![\"\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684LED\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191121\/0U31I243-0.jpg\")
<\/p>\n\n\t\u5bff\u547d\u957f\u3001\u6548\u7387\u9ad8\u662f\u6709\u524d\u63d0\u7684\uff0c\u5373\u9002\u5b9c\u7684\u5de5\u4f5c\u6761\u4ef6\u3002\u5176\u4e2d\u5f71\u54cd\u5bff\u547d\u548c\u53d1\u5149\u6548\u7387\u7684\u4e3b\u8981\u56e0\u7d20\u662f LED<\/u> \u7684\u5de5\u4f5c\u7ed3\u6e29\u3002\u4ece\u4e3b\u6d41 LED \u5382\u5bb6\u63d0\u4f9b\u7684\u6d4b\u8bd5<\/u>\u6570\u636e\u8868\u660e\uff0cLED \u7684\u53d1\u5149\u6548\u7387\u4e0e\u7ed3\u6e29\u51e0\u4e4e\u6210\u53cd\u6bd4\uff0c\u5bff\u547d\u968f\u7740\u7ed3\u6e29\u5347\u9ad8\u8fd1\u4e4e\u4ee5\u6307\u6570\u89c4\u5f8b\u964d\u4f4e\u3002\u56e0\u6b64\uff0c\u5c06\u7ed3\u6e29\u63a7\u5236\u5728\u4e00\u5b9a\u8303\u56f4\u662f\u786e\u4fdd LED \u5bff\u547d\u548c\u53d1\u5149\u6548\u7387\u7684\u5173\u952e\u3002\u800c\u5c06\u7ed3\u6e29\u63a7\u5236\u5728\u4e00\u5b9a\u8303\u56f4\u7684\u624b\u6bb5\u9664\u6563\u70ed\u63aa\u65bd\u5916\uff0c\u5c06\u7ed3\u6e29\u7eb3\u5165\u9a71\u52a8\u7535\u6e90\u7684\u63a7\u5236\u53c2\u6570\u662f\u5341\u5206\u5fc5\u8981\u7684\u3002<\/p>\n
\t\u3000\u30001 LED \u7ed3\u6e29\u7684\u68c0\u6d4b<\/p>\n
\t\u3000\u3000LED \u7684\u7ed3\u6e29\u662f\u6307 PN \u7ed3\u7684\u6e29\u5ea6\uff0c\u5b9e\u9645\u6d4b\u91cf<\/u> LED \u7684\u7ed3\u6e29\u6bd4\u8f83\u56f0\u96be\uff0c\u4f46\u662f\u53ef\u4ee5\u6839\u636e LED \u7684\u6e29\u5ea6\u7279\u6027\u95f4\u63a5\u6d4b\u91cf\u3002<\/p>\n
\t\u3000\u3000LED \u7684\u4f0f\u5b89\u7279\u6027\u548c\u666e\u901a\u7684\u4e8c\u6781\u7ba1<\/u>\u76f8\u4f3c\u3002\u7528\u4e8e\u767d\u5149\u7167\u660e\u7684\u84dd\u5149 LED \u5178\u578b\u7684\u4f0f\u5b89\u7279\u6027\u5982\u56fe 1 \u6240\u793a\u3002<\/p>\n
\n\t<\/p>\n
\n\t
\n\t\u3000\u3000\u56fe 1 LED \u7684\u4f0f\u5b89\u7279\u6027<\/p>\n
\n\t
\n\t\u3000\u3000LED \u7684\u4f0f\u5b89\u7279\u6027\u548c\u5176\u5b83\u4e8c\u6781\u7ba1\u4e00\u6837\u5177\u6709\u8d1f\u6e29\u5ea6\u7cfb\u6570\u7684\u7279\u70b9\uff0c\u5373\u5728\u7ed3\u6e29\u5347\u9ad8\u65f6 I\/V \u66f2\u7ebf\u51fa\u73b0\u5de6\u79fb\u73b0\u8c61\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n
\n\t![\"\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684LED\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191121\/0U31I428-1.jpg\")
<\/p>\n
\n\t
\n\t\u3000\u3000\u56fe 2 \u4f0f\u5b89\u7279\u6027\u7684\u6e29\u5ea6\u7279\u6027<\/p>\n
\n\t
\n\t\u3000\u3000\u4e00\u822c LED \u7684\u7ed3\u6e29\u6bcf\u5347\u9ad8 1°C ,I\/V \u66f2\u7ebf\u4f1a\u5411\u5de6\u5e73\u79fb 1.5~4mV,\u5047\u5982\u6240\u52a0\u7684\u7535\u538b\u4e3a\u6052\u5b9a\uff0c\u90a3\u4e48\u663e\u7136\u7535\u6d41<\/u>\u4f1a\u589e\u52a0\uff0c\u7535\u6d41\u589e\u52a0\u53ea\u4f1a\u4f7f\u5b83\u7684\u7ed3\u6e29\u5347\u5f97\u66f4\u9ad8\uff0c\u751a\u81f3\u5bfc\u81f4\u6076\u6027\u5faa\u73af\u3002\u6240\u4ee5\uff0c\u76ee\u524d LED \u9a71\u52a8\u7535\u6e90\u4e00\u822c\u8bbe\u8ba1\u4e3a\u6052\u6d41\u4f9b\u7535\u3002<\/p>\n
\t\u3000\u3000\u6839\u636e I\/V \u66f2\u7ebf\u968f\u7ed3\u6e29\u5347\u9ad8\u5de6\u79fb\u7684\u89c4\u5f8b\uff0c\u5728\u6052\u6d41\u4f9b\u7535\u7684\u60c5\u51b5\u4e0b\uff0c\u6d4b\u91cf LED \u7684\u6b63\u5411\u7535\u538b\u5c31\u53ef\u4ee5\u63a8\u7b97 LED \u7ed3\u6e29\u3002<\/p>\n
\t\u3000\u3000\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5f80\u5f80\u4e0d\u9700\u8981\u786e\u5b9a LED \u7ed3\u6e29\u7684\u7279\u522b\u7cbe\u786e\u7684\u6570\u503c\uff0c\u6b64\u65f6\u53ef\u4ee5\u7528\u8bd5\u9a8c\u7684\u65b9\u6cd5\u786e\u5b9a\u6574\u4f53\u706f\u5177 LED \u5149\u6e90\u7ed3\u6e29\u7684\u4f30\u7b97\u6570\u503c\u3002\u4ee5\u4e00\u4e2a 12W \u7b52\u706f\u4e3a\u4f8b\uff0c\u5149\u6e90\u90e8\u5206\u7531 4 \u5e76 6 \u4e32\u4e2d\u529f\u7387 LED \u7ec4\u6210\uff0c\u5176\u7535\u8def<\/u>\u8fde\u63a5\u5f62\u5f0f\u5982\u4e0b\uff1a<\/p>\n
\n\t![\"\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684LED\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191121\/0U31J641-2.jpg\")
<\/p>\n
\n\t
\n\t\u3000\u3000\u56fe 3 LED \u5149\u6e90\u7535\u8def\u8fde\u63a5\u56fe<\/p>\n
\n\t
\n\t\u3000\u3000\u786e\u5b9a\u6b63\u5411\u7535\u538b\u4e0e\u7ed3\u6e29\u7684\u5173\u7cfb\u7684\u8bd5\u9a8c\u6b65\u9aa4\u4e3a\uff1a1)\u5c06\u5149\u6e90\u7f6e\u5165\u6052\u6e29\u7bb1\u4e2d;2)\u8bbe\u7f6e\u6052\u6e29\u7bb1\u7684\u6e29\u5ea6;3)\u5f85\u6052\u6e29\u7bb1\u5185\u6e29\u5ea6\u5145\u5206\u5e73\u8861\u7a33\u5b9a\u540e\uff0c\u5728\u5149\u6e90\u4e24\u7aef\u63a5\u5165\u6052\u6d41\u6e90;4)\u8fc5\u901f\u6d4b\u91cf\u5149\u6e90\u7684\u6b63\u5411\u7535\u538b\u5e76\u8bb0\u5f55;5)\u91cd\u590d\u4e0a\u8ff0\u6b65\u9aa4 1)~(4)\uff0c\u6052\u6e29\u7bb1\u6e29\u5ea6\u7531\u4f4e\u5230\u9ad8\uff0c\u6d4b\u5f97\u591a\u70b9\u6570\u636e\u3002<\/p>\n
\t\u3000\u3000\u6309\u4e0a\u8ff0\u6b65\u9aa4\uff0c\u5bf9 12W \u7b52\u706f\u5149\u6e90\u8fdb\u884c\u4e09\u6b21\u6d4b\u91cf\uff0c\u6570\u636e\u5982\u4e0b\uff1a<\/p>\n
\n\t![\"\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684LED\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191121\/0U31G644-3.jpg\")
<\/p>\n
\n\t
\n\t\u3000\u3000\u8868 1 LED \u6b63\u5411\u538b\u964d\u4e0e\u7ed3\u6e29\u7684\u6d4b\u91cf\u6570\u636e<\/p>\n
\n\t
\n\t\u3000\u3000\u7531\u8868 1 \u53ef\u4ee5\u770b\u51fa\uff0c\u6d4b\u91cf\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u89c4\u5f8b\u6027\u5f88\u660e\u663e\u3002<\/p>\n
\t\u3000\u3000\u56e0\u6d4b\u8bd5\u65f6\u95f4\u8f83\u77ed\uff0c\u53ef\u4ee5\u5c06\u6d4b\u91cf\u65f6\u6052\u6e29\u7bb1\u8bbe\u7f6e\u6e29\u5ea6\u8fd1\u4f3c\u7b49\u4e8e LED \u5149\u6e90\u7684\u7ed3\u6e29\u3002\u5728 600mA \u6052\u6d41\u7684\u60c5\u51b5\u4e0b\uff0c\u901a\u8fc7\u6570\u5b66\u65b9\u6cd5\u4e0d\u96be\u5f97\u51fa\u5149\u6e90\u6a21\u5757\u6b63\u5411\u7535\u538b\u4e0e\u7ed3\u6e29\u7684\u5173\u7cfb\u3002\u5229\u7528 Excel \u5de5\u5177\uff0c\u4ee5\u6e29\u5ea6\u4e3a X \u8f74\uff0c\u5e73\u5747\u503c\u4e3a Y \u8f74\uff0c\u751f\u6210(X,Y)\u6563\u70b9\u56fe\uff0c\u9009\u62e9\u7ebf\u6027\u56de\u5f52\u5206\u6790\u7c7b\u578b\u5219\u53ef\u751f\u6210\u5982\u4e0b\u8d8b\u52bf\u56fe\u548c\u516c\u5f0f\u3002<\/p>\n
\n\t![\"\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684LED\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191121\/0U31H2U-4.jpg\")
<\/p>\n
\n\t
\n\t\u3000\u3000\u56fe 4 Excel \u751f\u6210\u7684\u8d8b\u52bf\u56fe<\/p>\n
\n\t
\n\t\u3000\u3000\u7531\u6b64\u53ef\u89c1\uff0c\u4e00\u4e2a\u7531 4 \u5e76 6 \u4e32\u4e2d\u529f\u7387 LED \u7ec4\u6210\u7684\u5149\u6e90\uff0c\u5728 600mA \u6052\u6d41\u9a71\u52a8\u65f6\u5176\u6b63\u5411\u7535\u538b\u4e0e\u7ed3\u6e29\u7684\u5173\u7cfb\u4e3a\uff1a<\/p>\n
\t\u3000\u3000Vf = -0.0207Tj+ 20.332 (1)<\/p>\n
\t\u3000\u3000Tj= 982.22-48.31Vf (2)<\/p>\n
\t\u3000\u3000\u5f0f\u4e2d Vf \u4e3a LED \u5149\u6e90\u7684\u6b63\u5411\u538b\u964d\uff0cTj \u4e3a\u7ed3\u6e29\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e0d\u540c\u5382\u5bb6\u4e0d\u540c\u89c4\u683c\u7684 LED \u4ea7\u54c1\u867d\u7136\u90fd\u7b26\u5408\u4e0a\u8ff0\u8d8b\u52bf\uff0c\u4f46\u5177\u4f53\u6570\u636e\u5374\u6709\u4e00\u5b9a\u7684\u5dee\u5f02\uff0c\u56e0\u6b64\u66f4\u6362\u5382\u5bb6\u540e\u89c4\u683c\u578b\u53f7\u9700\u91cd\u65b0\u8bd5\u9a8c\u3002<\/p>\n
\t\u3000\u30002 LM3404 \u4ecb\u7ecd<\/p>\n
\t\u3000\u3000\u968f\u7740 LED \u7167\u660e\u5e94\u7528\u7684\u53d1\u5c55\uff0c\u56fd\u5185\u5916\u5382\u5bb6\u63a8\u51fa\u4e86\u5f88\u591a\u7528\u4e8e\u9a71\u52a8 LED \u7684\u5668\u4ef6\u3002\u5176\u4e2d\u7f8e\u56fd\u56fd\u5bb6\u534a\u5bfc\u4f53\u516c\u53f8\u63a8\u51fa\u7684 LM3404 \u53ca\u7cfb\u5217\u4ea7\u54c1\u5c31\u662f\u4e00\u6b3e\u975e\u5e38\u9002\u7528\u4e8e\u4e2d\u5c0f\u529f\u7387 LED \u5149\u6e90\u7684\u6052\u6d41\u9a71\u52a8\u82af\u7247\u3002<\/p>\n
\t\u3000\u3000LM3404 \u5185\u7f6e MOS \u5f00\u5173<\/u>\u7ba1\uff0c\u6700\u5927\u8f93\u51fa\u7535\u6d41 1A,\u6548\u7387\u9ad8\u8fbe 95%. \u8fd9\u6b3e\u82af\u7247\u91c7\u7528 8 \u5f15\u811a SOIC \u5c01\u88c5\uff0c\u5176\u4e2d\u7684\u4e00\u6761\u5f15\u811a\u53ef\u4ee5\u5229\u7528\u8109\u5bbd\u8c03\u5236(PWM)\u8f93\u5165\u4fe1\u53f7\u63a7\u5236 LED \u7684\u5149\u4eae\u5ea6\u3002<\/p>\n
\t\u3000\u3000\u6b64\u5916\uff0c\u8fd9\u6b3e\u82af\u7247\u53ef\u4ee5\u5229\u7528\u4f4e\u81f3 0.2V \u7684\u53cd\u9988\u7535\u538b\u63d0\u4f9b\u7535\u6d41\u68c0\u6d4b\u529f\u80fd\u3002\u8f93\u5165\u7535\u538b 6~42V,\u5176\u5185\u90e8\u7535\u8def\u7ed3\u6784\u5982\u56fe 5 \u6240\u793a\u3002<\/p>\n
\n\t![\"\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684LED\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191121\/0U31J2L-5.jpg\")
<\/p>\n
\n\t
\n\t\u3000\u3000\u56fe 5 LM3404 \u5185\u90e8\u7535\u8def\u7ed3\u6784\u56fe<\/p>\n
\n\t\u5f15\u811a\u5b9a\u4e49\uff1a<\/p>\n
\t\u3000\u3000SW:\u5185\u90e8 MOS \u7ba1\u8f93\u51fa\u7aef\uff0c\u4e00\u822c\u9700\u5916\u63a5\u4e00\u4e2a\u7535\u611f<\/u>\u548c\u4e00\u4e2a\u8096\u7279\u57fa\u4e8c\u6781\u7ba1;<\/p>\n
\t\u3000\u3000BOOT:\u5185\u90e8 MOS \u7ba1\u542f\u52a8\u5f15\u811a\uff0c\u4e00\u822c\u7528\u4e00\u4e2a 10nF \u7535\u5bb9<\/u>\u4e0e SW \u7aef\u76f8\u8fde;<\/p>\n
\t\u3000\u3000DIM:PWM \u8c03\u5149\u8f93\u5165\u7aef\uff0c\u901a\u8fc7\u8f93\u5165\u4e0d\u540c\u5360\u7a7a\u6bd4\u7684 PWM \u4fe1\u53f7\uff0c\u53ef\u8c03\u6574\u8f93\u51fa\u7684\u5e73\u5747\u529f\u7387;<\/p>\n
\t\u3000\u3000GND:\u63a5\u5730\u7aef;<\/p>\n
\t\u3000\u3000CS:\u53cd\u9988\u5f15\u811a\uff0c\u7528\u4e8e\u8bbe\u7f6e\u6052\u6d41\u503c;<\/p>\n
\t\u3000\u3000RON:\u5728\u7ebf\u63a7\u5236\u7aef\uff0c\u8be5\u5f15\u811a\u63a5\u5730\u53ef\u4f7f\u82af\u7247\u505c\u6b62\u5de5\u4f5c\u5e76\u5904\u4e8e\u4f4e\u529f\u8017\u72b6\u6001;<\/p>\n
\t\u3000\u3000VCC:\u4f9b\u7535\u5f15\u811a\uff0c\u8be5\u7aef\u7531\u82af\u7247\u5185\u90e8\u63d0\u4f9b\u4e00\u4e2a 7V \u7535\u538b\uff0c\u5e94\u7528\u65f6\u63a5\u4e00\u4e2a\u6ee4\u6ce2\u7535\u5bb9\u5230\u5730;<\/p>\n
\t\u3000\u3000VIN:\u8f93\u5165\u7aef\uff0c\u7535\u538b\u8303\u56f4 6~42V,\u5bf9\u4e8e LM3404H \u8303\u56f4\u4e3a 6~75V.<\/p>\n
\t\u3000\u3000LM3404 \u5e94\u7528\u5341\u5206\u7b80\u5355\uff0c\u4e00\u4e2a\u7528 LM3404 \u7684\u5178\u578b\u5e94\u7528\u5982\u56fe 6 \u6240\u793a\u3002<\/p>\n
\n\t![\"\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684LED\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191121\/0U31IE4-6.jpg\")
<\/p>\n
\n\t
\n\t\u3000\u3000\u56fe 6 LM3404 \u5178\u578b\u5e94\u7528\u7535\u8def\u56fe<\/p>\n
\n\t\u56fe\u4e2d\uff0cRs<\/u>ns \u4e3a\u53d6\u6837\u7535\u963b<\/u>\uff0c\u53ef\u6839\u636e\u8bbe\u8ba1\u6052\u6d41\u503c\u786e\u5b9a;Ron \u4e00\u822c\u9009\u7528 100k \u5de6\u53f3\u7684\u7535\u963b;\u53ef\u51b3\u5b9a\u5f00\u5173\u9891\u7387;L1 \u4e3a\u8f93\u51fa\u7535\u611f\uff0c\u53ef\u6839\u636e\u8bbe\u8ba1\u7eb9\u6ce2\u53ca\u5f00\u5173\u9891\u7387\u7b49\u53c2\u6570\u786e\u5b9a\u3002<\/p>\n
\t\u3000\u30003 \u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684 LED \u7535\u6e90\u8bbe\u8ba1<\/p>\n
\t\u3000\u3000\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684 LED \u9a71\u52a8\u7535\u8def\u5173\u952e\u5728\u4e8e\u7ed3\u6e29\u68c0\u6d4b\u548c\u5982\u4f55\u4fdd\u62a4\u3002\u6839\u636e\u4e0a\u8ff0\u7ed3\u6e29\u4e0e LED \u6b63\u5411\u7535\u538b\u7684\u5173\u7cfb\uff0c\u6d4b\u91cf LED \u5149\u6e90\u7684\u6b63\u5411\u7535\u538b\u5373\u53ef\u786e\u5b9a\u7ed3\u6e29\uff0c\u4f46\u4e00\u822c LED \u6052\u6d41\u9a71\u52a8\u7535\u8def\u7684\u7eb9\u6ce2\u8f83\u5927\uff0c\u4e3a\u907f\u514d\u8bef\u4fdd\u62a4\uff0c\u68c0\u6d4b\u7535\u8def\u5fc5\u987b\u8981\u5bf9\u6d4b\u91cf\u503c\u8fdb\u884c\u6ee4\u6ce2\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u5f53\u7ed3\u6e29\u8d85\u8fc7\u8bbe\u5b9a\u503c\u65f6\u7684\u4fdd\u62a4\u63aa\u65bd\uff0c\u5982\u80fd\u4f7f\u5149\u6e90\u964d\u4f4e\u529f\u7387\u5de5\u4f5c\uff0c\u6574\u4e2a\u706f\u5177\u964d\u7ea7\u8fd0\u884c\uff0c\u662f\u8f83\u4e3a\u5408\u7406\u7684\u65b9\u6848\u3002\u91c7\u7528\u5e26\u6a21\u62df\u8f93\u5165\u7684\u4f4e\u529f\u8017\u7684\u5355\u7247\u673a<\/u>\uff0c\u53ef\u4ee5\u5bf9\u68c0\u6d4b\u6570\u636e\u8fdb\u884c\u6570\u5b57\u6ee4\u6ce2\uff0c\u5e76\u901a\u8fc7 PWM \u8f93\u51fa\u63a7\u5236\u9a71\u52a8\u8c03\u8282 LED \u5149\u6e90\u529f\u7387\uff0c\u53ef\u7b80\u5316\u68c0\u6d4b\u7535\u8def\u548c\u63a7\u5236\u7535\u8def\u7684\u8bbe\u8ba1\u3002<\/p>\n
\t\u3000\u3000Microchip<\/u> \u516c\u53f8 PI<\/u>C12F675 \u5177\u6709\u53ef\u7f16\u7a0b\u7684 4 \u901a\u9053\u6a21\u62df\u91cf\u8f93\u5165\u300110 \u4f4d\u5206\u8fa8\u7387\u6a21\u6570\u8f6c\u6362\u7684\u4f4e\u529f\u8017\u5728\u7ebf\u53ef\u7f16\u7a0b\u7684\u5355\u7247\u673a\uff0c\u5176\u5185\u7f6e\u770b\u95e8\u72d7<\/u>\u30014MHz \u632f\u8361\u5668<\/u>\u3001128 \u5b57\u8282 EEPROM<\/u>,\u5355\u5b57\u8282\u6307\u4ee4\u7cfb\u7edf\uff0c8 \u811a\u5c01\u88c5\u3002\u662f\u4e00\u6b3e\u7b80\u5355\u5b9e\u7528\u7684\u3001\u6027\u4ef7\u6bd4\u8f83\u9ad8\u7684\u5355\u7247\u673a\u3002\u5c06 LED \u5149\u6e90\u7684\u6b63\u5411\u7535\u538b\u7ecf\u53d6\u6837\u540e\u63a5\u5165 PIC12F675 \u7684\u6a21\u62df\u8f93\u5165\u7aef\uff0c\u7ecf AD \u8f6c\u6362\u3001\u53bb\u9664\u7c97\u5927\u8bef\u5dee\u3001\u53d6\u591a\u4e2a\u6570\u636e\u7684\u5747\u503c\u4f5c\u4e3a\u7ed3\u6e29\u5224\u65ad\u4f9d\u636e\uff0c\u8f93\u51fa PWM \u4fe1\u53f7\u5bf9\u6052\u6d41\u9a71\u52a8\u82af\u7247\u8fdb\u884c\u63a7\u5236\uff0c\u4ee5\u8fbe\u5230\u8c03\u8282\u8f93\u51fa\u529f\u7387\u7684\u6548\u679c\u3002<\/p>\n
\t\u3000\u3000\u6b64\u5916\uff0c\u6839\u636e\u6d4b\u91cf\u503c\u8fd8\u53ef\u4ee5\u8fdb\u884c\u5f00\u8def<\/u>\u5224\u65ad\uff0c\u4ece\u800c\u4e5f\u7b80\u5316\u4e86\u5f00\u8def\u4fdd\u62a4\u7535\u8def<\/u>\u3002<\/p>\n
\t\u3000\u3000\u4ecd\u4ee5\u5149\u6e90\u90e8\u5206\u7531 4 \u5e76 6 \u4e32\u4e2d\u529f\u7387 LED \u82af\u7247\u7ec4\u6210\u7684\u7b52\u706f\u4e3a\u4f8b\uff0c\u8bbe\u8ba1\u6052\u6d41\u503c\u4e3a 600mA,\u7ed3\u6e29\u4fdd\u62a4\u70b9\u4e3a 80\u2103\u5de6\u53f3\uff0c\u6839\u636e\u5f0f(1)\u5f97\u51fa\u5176\u5149\u6e90\u7535\u538b\u4fdd\u62a4\u70b9\u4e3a 18.68V,\u5373\u5149\u6e90\u4e24\u7aef\u7684\u7535\u538b\u4f4e\u4e8e 18.68V \u65f6\uff0cLED \u7ed3\u6e29\u4f1a\u8d85\u8fc7 80\u2103\uff0c\u6b64\u65f6\u9a71\u52a8\u5e94\u91c7\u53d6\u4fdd\u62a4\u63aa\u65bd\u3002\u7531 LM3404 \u548c PIC12F675 \u7ec4\u6210\u7684\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684 LED \u7535\u6e90\u7535\u8def\u539f\u7406\u56fe\u5982\u56fe 7 \u6240\u793a\u3002<\/p>\n
\n\t\u56fe 7 \u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684 LED \u7535\u6e90\u7535\u539f\u7406\u56fe<\/p>\n
\n\t![\"\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684LED\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191121\/0U31H211-7.jpg\")
<\/p>\n
\n\t\u539f\u7406\u56fe\u4e2d\uff0cCX1\u3001L1\u3001L2 \u7ec4\u6210\u8f93\u5165 EMC<\/u> \u6ee4\u6ce2\u7535\u8def\uff0c\u7ecf AC\/DC<\/u> \u8f6c\u6362\u8f93\u51fa 24V \u76f4\u6d41\uff0c\u5982\u4e3a\u7535\u6c60<\/u>\u4f9b\u7535\u7684\u5e94\u6025\u7167\u660e\u3001\u592a\u9633\u80fd\u7167\u660e\u3001\u53ca\u8f66\u8f7d\u7167\u660e\u7b49\u5e94\u7528\u65f6\uff0c\u5219\u8be5\u90e8\u5206\u7701\u7565\u3002R1\u3001LM3404\u3001C4\u3001D1\u3001L3\u3001R7 \u7ec4\u6210\u5178\u578b\u7684\u6052\u6d41\u9a71\u52a8\u7535\u8def\uff0c\u5bf9\u4e8e 4 \u5e76 6 \u4e32\u7684 LED \u4e2d\u529f\u7387\u82af\u7247\u7ec4\u6210\u7684\u5149\u6e90\u6a21\u5757\uff0c\u53d6\u6837\u7535\u963b\u4e3a 0.39Ω\u3002R2\u3001R3\u3001R4 \u4e0e LM431 \u7ec4\u6210\u7a33\u538b\u7535\u8def\uff0c\u4e3a PIC12F675 \u63d0\u4f9b\u7a33\u5b9a\u7684 5V \u7535\u6e90\u548c\u5185\u90e8 AD \u8f6c\u6362\u7684\u7535\u538b\u57fa\u51c6\u3002<\/p>\n
\t\u3000\u3000LM3404 \u7684\u8f93\u51fa\u7ecf R5\u3001R6 \u5206\u538b\u540e\u8f93\u5165 PIC12F675 \u7684\u6a21\u62df\u7aef\u53e3 AN2,PIC12F675 \u7ecf\u5185\u90e8 AD \u8f6c\u6362\u3001\u8ba1\u7b97\u83b7\u53d6 LED \u5149\u6e90\u7684\u6b63\u5411\u7535\u538b\uff0c\u6839\u636e\u8bbe\u5b9a\u503c\u7a0b\u5e8f\u4ea7\u751f PWM \u4fe1\u53f7\uff0c\u901a\u8fc7 GP4 \u5f15\u811a\u63a5\u5165 LM3404 \u7684 DIM \u7aef\u5bf9\u5176\u8f93\u51fa\u529f\u7387\u8fdb\u884c\u8c03\u6574\u3002<\/p>\n
\t\u3000\u3000PIC12F675 \u521d\u59cb\u8bbe\u7f6e GP4 \u8f93\u51fa\u9ad8\u7535\u5e73\uff0c\u5982\u6d4b\u5f97 LED \u6b63\u5411\u7535\u538b\u5728\u5408\u7406\u8303\u56f4\u5185\uff0c\u5219\u7ef4\u6301\u9ad8\u7535\u5e73\u8f93\u51fa\u4f7f LM3404 \u6b63\u5e38\u5de5\u4f5c;\u5982 LED \u6b63\u5411\u7535\u538b\u9010\u6e10\u53d8\u4f4e\u5e76\u4f4e\u4e8e\u8bbe\u5b9a\u503c 18.68V,\u5219\u5728 GP4 \u5f15\u811a\u8f93\u51fa PWM \u4fe1\u53f7\uff0c\u5176\u5360\u7a7a\u6bd4\u53ef\u4f9d\u6b21\u964d\u4f4e\uff0c\u76f4\u81f3 LED \u6b63\u5411\u7535\u538b\u4f4e\u4e8e\u8bbe\u5b9a\u503c\u3002\u5f53\u6d4b\u5f97 LED \u6b63\u5411\u7535\u538b\u5f88\u9ad8\u65f6\u53ef\u5224\u5b9a\u8f93\u51fa\u5f00\u8def\uff0c PIC12F675 \u53ef\u8f93\u51fa\u4f4e\u7535\u5e73\u5173\u95ed LM3404 \u7684\u8f93\u51fa\u3002<\/p>\n
\t\u3000\u3000\u9700\u8981\u6307\u51fa\u7684\u662f\uff0c\u8f93\u51fa\u7535\u538b\u53d6\u6837\u5305\u542b\u4e86\u7528\u4e8e LM3404 \u6052\u6d41\u63a7\u5236\u7684\u7535\u6d41\u53d6\u6837\u7535\u538b\u7ea6 0.23V,\u5728 PIC12F675 \u7684\u8ba1\u7b97\u7a0b\u5e8f\u4e2d\u5e94\u4e88\u4ee5\u8c03\u6574\u3002<\/p>\n
\t\u3000\u3000PIC12F675 \u7684\u7a0b\u5e8f\u6846\u56fe\u89c1\u56fe<\/p>\n
\n\t![\"\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684LED\u9a71\u52a8\u7535\u8def\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191121\/0U31MS4-8.jpg\")
<\/p>\n
\n\t
\n\t\u3000\u3000\u56fe 8 \u5355\u7247\u673a\u7a0b\u5e8f\u6846\u56fe<\/p>\n
\n\t4 \u7ed3\u8bed<\/p>\n
\t\u3000\u3000\u57fa\u4e8e\u7ed3\u6e29\u4fdd\u62a4\u7684 LED \u7535\u6e90\u7531\u4e8e\u5229\u7528\u5355\u7247\u673a\u8fdb\u884c\u63a7\u5236\uff0c\u5f88\u5bb9\u6613\u6269\u5c55\u5176\u5b83\u529f\u80fd\u3002\u5982\u4f5c\u4e3a\u8def\u706f\uff0c\u53ef\u901a\u8fc7\u7f16\u7a0b\u4f7f\u540e\u534a\u591c\u964d\u4f4e\u529f\u7387\u8fd0\u884c\uff0c\u4ece\u800c\u8fdb\u4e00\u6b65\u8282\u80fd\u548c\u5ef6\u957f\u706f\u5177\u5bff\u547d;\u52a0\u5165\u5176\u5b83\u4f20\u611f\u5668<\/u>\uff0c\u53ef\u5b9e\u73b0\u6309\u9700\u7167\u660e;\u52a0\u5165\u8fdc\u7a0b\u901a\u8baf\u6a21\u5757\uff0c\u53ef\u4ee5\u4f7f\u706f\u5177\u7ec4\u6210\u667a\u80fd\u63a7\u5236\u7f51\u7edc\u7b49\u7b49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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