{"id":2366,"date":"2018-07-11T08:12:37","date_gmt":"2018-07-11T08:12:37","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=2366"},"modified":"2025-03-17T15:21:04","modified_gmt":"2025-03-17T08:21:04","slug":"cach-lap-rap-transistor-va-do-loi-dong-dien","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=2366","title":{"rendered":"C\u00e1ch l\u1eafp r\u00e1p Transistor v\u00e0 \u0111\u1ed9 l\u1ee3i d\u00f2ng \u0111i\u1ec7n"},"content":{"rendered":"<figure id=\"attachment_12330\" aria-describedby=\"caption-attachment-12330\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-12330 size-full\" title=\"C\u00e1ch l\u1eafp r\u00e1p Transistor v\u00e0 \u0111\u1ed9 l\u1ee3i d\u00f2ng \u0111i\u1ec7n\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien.jpg\" alt=\"C\u00e1ch l\u1eafp r\u00e1p Transistor v\u00e0 \u0111\u1ed9 l\u1ee3i d\u00f2ng \u0111i\u1ec7n\" width=\"750\" height=\"400\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-510x272.jpg 510w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-300x160.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-600x320.jpg 600w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-12330\" class=\"wp-caption-text\">C\u00e1ch l\u1eafp r\u00e1p Transistor v\u00e0 \u0111\u1ed9 l\u1ee3i d\u00f2ng \u0111i\u1ec7n<\/figcaption><\/figure>\n<p id=\"id3691609\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">Khi s\u1eed d\u1ee5ng, transistor \u0111\u01b0\u1ee3c r\u00e1p theo m\u1ed9t trong 3 c\u00e1ch c\u0103n b\u1ea3n sau:<\/span><\/p>\n<ul class=\"list\" style=\"text-align: justify;\" data-id=\"id5294339\" data-list-type=\"bulleted\">\n<li class=\"item\"><span style=\"font-size: 17px;\">R\u00e1p theo ki\u1ec3u c\u1ef1c n\u1ec1n chung (1).\u00a0<\/span><\/li>\n<li class=\"item\"><span style=\"font-size: 17px;\">R\u00e1p theo ki\u1ec3u c\u1ef1c ph\u00e1t chung (2).\u00a0<\/span><\/li>\n<li class=\"item\"><span style=\"font-size: 17px;\">R\u00e1p theo ki\u1ec3u c\u1ef1c thu chung (3)<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_45564\" aria-describedby=\"caption-attachment-45564\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-45564 size-full\" title=\"C\u00e1ch l\u1eafp r\u00e1p Transistor\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-1.jpg\" alt=\"C\u00e1ch l\u1eafp r\u00e1p Transistor\" width=\"750\" height=\"440\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-1.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-1-300x176.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-1-510x299.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-45564\" class=\"wp-caption-text\"><\/span> <span style=\"font-size: 17px;\">C\u00e1ch l\u1eafp r\u00e1p Transistor<\/span><\/figcaption><\/figure>\n<p id=\"id3786650\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">Trong 3 c\u00e1ch r\u00e1p tr\u00ean, c\u1ef1c chung ch\u00ednh l\u00e0 c\u1ef1c \u0111\u01b0\u1ee3c n\u1ed1i mass v\u00e0 d\u00f9ng chung cho c\u1ea3 hai ng\u00f5 v\u00e0o v\u00e0 ng\u00f5 ra.<\/span><\/p>\n<p id=\"id5147007\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">Trong m\u1ed7i c\u00e1ch r\u00e1p, ng\u01b0\u1eddi ta \u0111\u1ecbnh ngh\u0129a \u0111\u1ed9 l\u1ee3i d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u nh\u01b0 sau:<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 17px;\"><strong>\u0110\u1ed9 l\u1ee3i d\u00f2ng \u0111i\u1ec7n = D\u00f2ng \u0111i\u1ec7n ng\u00f5 ra \/ D\u00f2ng \u0111i\u1ec7n ng\u00f5 v\u00e0o<\/strong><\/span><\/p>\n<p id=\"id5237782\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">\u0110\u1ed9 l\u1ee3i d\u00f2ng \u0111i\u1ec7n c\u1ee7a transistor th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0 \u0111\u1ed9 l\u1ee3i trong c\u00e1ch r\u00e1p c\u1ef1c ph\u00e1t chung v\u00e0 c\u1ef1c n\u1ec1n chung. \u0110\u1ed9 l\u1ee3i d\u00f2ng \u0111i\u1ec7n trong c\u00e1ch r\u00e1p c\u1ef1c ph\u00e1t chung \u0111\u01b0\u1ee3c cho b\u1edfi:<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 17px;\"><strong>hFE \u2248 <span class=\"sup\">\u03b2<\/span>DC = IC\/IB<\/strong><\/span><\/p>\n<p id=\"id4424069\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">Nh\u01b0 v\u1eady: I<span class=\"sub\">C<\/span><span class=\"sup\">= \u03b2<span class=\"sub\">DC<\/span>.I<span class=\"sub\">B<\/span><\/span><\/span><\/p>\n<p id=\"id5104068\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">Nh\u01b0ng: I<span class=\"sub\">E\u00a0<\/span>= I<span class=\"sub\">C\u00a0<\/span>+ I<span class=\"sub\">B<\/span>\u00a0= \u03b2<span class=\"sub\">DC<\/span>.I<span class=\"sub\">B<\/span>+I<span class=\"sub\">B<\/span><\/span><\/p>\n<p id=\"id4858891\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">\u21d2 I<span class=\"sub\">E<\/span>\u00a0= (\u03b2<span class=\"sub\">DC\u00a0<\/span>+ 1).I<span class=\"sub\">B<\/span><\/span><\/p>\n<p id=\"id4242614\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">\u0110\u1ed9 l\u1ee3i d\u00f2ng \u0111i\u1ec7n trong c\u00e1ch r\u00e1p c\u1ef1c n\u1ec1n chung \u0111\u01b0\u1ee3c cho b\u1edfi:<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 17px;\"><strong>hFE \u2248 \u03b1DC = IC \/ IE<\/strong><\/span><\/p>\n<p id=\"id4934768\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">\u03b2<span class=\"sub\">DC<\/span>\u00a0c\u00f3 tr\u1ecb s\u1ed1 t\u1eeb v\u00e0i ch\u1ee5c \u0111\u1ebfn v\u00e0i tr\u0103m, th\u1eadm ch\u00ed c\u00f3 th\u1ec3 l\u00ean \u0111\u1ebfn h\u00e0ng ng\u00e0n. \u03b1<span class=\"sub\">DC<\/span>\u00a0c\u00f3 tr\u1ecb t\u1eeb 0,95 \u0111\u1ebfn 0,999\u2026 tu\u1ef3 theo lo\u1ea1i transistor. Hai th\u00f4ng s\u1ed1 \u03b2<span class=\"sub\">DC<\/span>\u00a0v\u00e0 \u03b1<span class=\"sub\">DC<\/span>\u00a0\u0111\u01b0\u1ee3c nh\u00e0 s\u1ea3n xu\u1ea5t cho bi\u1ebft.<\/span><\/p>\n<p id=\"id4888722\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">T\u1eeb ph\u01b0\u01a1ng tr\u00ecnh c\u0103n b\u1ea3n:<\/span><\/p>\n<p id=\"id3706361\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">I<span class=\"sub\">E\u00a0<\/span>= I<span class=\"sub\">C<\/span>\u00a0+ I<span class=\"sub\">B<\/span><\/span><\/p>\n<p id=\"id5818070\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">Ta c\u00f3: I<span class=\"sub\">C<\/span>\u00a0= I<span class=\"sub\">E<\/span>\u00a0\u2013 I<span class=\"sub\">B<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span id=\"id5041195_media\" class=\"media\" style=\"font-size: 17px;\"><img decoding=\"async\" src=\"https:\/\/hocvienit.vn\/images\/dientucoban\/lap-rap-tranzitor-2.png\" alt=\"\" \/>Chia c\u1ea3 2 b\u1ebf cho IC, ta \u0111\u01b0\u1ee3c:<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 17px;\">1 = IE \/ IC &#8211; IB \/ IC = 1 \/ (IC \/ IE) &#8211; 1 \/ (IC \/ IB)<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 17px;\">Nh\u01b0 v\u1eady: 1 = 1 \/ \u03b1<span class=\"sub\">DC &#8211; 1 \/ \u03b2DC<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 17px;\">Gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh n\u00e0y \u0111\u1ec3 t\u00ecm \u03b2DC hay \u03b1DC, ta \u0111\u01b0\u1ee3c:<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 17px;\">\u03b2DC = \u03b1DC \/ (1 &#8211; \u03b1DC) v\u00e0 \u03b1DC = \u03b2DC \/ (1+ \u03b2DC_<\/span><\/p>\n<p id=\"id5147453\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\"><em>* Ghi ch\u00fa: c\u00e1c c\u00f4ng th\u1ee9c tr\u00ean l\u00e0 t\u1ed5ng qu\u00e1t, ngh\u0129a l\u00e0 v\u1eabn \u0111\u00fang v\u1edbi transistor PNP.<\/em><\/span><\/p>\n<p id=\"id5599400\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">Ta ch\u00fa \u00fd d\u00f2ng \u0111i\u1ec7n th\u1ef1c ch\u1ea1y trong hai transistor PNP v\u00e0 NPN c\u00f3 chi\u1ec1u nh\u01b0 sau:<\/span><\/p>\n<figure id=\"attachment_45565\" aria-describedby=\"caption-attachment-45565\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-45565 size-full\" title=\"D\u00f2ng \u0111i\u1ec7n th\u1ef1c ch\u1ea1y trong hai transistor PNP v\u00e0 NPN\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-2.jpg\" alt=\"D\u00f2ng \u0111i\u1ec7n th\u1ef1c ch\u1ea1y trong hai transistor PNP v\u00e0 NPN\" width=\"750\" height=\"440\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-2.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-2-300x176.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/cach-lap-rap-transistor-va-do-loi-dong-dien-2-510x299.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-45565\" class=\"wp-caption-text\"><\/span> <span style=\"font-size: 17px;\">D\u00f2ng \u0111i\u1ec7n th\u1ef1c ch\u1ea1y trong hai transistor PNP v\u00e0 NPN<\/span><\/figcaption><\/figure>\n<p id=\"id3675765\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">Th\u00ed d\u1ee5:<\/span><\/p>\n<p id=\"id3873747\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">M\u1ed9t transistor NPN, Si \u0111\u01b0\u1ee3c ph\u00e2n c\u1ef1c sau cho I<span class=\"sub\">C<\/span>\u00a0= 1mA v\u00e0 I<span class=\"sub\">B<\/span>\u00a0= 10\u03bcA.<\/span><\/p>\n<p id=\"id4841447\" class=\"para\" style=\"text-align: justify;\"><span style=\"font-size: 17px;\">T\u00ednh \u03b2<span class=\"sub\">DC<\/span>, I<span class=\"sub\">E<\/span>, \u03b1<span class=\"sub\">DC<\/span>.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 17px;\"><strong>Gi\u1ea3i:<\/strong> T\u1eeb ph\u01b0\u01a1ng tr\u00ecnh:<\/span><\/p>\n<p><span style=\"font-size: 17px;\">\u03b2DC = IC \/ IB, ta c\u00f3: \u03b2DC =\u00a0 1mA \/ 10\u03bcA = 100<\/span><\/p>\n<p><span style=\"font-size: 17px;\">T\u1eeb ph\u01b0\u01a1ng tr\u00ecnh:<\/span><\/p>\n<p><span style=\"font-size: 17px;\">IE = IC + IB, ta c\u00f3: IE = 1mA + 0,01mA = 1,01mA<\/span><\/p>\n<p><span style=\"font-size: 17px;\">V\u00e0 t\u1eeb ph\u01b0\u01a1ng tr\u00ecnh: \u03b2DC\u00a0= IC \/ IB = 1mA \/ 1,01mA = 0,99<\/span><\/p>\n<p><span style=\"font-size: 17px;\">M\u1ed9t transistor Si PNP c\u00f3 \u03b2DC = 50 khi IE = 1,5mA. X\u00e1c \u0111\u1ecbnh IC.<\/span><\/p>\n<p><span style=\"font-size: 17px;\">Gi\u1ea3i:<\/span><\/p>\n<p><span style=\"font-size: 17px;\">\u03b1<span class=\"sub\">DC = \u03b2DC \/ (1 + \u03b2DC) = 50 \/ (1+50) = 0,98<\/span><\/span><\/p>\n<p><span style=\"font-size: 17px;\">IC = \u03b2DC * IE = 0,98 * 1,5 = 1,47mA<\/span><\/p>\n<p style=\"text-align: justify;\"><i>M\u1ecdi chi ti\u1ebft xin vui l\u00f2ng li\u00ean h\u1ec7:<\/i><\/p>\n<p style=\"text-align: justify;\"><strong>C\u00d4NG TY C\u1ed4 PH\u1ea6N H\u1eccC VI\u1ec6N IT<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>MST: 0108733789<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Hotline: 0981 223 001<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Facebook:<\/strong>\u00a0<a href=\"http:\/\/www.fb.com\/hocvienit\" target=\"_blank\" rel=\"noopener\">www.fb.com\/hocvienit<\/a><\/p>\n<p style=\"text-align: left;\"><strong>\u0110\u0103ng k\u00fd k\u00eanh Youtube \u0111\u1ec3 theo d\u00f5i c\u00e1c b\u00e0i h\u1ecdc c\u1ee7a Hu\u1ea5n luy\u1ec7n vi\u00ean t\u1ed1t nh\u1ea5t:<\/strong>\u00a0<a href=\"http:\/\/bit.ly\/Youtube_HOCVIENiT\" target=\"_blank\" rel=\"noopener\">http:\/\/bit.ly\/Youtube_HOCVIENiT<\/a><\/p>\n<p style=\"text-align: justify;\"><strong>Tham gia c\u1ed9ng \u0111\u1ed3ng H\u1ecdc vi\u1ec7n IT.vn t\u1ea1i:<\/strong>\u00a0<a href=\"https:\/\/www.facebook.com\/groups\/www.hocvienit.vn\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.facebook.com\/groups\/www.hocvienit.vn\/<\/a><br \/>\n<i><\/i><\/p>\n<p style=\"text-align: justify;\"><strong><i>H\u1ecdc vi\u1ec7n IT.vn \u2013 Truy\u1ec1n ngh\u1ec1 th\u1ef1c t\u1ebf c\u00f9ng b\u1ea1n \u0111\u1ebfn th\u00e0nh c\u00f4ng!\u00a0<\/i><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Khi s\u1eed d\u1ee5ng, c\u00e1ch l\u1eafp r\u00e1p Transistor \u0111\u01b0\u1ee3c r\u00e1p theo m\u1ed9t trong 3 c\u00e1ch c\u0103n b\u1ea3n sau: R\u00e1p theo ki\u1ec3u c\u1ef1c n\u1ec1n chung (1). R\u00e1p theo ki\u1ec3u c\u1ef1c ph\u00e1t chung (2). R\u00e1p theo ki\u1ec3u c\u1ef1c thu chung (3)<\/p>\n","protected":false},"author":95,"featured_media":12330,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96,94],"tags":[666],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/2366"}],"collection":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/users\/95"}],"replies":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2366"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/2366\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/12330"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}