{"id":6357,"date":"2014-09-17T02:20:10","date_gmt":"2014-09-16T18:20:10","guid":{"rendered":"http:\/\/www.xyzlux.com\/?p=6357"},"modified":"2014-09-17T20:37:56","modified_gmt":"2014-09-17T12:37:56","slug":"%e4%b8%80%e7%bd%91%e6%89%93%e5%b0%bd%e4%b9%8b-%e8%b0%83%e5%85%89%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.xyzlux.com\/?p=6357","title":{"rendered":"\u53ef\u63a7\u7845\u8c03\u5149\u5668\u7684\u5de5\u4f5c\u539f\u7406\u53ca\u5e94\u7528"},"content":{"rendered":"<p><a href=\"https:\/\/www.xyzlux.com\/wp-content\/uploads\/2013\/12\/dimmer.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10332\" src=\"https:\/\/www.xyzlux.com\/wp-content\/uploads\/2013\/12\/dimmer.png\" alt=\"dimmer\" width=\"700\" height=\"284\" srcset=\"https:\/\/www.xyzlux.com\/wp-content\/uploads\/2013\/12\/dimmer.png 700w, https:\/\/www.xyzlux.com\/wp-content\/uploads\/2013\/12\/dimmer-300x121.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" 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PWM\u8c03\u5149\u5668<\/p>\n<p>PWM\u8c03\u5149\u5668\u6700\u65e9\u7528\u4e8e\u76f4\u6d41\u7535\u6e90\u4e2d\u5bf9\u94a8\u4e1d\u706f\u6ce1\u7b49\u7ebf\u6027\u8d1f\u8f7d\u8c03\u5149\uff0c\u5b83\u5229\u7528\u4e00\u4e2aPWM\u4fe1\u53f7\u53bb\u63a7\u5236\u5f00\u5173\u5668\u4ef6\u7684\u5bfc\u901a\u548c\u622a\u6b62\uff0c\u901a\u8fc7\u6539\u53d8\u5360\u7a7a\u6bd4\u6765\u8c03\u8282\u6d41\u8fc7\u706f\u6ce1\u7684\u7535\u6d41\uff0c\u4ece\u800c\u5b9e\u73b0\u8c03\u5149\u63a7\u5236\u3002<\/p>\n<p>1.4 \u6b63\u5f26\u6ce2\u8c03\u5149\u5668<\/p>\n<p>\u6b63\u5f26\u6ce2\u8c03\u5149\u5668\u7684\u539f\u7406\u4e0ePWM\u8c03\u5149\u65b9\u5f0f\u6709\u4e9b\u7c7b\u4f3c\uff0c\u5b89\u88c5\u5728\u4ea4\u6d41\u7ebf\u8def\u4e2d\u7684\u529f\u7387\u5f00\u5173\u53d7\u9ad8\u9891\u4fe1\u53f7\u9a71\u52a8\uff0c\u529f\u7387\u5f00\u5173\u5728\u6b63\u5f26\u6ce2\u7684\u6bcf\u4e2a\u534a\u6ce2\u4e2d\u90fd\u5bfc\u901a\u591a\u6b21\uff0c\u4e14\u5bfc\u901a\u65f6\u95f4\u662f\u53ef\u53d8\u7684\u3002\u8d1f\u8f7d\u4e24\u7aef\u7684\u5de5\u9891\u7535\u538b\u88ab\u9ad8\u9891\u4fe1\u53f7\u5207\u5272\uff0c\u6539\u53d8\u9ad8\u9891\u4fe1\u53f7\u7684\u9891\u7387\u5c31\u53ef\u4ee5\u8c03\u8282\u6d41\u8fc7\u8d1f\u8f7d\u7684\u7535\u6d41\uff0c\u4ece\u800c\u5b9e\u73b0\u8c03\u5149\u63a7\u5236\u3002\u6b63\u5f26\u6ce2\u8c03\u5149\u5668\u4e00\u822c\u4f7f\u7528IGBT\uff08\u7edd\u7f18\u6805\u53cc\u6781\u6676\u4f53\u7ba1\uff09\u4f5c\u4e3a\u5f00\u5173\u5668\u4ef6\uff0c\u6240\u4ee5\u53c8\u79f0\u4e3aIGBT\u8c03\u5149\u5668\u3002<\/p>\n<p>\u6b63\u5f26\u6ce2\u8c03\u5149\u5668\u6ca1\u6709\u6539\u53d8\u6b63\u5f26\u6ce2\u7684\u6ce2\u5f62\u7279\u5f81\uff0c\u5bf9\u8d1f\u8f7d\u7684\u5de5\u4f5c\u72b6\u6001\u5f71\u54cd\u8f83\u5c0f\uff0c\u6240\u4ea7\u751f\u7684\u8c10\u6ce2\u5e72\u6270\u4e5f\u4e0d\u5927\uff0c\u8fd9\u4f7f\u5b83\u80fd\u5f88\u597d\u7684\u4e0e\u975e\u7ebf\u6027\u8d1f\u8f7d\u914d\u5408\u4f7f\u7528\u3002\u5e76\u4e14\u53ef\u4ee5\u51cf\u5c11\u7ebf\u8def\u635f\u8017\u53ca\u63d0\u9ad8\u6548\u7387\uff0c\u964d\u4f4e\u5f00\u5173\u5668\u4ef6\u7684\u53d1\u70ed\u91cf\uff0c\u5927\u5927\u63d0\u5347\u7535\u8def\u7684\u9002\u7528\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<p>\u6b63\u5f26\u6ce2\u8c03\u5149\u5668\u907f\u514d\u4e86\u53ef\u63a7\u7845\u8c03\u5149\u5668\u7684\u201c\u65a9\u6ce2\u201d\u7f3a\u9677\uff0c\u5b83\u6ca1\u6709\u6700\u4f4e\u8d1f\u8f7d\u529f\u7387\u7684\u9650\u5236\uff0c\u80fd\u9002\u5e94\u767d\u70bd\u706f\u3001\u8282\u80fd\u706f\u3001\u65e5\u5149\u706f\u9547\u6d41\u5668\u53ca\u98ce\u6247\u9a6c\u8fbe\u7b49\u5404\u79cd\u7c7b\u578b\u7684\u8d1f\u8f7d\uff0c\u662f\u4e00\u79cd\u6bd4\u8f83\u7406\u60f3\u7684\u8c03\u5149\u5668\u4ea7\u54c1\u3002\u4f46\u7531\u4e8eIGBT\u9700\u8981\u7279\u522b\u7684\u9a71\u52a8\u548c\u4fdd\u62a4\u6280\u672f\uff0c\u5bfc\u81f4\u7535\u8def\u590d\u6742\uff0c\u6210\u672c\u8f83\u9ad8\uff0c\u76ee\u524d\u53ea\u5728\u821e\u53f0\u8c03\u5149\u7b49\u7279\u6b8a\u573a\u5408\u5e94\u7528\uff0c\u4f46\u5b83\u4ecd\u662f\u4eca\u540e\u53d1\u5c55\u7684\u4e3b\u8981\u65b9\u5411\u3002<\/p>\n<p><strong>2. \u53cc\u5411\u53ef\u63a7\u7845\u8c03\u5149\u7535\u8def\u5206\u6790<\/strong><\/p>\n<p>\u76ee\u524d\u666e\u904d\u4f7f\u7528\u7684\u767d\u70bd\u706f\u8c03\u5149\u5668\u4e2d\uff0c\u53cc\u5411\u53ef\u63a7\u7845\u7684\u5e94\u7528\u6700\u4e3a\u5e7f\u6cdb\u3002\u8fd9\u79cd\u8c03\u5149\u5668\u5728\u4ea4\u6d41\u7535\u7684\u6bcf\u4e2a\u534a\u6ce2\u671f\u95f4\u5bfc\u901a\u548c\u5173\u65ad\u4e00\u6b21\uff0c\u5728\u9700\u8981\u964d\u4f4e\u767d\u70bd\u706f\u4eae\u5ea6\u65f6\uff0c\u53ef\u63a7\u7845\u4f1a\u5173\u65ad\u4e00\u90e8\u5206\u4ea4\u6d41\u7535\u6765\u51cf\u5c0f\u7535\u6d41\uff0c\u5b9e\u73b0\u8c03\u5149\u76ee\u7684\u3002<\/p>\n<p><a href=\"https:\/\/www.xyzlux.com\/wp-content\/uploads\/2013\/12\/dimmer-3.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10333\" src=\"https:\/\/www.xyzlux.com\/wp-content\/uploads\/2013\/12\/dimmer-3.png\" alt=\"dimmer-3\" width=\"700\" height=\"161\" srcset=\"https:\/\/www.xyzlux.com\/wp-content\/uploads\/2013\/12\/dimmer-3.png 700w, https:\/\/www.xyzlux.com\/wp-content\/uploads\/2013\/12\/dimmer-3-300x69.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/p>\n<p>\u4e0a\u56fe\u662f\u4e00\u4e2a\u5178\u578b\u7684\u53cc\u5411\u53ef\u63a7\u7845\u8c03\u5149\u5668\u7535\u8def\uff0c\u7535\u4f4d\u5668POT1\u548c\u7535\u963bR1\u3001R2 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<\/strong>\u89e6\u53d1\u8109\u51b2\u5e94\u8be5\u6709\u8db3\u591f\u7684\u5e45\u5ea6\u548c\u5bbd\u5ea6\u624d\u80fd\u4f7f\u53ef\u63a7\u7845\u5b8c\u5168\u5bfc\u901a\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u53ef\u63a7\u7845\u5728\u5404\u79cd\u6761\u4ef6\u4e0b\u5747\u80fd\u53ef\u9760\u89e6\u53d1\uff0c\u89e6\u53d1\u7535\u8def\u6240\u9001\u51fa\u7684\u89e6\u53d1\u7535\u538b\u548c\u7535\u6d41\u5fc5\u987b\u5927\u4e8e\u53ef\u63a7\u7845\u7684\u89e6\u53d1\u7535\u538bUGT\u4e0e\u89e6\u53d1\u7535\u6d41I<sub>GT<\/sub>\u7684\u6700\u5c0f\u503c\uff0c\u5e76\u4e14\u89e6\u53d1\u8109\u51b2\u7684\u6700\u5c0f\u5bbd\u5ea6\u8981\u6301\u7eed\u5230\u9633\u6781\u7535\u6d41\u4e0a\u5347\u5230\u7ef4\u6301\u7535\u6d41\uff08\u5373\u64ce\u4f4f\u7535\u6d41I<sub>L<\/sub>\uff09\u4ee5\u4e0a\uff0c\u5426\u5219\u53ef\u63a7\u7845\u4f1a\u56e0\u4e3a\u6ca1\u6709\u5b8c\u5168\u5bfc\u901a\u800c\u91cd\u65b0\u5173\u65ad\u3002\u89e6\u53d1\u8109\u51b2\u7684\u5bbd\u5ea6\u4e00\u822c\u53d620~50\u03bcs\uff0c\u5bf9\u4e8e\u5927\u7535\u611f\u8d1f\u8f7d\uff0c\u7531\u4e8e\u7535\u6d41\u4e0a\u5347\u8f83\u6162\uff0c\u89e6\u53d1\u8109\u51b2\u5bbd\u5ea6\u8fd8\u5e94\u52a0\u5927\uff0c\u4e00\u822c\u53d6300\u03bcs~ 1ms\uff0c\u76f8\u5f53\u4e8e50Hz\u6b63\u5f26\u6ce2\u768418\u00b0\u76f8\u4f4d\u89d2\u3002C2\u7684\u5bb9\u91cf\u4e00\u822c\u53ef\u900922nF ~220nF\u3002<\/p>\n<p>\u5728\u8c03\u5149\u5668\u4e2d\uff0c\u5b9e\u73b0\u89e6\u53d1\u529f\u80fd\u7684\u662f\u4e00\u53ea\u53cc\u5411\u89e6\u53d1\u4e8c\u6781\u7ba1\uff0c\u4e00\u822c\u9009\u7528DB3\u7b49\u578b\u53f7\u3002\u4e5f\u6709\u4e00\u4e9b\u8c03\u5149\u5668\u4ea7\u54c1\u4e2d\u7528\u7535\u963b\u5668\u6216\u6c16\u6ce1\u7b49\u5143\u5668\u4ef6\u6765\u4ee3\u66ff\u89e6\u53d1\u4e8c\u6781\u7ba1\uff0c\u4f46\u5b9e\u9645\u4f7f\u7528\u6548\u679c\u5e76\u4e0d\u7406\u60f3\u3002<\/p>\n<p><strong>\u4fdd\u62a4\u7535\u963b<\/strong>\u00a0 R2\u662f\u4fdd\u62a4\u7535\u963b\uff0c\u7528\u6765\u9632\u6b62POT1\u8c03\u6574\u5230\u96f6\u7535\u963b\u65f6\uff0c\u8fc7\u5927\u7684\u7535\u6d41\u9020\u6210\u534a\u5bfc\u4f53\u5668\u4ef6\u7684\u635f\u574f\u3002R2\u592a\u5927\u53c8\u4f1a\u9020\u6210\u53ef\u8c03\u5149\u8303\u56f4\u53d8\u5c0f\uff0c\u6240\u4ee5\u5e94\u9002\u5f53\u9009\u62e9\u3002<\/p>\n<p><strong>\u529f\u7387\u8c03\u6574\u7535\u963b<\/strong>\u00a0 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