{"id":131299,"date":"2024-12-23T08:59:18","date_gmt":"2024-12-23T00:59:18","guid":{"rendered":"https:\/\/ocw.nycu.edu.tw\/?post_type=course_page&#038;p=131299"},"modified":"2026-06-30T10:16:46","modified_gmt":"2026-06-30T02:16:46","slug":"el_1_121_231017-en","status":"publish","type":"course_page","link":"https:\/\/ocw.nycu.edu.tw\/?course_page=all-course-2\/college-of-science\/department-of-electrophysics\/electronics-i-academic-112-en\/el_1_121_231017-en","title":{"rendered":"1.9.1 A simple MOS amplifier  1.9.2 DC operating point  1.9.3 AC amplification"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"131299\" class=\"elementor elementor-131299\">\n\t\t\t\t\t\t\t\t\t<section class=\"penci-section penci-disSticky penci-structure-10 elementor-section elementor-top-section elementor-element elementor-element-16700d17 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"16700d17\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"penci-ercol-100 penci-ercol-order-1 penci-sticky-ct    elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1832f798\" data-id=\"1832f798\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"penci-section penci-disSticky penci-structure-20 elementor-section elementor-top-section elementor-element elementor-element-6ad968e6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6ad968e6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"penci-ercol-50 penci-ercol-order-1 penci-sticky-ct    elementor-column elementor-col-50 elementor-top-column elementor-element 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.elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">1.9.1 A simple MOS amplifier \n1.9.2 DC operating point \n1.9.3 AC amplification <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7aec5b11 elementor-widget elementor-widget-video\" data-id=\"7aec5b11\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/youtu.be\\\/p2MQPhFWGc0&quot;,&quot;modestbranding&quot;:&quot;yes&quot;,&quot;lazy_load&quot;:&quot;yes&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.13.3 - 28-05-2023 *\/\n.elementor-widget-video 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0l22.2 22.2c9.5 9.5 9.3 25-.4 34.3L136.6 216H424c13.3 0 24 10.7 24 24v32c0 13.3-10.7 24-24 24H136.6l120.5 114.8c9.8 9.3 10 24.8.4 34.3z\"><\/path><\/svg>Back to Course Homepage<\/span>\r\n\t\t\t\t\t\t\t\t\t<\/span>\r\n\t\t\t<\/a>\r\n\t\t<\/div>\r\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"penci-ercol-50 penci-ercol-order-2 penci-sticky-ct    elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-fc8fc3b\" data-id=\"fc8fc3b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-546b36ef elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"546b36ef\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.13.3 - 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.elementor-divider-separator{width:100%;min-height:var(--divider-pattern-height);-webkit-mask-size:var(--divider-pattern-size) 100%;mask-size:var(--divider-pattern-size) 100%;-webkit-mask-repeat:var(--divider-pattern-repeat);mask-repeat:var(--divider-pattern-repeat);background-color:var(--divider-color);-webkit-mask-image:var(--divider-pattern-url);mask-image:var(--divider-pattern-url)}.elementor-widget-divider--no-spacing{--divider-pattern-size:auto}.elementor-widget-divider--bg-round{--divider-pattern-repeat:round}.rtl .elementor-widget-divider .elementor-divider__text{direction:rtl}.e-con-inner>.elementor-widget-divider,.e-con>.elementor-widget-divider{width:var(--container-widget-width,100%);--flex-grow:var(--container-widget-flex-grow)}<\/style>\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da19150 elementor-widget elementor-widget-shortcode\" data-id=\"da19150\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-shortcode\">\n<table id=\"tablepress-596\" class=\"tablepress tablepress-id-596\">\n<thead>\n<tr class=\"row-1 odd\">\n\t<th class=\"column-1\">Week<\/th><th class=\"column-2\">Course Content<\/th><th class=\"column-3\">Course Video<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-hover\">\n<tr class=\"row-2 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">Chapter 1 Basic Ideas <br \/>\n1.1.1 Voltage  <br \/>\n1.1.2 Current <br \/>\n1.1.3 Resistance <br \/>\n1.1.4 Basic circuits<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131156\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-3 odd\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">1.2.1 Circuit analysis <br \/>\n1.2.2 Equivalent circuit <br \/>\n1.2.3 Source representation <\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131263\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-4 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">1.3.1 Capacitor <br \/>\n1.3.2 Capacitive microphone <\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131268\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-5 odd\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">1.4.1 DC voltage charging C <br \/>\n1.4.2 Transient and steady-state solutions <br \/>\n1.4.3 AC voltage charging C <\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131273\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-6 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">1.5.1 Basic C concepts <br \/>\n1.5.2 Blocking DC voltage   <br \/>\n1.5.2 Condition for ac voltage passing  <\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131278\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-7 odd\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">1.6.1 Equivalent model for C charging <\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131283\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-8 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">1.7.1 Phasor analysis <br \/>\n1.7.2 RC circuit <br \/>\n1.7.3 Bode plots<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131288\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-9 odd\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">1.8.1 Impedance C in the phasor analysis <br \/>\n1.8.2 DC and AC circuits <br \/>\n1.8.3 Amplifier concepts <\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131294\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-10 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">1.9.1 A simple MOS amplifier <br \/>\n1.9.2 DC operating point <br \/>\n1.9.3 AC amplification <\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131299\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-11 odd\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">Chapter 2 Operational Amplifiers <br \/>\n2.1.1 Ideal properties <br \/>\n2.1.2 Negative feedback <br \/>\n2.1.3 Virtual short circuit <br \/>\n2.1.4 Voltage follower <br \/>\n2.1.5 Positive-gain amplifier <br \/>\n2.1.6 Adder <br \/>\n2.1.7 Negative-gain amplifier<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131304\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-12 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.2.1 Differential amplifier <br \/>\n2.2.2 Instrumentation amplifier <br \/>\n2.2.3 EKG measurements <br \/>\n2.2.4 Right-leg drive circuit <br \/>\n2.2.5 Voltage and current limitations<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131309\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-13 odd\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.3.1 Integrator <br \/>\n2.3.2 Square to triangular waves converter <br \/>\n2.3.3 DC offset problem <br \/>\n2.3.4 Effect of offset on integrator<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131314\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-14 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.4.1 DC problem with the integrator <br \/>\n2.4.2 Integrator with additional resistance <br \/>\n2.4.3 Bode plots of integrator <br \/>\n2.4.4 Differentiator <br \/>\n2.4.5 Differentiator with additional resistance <br \/>\n2.4.6 Solving a differential equation<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131319\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-15 odd\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.5.1 P-N junction photodetector <br \/>\n2.5.2 P-N diodes <br \/>\n2.5.3 Equivalent model of p-n photodetector <\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131324\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-16 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.6.1 Current-voltage converter for photodetector <br \/>\n2.6.2 Automatic street-light control system <br \/>\n2.6.3 BJT current and voltage  <br \/>\n2.6.4 The protection diode <\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131329\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-17 odd\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.7.1 A photo sensor <br \/>\n2.7.2 Current-voltage converter <br \/>\n2.7.3 Light-emitting devices <\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131334\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-18 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.8.1 Amplifier ac modeling <br \/>\n2.8.2 Modeling for current-voltage converter <br \/>\n2.8.3 Modeling for voltage-current converter <br \/>\n2.8.4 Current-current amplifier<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131339\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-19 odd\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.9.1 Summary of OP converters<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131344\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-20 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.10.1 OP bandwidth and Slew rate (SR) <br \/>\n2.10.2 Avoid SR distortion<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131349\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-21 odd\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.11.1 BJT current amplification<br \/>\n2.11.2 OP with BJT to increase current-driving capability <br \/>\n2.11.3 Class AB output stage<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131354\">Watch Online<\/a><\/td>\n<\/tr>\n<tr class=\"row-22 even\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\">2.12.1 Class AB output stage with diodes <br \/>\n2.12.2 A simple stereo system<\/td><td class=\"column-3\"><a href=\"\/?post_type=course_page&amp;p=131359\">Watch Online<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"penci-ercol-50 penci-ercol-order-3 penci-sticky-ct    elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-5f099062\" data-id=\"5f099062\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-37c1030 elementor-widget-divider--view-line_text elementor-hidden-mobile elementor-widget-divider--element-align-center elementor-widget elementor-widget-divider\" data-id=\"37c1030\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div 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class=\"elementor-item\" tabindex=\"-1\">College of Biomedical Science and Engineering<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-course_page ajax-mega-menu menu-item-132738\"><a href=\"https:\/\/ocw.nycu.edu.tw\/?course_page=all-course-2\/college-of-life-sciences-en\" class=\"elementor-item\" tabindex=\"-1\">College of Life Sciences<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-course_page ajax-mega-menu menu-item-141797\"><a href=\"https:\/\/ocw.nycu.edu.tw\/?course_page=all-course-2\/colege-of-medicine-en\" class=\"elementor-item\" tabindex=\"-1\">College of Medicine<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-course_page ajax-mega-menu menu-item-118072\"><a href=\"https:\/\/ocw.nycu.edu.tw\/?course_page=all-course-2\/course-of-chinese-center\" class=\"elementor-item\" tabindex=\"-1\">Course of Chinese Center<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-course_page ajax-mega-menu menu-item-120431\"><a href=\"https:\/\/ocw.nycu.edu.tw\/?course_page=all-course-2\/liberal-arts-college\" class=\"elementor-item\" tabindex=\"-1\">Forum Of Liberal Arts<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-course_page ajax-mega-menu menu-item-123746\"><a href=\"https:\/\/ocw.nycu.edu.tw\/?course_page=all-course-2\/speech-of-general-education-center\" class=\"elementor-item\" tabindex=\"-1\">Contemporary Civilization<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-course_page ajax-mega-menu menu-item-128240\"><a href=\"https:\/\/ocw.nycu.edu.tw\/?course_page=all-course-2\/reading-of-classic-masterpiece\" class=\"elementor-item\" tabindex=\"-1\">Reading of Classic Masterpiece<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-course_page ajax-mega-menu menu-item-123745\"><a 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