{"id":6858,"date":"2018-12-28T09:01:43","date_gmt":"2018-12-28T09:01:43","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=6858"},"modified":"2025-04-21T15:04:30","modified_gmt":"2025-04-21T08:04:30","slug":"huongdan-kiemtra-bonguon-atx","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=6858","title":{"rendered":"H\u01b0\u1edbng d\u1eabn ki\u1ec3m tra b\u1ed9 ngu\u1ed3n ATX"},"content":{"rendered":"<p>Ngu\u1ed3n l\u00e0 m\u1ed9t b\u1ed9 ph\u1eadn v\u00f4 c\u00f9ng quan tr\u1ecdng trong m\u00e1y t\u00ednh. N\u00f3 \u0111\u00f3ng vai tr\u00f2 cung c\u1ea5p \u0111i\u1ec7n n\u0103ng cho c\u00e1c linh ki\u1ec7n b\u00ean trong m\u00e1y t\u00ednh. Ch\u00ednh v\u00ec v\u1eady, khi ngu\u1ed3n m\u00e1y t\u00ednh b\u1ecb l\u1ed7i s\u1ebd khi\u1ebfn c\u00e1c linh ki\u1ec7n c\u0169ng \u1ea3nh h\u01b0\u1edfng theo.<\/p>\n<p>B\u1ea1n \u0111\u00e3 bi\u1ebft c\u00e1ch ki\u1ec3m tra ngu\u1ed3n m\u00e1y t\u00ednh s\u1ed1ng hay ch\u1ebft ch\u01b0a? H\u00e3y c\u00f9ng H\u1ecdc vi\u1ec7n iT t\u00ecm hi\u1ec3u ngay trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y nh\u00e9!<\/p>\n<figure id=\"attachment_12638\" aria-describedby=\"caption-attachment-12638\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-12638 size-full\" title=\"H\u01b0\u1edbng d\u1eabn ki\u1ec3m tra b\u1ed9 ngu\u1ed3n ATX\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/12\/huong-dan-kiem-tra-bo-nguon-atx.jpg\" alt=\"H\u01b0\u1edbng d\u1eabn ki\u1ec3m tra b\u1ed9 ngu\u1ed3n ATX\" width=\"750\" height=\"400\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/12\/huong-dan-kiem-tra-bo-nguon-atx.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/12\/huong-dan-kiem-tra-bo-nguon-atx-510x272.jpg 510w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/12\/huong-dan-kiem-tra-bo-nguon-atx-300x160.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/12\/huong-dan-kiem-tra-bo-nguon-atx-600x320.jpg 600w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-12638\" class=\"wp-caption-text\">H\u01b0\u1edbng d\u1eabn ki\u1ec3m tra b\u1ed9 ngu\u1ed3n ATX<\/figcaption><\/figure>\n<h2><span style=\"font-weight: 400;\">1. Hi\u1ec7n t\u01b0\u1ee3ng \u201c S\u1ee5t \u00e1p\u201d<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Sau m\u1ed9t th\u1eddi gian d\u00e0i s\u1eed d\u1ee5ng \u0111a s\u1ed1 c\u00e1c b\u1ed9 ngu\u1ed3n \u0111\u1ec1u b\u1ecb \u201cy\u1ebfu \u0111i\u201d. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y d\u00e2n k\u1ef9 thu\u1eadt g\u1ecdi l\u00e0 \u201cs\u1ee5t \u00e1p\u201d. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ta d\u1ec5 th\u1ea5y \u0111\u01b0\u1ee3c r\u1eb1ng l\u00e0: \u0111o ngu\u1ed3n r\u1eddi c\u00f3 5V, 12V, 3v3 nh\u01b0ng c\u1eafm v\u00e0o main th\u00ec kh\u00f4ng ch\u1ea1y ho\u1eb7c n\u1ebfu c\u00f3 ch\u1ea1y th\u00ec c\u0169ng b\u1ecb ch\u1eadp ch\u1eddn hay treo m\u00e1y v\u00e0 hay kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u1ed9t c\u00e1ch ng\u1eabu nhi\u00ean.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00e1ch Test \u0111\u01a1n gi\u1ea3n nh\u1ea5t l\u00e0 ta d\u00f9ng m\u1ed9t \u0111i\u1ec7n tr\u1edf t\u1ea3i (\u0111i\u1ec7n tr\u1edf s\u1ee9 trong c\u00e1c monitor CRT hay tivi) ch\u1eebng v\u00e0i \u00f4m v\u00e0 v\u00e0i ch\u1ee5c W. K\u1eb9p song song v\u1edbi que \u0111o \u0111\u1ed3ng h\u1ed3 khi \u0111\u00f3.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">N\u1ebfu m\u1ee9c s\u1ee5t \u00e1p &lt;= 5% l\u00e0 \u0111\u01b0\u1ee3c.<\/span><\/p>\n<p><b>Ch\u00fa th\u00edch:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">+ 5V &gt;=4.75V<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ 12V &gt;= 11.4V<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ 3.3V &gt;= 3.15V <\/span><\/p>\n<h2><span style=\"font-weight: 400;\">2. C\u00e1c nguy\u00ean nh\u00e2n v\u00e0 c\u00e1ch x\u1eed l\u00fd<\/span><\/h2>\n<p><span style=\"font-weight: 400;\"><strong>+ T\u1ee5 l\u1ecdc ngu\u1ed3n ng\u00f5 v\u00f4 (2 t\u1ee5 to) kh\u00f4 ho\u1eb7c kh\u00f4ng c\u00e2n b\u1eb1ng:<\/strong> Thay c\u1eb7p kh\u00e1c l\u00e0 \u0111\u01b0\u1ee3c.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>+ C\u1eb7p <a href=\"https:\/\/hocvienit.vn\/tong-hop-kien-thuc-co-ban-ve-transistor\/\">transistor<\/a> c\u00f4ng su\u1ea5t r\u1ec9, y\u1ebfu:<\/strong> Thay t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ho\u1eb7c thay b\u1eb1ng E13007.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>+ C\u1eb7p transistor nh\u00ed \u0111\u1ea3o pha (driver) r\u1ec9, y\u1ebfu:<\/strong> thay b\u1eb1ng C945 (x\u1ea3 trong c\u00e1c b\u1ed9 ngu\u1ed3n) ho\u1eb7c C1815.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>+ Ic giao \u0111\u1ed9ng b\u1ecb l\u1ed7i:<\/strong> thay TL494, KA7500 (494 v\u00e0 7500 thay th\u1ebf cho nhau \u0111\u1ec1u \u0111\u01b0\u1ee3c)<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>+ C\u00e1c t\u1ee5 l\u1ecdc ng\u00f5 ra kh\u00f4 ho\u1eb7c ph\u00f9:<\/strong> thay t\u1ee5 to h\u01a1n v\u00f4 ho\u1eb7c mua 1 b\u1ecbch 16V\/2200MF thay cho t\u1ea5t c\u1ea3 c\u00e1c \u0111\u01b0\u1eddng ch\u00ednh 5V, 12V, 3.3V l\u00e0 \u0111\u01b0\u1ee3c.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>+ Diode sung (diode k\u00e9p d\u1ea1ng 3 ch\u00e2n nh\u01b0 transistor c\u00f4ng su\u1ea5t) \u1edf ng\u00f5 ra:<\/strong> \u00edt x\u1ea3y ra nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00e0 kh\u00f4ng c\u00f3.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>+ Cu\u1ed9n d\u00e2y (bi\u1ebfn \u00e1p ch\u00ednh) b\u1ecb r\u1ec9:<\/strong> r\u1ea5t \u00edt x\u1ea3y ra, khi thay nh\u1edb so s\u00e1nh ch\u00e2n ho\u1eb7c xem k\u00fd hi\u1ec7u tr\u00ean l\u01b0ng ph\u1ea3i gi\u1ed1ng nhau.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">3. C\u00e1ch ki\u1ec3m tra<\/span><\/h2>\n<h3><span style=\"font-weight: 400;\">\u0110o \u0111i\u1ec7n th\u1ebf d\u00e2y xanh (power on)<\/span><\/h3>\n<div class=\"mceTemp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-12472\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/09\/cau-tao-co-ban-cua-dong-ho-van-nang.jpg\" alt=\"C\u1ea5u t\u1ea1o c\u01a1 b\u1ea3n c\u1ee7a \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng\" width=\"750\" height=\"400\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/09\/cau-tao-co-ban-cua-dong-ho-van-nang.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/09\/cau-tao-co-ban-cua-dong-ho-van-nang-510x272.jpg 510w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/09\/cau-tao-co-ban-cua-dong-ho-van-nang-300x160.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/09\/cau-tao-co-ban-cua-dong-ho-van-nang-600x320.jpg 600w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/p>\n<ul id=\"attachment_12472\" class=\"wp-caption aligncenter\" style=\"width: 750px;\">C\u1ea5u t\u1ea1o c\u01a1 b\u1ea3n c\u1ee7a \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng<\/ul>\n<\/div>\n<p>&nbsp;<\/p>\n<ul>\n<li><span style=\"font-weight: 400;\"><strong>C\u00f3 kho\u1ea3ng 3 Volt \u0111\u1ebfn 5 Volt:<\/strong> Ngu\u1ed3n c\u1ea5p tr\u01b0\u1edbc t\u1ed1t.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">&#8211; N\u1ed1i d\u00e2y xanh v\u00e0 \u0111en Th\u1ea5y qu\u1ea1t ch\u1ea1y l\u00e0 ngu\u1ed3n &#8220;\u0111\u00e3 ch\u1ea1y&#8221; nh\u01b0ng ch\u01b0a bi\u1ebft c\u00f3 &#8220;t\u1ed1t&#8221; (\u0111\u1ee7 Ampere) hay kh\u00f4ng?<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\"><strong>Ki\u1ec3m tra c\u01b0\u1eddng \u0111\u1ed9: <\/strong>C\u00f3 nhi\u1ec1u c\u00e1ch <\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">&#8211; M\u00ecnh m\u00e1ch cho b\u1ea1n c\u00e1ch ki\u1ec3m tra \u0111\u01a1n gi\u1ea3n v\u00e0 nhanh nh\u1ea5t l\u00e0:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ \u0110\u1ec3 thang \u0111o 10A :\u0111o Ampere ngu\u1ed3n 5 volt m\u00e0 th\u1ea5y kim l\u00ean m\u00fac l\u00e0 t\u1ed1t.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ N\u1ebfu \u0111\u1ed3ng h\u1ed3 b\u1ea1n ko c\u00f3 thang \u0111o Ampere 10A th\u00ec b\u1ea1n s\u1eed d\u1ee5ng c\u00e1ch th\u00f4ng th\u01b0\u1eddng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; Xem tr\u00ean n\u1eafp b\u1ed9 ngu\u1ed3n th\u00f4ng s\u1ed1 nh\u01b0 th\u1ebf n\u00e0o r\u1ed3i th\u1eed.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ Ch\u1ecdn \u0111i\u1ec7n tr\u1edf s\u1ee9 theo ti\u00eau chu\u1ea9n <strong>P=U*I<\/strong><\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ Th\u1eed ampere theo c\u00f4ng th\u1ee9c<strong> I=U\/R<\/strong><\/span><\/p>\n<p><b>V\u00ed d\u1ee5<\/b><span style=\"font-weight: 400;\">: tr\u00ean ngu\u1ed3n ghi 5V\/5A<\/span><\/p>\n<p><b>Gi\u1ea3i:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Th\u1eed ngu\u1ed3n \u1edf 80% th\u00ec R=U\/I=5\/(0.8*5)=1.25 ohm<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Ch\u1ecdn c\u00f4ng su\u1ea5t \u0111i\u1ec7n tr\u1edf P=U*I= 5*5=25W<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u21d2 V\u1eady ph\u1ea3i ch\u1ecdn R=1.25ohm\/25W<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00e1c m\u1ee9c ngu\u1ed3n c\u00f2n l\u1ea1i t\u00ednh to\u00e1n t\u01b0\u01a1ng t\u1ef1. <\/span><\/p>\n<p><b>Note:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Khi \u0111o n\u1ebfu check ngu\u1ed3n m\u00e1y t\u00ednh c\u00f2n h\u01b0 ho\u1eb7c linh ki\u1ec7n n\u00e0o m\u1ea5t ph\u1ea9m ch\u1ea5t th\u00ec n\u00f3 h\u01b0 li\u1ec1n cho n\u00ean b\u1ea1n ch\u1ec9 nh\u1ea5p xem kim l\u00ean m\u00fac ch\u01b0a. N\u1ebfu ch\u01b0a th\u00ec b\u1ea1n ti\u1ebfn h\u00e0nh s\u1eeda ti\u1ebfp.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Ta s\u1ebd d\u00f9ng c\u00e1ch \u0111o n\u00e0y \u0111\u1ec3 t\u00ecm Pan lu\u00f4n v\u00ec n\u1ebfu c\u00f3 linh ki\u1ec7n n\u00e0o m\u1ea5t ph\u1ea9m ch\u1ea5t th\u00ec n\u00f3 s\u1ebd b\u1ecb h\u1ecfng.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">4. Th\u00e1o b\u1ed9 ngu\u1ed3n ra quan s\u00e1t<\/span><\/h2>\n<h3><span style=\"font-weight: 400;\">V\u1ec7 sinh tr\u01b0\u1edbc v\u00e0 ki\u1ec3m tra d\u1ea5u ch\u00e1y n\u1ed5<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">N\u1ebfu c\u00f3 ch\u00e1y n\u1ed5 th\u00ec ph\u1ea3i ki\u1ec3m tra c\u00e1c linh ki\u1ec7n v\u00e0 thay c\u00e1i m\u1edbi v\u00e0o cho th\u1eadt ch\u00ednh x\u00e1c (n\u1ebfu kh\u00f4ng ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 s\u1ebd t\u1ea1o ra th\u00eam Pan m\u1edbi).<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">\u0110o Volt <\/span><\/h3>\n<p><span style=\"font-weight: 400;\"><strong>\u0110o Volt 2 \u0111\u1ea7u t\u1ee5 l\u1ecdc ngu\u1ed3n tr\u01b0\u1edbc<\/strong> <\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ Ph\u1ea3i c\u00f3 kho\u1ea3ng 155V v\u00e0 2 \u0111\u1ea7u kia c\u0169ng ph\u1ea3i c\u00f3 kho\u1ea3ng 155 Volt.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ Minh h\u1ecda c\u00e1ch \u0111o \u0111i\u1ec7n \u00e1p t\u1ee5 l\u1ecdc ngu\u1ed3n ch\u1ec9nh l\u01b0u (2 t\u1ee5 to).<\/span><\/p>\n<figure id=\"attachment_8905\" aria-describedby=\"caption-attachment-8905\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8905\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2019\/03\/tu-dien.jpg\" alt=\"T\u1ee5 \u0111i\u1ec7n\" width=\"600\" height=\"349\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2019\/03\/tu-dien.jpg 600w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2019\/03\/tu-dien-510x297.jpg 510w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2019\/03\/tu-dien-300x175.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-8905\" class=\"wp-caption-text\">T\u1ee5 \u0111i\u1ec7n<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\"><strong>Ch\u00fa \u00fd<\/strong>: \u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">2 \u0111i\u1ec7n th\u1ebf n\u00e0y ph\u1ea3i c\u00e2n nhau. N\u1ebfu kh\u00f4ng c\u00e2n s\u1ebd xinh ra b\u1ec7nh ngu\u1ed3n v\u00e0 ra thi\u1ebfu Amper.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">N\u1ebfu kh\u00f4ng c\u00e2n Volt: B\u1ea1n ki\u1ec3m tra l\u1ea1i 2 t\u1ee5 v\u00e0 2 \u0111i\u1ec7n tr\u1edf kho\u1ea3ng 150k (n\u1ed1i song song v\u1edbi 2 t\u1ee5)<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">C\u1ea7n ph\u1ea3i ch\u00fa \u00fd xem: c\u1eb7p c\u00f4ng su\u1ea5t c\u00f3 b\u1ecb r\u1ec9 kh\u00f4ng? <\/span><span style=\"font-weight: 400;\">Ki\u1ec3m tra t\u00ecnh tr\u1ea1ng t\u1ee5 ngu\u1ed3n xem c\u00f3 ph\u00f9 t\u1ee5 hay x\u00ec dung m\u00f4i kh\u00f4ng? V\u00e0 ki\u1ec3m tra c\u00e1c t\u1ee5 l\u1ecdc xem ch\u00fang c\u00f3 b\u1ecb kh\u00f4 kh\u00f4ng?<\/span><\/li>\n<\/ul>\n<p><strong>\u0110o 5 volt c\u1ea5p tr\u01b0\u1edbc n\u1ebfu kh\u00f4ng c\u00f3<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Ki\u1ec3m tra Fet ho\u1eb7c <\/span><span style=\"font-weight: 400;\">transistor <\/span><span style=\"font-weight: 400;\">c\u00f4ng su\u1ea5t ngu\u1ed3n tr\u01b0\u1edbc.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">\u0110i\u1ec7n tr\u1edf v\u00e0i tr\u0103m kOhm k\u00edch tr\u01b0\u1edbc ho\u1eb7c <\/span><span style=\"font-weight: 400;\">transistor <\/span><span style=\"font-weight: 400;\">k\u00edch tr\u01b0\u1edbc.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">N\u1ebfu m\u1ea1ch c\u00f3 IC dao \u0111\u1ed9ng k\u00edch tr\u01b0\u1edbc th\u00ec b\u1ea1n ph\u1ea3i g\u1eafn con Fet ho\u1eb7c\u00a0<\/span><span style=\"font-weight: 400;\">transistor <\/span><span style=\"font-weight: 400;\">v\u00e0o m\u00e0 th\u1eed \u0111o ch\u00e2n c\u1ea5p cho G c\u00f3 Volt dao \u0111\u1ed9ng kho\u1ea3ng 2 Volt kh\u00f4ng<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">+ N\u1ebfu ko b\u1ea1n x\u1ea3 tr\u1ed1ng ch\u00e2n b\u1ea3o v\u1ec7 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh IC c\u00f3 t\u1ed1t ch\u01b0a?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ N\u1ebfu c\u00f3 dao \u0111\u1ed9ng kho\u1ea3ng 2 V b\u1ea1n g\u1eafn Feet v\u00e0o (c\u00e1ch n\u00e0y gi\u00fap \u0111\u1ee1 hao linh ki\u1ec7n v\u00ec c\u00f3 nhi\u1ec1u c\u00e1i khi g\u1eafn Fet v\u00e0o m\u1edf ngu\u1ed3n )<\/span><\/p>\n<p><strong>\u0110\u1ebfn \u0111\u00e2y n\u1ebfu ch\u01b0a ra 5V v\u00e0 12V c\u1ea5p cho dao ngu\u1ed3n ch\u00ednh th\u00ec b\u1ea1n h\u00e3y ki\u1ec3m tra ph\u1ea7n s\u01a1 c\u1ea5p.<\/strong><\/p>\n<h3><span style=\"font-weight: 400;\">\u0110\u1ebfn \u0111\u00e2y b\u1ea1n \u0111\u00e3 c\u00f3 ngu\u1ed3n c\u1ea5p tr\u01b0\u1edbc 5 Volt r\u1ed3i<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Ki\u1ec3m tra xem c\u00f3 ngu\u1ed3n 12V c\u1ea5p cho con IC dao \u0111\u1ed9ng ngu\u1ed3n ch\u00ednh ko?<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">\u0110a s\u1ed1 khi c\u00f3 5v th\u00ec 12v c\u00f3 lu\u00f4n.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">B\u00e2y gi\u1edd b\u1ea1n ch\u1eadm ngu\u1ed3n 5v xu\u1ed1ng max v\u00e0 \u0111o t\u1ea1i 1 trong 3 \u0111i\u1ec3m c\u1ee7a <\/span><span style=\"font-weight: 400;\">Transfor <\/span><span style=\"font-weight: 400;\">k\u1ebf b\u00ean xem coi c\u00f3 thay \u0111\u1ed5i kh\u00f4ng ? (Transfor n\u00e0y l\u00e0m nhi\u1ec7m v\u1ee5 k\u00edch cho ngu\u1ed3n sau v\u00e0 c\u1ea5p dao \u0111\u1ed9ng cho 2 con fet or <\/span><span style=\"font-weight: 400;\">transistor <\/span><span style=\"font-weight: 400;\">c\u00f4ng su\u1ea5t ch\u1ea1y ngu\u1ed3n ch\u00ednh).<\/span><\/li>\n<\/ul>\n<p><strong>N\u1ebfu ko th\u1ea5y thay \u0111\u1ed5i t\u1ea1i 1 trong 3 \u0111i\u1ec3m \u1ea5y b\u1ea1n ki\u1ec3m tra th\u00eam:<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">+ Xem Ic dao \u0111\u1ed9ng ngu\u1ed3n ch\u00ednh c\u00f3 ch\u1ea1y ch\u01b0a?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ X\u00e3 ch\u00e2n out c\u1ee7a con Ic dao \u0111\u1ed9ng ngu\u1ed3n ch\u00ednh \u0111c c\u1ea5p b\u1edfi 12v \u0111o AC xem c\u00f3 volt kh\u00f4ng? Ho\u1eb7c n\u1ed1i v\u1edbi 1 tu Pi \u0111\u1ec3 c\u00e1ch ly DC<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ Ki\u1ec3m tra 1 or 2 con <\/span><span style=\"font-weight: 400;\">transistor <\/span><span style=\"font-weight: 400;\">l\u00e0m nhi\u1ec7m v\u1ee5 SW ngu\u1ed3n th\u01b0\u1eddng l\u00e0 con C945, C1815&#8230;<\/span><\/p>\n<p><b>Ch\u00fa \u00fd<\/b><span style=\"font-weight: 400;\">: Khi ch\u1eadp 5 Volt xu\u1ed1ng max n\u1ebfu th\u1ea5y qu\u1ea1t quay r\u1ed3i t\u1eaft th\u00ec b\u1ea1n b\u1ecf qua giai \u0111o\u1ea1n ki\u1ec3m tra tr\u00ean.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">B\u00e2y gi\u1edd b\u1ea1n ch\u1ec9 d\u00f9ng \u0111\u1ed3ng h\u1ed3 \u0111o OHM<\/span><\/h3>\n<figure id=\"attachment_44306\" aria-describedby=\"caption-attachment-44306\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44306 size-full\" title=\"\u0110\u1ed3ng h\u1ed3 \u0111o OHM\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/12\/huong-dan-kiem-tra-bo-nguon-atx-1.jpg\" alt=\"\u0110\u1ed3ng h\u1ed3 \u0111o OHM\" width=\"750\" height=\"562\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/12\/huong-dan-kiem-tra-bo-nguon-atx-1.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/12\/huong-dan-kiem-tra-bo-nguon-atx-1-300x225.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/12\/huong-dan-kiem-tra-bo-nguon-atx-1-510x382.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44306\" class=\"wp-caption-text\">\u0110\u1ed3ng h\u1ed3 \u0111o OHM<\/figcaption><\/figure>\n<p><strong>Ki\u1ec3m tra 2 con Fet or transistor c\u00f4ng su\u1ea5t c\u1ea5p cho ngu\u1ed3n ch\u00ednh:<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; 2 con n\u00e0y tuy\u1ec7t \u0111\u1ed1i ph\u1ea3i gi\u1ed1ng nhau. N\u1ebfu thay con m\u1edbi kh\u00f4ng \u0111\u00fang s\u1ed1 th\u00ec ph\u1ea3i tra DataSheet c\u00f3 :<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ \u0110i\u1ec7n th\u1ebf C or S cao h\u01a1n ho\u1eb7c b\u1eb1ng con c\u1ee7<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ Amper cao h\u01a1n or b\u1eb1ng con c\u1ee7<\/span><\/p>\n<p><span style=\"font-weight: 400;\">+ H\u1ec7 s\u1ed1 khuy\u1ebfch \u0111\u1ea1i cao h\u01a1n ho\u1eb7c b\u1eb1ng con c\u1ee7<\/span><\/p>\n<p><em>Ch\u00fa \u00fd<span style=\"font-weight: 400;\">: 2 con n\u00e0y quy\u1ebft \u0111\u1ecbnh c\u00f4ng su\u1ea5t c\u1ee7a b\u1ed9 ngu\u1ed3n<\/span><\/em><\/p>\n<p><strong>Ki\u1ec3m tra c\u00e1c linh ki\u1ec7n: diode, \u0111i\u1ec7n tr\u1edf (ph\u1ea3i ch\u00ednh x\u00e1c), t\u1ee5 c\u00f3 li\u00ean quan v\u1edbi 2 con Fet.<\/strong><\/p>\n<p><em>Ch\u00fa \u00fd:<span style=\"font-weight: 400;\"> C\u00e1c linh ki\u1ec7n n\u00e0y ph\u1ea3i th\u1eadt ch\u00ednh x\u00e1c v\u00ec ngu\u1ed3n ATX l\u00e0m vi\u1ec7c r\u1ea5t \u1ed5n \u0111\u1ecbnh kh\u00f4ng nh\u01b0 b\u00ean Ti Vi thay nh\u1eefng tr\u1ecb s\u1ed1 g\u1ea7n \u0111\u00fang l\u00e0 \u0111\u01b0\u1ee3c.<\/span><\/em><\/p>\n<p><strong>Ki\u1ec3m tra ph\u1ea7n s\u01a1 c\u1ea5p c\u0169ng d\u00f9ng \u0111\u1ed3ng h\u1ed3 \u0111o OHM.<\/strong><\/p>\n<p><i>M\u1ecdi chi ti\u1ebft xin vui l\u00f2ng li\u00ean h\u1ec7:<\/i><\/p>\n<p><strong>C\u00d4NG TY C\u1ed4 PH\u1ea6N H\u1eccC VI\u1ec6N IT<\/strong><\/p>\n<p><strong>MST: 0108733789<\/strong><\/p>\n<p><strong>Hotline: 0981 223 001<\/strong><\/p>\n<p><strong>Facebook:<\/strong>\u00a0<a href=\"http:\/\/www.fb.com\/hocvienit\" target=\"_blank\" rel=\"noopener\">www.fb.com\/hocvienit<\/a><\/p>\n<p><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><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><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<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sau m\u1ed9t th\u1eddi gian d\u00e0i s\u1eed d\u1ee5ng \u0111a s\u1ed1 c\u00e1c b\u1ed9 ngu\u1ed3n \u0111\u1ec1u b\u1ecb \u201cy\u1ebfu \u0111i\u201d. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y d\u00e2n k\u1ef9 thu\u1eadt g\u1ecdi l\u00e0 \u201cs\u1ee5t \u00e1p\u201d. Ta d\u1ec5 th\u1ea5y \u0111\u01b0\u1ee3c r\u1eb1ng l\u00e0: \u0111o ngu\u1ed3n r\u1eddi c\u00f3 5V, 12V, 3v3 nh\u01b0ng c\u1eafm v\u00e0o main th\u00ec kh\u00f4ng ch\u1ea1y ho\u1eb7c n\u1ebfu c\u00f3 ch\u1ea1y th\u00ec c\u0169ng b\u1ecb ch\u1eadp ch\u1eddn hay treo m\u00e1y v\u00e0 hay kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u1ed9t c\u00e1ch ng\u1eabu nhi\u00ean.<\/p>\n","protected":false},"author":95,"featured_media":12638,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96,94],"tags":[239],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/6858"}],"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=6858"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/6858\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/12638"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}