{"id":87,"date":"2025-07-31T13:00:32","date_gmt":"2025-07-31T05:00:32","guid":{"rendered":"https:\/\/www.shadabuliu.top\/?p=87"},"modified":"2025-08-10T16:34:36","modified_gmt":"2025-08-10T08:34:36","slug":"ne555","status":"publish","type":"post","link":"https:\/\/www.shadabuliu.top\/index.php\/2025\/07\/31\/87\/","title":{"rendered":"NE555"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\u7b80\u4ecb<\/h1>\n\n\n\n<p><strong>NE555<\/strong> \u662f\u4e00\u79cd\u7ecf\u5178\u5b9a\u65f6\u5668\u96c6\u6210\u7535\u8def\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e<strong>\u5ef6\u65f6\u3001\u7535\u5e73\u8f6c\u6362\u3001\u8109\u51b2\u751f\u6210\u3001\u632f\u8361\u5668\u3001PWM\u3001\u5b9a\u65f6\u63a7\u5236\u7b49\u7535\u8def<\/strong>\u4e2d\u3002<br><strong>\u7535\u6e90\u7535\u538b\u8303\u56f4<\/strong>\uff1a4.5V ~ 15V\u3002<br><strong>\u8f93\u51fa\u7535\u6d41<\/strong>\uff1a\u6700\u5927\u7ea6 200mA\uff0c\u53ef\u76f4\u63a5\u9a71\u52a8 LED\u3001\u5c0f\u578b\u7ee7\u7535\u5668\u3001\u626c\u58f0\u5668\u7b49\u3002<br>\u8f93\u51fa\u9ad8\u7535\u5e73\u65f6\u7535\u538b\u7b49\u4e8e\u7535\u6e90\u7535\u538b\u3002\u5f53\u4f9b\u7535\u4e3a 5V \u65f6\uff0c\u8f93\u51fa\u7535\u5e73\u4e0e TTL \u8f93\u5165\u517c\u5bb9\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u6784\u6210<\/h1>\n\n\n\n<p>NE555\u7b80\u5316\u7248\u539f\u7406\u56fe\u5982\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img.alicdn.com\/imgextra\/i3\/3595990767\/O1CN015TlaQq1HXKrSsvlOb_!!3595990767.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img.alicdn.com\/imgextra\/i3\/3595990767\/O1CN015TlaQq1HXKrSsvlOb_!!3595990767.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:500px\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u6bd4\u8f83\u5668<\/h2>\n\n\n\n<p>\u5de6\u4fa7\u4e3a\u4e24\u4e2a\u6bd4\u8f83\u5668\uff0c\u6bd4\u8f83\u5668\u5c31\u662f\u7528\u6765\u6bd4\u8f83\u7535\u538b\u9ad8\u4f4e\u7684\u3002\u4e0b\u56fe\u4e3a\u6bd4\u8f83\u5668\u529f\u80fd\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img.alicdn.com\/imgextra\/i1\/3595990767\/O1CN01MtXkEf1HXKrR8JuVD_!!3595990767.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img.alicdn.com\/imgextra\/i1\/3595990767\/O1CN01MtXkEf1HXKrR8JuVD_!!3595990767.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:500px\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">RS\u89e6\u53d1\u5668<\/h2>\n\n\n\n<p>\u4e2d\u95f4\u662f\u4e00\u4e2aRS\u89e6\u53d1\u5668\u3002RS\u89e6\u53d1\u5668\u7684\u529f\u80fd\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img.alicdn.com\/imgextra\/i3\/3595990767\/O1CN01VfpbE51HXKrRD4Z97_!!3595990767.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img.alicdn.com\/imgextra\/i3\/3595990767\/O1CN01VfpbE51HXKrRD4Z97_!!3595990767.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:500px\"\/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u8f93\u51fa\u7535\u8def<\/h2>\n\n\n\n<p>\u6700\u540e\u7ecf\u8fc7\u8f93\u51fa\u7535\u8def\u8f93\u51fa\uff0c\u8f93\u51fa\u7535\u5e73\u548cRS\u89e6\u53d1\u5668\u7684Q\u7aef\u662f\u4e00\u6837\u7684\uff0c\u6dfb\u52a0\u8f93\u51fa\u7535\u8def\u4e3b\u8981\u662f\u4e3a\u4e86\u63d0\u9ad8\u82af\u7247\u7684\u8f93\u51fa\u7535\u6d41\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u653e\u7535\u7535\u8def<\/h2>\n\n\n\n<p>\u653e\u7535\u7535\u8def\u5c31\u662f\u7531\u4e00\u4e2aNPN\u4e09\u6781\u7ba1\u7ec4\u6210\uff0c\u4e09\u6781\u7ba1\u63a7\u5236\u7aef\u4e0e\u53cdQ\u76f8\u8fde\uff0c\u5f53\u53cdQ\u4e3a\u9ad8\u7535\u5e73\u65f6\u5bfc\u901a\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5206\u538b\u7535\u963b<\/h2>\n\n\n\n<p>\u5de6\u4fa7\u6709\u4e09\u4e2a\u4e32\u8054\u8d77\u6765\u7684\u7535\u963b\uff0c\u8d77\u5230\u5206\u538b\u4f5c\u7528\u3002\u53ef\u5206\u5f97$\\frac{1}{3}V_{cc}$\u548c$\\frac{2}{3}V_{cc}$\u7684\u7535\u538b\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u539f\u7406<\/h1>\n\n\n\n<p>\u4e0b\u56fe\u4e3a555\u7b49\u6548\u539f\u7406\u56fe<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img.alicdn.com\/imgextra\/i3\/3595990767\/O1CN01WrfzY51HXKrS87YX4_!!3595990767.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img.alicdn.com\/imgextra\/i3\/3595990767\/O1CN01WrfzY51HXKrS87YX4_!!3595990767.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:500px\"\/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img.alicdn.com\/imgextra\/i4\/3595990767\/O1CN01mMPcdu1HXKrRqyHq1_!!3595990767.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img.alicdn.com\/imgextra\/i4\/3595990767\/O1CN01mMPcdu1HXKrRqyHq1_!!3595990767.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:500px\"\/><\/div><\/figure>\n\n\n\n<style type=\"text\/css\">\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-1qi4{border-color:inherit;font-family:inherit;font-size:100%;font-weight:bold;position:-webkit-sticky;position:sticky;\n  text-align:center;top:-1px;vertical-align:middle;will-change:transform}\n.tg .tg-cfzr{font-family:inherit;font-size:100%;text-align:center;vertical-align:middle}\n.tg .tg-98u3{font-family:inherit;font-size:100%;font-weight:bold;position:-webkit-sticky;position:sticky;text-align:center;top:-1px;\n  vertical-align:middle;will-change:transform}\n.tg .tg-y2hs{border-color:inherit;font-family:inherit;font-size:100%;text-align:center;vertical-align:middle}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}<\/style>\n<div class=\"tg-wrap\"><table class=\"tg\"><thead>\n  <tr>\n    <th class=\"tg-1qi4\">\u5e8f\u53f7<\/th>\n    <th class=\"tg-1qi4\">\u540d\u79f0<\/th>\n    <th class=\"tg-1qi4\">\u542b\u4e49<\/th>\n    <th class=\"tg-98u3\">\u7535\u6c14\u7279\u6027<\/th>\n  <\/tr><\/thead>\n<tbody>\n  <tr>\n    <td class=\"tg-y2hs\">1<\/td>\n    <td class=\"tg-y2hs\">GND<\/td>\n    <td class=\"tg-y2hs\">\u63a5\u5730\u5f15\u811a<\/td>\n    <td class=\"tg-cfzr\">\u8fde\u63a5\u5230\u7535\u8def\u7684\u5730\u4ee5\u63d0\u4f9b\u7535\u8def\u7684\u53c2\u8003\u96f6\u7535\u4f4d\u3002<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">2<\/td>\n    <td class=\"tg-cfzr\">TRIG\uff08Trigger\uff09<\/td>\n    <td class=\"tg-cfzr\">\u89e6\u53d1\u5f15\u811a<\/td>\n    <td class=\"tg-cfzr\">\u4f4e\u4e8e$\\frac{1}{3}V_{cc}$\u65f6\u89e6\u53d1\u8f93\u51fa\u9ad8\u7535\u5e73<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">3<\/td>\n    <td class=\"tg-cfzr\">OUT<\/td>\n    <td class=\"tg-cfzr\">\u8f93\u51fa\u5f15\u811a<\/td>\n    <td class=\"tg-cfzr\">NE555\u7684\u8f93\u51fa\u4fe1\u53f7<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">4<\/td>\n    <td class=\"tg-cfzr\">RESET<\/td>\n    <td class=\"tg-cfzr\">\u590d\u4f4d\u5f15\u811a<\/td>\n    <td class=\"tg-cfzr\">\u5f53RESET\u5f15\u811a\u63a5\u6536\u5230\u4f4e\u7535\u5e73\u4fe1\u53f7\u65f6\uff0c\u5c06\u590d\u4f4dNE555\u5e76\u5c06\u8f93\u51fa\u5f15\u811a\u62c9\u4f4e\uff1b\u9ad8\u7535\u5e73\u65f6\u6b63\u5e38\u5de5\u4f5c<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">5<\/td>\n    <td class=\"tg-cfzr\">CONT\uff08Control Voltage\uff09<\/td>\n    <td class=\"tg-cfzr\">\u63a7\u5236\u7535\u538b\u5f15\u811a<\/td>\n    <td class=\"tg-cfzr\">\u901a\u8fc7\u63a7\u5236\u7535\u538b\u5f15\u811a\uff0c\u53ef\u4ee5\u8c03\u6574NE555\u7684\u9608\u503c\u548c\u89e6\u53d1\u7535\u5e73<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">6<\/td>\n    <td class=\"tg-cfzr\">THRES\uff08Threshold\uff09<\/td>\n    <td class=\"tg-cfzr\">\u9608\u503c\u5f15\u811a<\/td>\n    <td class=\"tg-cfzr\">\u9ad8\u4e8e$\\frac{2}{3}V_{cc}$\u65f6\u89e6\u53d1\u5b9a\u65f6\u5668\u590d\u4f4d\uff0c\u4f7f\u8f93\u51fa\u53d8\u4f4e<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">7<\/td>\n    <td class=\"tg-cfzr\">DISCH\uff08Discharge\uff09<\/td>\n    <td class=\"tg-cfzr\">\u653e\u7535\u5f15\u811a<\/td>\n    <td class=\"tg-cfzr\">\u5f53\u8f93\u51fa\u4e3a\u4f4e\u7535\u5e73\u65f6\uff0c\u6b64\u5f15\u811a\u53ef\u770b\u4f5cGND\uff1b\u5f53\u8f93\u51fa\u4e3a\u9ad8\u7535\u5e73\u65f6\uff0c\u6b64\u5f15\u811a\u60ac\u7a7a\uff08\u5f00\u6f0f\u72b6\u6001\uff09\uff1b\u5e38\u7528\u4e8e\u7ed9\u7535\u5bb9\u653e\u7535<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">8<\/td>\n    <td class=\"tg-cfzr\">$V_{cc}$<\/td>\n    <td class=\"tg-cfzr\">\u7535\u6e90\u5f15\u811a<\/td>\n    <td class=\"tg-cfzr\">\u8fde\u63a5\u5230\u7535\u6e90\u6b63\u6781\uff084.5V ~ 15V\uff09\u4ee5\u63d0\u4f9b\u7535\u8def\u6240\u9700\u7684\u7535\u6e90\u7535\u538b\uff0c\u540c\u65f6\u4e5f\u662f\u9ad8\u7535\u5e73\u8f93\u51fa\u65f6\u7684\u7535\u538b<\/td>\n  <\/tr>\n<\/tbody><\/table><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>NE555\u8f93\u51fa\u9ad8\u7535\u5e73\u7684\u60c5\u51b5\uff1a<br>\u82e5\u8981NE555\u8f93\u51fa\u9ad8\u7535\u5e73\u5219\u9700\u8981RS\u89e6\u53d1\u5668S\u7aef\u8f93\u5165\u4e3a\u9ad8\u7535\u5e73\uff0c\u53732\u811a\uff08TRIG\uff0c\u7531Trigger\u7b80\u5199\uff0c\u7ffb\u8bd1\u4e3a\u89e6\u53d1\uff09\u7535\u538b\u9700\u8981\u5c0f\u4e8e$\\frac{1}{3}V_{cc}$\uff1b<br>\u6b64\u65f6\u653e\u7535\u4e09\u6781\u7ba1\u622a\u6b62\u3002<\/li>\n\n\n\n<li>NE555\u8f93\u51fa\u4f4e\u7535\u5e73\u7684\u60c5\u51b5\uff1a<br>\u82e5\u8981NE555\u8f93\u51fa\u4f4e\u7535\u5e73\u5219\u9700\u8981RS\u89e6\u53d1\u5668R\u7aef\u8f93\u5165\u4e3a\u9ad8\u7535\u5e73\uff0c\u53736\u811a\uff08THRES\uff09\u7535\u538b\u9700\u8981\u5927\u4e8e$\\frac{2}{3}V_{cc}$\uff1b<br>\u6b64\u65f6\u653e\u7535\u4e09\u6781\u7ba1\u5bfc\u901a\u3002<br><\/li>\n<\/ul>\n\n\n\n<p><strong>\u4e2a\u4eba\u7406\u89e3<\/strong>\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img.alicdn.com\/imgextra\/i3\/3595990767\/O1CN01VfpbE51HXKrRD4Z97_!!3595990767.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img.alicdn.com\/imgextra\/i3\/3595990767\/O1CN01VfpbE51HXKrRD4Z97_!!3595990767.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:500px\"\/><\/div><\/figure>\n\n\n\n<p>\u5982\u56fe\uff0cRS\u89e6\u53d1\u5668\u4e2dR\u4e3a\u590d\u4f4d\u7aef\uff0c\u5f53R\u4e3a\u9ad8\u7535\u5e73\u65f6\u8f93\u51fa0\uff1bS\u4e3a\u7f6e\u4f4d\u7aef\uff0c\u5f53S\u4e3a\u9ad8\u7535\u5e73\u65f6\u8f93\u51fa1\uff1b\u800c555\u7684\u8f93\u51fa\u548c\u89e6\u53d1\u5668\u7684Q\u7aef\u7535\u5e73\u662f\u4e00\u81f4\u7684\u3002<\/p>\n\n\n\n<p>\u5982\u679c2\u811aTRIG\u89e6\u53d1\u5f15\u811a\u4f4e\u4e8e$\\frac{1}{3}V_{cc}$\u65f6\u4f1a\u5bfc\u81f4S\u4e3a\u9ad8\u7535\u5e73\uff0c\u8fdb\u800c\u4f7f555\u8f93\u51fa\u9ad8\u7535\u5e73\uff1b\u4e5f\u5c31\u662f\u8bf42\u811a\u4e3a\u4f4e\u7535\u5e73\u65f6\u8f93\u51fa\u4e3a\u9ad8\u7535\u5e73\uff0c\u8fd9\u4e2a\u4f4e\u7535\u5e73\u53ea\u9700\u8981\u4e00\u77ac\u95f4\u5c31\u53ef\u4ee5\u4e86\uff0c\u65e0\u9700\u6301\u7eed\u4fdd\u6301\u4f4e\u7535\u5e73\u3002\u56e0\u4e3aS\u7aef\u53ea\u9700\u8981\u4e00\u4e2a\u9ad8\u7535\u5e73\u5c31\u53ef\u4ee5\u65f6\u89e6\u53d1\u5668\u8f93\u51fa\u4e3a1\uff0c\u5f53S\u7aef\u518d\u4ece\u9ad8\u7535\u5e73\u53d8\u4e3a\u4f4e\u7535\u5e73\u65f6\u89e6\u53d1\u5668\u4f1a\u4fdd\u6301\u4e0a\u4e00\u4e2a\u8f93\u51fa\u4e0d\u53d8\u3002\u5373\uff0c\u6b64\u65f6S\u7aef\u5df2\u7ecf\u6539\u53d8\u4e0d\u4e86555\u7684\u8f93\u51fa\u4e86\uff0cS\u7aef\u4e3a\u9ad8\u7535\u5e73\u65f6\u8f93\u51fa\u4e3a\u9ad8\u7535\u5e73\uff0cS\u7aef\u4e3a\u4f4e\u7535\u5e73\u65f6\u8f93\u51fa\u4f9d\u65e7\u4e3a\u9ad8\u7535\u5e73\uff1b\u8fd9\u65f6\u60f3\u8981\u6539\u53d8555\u7684\u8f93\u51fa\uff0c\u53ea\u80fd\u4f7fR\u7aef\u4e3a\u9ad8\u7535\u5e73\uff0c\u4e5f\u5c31\u662f\u8bf46\u811aTHRES\u9608\u503c\u5f15\u811a\u9ad8\u4e8e$\\frac{2}{3}V_{cc}$\u624d\u80fd\u4f7f\u8f93\u51fa\u53d8\u4e3a\u4f4e\u7535\u5e73\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u9700\u8981\u989d\u5916\u8bf4\u660e\u4e00\u4e0b\uff0c\u7406\u8bba\u4e0a\uff0c\u5982\u679c2\u811aTRIG\u4e3a\u4f4e\u7535\u5e73\uff0c6\u811aTHRES\u4e3a\u9ad8\u7535\u5e73\u65f6\uff0c\u5bf9\u5e94\u7684RS\u89e6\u53d1\u5668\u7684R\u7aef\u548cS\u7aef\u90fd\u662f\u9ad8\u7535\u5e73\u72b6\u6001\uff0c\u8fd9\u65f6\u8f93\u51fa\u5c31\u4f1a\u4e0d\u786e\u5b9a\u3002\u4f46\u662fEN555\u5bf9\u8fd9\u79cd\u60c5\u51b5\u505a\u4e86\u7279\u6b8a\u5904\u7406\uff0c\u5f53\u51fa\u73b0\u8fd9\u79cd\u60c5\u51b5\u65f6\u4f1a\u7a33\u5b9a\u8f93\u51fa\u9ad8\u7535\u5e73\u3002<\/p>\n\n\n\n<p>\u8f93\u51fa\u7aef3\u811a\u7684\u7535\u5e73\u4e0e\u8f93\u5165\u7684\u5173\u7cfb\u5982\u4e0b\u8868\u6240\u793a\uff1a<\/p>\n\n\n\n<style type=\"text\/css\">\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-cfzr{font-family:inherit;font-size:100%;text-align:center;vertical-align:middle}\n.tg .tg-98u3{font-family:inherit;font-size:100%;font-weight:bold;position:-webkit-sticky;position:sticky;text-align:center;top:-1px;\n  vertical-align:middle;will-change:transform}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}<\/style>\n<div class=\"tg-wrap\"><table class=\"tg\"><thead>\n  <tr>\n    <th class=\"tg-98u3\">2\u811aTrigger<\/th>\n    <th class=\"tg-98u3\">6\u811aThreshold<\/th>\n    <th class=\"tg-98u3\">3\u811aOutput<\/th>\n  <\/tr><\/thead>\n<tbody>\n  <tr>\n    <td class=\"tg-cfzr\">$&lt;\\frac{1}{3}V_{cc}$<\/td>\n    <td class=\"tg-cfzr\">$&lt;\\frac{2}{3}V_{cc}$<\/td>\n    <td class=\"tg-cfzr\">\u9ad8<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">$&gt;\\frac{1}{3}V_{cc}$<\/td>\n    <td class=\"tg-cfzr\">$&gt;\\frac{2}{3}V_{cc}$<\/td>\n    <td class=\"tg-cfzr\">\u4f4e<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">$&gt;\\frac{1}{3}V_{cc}$<\/td>\n    <td class=\"tg-cfzr\">$&lt;\\frac{1}{3}V_{cc}$<\/td>\n    <td class=\"tg-cfzr\">\u4fdd\u6301\u4e0d\u53d8<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">$&lt;\\frac{1}{3}V_{cc}$<\/td>\n    <td class=\"tg-cfzr\">$&gt;\\frac{2}{3}V_{cc}$<\/td>\n    <td class=\"tg-cfzr\">\u9ad8<\/td>\n  <\/tr>\n<\/tbody>\n<\/table><\/div>\n\n\n\n<p>\u5982\u679c\u89c4\u5b9a2\u811aTrigger$&lt;\\frac{1}{3}V_{cc}$\u65f6\u4e3a\u89e6\u53d1\u72b6\u6001\uff0c6\u811aThreshold\u4e3a$&gt;\\frac{2}{3}V_{cc}$\u65f6\u4e3a\u89e6\u53d1\u72b6\u6001\uff0c\u5219\u4e0a\u8868\u53ef\u4ee5\u66f4\u76f4\u89c2\u7684\u8868\u793a\u4e3a\uff1a<\/p>\n\n\n\n<style type=\"text\/css\">\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-cfzr{font-family:inherit;font-size:100%;text-align:center;vertical-align:middle}\n.tg .tg-98u3{font-family:inherit;font-size:100%;font-weight:bold;position:-webkit-sticky;position:sticky;text-align:center;top:-1px;\n  vertical-align:middle;will-change:transform}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}<\/style>\n<div class=\"tg-wrap\"><table class=\"tg\"><thead>\n  <tr>\n    <th class=\"tg-98u3\">2\u811aTrigger<\/th>\n    <th class=\"tg-98u3\">6\u811aThreshold<\/th>\n    <th class=\"tg-98u3\">3\u811aOutput<\/th>\n  <\/tr><\/thead>\n<tbody>\n  <tr>\n    <td class=\"tg-cfzr\">\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u9ad8<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u4f4e<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u4fdd\u6301\u4e0d\u53d8<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-cfzr\">\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u9ad8<\/td>\n  <\/tr>\n<\/tbody>\n<\/table><\/div>\n\n\n\n<h1 class=\"wp-block-heading\">\u5de5\u4f5c\u6a21\u5f0f<\/h1>\n\n\n\n<p>NE555 \u5177\u6709\u4e09\u79cd\u57fa\u672c\u5de5\u4f5c\u6a21\u5f0f\uff1a<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5355\u7a33\u6001\u6a21\u5f0f<\/h2>\n\n\n\n<p>\u5355\u7a33\u6001\u6a21\u5f0f\u662f\u6307\u82af\u7247\u6b63\u5e38\u5de5\u4f5c\u65f6\u6709\u4e00\u4e2a\u7a33\u5b9a\u7684\u72b6\u6001\uff0c\u53ea\u6709\u5728<strong>\u5916\u90e8\u89e6\u53d1\u4fe1\u53f7<\/strong>\u5230\u6765\u65f6\uff0c\u624d\u4f1a<strong>\u8fdb\u5165\u6682\u7a33\u6001<\/strong>\uff0c\u7ef4\u6301\u4e00\u6bb5\u8bbe\u5b9a\u7684\u65f6\u95f4\u540e\uff0c<strong>\u81ea\u52a8\u56de\u5230\u7a33\u5b9a\u72b6\u6001<\/strong>\u3002\u7ecf\u5e38\u7528\u4f5c<strong>\u5b9a\u65f6\u5668\/\u5ef6\u65f6\u5668<\/strong>\u3002<br>\u4e0b\u56fe\u662f\u5e38\u7528\u7684\u4e00\u79cd\u7535\u8def\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img.alicdn.com\/imgextra\/i3\/3595990767\/O1CN014sWJsi1HXKrSsxNCV_!!3595990767.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img.alicdn.com\/imgextra\/i3\/3595990767\/O1CN014sWJsi1HXKrSsxNCV_!!3595990767.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:500px\"\/><\/div><\/figure>\n\n\n\n<p>\u6309\u952e\u6ca1\u6709\u88ab\u6309\u4e0b\u65f6TRIG\u811a\u88ab10K\u7535\u963b\u62c9\u9ad8\uff0cTHRES\u811a\u548cDISCH\u811a\u63a5\u5728\u4e00\u8d77\uff0c\u901a\u8fc7\u7535\u963bR\u62c9\u9ad8\uff0c\u6b64\u65f6<\/p>\n\n\n\n<style type=\"text\/css\">\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-cfzr{font-family:inherit;font-size:100%;text-align:center;vertical-align:middle}\n.tg .tg-98u3{font-family:inherit;font-size:100%;font-weight:bold;position:-webkit-sticky;position:sticky;text-align:center;top:-1px;\n  vertical-align:middle;will-change:transform}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}<\/style>\n<div class=\"tg-wrap\"><table class=\"tg\"><thead>\n  <tr>\n    <th class=\"tg-98u3\">2\u811aTrigger<\/th>\n    <th class=\"tg-98u3\">6\u811aThreshold<\/th>\n    <th class=\"tg-98u3\">3\u811aOutput<\/th>\n  <\/tr><\/thead>\n<tbody>\n  <tr>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u4f4e<\/td>\n  <\/tr>\n<\/tbody>\n<\/table><\/div>\n\n\n\n<p>\u4e0a\u9762\u8bf4\u8fc7\uff0c7\u811aDISCH\u662f\u901a\u8fc7\u4e00\u4e2a\u4e09\u6781\u7ba1\u4e0eGND\u76f8\u8fde\u7684\uff0c\u5f53\u8f93\u51fa\u4e3a\u4f4e\u7535\u5e73\u65f6\u4e09\u6781\u7ba1\u5bfc\u901a\uff0c\u6b64\u65f66\u811aThreshold\u4e0e7\u811aDISCH\u5747\u4e3a\u4f4e\u7535\u5e73\uff0c\u7535\u5bb9C\u88ab\u653e\u7535\u3002<\/p>\n\n\n\n<style type=\"text\/css\">\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-cfzr{font-family:inherit;font-size:100%;text-align:center;vertical-align:middle}\n.tg .tg-98u3{font-family:inherit;font-size:100%;font-weight:bold;position:-webkit-sticky;position:sticky;text-align:center;top:-1px;\n  vertical-align:middle;will-change:transform}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}<\/style>\n<div class=\"tg-wrap\"><table class=\"tg\"><thead>\n  <tr>\n    <th class=\"tg-98u3\">2\u811aTrigger<\/th>\n    <th class=\"tg-98u3\">6\u811aThreshold<\/th>\n    <th class=\"tg-98u3\">3\u811aOutput<\/th>\n  <\/tr><\/thead>\n<tbody>\n  <tr>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u4fdd\u6301\u4e0d\u53d8<\/td>\n  <\/tr>\n<\/tbody>\n<\/table><\/div>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\u6309\u952e\u672a\u6309\u4e0b\u65f6\uff0c555\u8f93\u51fa\u4e3a\u4f4e\u7535\u5e73\u3002<\/p>\n\n\n\n<p>\u5f53\u6309\u952e\u88ab\u6309\u4e0b\u540e\u53c8\u677e\u5f00\u65f6\uff0c2\u811aTrigger\u901a\u8fc7\u6309\u952e\u4e0eGND\u76f8\u8fde\uff0c\u4f1a\u51fa\u73b0\u77ed\u6682\u4f4e\u7535\u5e73\uff0c\u6b64\u65f6<\/p>\n\n\n\n<style type=\"text\/css\">\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-cfzr{font-family:inherit;font-size:100%;text-align:center;vertical-align:middle}\n.tg .tg-98u3{font-family:inherit;font-size:100%;font-weight:bold;position:-webkit-sticky;position:sticky;text-align:center;top:-1px;\n  vertical-align:middle;will-change:transform}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}<\/style>\n<div class=\"tg-wrap\"><table class=\"tg\"><thead>\n  <tr>\n    <th class=\"tg-98u3\">2\u811aTrigger<\/th>\n    <th class=\"tg-98u3\">6\u811aThreshold<\/th>\n    <th class=\"tg-98u3\">3\u811aOutput<\/th>\n  <\/tr><\/thead>\n<tbody>\n  <tr>\n    <td class=\"tg-cfzr\">\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u9ad8<\/td>\n  <\/tr>\n<\/tbody>\n<\/table><\/div>\n\n\n\n<p>555\u8f93\u51fa\u9ad8\u7535\u5e73\uff0c\u8fd9\u65f67\u811aDISCH\u4e0d\u518d\u4e0eGND\u76f8\u8fde\uff0c6\u811aThreshold\u5f00\u59cb\u65f6\u4ecd\u7136\u4e3a\u4f4e\u7535\u5e73\uff0c\u7535\u6d41\u5f00\u59cb\u901a\u8fc7\u7535\u963bR\u7ed9\u7535\u5bb9C\u5145\u7535\u3002<\/p>\n\n\n\n<p>6\u811aThreshold\u7684\u7535\u538b\u5373\u4e3a\u7535\u5bb9\u4e24\u7aef\u7684\u7535\u538b\uff0c\u5f53\u7535\u5bb9\u7535\u538b\u88ab\u5145\u81f3\u9ad8\u4e8e$\\frac{2}{3}V_{cc}$\u65f6\uff0c6\u811aThreshold\u53d8\u4e3a\u89e6\u53d1\u72b6\u6001\uff0c\u6b64\u65f6<\/p>\n\n\n\n<style type=\"text\/css\">\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-cfzr{font-family:inherit;font-size:100%;text-align:center;vertical-align:middle}\n.tg .tg-98u3{font-family:inherit;font-size:100%;font-weight:bold;position:-webkit-sticky;position:sticky;text-align:center;top:-1px;\n  vertical-align:middle;will-change:transform}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}<\/style>\n<div class=\"tg-wrap\"><table class=\"tg\"><thead>\n  <tr>\n    <th class=\"tg-98u3\">2\u811aTrigger<\/th>\n    <th class=\"tg-98u3\">6\u811aThreshold<\/th>\n    <th class=\"tg-98u3\">3\u811aOutput<\/th>\n  <\/tr><\/thead>\n<tbody>\n  <tr>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u4f4e<\/td>\n  <\/tr>\n<\/tbody>\n<\/table><\/div>\n\n\n\n<p>6\u811aThreshold\u30017\u811aDISCH\u91cd\u65b0\u4e0eGND\u76f8\u8fde\uff0c\u7535\u5bb9C\u88ab\u653e\u7535\u3002\u6b64\u65f6<\/p>\n\n\n\n<style type=\"text\/css\">\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-cfzr{font-family:inherit;font-size:100%;text-align:center;vertical-align:middle}\n.tg .tg-98u3{font-family:inherit;font-size:100%;font-weight:bold;position:-webkit-sticky;position:sticky;text-align:center;top:-1px;\n  vertical-align:middle;will-change:transform}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}<\/style>\n<div class=\"tg-wrap\"><table class=\"tg\"><thead>\n  <tr>\n    <th class=\"tg-98u3\">2\u811aTrigger<\/th>\n    <th class=\"tg-98u3\">6\u811aThreshold<\/th>\n    <th class=\"tg-98u3\">3\u811aOutput<\/th>\n  <\/tr><\/thead>\n<tbody>\n  <tr>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u975e\u89e6\u53d1<\/td>\n    <td class=\"tg-cfzr\">\u4fdd\u6301\u4e0d\u53d8<\/td>\n  <\/tr>\n<\/tbody>\n<\/table><\/div>\n\n\n\n<p>\u7531\u4e0a\u53ef\u77e5\uff0c\u6309\u952e\u4e3a\u6309\u4e0b\u65f6\uff0c555\u4f1a\u8f93\u51fa\u4f4e\u7535\u5e73\uff1b\u5f53\u6309\u952e\u6309\u4e0b\u65f6\uff0c555\u4f1a\u5148\u8f93\u51fa\u9ad8\u7535\u5e73\uff0c\u8fc7\u4e00\u6bb5\u65f6\u95f4\u540e\u53c8\u4f1a\u56de\u5230\u4f4e\u7535\u5e73\u3002\u8fd9\u4e2a<strong>\u8f93\u51fa\u9ad8\u7535\u5e73\u7684\u65f6\u95f4\u5c31\u662f\u7535\u5bb9C\u4ece0V\u5145\u7535\u81f3$\\frac{2}{3}V_{cc}$\u7684\u65f6\u95f4<\/strong>\u3002<br>\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a$$t=RC\u22c5ln(3)\u2248RC\u22c51.0986\u22481.1RC$$<\/p>\n\n\n\n<p>\u4e0a\u56fe\u4e2d\uff0c<br>$R=100K\u03a9=1\u00d710^5\u03a9$\uff1b<br>$C=10uF=1\u00d710^{-5}F$<br>\u6240\u4ee5\uff0c$t=1.1RC=1.1\u00d710^5\u00d710^{-5}=1.1S$<br>\u4e5f\u5c31\u662f\u8bf4\u5728\u4e0a\u56fe\u7535\u8def\u4e2d\uff0c\u5982\u679c\u6309\u4e0b\u6309\u952e555\u5c06\u4f1a\u8f93\u51fa1.1\u79d2\u7684\u9ad8\u7535\u5e73\uff0c\u968f\u540e\u6062\u590d\u81f3\u4f4e\u7535\u5e73\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u53cc\u7a33\u6001\u6a21\u5f0f<\/h2>\n\n\n\n<p>\u6682\u65f6\u6ca1\u6709\u7528\u5230\uff0c\u7528\u5230\u4e86\u518d\u8865\u5145\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u65e0\u7a33\u6001\u6a21\u5f0f<\/h2>\n\n\n\n<p>\u5728\u65e0\u7a33\u6001\u6a21\u5f0f\u4e0b\uff0cNE555\u4f1a\u4e0d\u65ad\u81ea\u52a8\u5730\u5728\u9ad8\u7535\u5e73\u548c\u4f4e\u7535\u5e73\u4e4b\u95f4\u5207\u6362\uff0c\u5f62\u6210\u4e00\u4e2a\u8fde\u7eed\u7684\u77e9\u5f62\u6ce2\u8f93\u51fa\uff08\u5373\u65b9\u6ce2\u632f\u8361\u5668\uff09\u3002\u5b83\u662f NE555 \u7684\u4e09\u79cd\u57fa\u672c\u5de5\u4f5c\u6a21\u5f0f\u4e4b\u4e00\uff0c\u5e38\u7528\u4e8e\u5b9e\u73b0\u5b9a\u65f6\u3001\u9891\u7387\u4fe1\u53f7\u53d1\u751f\u5668\u3001\u95ea\u70c1\u706f\u7535\u8def\u7b49\u529f\u80fd\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u56fa\u5b9a\u5360\u7a7a\u6bd4<\/h3>\n\n\n\n<p>\u4e0b\u56fe\u662fNE555\u8f93\u51fa\u56fa\u5b9a\u5360\u7a7a\u6bd4\u4fe1\u53f7\u7684\u7535\u8def\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img.alicdn.com\/imgextra\/i1\/3595990767\/O1CN01GkK1aC1HXKrSsIOQl_!!3595990767.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img.alicdn.com\/imgextra\/i1\/3595990767\/O1CN01GkK1aC1HXKrSsIOQl_!!3595990767.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:500px\"\/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u4e2a\u7535\u8def\u7684\u5de5\u4f5c\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7535\u5bb9C\u901a\u8fc7R1\u3001R2\u5145\u7535\u81f3$\\frac{1}{3}V_{cc}$\u540e\uff0c\u8fdb\u5165\u6b63\u5e38\u7684\u5de5\u4f5c\u6d41\u7a0b\u3002<\/li>\n\n\n\n<li>\u7531\u4e8eC\u8fde\u63a5\u5230\u4e862\u811aTrigger\uff0c2\u811a\u4f4e\u4e8e$\\frac{1}{3}V_{cc}$\u65f6\uff0c3\u811a\u7684\u8f93\u51fa\u4e3a\u9ad8\u7535\u5e73\uff0c\u800c7\u811a\u4e3a\u9ad8\u963b\u6001\uff0c\u6240\u4ee5C\u7ee7\u7eed\u901a\u8fc7R1\u3001R2\u5145\u7535\uff0c\u76f4\u5230C\u7684\u7535\u538b\u8fbe\u5230$\\frac{2}{3}V_{cc}$\u3002C\u4ece$\\frac{1}{3}V_{cc}$\u5145\u7535\u81f3$\\frac{2}{3}V_{cc}$\u7684\u65f6\u95f4\u5373\u4e3a\u5145\u7535\u65f6\u95f4\uff0c\u516c\u5f0f\u4e3a$$t_1 = 0.693 \u00b7 (R_1 + R_2) \u00b7 C$$<\/li>\n\n\n\n<li>C\u8fbe\u5230$\\frac{2}{3}V_{cc}$\u540e\uff0c\u8d85\u8fc7\u4e866\u811a\u7684\u9608\u503c\uff0c\u56e0\u6b643\u811a\u8f93\u51fa\u53d8\u6210\u4f4e\u7535\u5e73\uff0c7\u811a\u53d8\u6210\u4f4e\u7535\u5e73\u3002\u4e8e\u662fC\u65e0\u6cd5\u7ee7\u7eed\u5145\u7535\uff0c\u800c\u662f\u7ecf\u7531R2\u54117\u811a\u653e\u7535\uff0c\u76f4\u5230C\u7535\u538b\u8fbe\u5230$\\frac{1}{3}V_{cc}$\u4e3a\u6b62\u3002\u8fd9\u6bb5\u653e\u7535\u65f6\u95f4\u7684\u516c\u5f0f\u4e3a $$t_2 = 0.693 \u00b7 R_2 \u00b7 C$$<\/li>\n\n\n\n<li>C\u7535\u538b\u4f4e\u4e8e$\\frac{1}{3}V_{cc}$\u540e\uff0c\u89e6\u53d12\u811aTrigger\uff0c\u4ece\u800c3\u811a\u8f93\u51fa\u53d8\u6210\u9ad8\u7535\u5e73\uff0c7\u811a\u53d8\u6210\u9ad8\u963b\u6001\uff0c\u8fd4\u56de\u4e0a\u8ff0\u7b2c2\u6b65\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5468\u671f\uff1a$T =t_1+t_2= 0.693 \u00b7(R_1 + 2R_2)C$<br>\u9891\u7387\uff1a$f=\\frac{1}{T}=\\frac{1.44}{(R_1+2R_2)C}$<br>\u5360\u7a7a\u6bd4\uff1a$D=\\frac{t_1}{T}=\\frac{R_1+R_2}{R_1+2R_2}$<br>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u4e2a\u7535\u8def\u56fe\u8f93\u51fa\u7684\u5360\u7a7a\u6bd4\u65e0\u6cd5\u5c0f\u4e8e 50%\uff0c\u7531\u4e0a\u8ff0\u516c\u5f0f\u4e5f\u53ef\u770b\u51faD\u7684\u53d6\u503c\u8303\u56f4\u662f0.5-1<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4efb\u610f\u5360\u7a7a\u6bd4<\/h3>\n\n\n\n<p>\u57fa\u672c\u7684\u65e0\u7a33\u6001\u7535\u8def\u65e0\u6cd5\u4ea7\u751f\u5360\u7a7a\u6bd4\u5c0f\u4e8e50%\u7684\u65b9\u6ce2\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u589e\u52a0\u4e24\u4e2a\u4e8c\u6781\u7ba1\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u5982\u4e0b\u6240\u793a\u7684\u6539\u8fdb\u7248\u53ef\u4ee5\u5b9e\u73b0\u4efb\u610f\u5360\u7a7a\u6bd4\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img.alicdn.com\/imgextra\/i2\/3595990767\/O1CN011epEIy1HXKrSsIOQp_!!3595990767.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img.alicdn.com\/imgextra\/i2\/3595990767\/O1CN011epEIy1HXKrSsIOQp_!!3595990767.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:500px\"\/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u4e2a\u7535\u8def\u4e2d\u5145\u7535\u8def\u5f84\u548c\u653e\u7535\u8def\u5f84\u88ab\u5206\u79bb\u5f00\u6765\uff0c\u5728\u5145\u7535\u9636\u6bb5\uff0cD1\u5bfc\u901a\uff0cD2\u622a\u6b62\uff0c\u56e0\u6b64C\u4ec5\u901a\u8fc7R1\u8fdb\u884c\u5145\u7535\uff1b\u800c\u5728\u653e\u7535\u9636\u6bb5\uff0cD1\u622a\u6b62\uff0cD2\u5bfc\u901a\uff0c\u56e0\u6b64C1\u4ec5\u901a\u8fc7R2\u653e\u7535\u3002<br>\u5145\u7535\u65f6\u95f4\uff1a$t_1=0.693 \u00b7 R_1\u00b7C$<br>\u653e\u7535\u65f6\u95f4\uff1a$t_2=0.693 \u00b7 R_2\u00b7C$<br>\u5468\u671f\uff1a$T =t_1+t_2= 0.693 \u00b7(R_1 + R_2)C$<br>\u9891\u7387\uff1a$f=\\frac{1}{T}=\\frac{1.44}{(R_1+R_2)C}$<br>\u5360\u7a7a\u6bd4\uff1a$D=\\frac{t_1}{T}=\\frac{R_1}{R_1+R_2}$<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"KeTiaoZhanKongBi\">\u53ef\u8c03\u5360\u7a7a\u6bd4<\/h3>\n\n\n\n<p>\u5bf9\u4efb\u610f\u5360\u7a7a\u6bd4\u7535\u8def\u8fdb\u884c\u5fae\u8c03\u5373\u53ef\u5f97\u5230\u53ef\u8c03\u5360\u7a7a\u6bd4\u7535\u8def<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/img.alicdn.com\/imgextra\/i2\/3595990767\/O1CN01EeOpHs1HXKrTXlNYV_!!3595990767.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/img.alicdn.com\/imgextra\/i2\/3595990767\/O1CN01EeOpHs1HXKrTXlNYV_!!3595990767.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" style=\"width:500px\"\/><\/div><\/figure>\n\n\n\n<p>\u4ec5\u4ec5\u6dfb\u52a0\u4e86\u4e00\u4e2a\u53d8\u963b\u5668\uff0c\u901a\u8fc7\u8c03\u8282\u8fd9\u4e2a\u53d8\u963b\u5668\u7684\u963b\u503c\u5373\u53ef\u8c03\u6574\u5360\u7a7a\u6bd4\uff0c\u8bb0\u53d8\u963b\u5668R\u4e0a\u534a\u90e8\u5206\u7535\u963b\u4e3a$R_\u5145$\uff0c\u4e0b\u534a\u90e8\u5206\u7535\u963b\u4e3a$R_\u653e$\uff0c\u5219$R=R_\u5145+R_\u653e$<\/p>\n\n\n\n<p>\u5145\u7535\u65f6\u95f4\uff1a$t_1=0.693 \u00b7 (R_1 + R_\u5145)\u00b7C$<br>\u653e\u7535\u65f6\u95f4\uff1a$t_2=0.693 \u00b7 (R_2 + R_\u653e)\u00b7C$<br>\u5468\u671f\uff1a$T =t_1+t_2= 0.693 \u00b7(R_1 + R_2+R)\u00b7C$<br>\u9891\u7387\uff1a$f=\\frac{1}{T}=\\frac{1.44}{(R_1+R_2+R)C}$<br>\u5360\u7a7a\u6bd4\uff1a$D=\\frac{t_1}{T}=\\frac{R_1+R_\u5145}{R_1+R_2+R}$<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><em>\u53c2\u8003\u94fe\u63a5\uff1a<\/em><\/p>\n\n\n\n<!-- B\u7ad9\u89c6\u9891\u94fe\u63a5 -->\n<a href=\"https:\/\/www.bilibili.com\/video\/BV1oT42167y3\/?share_source=copy_web&#038;vd_source=da22a4f8c5a8b308ea057f25e095f5fd\" target=\"_blank\">\n    <em>B\u7ad9\u89c6\u9891<\/em>\n<\/a>\n<br>\n<!-- \u77e5\u4e4e\u94fe\u63a5 -->\n<a href=\"https:\/\/www.zhihu.com\/question\/326264093\/answer\/2167941453\" target=\"_blank\">\n    <em>555\u5b9a\u65f6\u5668\u600e\u4e48\u641e\u6e05\u695a\uff1f &#8211; \u77e5\u4e4e<\/em>\n<\/a>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>NE555 \u662f\u4e00\u79cd\u7ecf\u5178\u5b9a\u65f6\u5668\u96c6\u6210\u7535\u8def\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5ef6\u65f6\u3001\u7535\u5e73\u8f6c\u6362\u3001\u8109\u51b2\u751f\u6210\u3001\u632f\u8361\u5668\u3001PWM\u3001\u5b9a\u65f6\u63a7\u5236\u7b49\u7535\u8def\u4e2d\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,7],"tags":[],"class_list":["post-87","post","type-post","status-publish","format-standard","hentry","category-xinpianshiyong","category-biji"],"_links":{"self":[{"href":"https:\/\/www.shadabuliu.top\/index.php\/wp-json\/wp\/v2\/posts\/87","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shadabuliu.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shadabuliu.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shadabuliu.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shadabuliu.top\/index.php\/wp-json\/wp\/v2\/comments?post=87"}],"version-history":[{"count":62,"href":"https:\/\/www.shadabuliu.top\/index.php\/wp-json\/wp\/v2\/posts\/87\/revisions"}],"predecessor-version":[{"id":224,"href":"https:\/\/www.shadabuliu.top\/index.php\/wp-json\/wp\/v2\/posts\/87\/revisions\/224"}],"wp:attachment":[{"href":"https:\/\/www.shadabuliu.top\/index.php\/wp-json\/wp\/v2\/media?parent=87"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shadabuliu.top\/index.php\/wp-json\/wp\/v2\/categories?post=87"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shadabuliu.top\/index.php\/wp-json\/wp\/v2\/tags?post=87"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}