{"id":711,"date":"2026-10-04T21:46:29","date_gmt":"2026-10-04T13:46:29","guid":{"rendered":"https:\/\/jncircuit.com\/?p=711"},"modified":"2026-10-04T21:46:29","modified_gmt":"2026-10-04T13:46:29","slug":"operational-amplifier","status":"publish","type":"post","link":"https:\/\/jncircuit.com\/index.php\/2026\/10\/04\/operational-amplifier","title":{"rendered":"\u7535\u5b50\u6280\u672f\u7684\u91cc\u7a0b\u7891\uff0c\u5e26\u4f60\u8d70\u8fdb\u8fd0\u7b97\u653e\u5927\u5668\u7684\u5947\u5999\u4e16\u754c"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u8fd0\u7b97\u653e\u5927\u5668\uff08\u7b80\u79f0\u8fd0\u653e\uff09\u7684\u53d1\u660e\u4f7f\u5f97\u7535\u5b50\u6280\u672f\u8fdb\u5165\u4e86\u201c\u8fd0\u7b97\u201d\u65f6\u4ee3\uff0c\u76f4\u63a5\u4fc3\u4f7f\u4e86\u7535\u5b50\u8ba1\u7b97\u673a\u7684\u8bde\u751f\uff0c\u5b83\u4e5f\u56e0\u6b64\u800c\u5f97\u540d\u201c\u8fd0\u7b97\u653e\u5927\u5668\u201d\u3002\u6211\u4eec\u5148\u6765\u770b\u770b\u5e38\u89c1\u7684\u8fd0\u653e\u201c\u6838\u5fc3\u201d\u662f\u600e\u4e48\u6837\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"607\" src=\"https:\/\/img.jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-cda351f52ed1649943e154692b0a3c30_720w.jpg\" alt=\"\" class=\"wp-image-712\" style=\"aspect-ratio:1.186375321336761;width:923px;height:auto\" srcset=\"https:\/\/jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-cda351f52ed1649943e154692b0a3c30_720w.jpg 720w, 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class=\"wp-block-paragraph\"><strong>\u5728\u95ed\u73af\u7684\u7ed3\u6784\u5f53\u4e2d\uff0c\u8fd0\u653e\u5185\u90e8\u7684\u955c\u50cf\u7535\u8def\u603b\u662f\u4f01\u56fe\u7ef4\u6301\u4e24\u7aef\u7535\u6d41\u7684\u5e73\u8861\uff0c\u4e00\u65e6\u5931\u8861\uff0c\u5b83\u5c31\u4f1a\u901a\u8fc7\u8c03\u8282\u8f93\u51fa\u7aef\uff08output\uff09\u7684\u7535\u6d41\u5f62\u6001\uff0c\u8fdb\u4e00\u6b65\u901a\u8fc7\u53cd\u9988\u73af\u8def\u6765\u68c0\u6d4b\u8f93\u5165\uff08input\uff09\u4e24\u7aef\u7684\u72b6\u6001\uff0c\u76f4\u5230\u51fa\u73b0\u65b0\u7684\u5e73\u8861\uff0c\u6b64\u65f6\u7684\u8fd0\u653e\u5c31\u5f97\u5230\u4e00\u4e2a\u7a33\u5b9a\u7684\u8f93\u51fa\u72b6\u6001<\/strong>\u3002\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u8fd9\u4e2a\u539f\u7406\u6765\u5206\u6790\u8fd0\u653e\u7684\u7ecf\u5178\u5e94\u7528\u7535\u8def\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u7f13\u51b2\u5668\u7684\u914d\u7f6e<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"457\" src=\"https:\/\/img.jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-2163ba455d3c2292e033f9b151915ab7_720w.jpg\" alt=\"\" class=\"wp-image-713\" style=\"aspect-ratio:1.5745967741935485;width:781px;height:auto\" srcset=\"https:\/\/jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-2163ba455d3c2292e033f9b151915ab7_720w.jpg 720w, https:\/\/jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-2163ba455d3c2292e033f9b151915ab7_720w-300x190.jpg 300w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f\u4e00\u4e2a\u7ecf\u5178\u7684\u7f13\u51b2\u5668\u65b9\u6848\uff0c\u4e5f\u53ef\u4ee5\u79f0\u4f5c\u7535\u538b\u8ddf\u968f\u5668\uff08\u8f93\u51fa\u7535\u6d41\u7684\u80fd\u529b\u4e0e\u8fd0\u653e\u5185\u90e8\u7684\u8f93\u51fa\u7ed3\u6784\u6709\u5173\uff09\u3002\u6211\u4eec\u6839\u636e\u4e0a\u8ff0\u7684\u955c\u50cf\u539f\u7406\uff0c<strong>\u8fd0\u653e\u8f93\u5165\u4e24\u7aef\u7684\u7535\u538b\u53ef\u4ee5\u770b\u6210\u662f\u76f8\u7b49\u7684\uff08\u4e25\u683c\u6765\u8bf4\u662f\u52a8\u6001\u5e73\u8861\uff09<\/strong>\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u5f97\u51faVin=Vout\u7684\u7ed3\u8bba\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u540c\u76f8\u4e0e\u53cd\u76f8<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"279\" src=\"https:\/\/img.jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-79b6e36ae6a3559a3bab55580e0ca089_720w.jpg\" alt=\"\" class=\"wp-image-714\" style=\"aspect-ratio:2.5848101265822785;width:1021px;height:auto\" srcset=\"https:\/\/jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-79b6e36ae6a3559a3bab55580e0ca089_720w.jpg 720w, https:\/\/jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-79b6e36ae6a3559a3bab55580e0ca089_720w-300x116.jpg 300w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u6765\u770b\u540c\u76f8\u7684\u914d\u7f6e\uff0c\u7531\u4e8e\u5728\u53cd\u9988\u73af\u8def\u4e2d\u589e\u52a0\u4e86\u7535\u963b\u5206\u538b\u5668\uff0c\u53ef\u4ee5\u7cbe\u51c6\u5730\u63a7\u5236\u8fd4\u56de\u5230\u8f93\u5165\u7aef\u7684\u7535\u538b\u503c\u3002\u56e0\u6b64\u53ef\u4ee5\u5f97\u51fa\u589e\u76ca\u7684\u8ba1\u7b97\u516c\u5f0fG=Rf\/R1+1\uff1b\u540c\u7406\u53ef\u4ee5\u5f97\u51fa\u53cd\u76f8\u914d\u7f6e\u7684\u589e\u76caG=-Rf\/R1\u3002<strong>\u8fd9\u91cc\u7684\u201c\u540c\u76f8\u201d\u6307\u7684\u662f\u4fe1\u53f7\u6e90\u63a5\u8fd0\u653e\u7684\u6b63\u7aef\uff0c\u4e0e\u8f93\u51fa\u4fe1\u53f7\u7684\u76f8\u4f4d\u76f8\u540c\uff1b\u201c\u53cd\u76f8\u201d\u662f\u6307\u4fe1\u53f7\u6e90\u63a5\u8fd0\u653e\u7684\u8d1f\u7aef\uff0c\u4e0e\u8f93\u51fa\u4fe1\u53f7\u7684\u76f8\u4f4d\u76f8\u53cd<\/strong>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u52a0\u6cd5\u5668\u914d\u7f6e<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"265\" src=\"https:\/\/img.jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-6f179fdc30c96a6161607ac175308fc0_720w.jpg\" alt=\"\" class=\"wp-image-715\" style=\"aspect-ratio:2.71313672922252;width:1012px;height:auto\" srcset=\"https:\/\/jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-6f179fdc30c96a6161607ac175308fc0_720w.jpg 720w, https:\/\/jncircuit.com\/wp-content\/uploads\/2026\/10\/v2-6f179fdc30c96a6161607ac175308fc0_720w-300x110.jpg 300w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u660e\u767d\u4e86\u5355\u8def\u540c\u76f8\u4e0e\u53cd\u76f8\u7684\u914d\u7f6e\u539f\u7406\uff0c\u5bf9\u4e8e\u591a\u8def\u7684\u4fe1\u53f7\u8f93\u5165\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u6309\u7167\u52a0\u6cd5\u6765\u8ba1\u7b97\uff0c\u201c\u52a0\u6cd5\u5668\u201d\u7684\u79f0\u8c13\u7531\u6b64\u800c\u6765\u3002\u5148\u770b\u53cd\u76f8\u52a0\u6cd5\u7684\u914d\u7f6e\uff0c\u628a\u591a\u8def\u4fe1\u53f7\u53e0\u52a0\u8d77\u6765\u5c31\u53d8\u6210\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Vout=-Rf(V1\/R1+V2\/R2+&#8230;+Vn\/Rn)<\/strong>\uff1b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u65f6\u5982\u679cR1=R2=&#8230;=Rn\uff0c\u5219\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Vout=-Rf(V1+V2+&#8230;+Vn)\/R1<\/strong>\uff1b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u518d\u6765\u770b\u540c\u76f8\u52a0\u6cd5\u914d\u7f6e\uff0c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbeR1=R2=&#8230;=Rn\uff0c\u540c\u7406\u53ef\u5f97\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Vout=(Rf\/Rin+1)(V1\/N+V2\/N+&#8230;+Vn\/N)<\/strong>\uff0c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5176\u4e2dN=\u8f93\u5165\u7535\u963b\u5668\u7684\u6570\u91cf\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0a\u5c31\u662f\u901a\u8fc7\u8fd0\u7b97\u653e\u5927\u5668\u7684\u57fa\u672c\u539f\u7406\u884d\u751f\u51fa\u7684\u5e94\u7528\uff0c\u65e0\u8bba\u662f\u591a\u590d\u6742\u7684\u7535\u8def\uff0c\u90fd\u79bb\u4e0d\u5f00\u8fd9\u4e9b\u57fa\u672c\u89c4\u5219\uff0c\u7b80\u5355\u8bf4\u5c31\u662f\u53cd\u9988\u5f62\u5f0f\u7684\u53d8\u79cd\uff0c\u7531\u6b64\u8d4b\u4e88\u4e86\u8fd0\u653e\u5177\u5907\u591a\u79cd\u5f62\u5f0f\u7684\u201c\u8fd0\u7b97\u201d\u529f\u80fd\u3002<strong>\u4e0b\u4e00\u7bc7\u6211\u8ba1\u5212\u628a\u4eca\u5929\u7684\u5185\u5bb9\u5c55\u5f00\uff0c\u8be6\u7ec6\u5206\u6790\u5f15\u5165\u4e86\u6ee4\u6ce2\u5668\u7684\u8fd0\u653e\u8ba1\u7b97\u4e0e\u566a\u58f0\u95ee\u9898\uff0c\u6b22\u8fce\u5404\u4f4d\u7ee7\u7eed\u5173\u6ce8<\/strong>\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd0\u7b97\u653e\u5927\u5668\uff08\u7b80\u79f0\u8fd0\u653e\uff09\u7684\u53d1\u660e\u4f7f\u5f97\u7535\u5b50\u6280\u672f\u8fdb\u5165\u4e86\u201c\u8fd0\u7b97\u201d\u65f6\u4ee3\uff0c\u76f4\u63a5\u4fc3\u4f7f\u4e86\u7535\u5b50\u8ba1\u7b97\u673a\u7684\u8bde\u751f\uff0c\u5b83\u4e5f\u56e0\u6b64\u800c\u5f97\u540d\u201c\u8fd0\u7b97\u653e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":713,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47,51],"tags":[54,53,52],"class_list":["post-711","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-circuit-analysis","category-operational-amplifier","tag-inverting-amplifier","tag-non-inverting-amplifier","tag-opamp"],"_links":{"self":[{"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/posts\/711","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/comments?post=711"}],"version-history":[{"count":1,"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/posts\/711\/revisions"}],"predecessor-version":[{"id":716,"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/posts\/711\/revisions\/716"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/media\/713"}],"wp:attachment":[{"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/media?parent=711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/categories?post=711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jncircuit.com\/index.php\/wp-json\/wp\/v2\/tags?post=711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}