{"id":4084,"date":"2023-06-21T11:36:05","date_gmt":"2023-06-21T03:36:05","guid":{"rendered":"\/\/www.viralrail.com\/?p=4084"},"modified":"2023-06-21T11:36:08","modified_gmt":"2023-06-21T03:36:08","slug":"zydjsgs","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/4084.html","title":{"rendered":"\u589e\u76cadb\u8ba1\u7b97\u516c\u5f0f\uff1f"},"content":{"rendered":"\n

\u3000\u3000\u5728\u7535\u5b50\u7535\u8def\u4e2d\uff0c\u589e\u76ca\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u63cf\u8ff0\u4e86\u7535\u8def\u8f93\u5165\u4fe1\u53f7\u4e0e\u8f93\u51fa\u4fe1\u53f7\u4e4b\u95f4\u7684\u6bd4\u4f8b\u5173\u7cfb\u3002\u589e\u76cadb\u662f\u8861\u91cf\u589e\u76ca\u7684\u4e00\u79cd\u5e38\u89c1\u7684\u5355\u4f4d\uff0c\u672c\u6587\u5c06\u4ecb\u7ecd\u589e\u76cadb\u8ba1\u7b97\u516c\u5f0f\u53ca\u5176\u5e94\u7528\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001\u4ec0\u4e48\u662f\u589e\u76cadb?<\/h2>\n\n\n\n

\u3000\u3000\u589e\u76ca\u662f\u6307\u7535\u8def\u8f93\u51fa\u4fe1\u53f7\u4e0e\u8f93\u5165\u4fe1\u53f7\u4e4b\u95f4\u7684\u6bd4\u4f8b\u5173\u7cfb\u3002\u901a\u5e38\u7528Vout \/ Vin\u8868\u793a\uff0c\u5176\u4e2dVout\u662f\u8f93\u51fa\u7535\u538b\uff0cVin\u662f\u8f93\u5165\u7535\u538b\u3002\u589e\u76ca\u7684\u5355\u4f4d\u53ef\u4ee5\u662f\u7535\u538b\u589e\u76ca(V\/V)\u3001\u7535\u6d41\u589e\u76ca(A\/A)\u6216\u529f\u7387\u589e\u76ca(W\/W)\u3002\u4e3a\u4e86\u65b9\u4fbf\u6bd4\u8f83\uff0c\u901a\u5e38\u5c06\u589e\u76ca\u8f6c\u6362\u4e3a\u5206\u8d1d(db)\u5355\u4f4d\u3002\u589e\u76cadb\u662f\u7528dB\u8868\u793a\u7684\uff0c\u5176\u8ba1\u7b97\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n

\u3000\u3000Gain(dB) = 20 log (Vout \/ Vin)<\/strong><\/p>\n\n\n\n

\u3000\u3000\u5176\u4e2d\uff0clog\u8868\u793a\u4ee510\u4e3a\u5e95\u7684\u5bf9\u6570\u8fd0\u7b97\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e8c\u3001\u589e\u76cadb\u7684\u5e94\u7528<\/h2>\n\n\n\n

\u3000\u3000\u5728\u7535\u5b50\u7535\u8def\u8bbe\u8ba1\u4e2d\uff0c\u589e\u76cadb\u5e38\u7528\u4e8e\u8861\u91cf\u653e\u5927\u5668\u7684\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u5f53\u8bbe\u8ba1\u4e00\u4e2a\u653e\u5927\u5668\u65f6\uff0c\u9700\u8981\u786e\u5b9a\u5176\u589e\u76ca\u503c\uff0c\u4ee5\u786e\u4fdd\u8f93\u51fa\u4fe1\u53f7\u7684\u5e45\u5ea6\u8db3\u591f\u5927\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u589e\u76cadb\u4e5f\u5e38\u7528\u4e8e\u8861\u91cf\u5929\u7ebf\u7684\u6027\u80fd\u3002\u5929\u7ebf\u589e\u76ca\u901a\u5e38\u7528dBi\u8868\u793a\uff0c\u5b83\u662f\u4e00\u79cd\u76f8\u5bf9\u4e8e\u7406\u60f3\u70b9\u6e90\u5929\u7ebf\u7684\u589e\u76ca\u503c\uff0c\u5176\u4e2di\u8868\u793a\u76f8\u5bf9\u4e8e\u4e00\u4e2a\u7406\u60f3\u70b9\u6e90\u5929\u7ebf\u7684\u589e\u76ca\u503c\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e09\u3001\u589e\u76cadb\u8ba1\u7b97\u5b9e\u4f8b<\/h2>\n\n\n\n

\u3000\u3000\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3\u589e\u76cadb\u7684\u8ba1\u7b97\u65b9\u6cd5\uff0c\u4e0b\u9762\u7ed9\u51fa\u4e00\u4e2a\u5b9e\u4f8b\u3002\u5047\u8bbe\u6709\u4e00\u4e2a\u653e\u5927\u5668\uff0c\u5176\u8f93\u5165\u7535\u538b\u4e3a1V\uff0c\u8f93\u51fa\u7535\u538b\u4e3a10V\uff0c\u5219\u8be5\u653e\u5927\u5668\u7684\u7535\u538b\u589e\u76ca\u4e3a\uff1a<\/p>\n\n\n\n

\u3000\u3000Gain(V\/V) = 10 \/ 1 = 10<\/strong><\/p>\n\n\n\n

\u3000\u3000\u5c06\u5176\u8f6c\u6362\u4e3a\u589e\u76cadb\uff0c\u5219\u6709\uff1a<\/p>\n\n\n\n

\u3000\u3000Gain(dB) = 20 log (10) = 20 \u00d7 1 = 20dB<\/strong><\/p>\n\n\n\n

\u3000\u3000\u56e0\u6b64\uff0c\u8be5\u653e\u5927\u5668\u7684\u589e\u76ca\u4e3a20dB\u3002\u540c\u6837\u5730\uff0c\u5982\u679c\u6211\u4eec\u77e5\u9053\u4e00\u4e2a\u653e\u5927\u5668\u7684\u589e\u76cadb\u503c\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u589e\u76cadb\u8ba1\u7b97\u516c\u5f0f\u8ba1\u7b97\u51fa\u5176\u7535\u538b\u589e\u76ca\u3002<\/p>\n\n\n\n

\u3000\u3000\u56db\u3001\u7ed3\u8bba<\/h2>\n\n\n\n

\u3000\u3000\u589e\u76cadb\u662f\u8861\u91cf\u7535\u8def\u589e\u76ca\u7684\u4e00\u79cd\u5e38\u7528\u5355\u4f4d\uff0c\u5b83\u53ef\u4ee5\u65b9\u4fbf\u5730\u6bd4\u8f83\u4e0d\u540c\u7535\u8def\u7684\u6027\u80fd\u3002\u5728\u7535\u5b50\u7535\u8def\u8bbe\u8ba1\u548c\u5929\u7ebf\u8bbe\u8ba1\u4e2d\uff0c\u589e\u76cadb\u4e5f\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\u3002\u901a\u8fc7\u589e\u76cadb\u8ba1\u7b97\u516c\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u5feb\u901f\u51c6\u786e\u5730\u8ba1\u7b97\u51fa\u7535\u8def\u7684\u589e\u76ca\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728\u7535\u5b50\u7535\u8def\u4e2d\uff0c\u589e\u76ca\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u63cf\u8ff0\u4e86\u7535\u8def\u8f93\u5165\u4fe1\u53f7\u4e0e\u8f93\u51fa\u4fe1\u53f7\u4e4b\u95f4\u7684\u6bd4\u4f8b\u5173\u7cfb\u3002\u589e\u76cadb\u662f\u8861\u91cf\u589e\u76ca\u7684\u4e00\u79cd\u5e38\u89c1\u7684\u5355\u4f4d\uff0c\u672c\u6587\u5c06\u4ecb\u7ecd\u589e\u76cadb\u8ba1\u7b97\u516c\u5f0f\u53ca\u5176\u5e94\u7528\u3002<\/p>\n","protected":false},"author":1,"featured_media":3671,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[52],"class_list":["post-4084","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-wxtx"],"_links":{"self":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/4084"}],"collection":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/comments?post=4084"}],"version-history":[{"count":0,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/4084\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media\/3671"}],"wp:attachment":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media?parent=4084"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/categories?post=4084"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/tags?post=4084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}