303\u56f4\u5185\uff0cLED\u7684\u53d1\u5149\u5f3a\u5ea6\u4e0e\u5176\u9a71\u52a8\u7535\u6d41<\/u>\u53ca\u6b63\u5411\u538b\u964d\u6210\u6b63\u6bd4\uff0c\u5e76\u968f\u7740\u6e29\u5ea6\u800c\u53d8\u5316\uff0c\u8fd9\u5c31\u9700\u8981\u6052\u5b9a\u7684\u7535\u6d41\u6765\u9a71\u52a8LED\u3002\u9664\u6b64\u4e4b\u5916\u3002\u767d\u5149LED\u6a21\u5757\u6709\u4e00\u4e2a\u91cd\u8981\u7684\u6307\u6807\uff0c\u5c31\u662f\u8272\u6e29\u3002\u8272\u6e29\u4ee5\u7edd\u5bf9\u6e29\u5ea6K\u6765\u8868\u793a\uff0c\u67d0\u5149\u6e90\u4e0e\u9ed1\u4f53\u7684\u989c\u8272\u76f8\u540c\u65f6\uff0c\u5c31\u628a\u9ed1\u4f53\u5f53\u65f6\u7684\u7edd\u5bf9\u6e29\u5ea6\u79f0\u4e3a\u8be5\u5149\u6e90\u7684\u8272\u6e29\u3002\u767d\u5149LED\u8272\u6e29\u53d6\u51b3\u4e8e\u6240\u53d1\u51fa\u7684\u767d\u5149\u4e2d3\u79cd\u8272\u5f69\u6210\u5206\u7684\u6784\u6210\u6bd4\u4f8b\u3002<\/p>\n

\n\t\u4e3a\u4e86\u8c03\u8282\u767d\u5149LED\u6a21\u7ec4\u5149\u6e90\u7684\u8272\u6e29\uff0c\u5c31\u9700\u8981\u5bf9\u767d\u5149LED\u6a21\u7ec4\u91cc\u4e2d\u7684\u84dd\u3001\u7eff\u3001\u7ea23\u4e2aLED\u82af\u7247\u7684\u9a71\u52a8\u7535\u6d41\u8fdb\u884c\u5355\u72ec\u63a7\u5236\uff0c\u5c31\u9700\u89813\u4e2a\u72ec\u7acb\u7684\u6052\u6d41\u9a71\u52a8\u7535\u8def\u3002\u76ee\u524d\uff0c\u6052\u6d41\u9a71\u52a8\u7535\u8def\u4e00\u822c\u90fd\u91c7\u7528\u5f00\u5173\u6a21\u5f0f\u7684PWM\u63a7\u5236\u5668\u6765\u5b9e\u73b0\uff0c\u5176\u9a71\u52a8\u7535\u6d41\u7684\u8c03\u8282\u4e3b\u8981\u5206\u4e3a\u6a21\u62df\u8c03\u8282\u65b9\u5f0f\u548cPWM\u8c03\u8282\u65b9\u5f0f\u3002<\/p>\n

\n\t\u6a21\u62df\u8c03\u8282\u65b9\u5f0f\u662f\u5229\u7528PWM\u63a7\u5236\u5668\u6765\u5bf9\u9a71\u52a8\u7535\u6d41\u8fdb\u884c\u8c03\u8282\uff0c\u4ee5\u7a33\u5b9aLED\u7684\u9a71\u52a8\u7535\u6d41\uff0c\u5f97\u5230\u7a33\u5b9a\u7684\u8f93\u51fa\u5149\u5f3a\u3002\u7531\u4e8e\u901a\u5e38PWM\u63a7\u5236\u5668\u7684\u53cd\u9988\u63a7\u5236\u4fe1\u53f7\u662f\u4e00\u4e2a\u7535\u538b\u503c\uff0c\u6240\u4ee5\u6a21\u62df\u8c03\u8282\u662f\u5229\u7528\u4e00\u4e2a\u6d4b\u91cf\u7535\u963b<\/u>\u5bf9\u8f93\u51fa\u9a71\u52a8\u7535\u6d41\u8fdb\u884c\u91c7\u6837\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u53cd\u9988\u7535\u538b\u4fe1\u53f7\uff0c\u901a\u8fc7PWM\u63a7\u5236\u5668\u5bf9\u53cd\u9988\u7535\u538b\u7684\u7a33\u5b9a\uff0c\u4ece\u800c\u8fbe\u5230\u7a33\u5b9a\u8f93\u51fa\u9a71\u52a8\u7535\u6d41\u7684\u76ee\u7684\uff0c\u7535\u8def\u539f\u7406\u56fe\u5982\u56fe1\u6240\u793a\u3002<\/p>\n

\n\t\"\u767d\u5149LED\u6a21\u7ec4\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u4f7f\u7528\u6a21\u62df\u65b9\u5f0f\u8c03\u8282\u8f93\u51fa\u7535\u6d41\u6765\u8c03\u8282LED\u8f93\u51fa\u5149\u5f3a\u7684\u65b9\u6cd5\u5b58\u5728\u4e00\u4e2a\u5f88\u5927\u7684\u95ee\u9898\uff1a\u7531\u4e8eLED\u7684\u8f93\u51fa\u6ce2\u957f\u4f1a\u968f\u7740LED\u7684\u9a71\u52a8\u7535\u6d41\u6539\u53d8\u800c\u53d1\u751f\u53d8\u5316\uff0c\u8fd9\u6837\u5728\u4e0d\u540c\u7684\u8f93\u51fa\u5149\u5f3a\u4e0b\uff0c\u767d\u5149LED\u6a21\u7ec4\u7684\u8272\u6e29\u5c31\u4f1a\u53d1\u751f\u53d8\u5316\u3002<\/p>\n

\n\t\u4e3a\u4e86\u514b\u670d\u4e0a\u8ff0\u7684\u7f3a\u70b9\uff0c\u4eba\u4eec\u53c8\u5f00\u53d1\u4e86\u5bf9LED\u9a71\u52a8\u7535\u6d41\u7684PWM\u8c03\u8282\u65b9\u5f0f\u3002<\/p>\n

\n\t2 LED\u9a71\u52a8\u7535\u6d41\u7684PWM\u8c03\u8282\u65b9\u5f0f<\/p>\n

\n\tPWM\u8c03\u8282\u65b9\u5f0f\u662f\u6307\u57281\u4e2a\u5468\u671f\u5185\u4f7f\u7528\u7279\u5b9a\u5360\u7a7a\u6bd4\u7684\u8109\u51b2\u9a71\u52a8\u6ce2\u5f62\u6765\u9a71\u52a8LED\u7684\u65b9\u5f0f\u3002LED\u7684\u5e73\u5747\u9a71\u52a8\u7535\u6d41\u53d6\u51b3\u4e8e\u8109\u51b2\u6ce2\u5f62\u7684\u5360\u7a7a\u6bd4\u548cLED\u989d\u5b9a\u9a71\u52a8\u7535\u6d41\uff0c\u5728\u56fa\u5b9aLED\u989d\u5b9a\u9a71\u52a8\u7535\u6d41\u7684\u60c5\u51b5\u4e0b\u3002\u901a\u8fc7\u6539\u53d8\u5360\u7a7a\u6bd4\uff0c\u5c31\u53ef\u4ee5\u6539\u53d8LED\u7684\u5e73\u5747\u9a71\u52a8\u7535\u6d41\uff0c\u4ece\u800c\u6539\u53d8LED\u7684\u8f93\u51fa\u5149\u5f3a\u5ea6\u3002\u4e3a\u4e86\u907f\u514d\u95ea\u70c1\u6548\u679c\u3002\u901a\u5e38\u8109\u51b2\u6ce2\u5f62\u7684\u9891\u7387\u8981\u5927\u4e8e200 Hz\u3002<\/p>\n

\n\t\u51cc\u529b\u5c14\u7279<\/u>\u516c\u53f8\u7684LED\u9a71\u52a8\u82af\u7247LT3474\u662f\u4e00\u79cd\u989d\u5b9a\u8f93\u51fa\u7535\u6d41\u53ef\u8c03\u7684LED\u6052\u6d41\u9a71\u52a8\u63a7\u5236\u82af\u7247\uff0c\u6700\u5927\u9a71\u52a8\u7535\u6d41\u53ef\u4ee5\u8fbe\u52301 A\u3002\u5b83\u63d0\u4f9b\u4e862\u79cd\u9a71\u52a8\u65b9\u5f0f\uff1a\u6a21\u62df\u8c03\u8282\u65b9\u5f0f\u548cPWM\u8c03\u8282\u65b9\u5f0f\u3002\u5728PWM\u8c03\u8282\u65b9\u5f0f\u4e0b\uff0c\u5229\u7528\u6539\u53d8\u5916\u52a0\u7684PWM\u4fe1\u53f7\u7684\u5360\u7a7a\u6bd4\uff0c\u53ef\u4ee5\u5b9e\u73b0400\uff1a1\u7684\u8c03\u5149\u6bd4\u3002\u5176PWM\u8c03\u8282\u65b9\u5f0f\u7684\u5178\u578b\u5e94\u7528\u7535\u8def\u5982\u56fe2\u6240\u793a\uff0c\u5176\u4e2d\u5916\u52a0PWM\u63a7\u5236\u4fe1\u53f7\u7531PWM\u7ba1\u811a\u65bd\u52a0\u3002<\/p>\n

\n\t\"\u767d\u5149LED\u6a21\u7ec4\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\u56fe3\u6240\u793a\u4e3a\u5728PWM\u8c03\u8282\u65b9\u5f0f\u4e0b\uff0c\u5916\u52a0PWM\u8109\u51b2\u9a71\u52a8\u4fe1\u53f7\u548c\u8f93\u51fa\u9a71\u52a8\u7535\u6d41\u7684\u6d4b\u91cf\u7ed3\u679c\u3002\u4ece\u56fe3\u4e2d\u53ef\u4ee5\u6e05\u695a\u5730\u89c2\u5bdf\u5230LED\u9a71\u52a8\u7535\u6d41\u662f\u53d7\u5916\u52a0PWM\u4fe1\u53f7\u7684\u63a7\u5236\u3002\u5176\u4e2dREF\u7ba1\u811a\u7684\u8f93\u51fa\u53c2\u8003\u7535\u538b\u4e3a1.25 V\uff0c\u5982\u679c\u5c06VADJ\u4e0eREF\u7ba1\u811a\u77ed\u63a5\uff0c\u5219\u8f93\u51fa\u7684\u989d\u5b9aLED\u9a71\u52a8\u7535\u6d41\u4e3a\u6700\u5927\u8f93\u51fa\u7535\u6d41\uff081 A\uff09\u3002\u5bf9LED\u7684\u989d\u5b9a\u9a71\u52a8\u7535\u6d41JLED\u7684\u8c03\u8282\u662f\u901a\u8fc7\u6539\u53d8VADJ\u7ba1\u811a\u7684\u7535\u538b\u800c\u5b9e\u73b0\uff0c\u53ef\u4ee5\u901a\u8fc7\u5c06REF\u6240\u8f93\u51fa\u76841.25 V\u53c2\u8003\u7535\u538b\u5206\u538b\u800c\u5b8c\u6210\u3002\u8f93\u51faLED\u7684\u989d\u5b9a\u7535\u6d41\u7531\u4e0b\u5f0f\u5f97\u5230\uff1a<\/p>\n

\n\t\"\u767d\u5149LED\u6a21\u7ec4\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t\"\u767d\u5149LED\u6a21\u7ec4\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\u65b9\u6848\"<\/p>\n

\n\t3 \u8272\u6e29\u53ef\u8c03\u7684\u767d\u5149\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1<\/p>\n

\n\t\u4e3a\u4e86\u7a33\u5b9aLED\u8f93\u51fa\u5149\u7684\u5149\u5f3a\u3001\u8272\u6e29\uff0c\u5e76\u5b9e\u73b0\u5149\u5f3a\u3001\u8272\u6e29\u7684\u8c03\u8282\uff0c\u8bbe\u8ba1\u4e86\u4e00\u79cd\u767d\u5149LED\u6a21\u7ec4\u9a71\u52a8\u7535\u8def\uff0c\u5176\u6846\u56fe\u5982\u56fe4\u6240\u793a\uff0c\u5176\u4e2d\u4f7f\u7528\u4e86\u5206\u522b\u5e26\u6709\u84dd\u3001\u7eff\u3001\u7ea2\u6ee4\u5149\u7247\u7684\u5149\u5f3a\u63a2\u6d4b\u5668\u5bf9\u6784\u6210\u767d\u5149LED\u6a21\u7ec4\u76843\u79cdLED\u5149\u5f3a\u8fdb\u884c\u76d1\u63a7\uff0c\u5e76\u901a\u8fc7AVR<\/u>\u5355\u7247\u673a<\/u>\u7684\u63a7\u5236\uff0c\u6539\u53d8\u76f8\u5e94\u7684PWM\u63a7\u5236\u4fe1\u53f7\u7684\u5360\u7a7a\u6bd4\uff0c\u7a33\u5b9a\u84dd\u3001\u7eff\u3001\u7ea23\u4e2aLED\u7684\u5149\u5f3a\uff0c\u5c31\u7a33\u5b9a\u4e86\u767d\u5149LED\u6a21\u7ec4\u7684\u5149\u5f3a\u548c\u8272\u6e29\uff0c\u5176\u4e2d\u6bcf\u8defLED\u7684\u9a71\u52a8\u7535\u8def\u4e2d\u90fd\u4f7f\u7528\u4e86LT3474\u4f5c\u4e3a\u9a71\u52a8\u63a7\u5236\u82af\u7247\u3002<\/p>\n

\n\t\u5bf9\u8f93\u51fa\u767d\u5149\u7684\u8c03\u8282\uff0c\u53ef\u4ee5\u5206\u4e3a\u5149\u5f3a\u548c\u8272\u6e29\u8c03\u8282\u3002\u5982\u679c\u53ea\u662f\u6539\u53d8\u5149\u5f3a\uff0c\u5219\u7b49\u6bd4\u4f8b\u5730\u6539\u53d83\u4e2aLED\u9a71\u52a8\u7535\u8def\u4e2dPWM\u4fe1\u53f7\u7684\u5360\u7a7a\u6bd4\uff1b\u5982\u679c\u9700\u8981\u6539\u53d8\u8272\u6e29\uff0c\u5219\u901a\u8fc7\u5bf9\u84dd\u3001\u7eff\u3001\u7ea2LED\u4f7f\u7528\u4e0d\u540c\u5360\u7a7a\u6bd4\u8fdb\u884c\u63a7\u5236\uff0c\u4ece\u800c\u5b9e\u73b0\u767d\u5149\u4e2d3\u79cd\u8272\u5f69\u6210\u5206\u6bd4\u4f8b\u7684\u8c03\u8282\u800c\u8c03\u8282\u8272\u6e29\u3002\u5f53\u7136\uff0c\u4e5f\u53ef\u4ee5\u540c\u65f6\u5bf9\u8f93\u51fa\u5149\u5f3a\u548c\u8272\u6e29\u8fdb\u884c\u8c03\u8282\u3002\u901a\u8fc7\u8be5\u7535\u8def\uff0c\u5c31\u771f\u6b63\u5b9e\u73b0\u4e86\u5bf9\u767d\u5149LED\u6a21\u7ec4\u7684\u5149\u5f3a\u548c\u8272\u6e29\u7684\u5b9e\u65f6\u63a7\u5236\u3002\u800c\u4e14\u7531\u4e8e\u4f7f\u7528\u4e86\u5149\u5f3a\u63a2\u6d4b\u5668\u7684\u53cd\u9988\u63a7\u5236\uff0c\u514b\u670d\u7531\u4e8eLED\u8001\u5316\u800c\u5f15\u8d77\u7684\u5149\u5f3a\u3001\u8272\u6e29\u53d8\u5316\uff0c\u5e76\u53ef\u4ee5\u6839\u636e\u4e2a\u4eba\u559c\u597d\u8c03\u8282LED\u706f\u5177\u7684\u5149\u5f3a\u548c\u8272\u6e29\uff0c\u8fbe\u5230\u4e86\u826f\u597d\u7684\u7167\u660e\u6548\u679c\u3002<\/p>\n

\n\t4 \u7ed3 \u8bed<\/p>\n

\n\t\u672c\u6587\u8ba8\u8bba\u4e86LED\u9a71\u52a8\u76842\u79cd\u8c03\u8282\u65b9\u5f0f\uff0c\u4ecb\u7ecd\u4e86PWM\u8c03\u8282\u7684\u7535\u8def\uff0c\u5e76\u63d0\u51fa\u4e86\u4e00\u79cd\u767d\u5149LED\u6a21\u7ec4\u7684\u9a71\u52a8\u63a7\u5236\u7535\u8def\uff0c\u901a\u8fc7\u5229\u7528\u4e09\u8272\u5149\u5f3a\u63a2\u6d4b\u5668\uff0c\u5b9e\u73b0\u4e86\u5bf9\u5149\u5f3a\u548c\u8272\u6e29\u7684\u5b9e\u65f6\u8c03\u8282\u63a7\u5236\u3002\u8be5\u7535\u8def\u53ef\u5fc3\u514b\u670d\u7531\u4e8eLED\u8001\u5316\u800c\u5f15\u8d77\u7684\u5149\u5f3a\u3001\u8272\u6e29\u53d8\u5316\uff0c\u5e76\u53ef\u4ee5\u6839\u636e\u4e2a\u4eba\u559c\u597d\u8c03\u8282LED\u706f\u5177\u7684\u5149\u5f3a\u548c\u6211\u8272\u6e29\uff0c\u8fbe\u5230\u4e86\u826f\u597d\u7684\u7167\u660e\u6548\u679c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u7531\u4e8e\u5f53\u524d\u6e29\u5ba4\u6548\u5e94\u548c\u80fd\u6e90\u5371\u673a\u7684\u5f71\u54cd\uff0c\u4f7f\u5f97\u4eba\u4eec\u5bf9\u8282\u80fd\u6280\u672f\u8d8a\u6765\u8d8a\u5173\u6ce8\u3002LED\u7167\u660e\u5177\u6709\u8282\u80fd\u3001\u5bff\u547d\u957f\u7b49\u4f18\u70b9\uff0cLED\u7167\u660e\u6280\u672f\u4f5c\u4e3a\u65b0\u578b\u7eff\u8272\u7167\u660e\u6280\u672f\uff0c\u76ee\u524d\u7684\u5e94\u7528\u65e5\u8d8b\u5e7f\u6cdb\u3002LED\u7684\u767d\u5149\u7167\u660e\u901a\u5e38<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/2207"}],"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=2207"}],"version-history":[{"count":0,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/2207\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2207"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}