{"id":6164,"date":"2025-09-03T15:34:13","date_gmt":"2025-09-03T10:04:13","guid":{"rendered":"https:\/\/study.madeeasy.in\/?p=6164"},"modified":"2025-09-03T15:41:07","modified_gmt":"2025-09-03T10:11:07","slug":"basic-feedback-concept","status":"publish","type":"post","link":"https:\/\/www.madeeasy.in\/study\/ee\/rectifiers\/basic-feedback-concept","title":{"rendered":"Basic Feedback Concept"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6165 size-full\" src=\"https:\/\/study.madeeasy.in\/wp-content\/uploads\/2025\/09\/feedback.jpg\" alt=\"Feedback\" width=\"302\" height=\"116\" srcset=\"https:\/\/www.madeeasy.in\/study\/wp-content\/uploads\/2025\/09\/feedback.jpg 302w, https:\/\/www.madeeasy.in\/study\/wp-content\/uploads\/2025\/09\/feedback-300x115.jpg 300w\" sizes=\"auto, (max-width: 302px) 100vw, 302px\" \/><\/p>\n<p>where, A\u2192Open loop gain; \u03b2 \u2192 \u03b2\u2192Feedback factor<\/p>\n<p>Si \u2192 Input signal; Se \u2192 Error signal<\/p>\n<p>Sf\u2192Feedback signal<\/p>\n<p><strong> Gain with feedback<\/strong><\/p>\n<p>Af = A\/1+A\u03b2 for &#8211; ve feedback ; Af = A\/1-A\u03b2 for + ve feedback<\/p>\n<p><strong> Loop gain or return ratio<\/strong><\/p>\n<p>Loop gain = \u2212A\u03b2<\/p>\n<p><strong> Return difference<\/strong><\/p>\n<p>\u2022 The difference between unity and loop gain is called return difference (D).<\/p>\n<p style=\"text-align: center;\">D = (1+A\u03b2)<\/p>\n<p>\u2022 D is also called desensitivity.<\/p>\n<p><strong>Sensitivity<\/strong><\/p>\n<p>In case of negative feedback, if<\/p>\n<p>dA\/A \u2192 % change without feedback.<\/p>\n<p>dAf \/Af \u2192 % change with feedback.<\/p>\n<p>dAf \/Af = dA\/A \/(1+A\u03b2), i.e., reduction in sensitivity of amplifier.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>where, A\u2192Open loop gain; \u03b2 \u2192 \u03b2\u2192Feedback factor Si \u2192 Input signal; Se \u2192 Error signal Sf\u2192Feedback signal Gain with<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1796,5],"tags":[1822,1821],"class_list":["post-6164","post","type-post","status-publish","format-standard","hentry","category-rectifiers","category-ee","tag-amplifiers","tag-feedback-concept"],"_links":{"self":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/6164","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/comments?post=6164"}],"version-history":[{"count":0,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/6164\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/media?parent=6164"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/categories?post=6164"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/tags?post=6164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}