{"id":1020,"date":"2018-09-20T00:54:20","date_gmt":"2018-09-20T00:54:20","guid":{"rendered":""},"modified":"2018-09-20T08:54:45","modified_gmt":"2018-09-20T00:54:45","slug":"tl431%e5%8f%af%e8%b0%83%e7%94%b5%e6%ba%90%e7%94%b5%e8%b7%af%e5%9b%be%e5%88%86%e6%9e%90+tl431%e5%87%a0%e7%a7%8d%e4%b8%8d%e5%b8%b8%e8%a7%81%e7%9a%84%e6%8e%a5%e6%b3%95","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1020","title":{"rendered":"tl431\u53ef\u8c03\u7535\u6e90\u7535\u8def\u56fe\u5206\u6790 tl431\u51e0\u79cd\u4e0d\u5e38\u89c1\u7684\u63a5\u6cd5"},"content":{"rendered":"

\n\ttl431\u53ef\u8c03\u7535\u6e90\u7535\u8def\u56fe\u5206\u6790<\/h2>\n

\n\t\u7cbe\u5bc6\u7535\u538b\u57fa\u51c6IC TL431\u662f\u6211\u4eec\u5e38\u89c1\u7684\u7cbe\u5bc6\u7535\u538b\u57fa\u51c6IC \uff0c\u5e94\u7528\u975e\u5e38\u5e7f\u6cdb\u3002\u5176\u8f93\u51fa\u538b\u8fde\u7eed\u53ef\u8c03\u8fbe36V\uff0c\u5de5\u4f5c\u7535\u6d41\u8303\u56f4\u5bbd\u8fbe0.1--100mA\uff0c\u52a8\u6001\u7535\u963b\u5178\u578b\u503c\u4e3a0.22\u6b27\uff0c\u8f93\u51fa\u6742\u6ce2\u4f4e\u3002 \u56fe1\u662f\u5229\u7528\u5b83\u4f5c\u7535\u538b\u57fa\u51c6\u548c\u9a71\u52a8\u5916\u52a0\u573a\u6548\u5e94\u7ba1K790\u4f5c\u8c03\u6574\u7ba1\u6784\u6210\u7684\u8f93\u51fa\u7535\u6d41\u5927(\u7ea66A)\u3001\u7535\u8def\u7b80\u5355\u3001\u5b89\u5168\u7684\u7a33\u538b\u7535\u6e90\u3002<\/p>\n

\n\t\u5de5\u4f5c\u539f\u7406\uff1a<\/strong><\/p>\n

\n\t220v\u7535\u538b\u7ecf\u53d8\u538b\u5668B\u964d\u538b\u3001D1-D4\u6574\u6d41\u3001C1\u6ee4\u6ce2\u3002\u6b64\u5916D5\u3001D6\u3001C2\u3001C3\u7ec4\u6210\u500d\u538b\u7535\u8def(\u4f7f\u5f97Vdc=60V)\uff0cRw\u3001R3\u7ec4\u6210\u5206\u538b\u7535\u8def\uff0cT1431\u3001R1\u7ec4\u6210\u53d6\u6837\u653e\u5927\u7535\u8def\uff0c9013\u3001R2\u7ec4\u6210\u9650\u6d41\u4fdd\u62a4\u7535\u8def<\/u>\uff0c\u573a\u6548\u5e94\u7ba1K790\u4f5c\u8c03\u6574\u7ba1(\u53ef\u76f4\u63a5\u5e76\u8054\u4f7f\u7528)\u4ee5\u53caC5\u662f\u8f93\u51fa\u6ee4\u6ce2\u5668<\/u>\u7535\u8def\u7b49\u3002\u7a33\u538b\u8fc7\u7a0b\u662f\uff1a\u5f53\u8f93\u51fa\u7535\u538b\u964d\u4f4e\u65f6\uff0cf\u70b9\u7535\u4f4d\u964d\u4f4e\uff0c\u7ecfT1431\u5185\u90e8\u653e\u5927\u4f7fe\u70b9\u7535\u538b\u589e\u9ad8\uff0c\u7ecfK790\u8c03\u6574\u540e\uff0cb\u70b9\u7535\u4f4d\u5347\u9ad8;\u53cd\u4e4b\uff0c\u5f53\u8f93\u51fa\u7535\u538b\u589e\u9ad8\u65f6\uff0cf\u70b9\u7535\u4f4d\u5347\u9ad8\uff0ce\u70b9\u7535\u4f4d\u964d\u4f4e\uff0c\u7ecfK790\u8c03\u6574\u540e\uff0cb\u70b9\u7535\u4f4d\u964d\u4f4e\u3002\u4ece\u800c\u4f7f\u8f93\u51fa\u7535\u538b\u7a33\u5b9a\u3002\u5f53\u8f93\u51fa\u7535\u6d41\u5927\u4e8e6A\u65f6\uff0c\u4e09\u6781\u7ba19013\u5904\u4e8e\u622a\u6b62\uff0c\u4f7f\u8f93\u51fa\u7535\u6d41\u88ab\u9650\u5236\u57286A\u4ee5\u5185\uff0c\u4ece\u800c\u8fbe\u5230\u9650\u6d41\u7684\u76ee\u7684\u3002<\/p>\n

\n\t\"tl431\u53ef\u8c03\u7535\u6e90\u7535\u8def\u56fe\u5206\u6790<\/p>\n

\n\ttl431\u51e0\u79cd\u4e0d\u5e38\u89c1\u7684\u63a5\u6cd5<\/h2>\n

\n\t\u4e0b\u9762\u662f\u65e5\u5e38\u4e2d\u51e0\u79cd\u5e76\u4e0d\u5e38\u89c1\u7684\u63a5\u6cd5\uff1a<\/p>\n

\n\t\"tl431\u53ef\u8c03\u7535\u6e90\u7535\u8def\u56fe\u5206\u6790<\/p>\n

\n\t\u56fe(1)\u662fTL431\u7684\u5178\u578b\u63a5\u6cd5\uff0c\u8f93\u51fa\u4e00\u4e2a\u56fa\u5b9a\u7535\u538b\u503c\uff0c\u8ba1\u7b97\u516c\u5f0f\u662f\uff1a Vout = (R1+R2)*2.5\/R2\uff0c\u540c\u65f6R3\u7684\u6570\u503c\u5e94\u8be5\u6ee1\u8db31mA < (Vcc-Vout)\/R3 < 500mA\u3002<\/p>\n

\n\t\"tl431\u53ef\u8c03\u7535\u6e90\u7535\u8def\u56fe\u5206\u6790<\/p>\n

\n\t\u5f53R1\u53d6\u503c\u4e3a0\u7684\u65f6\u5019\uff0cR2\u53ef\u4ee5\u7701\u7565\uff0c\u8fd9\u65f6\u5019\u7535\u8def\u53d8\u6210\u56fe(2)\u7684\u5f62\u5f0f\uff0cTL431\u5728\u8fd9\u91cc\u76f8\u5f53\u4e8e\u4e00\u4e2a2.5V\u7a33\u538b\u7ba1\u3002<\/p>\n

\n\t\u5229\u7528TL431\u8fd8\u53ef\u4ee5\u7ec4\u6210\u9274\u5e45\u5668\uff0c\u5982\u56fe(3)\uff0c\u8fd9\u4e2a\u7535\u8def\u5728\u8f93\u5165\u7535\u538b Vin < (R1+R2)*2.5\/R2 \u7684\u65f6\u5019\u8f93\u51faVout\u4e3a\u9ad8\u7535\u5e73\uff0c\u53cd\u4e4b\u8f93\u51fa\u63a5\u8fd12V\u7684\u7535\u5e73\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\u5f53Vin\u5728(R1+R2)*2.5\/R2\u9644\u8fd1\u4ee5\u5fae\u5c0f\u5e45\u5ea6\u6ce2\u52a8\u7684\u65f6\u5019\uff0c\u7535\u8def\u4f1a\u8f93\u51fa\u4e0d\u7a33\u5b9a\u7684\u503c\u3002<\/p>\n

\n\tTL431\u53ef\u4ee5\u7528\u6765\u63d0\u5347\u4e00\u4e2a\u8fd1\u5730\u7535\u538b\uff0c\u5e76\u4e14\u5c06\u5176\u53cd\u76f8\u3002\u5982\u56fe(4)\uff0c\u8f93\u51fa\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a Vout = ( (R1+R2)*2.5 - R1*Vin )\/R2\u3002<\/p>\n

\n\t\u5f53R1 = R2\u7684\u65f6\u5019\uff0cVout = 5 - Vin\u3002\u8fd9\u4e2a\u7535\u8def\u53ef\u4ee5\u7528\u6765\u628a\u4e00\u4e2a\u63a5\u8fd1\u5730\u7684\u7535\u538b\u63d0\u5347\u5230\u4e00\u4e2a\u53ef\u4ee5\u9884\u5148\u8bbe\u5b9a\u7684\u8303\u56f4\u5185\uff0c\u552f\u4e00\u9700\u8981\u6ce8\u610f\u7684\u662fTL431\u7684\u8f93\u51fa\u8303\u56f4\u4e0d\u662f\u6ee1\u5e45\u7684\u3002<\/p>\n

\n\tTL431\u81ea\u8eab\u6709\u76f8\u5f53\u9ad8\u7684\u589e\u76ca(\u6211\u5728\u4eff\u771f\u4e2d\u7c97\u7565\u6d4b\u8bd5\uff0c\u6709\u5927\u698246db)\uff0c\u6240\u4ee5\u53ef\u4ee5\u7528\u4f5c\u653e\u5927\u5668<\/u>\u3002<\/p>\n

\n\t\u56fe(5)\u663e\u793a\u4e86\u4e00\u4e2a\u7528TL431\u7ec4\u6210\u7684\u76f4\u6d41\u7535\u538b\u653e\u5927\u5668\uff0c\u8fd9\u4e2a\u7535\u8def\u7684\u653e\u5927\u500d\u6570\u7531R1\u548cRin\u51b3\u5b9a\uff0c\u76f8\u5f53\u4e8e\u8fd0\u653e\u7684\u8d1f\u53cd\u9988\u56de\u8def\uff0c\u800c\u5176\u9759\u6001\u8f93\u51fa\u7535\u538b\u7531R1\u548cR2\u51b3\u5b9a\u3002 \u8fd9\u4e2a\u7535\u8def\u7684\u4f18\u70b9\u5728\u4e8e\uff0c\u5b83\u7ed3\u6784\u7b80\u5355\uff0c\u7cbe\u5ea6\u4e5f\u4e0d\u9519\uff0c\u80fd\u591f\u63d0\u4f9b\u7a33\u5b9a\u7684\u9759\u6001\u7279\u6027\u3002\u7f3a\u70b9\u662f\u8f93\u5165\u963b\u6297\u8f83\u5c0f\uff0cVout\u7684\u6446\u5e45\u6709\u9650\u3002<\/p>\n

\n\t\"tl431\u53ef\u8c03\u7535\u6e90\u7535\u8def\u56fe\u5206\u6790<\/p>\n

\n\t\u56fe(6)\u662f\u4ea4\u6d41\u653e\u5927\u5668\uff0c\u8fd9\u4e2a\u7ed3\u6784\u548c\u76f4\u6d41\u653e\u5927\u5668\u5f88\u76f8\u4f3c\uff0c\u800c\u4e14\u5177\u6709\u540c\u6837\u7684\u4f18\u7f3a\u70b9\u3002\u6211\u6b63\u5728\u5c1d\u8bd5\u7528\u8fd9\u4e2a\u653e\u5927\u5668\u4ee3\u66ff\u6b21\u7ea7\u8fd0\u653e\u6765\u653e\u5927\u70ed\u91ca\u7ea2\u5916\u4f20\u611f\u5668<\/u>\u7684\u8f93\u51fa\u4fe1\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

tl431\u53ef\u8c03\u7535\u6e90\u7535\u8def\u56fe\u5206\u6790 \u7cbe\u5bc6\u7535\u538b\u57fa\u51c6IC TL431\u662f\u6211\u4eec\u5e38\u89c1\u7684\u7cbe\u5bc6\u7535\u538b\u57fa\u51c6IC \uff0c\u5e94\u7528\u975e\u5e38\u5e7f\u6cdb\u3002\u5176\u8f93\u51fa\u538b\u8fde\u7eed\u53ef\u8c03\u8fbe36V\uff0c\u5de5\u4f5c\u7535\u6d41\u8303\u56f4\u5bbd\u8fbe0.1–100mA\uff0c\u52a8\u6001\u7535\u963b\u5178\u578b\u503c\u4e3a0.22\u6b27\uff0c\u8f93\u51fa\u6742\u6ce2\u4f4e\u3002<\/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\/1020"}],"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=1020"}],"version-history":[{"count":0,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/1020\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1020"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}