{"id":1577,"date":"2018-07-06T04:54:49","date_gmt":"2018-07-06T04:54:49","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=1577"},"modified":"2025-01-02T17:32:14","modified_gmt":"2025-01-02T10:32:14","slug":"co-ban-ve-mach-chinh-luu-va-on-ap","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=1577","title":{"rendered":"C\u01a1 b\u1ea3n v\u1ec1 m\u1ea1ch ch\u1ec9nh l\u01b0u v\u00e0 \u1ed5n \u00e1p"},"content":{"rendered":"<div style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Trong c\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u1eed c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 Radio, Cassette, Amlpy, Ti vi m\u00e0u, \u0110\u1ea7u VCD&#8230; ch\u00fang s\u1eed d\u1ee5ng ngu\u1ed3n m\u1ed9t chi\u1ec1u DC \u1edf c\u00e1c m\u1ee9c \u0111i\u1ec7n \u00e1p kh\u00e1c nhau, nh\u01b0ng \u1edf ngo\u00e0i gi\u1eafc c\u1eafm c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb n\u00e0y l\u1ea1i c\u1eafm tr\u1ef1c ti\u1ebfp v\u00e0o ngu\u1ed3n \u0111i\u1ec7n AC 220V 50Hz. Sau \u0111\u00e2y, h\u00e3y c\u00f9ng H\u1ecdc vi\u1ec7n iT\u00a0t\u00ecm hi\u1ec3u v\u1ec1 c\u01a1 b\u1ea3n v\u1ec1 m\u1ea1ch ch\u1ec9nh l\u01b0u v\u00e0 \u1ed5n \u00e1p.<\/span><\/div>\n<figure id=\"attachment_12049\" aria-describedby=\"caption-attachment-12049\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-12049 size-full\" title=\"C\u01a1 b\u1ea3n v\u1ec1 m\u1ea1ch ch\u1ec9nh l\u01b0u v\u00e0 \u1ed5n \u00e1p\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-mach-chinh-luu-va-on-ap.jpg\" alt=\"C\u01a1 b\u1ea3n v\u1ec1 m\u1ea1ch ch\u1ec9nh l\u01b0u v\u00e0 \u1ed5n \u00e1p\" width=\"750\" height=\"400\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-mach-chinh-luu-va-on-ap.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-mach-chinh-luu-va-on-ap-510x272.jpg 510w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-mach-chinh-luu-va-on-ap-300x160.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-mach-chinh-luu-va-on-ap-600x320.jpg 600w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-12049\" class=\"wp-caption-text\">C\u01a1 b\u1ea3n v\u1ec1 m\u1ea1ch ch\u1ec9nh l\u01b0u v\u00e0 \u1ed5n \u00e1p<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>1 &#8211; M\u1ea1ch ch\u1ec9nh l\u01b0u \u0111i\u1ec7n xoay chi\u1ec1u<\/strong><\/span><\/h2>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>1.1 &#8211; B\u1ed9 ngu\u1ed3n trong c\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u1eed<\/strong><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">C\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u1ea7n c\u00f3 m\u1ed9t b\u1ed9 ph\u1eadn \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i t\u1eeb ngu\u1ed3n xoay chi\u1ec1u ra \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u , cung c\u1ea5p cho c\u00e1c m\u1ea1ch tr\u00ean, b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed5i bao g\u1ed3m:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>Bi\u1ebfn \u00e1p ngu\u1ed3n:<\/strong> H\u1ea1 th\u1ebf t\u1eeb 220V xu\u1ed1ng c\u00e1c \u0111i\u1ec7n \u00e1p th\u1ea5p h\u01a1n nh\u01b0 6V, 9V, 12V, 24V v v &#8230;<\/span><\/li>\n<li><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>M\u1ea1ch ch\u1ec9nh l\u01b0u:<\/strong> \u0110\u1ed5i \u0111i\u1ec7n AC th\u00e0nh DC.<\/span><\/li>\n<li><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>M\u1ea1ch l\u1ecdc:<\/strong> L\u1ecdc g\u1ee3n xoay chi\u1ec1u sau ch\u1ec9nh l\u01b0u cho ngu\u1ed3n DC ph\u1eb3ng h\u01a1n.<\/span><\/li>\n<li><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>M\u1ea1ch \u1ed5n \u00e1p:<\/strong> Gi\u1eef m\u1ed9t \u0111i\u1ec7n \u00e1p c\u1ed1 \u0111\u1ecbnh cung c\u1ea5p cho t\u1ea3i ti\u00eau th\u1ee5<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_12050\" aria-describedby=\"caption-attachment-12050\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-12050 size-full\" title=\"S\u01a1 \u0111\u1ed3 m\u1ea1ch ch\u1ec9nh l\u01b0u v\u00e0 \u1ed5n \u00e1p\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/so-do-mach-chinh-luu-va-on-ap.jpg\" alt=\"S\u01a1 \u0111\u1ed3 m\u1ea1ch ch\u1ec9nh l\u01b0u v\u00e0 \u1ed5n \u00e1p\" width=\"750\" height=\"400\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/so-do-mach-chinh-luu-va-on-ap.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/so-do-mach-chinh-luu-va-on-ap-510x272.jpg 510w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/so-do-mach-chinh-luu-va-on-ap-300x160.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/so-do-mach-chinh-luu-va-on-ap-600x320.jpg 600w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-12050\" class=\"wp-caption-text\">S\u01a1 \u0111\u1ed3 m\u1ea1ch ch\u1ec9nh l\u01b0u v\u00e0 \u1ed5n \u00e1p<\/figcaption><\/figure>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>1.2 &#8211; M\u1ea1ch ch\u1ec9nh l\u01b0u b\u00e1n chu k\u1ef3<\/strong><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">M\u1ea1ch ch\u1ec9nh l\u01b0u b\u00e1n chu k\u1ef3 s\u1eed d\u1ee5ng m\u1ed9t Diode m\u1eafc n\u1ed1i ti\u1ebfp v\u1edbi t\u1ea3i ti\u00eau th\u1ee5, \u1edf chu k\u1ef3 d\u01b0\u01a1ng =&gt; Diode \u0111\u01b0\u1ee3c ph\u00e2n c\u1ef1c thu\u1eadn do \u0111\u00f3 c\u00f3 d\u00f2ng \u0111i\u1ec7n \u0111i qua diode v\u00e0 \u0111i qua t\u1ea3i, \u1edf chu k\u1ef3 \u00e2m, Diode b\u1ecb ph\u00e2n c\u1ef1c ng\u01b0\u1ee3c do \u0111\u00f3 kh\u00f4ng c\u00f3 d\u00f2ng qua t\u1ea3i.<\/span><\/p>\n<figure id=\"attachment_44864\" aria-describedby=\"caption-attachment-44864\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44864 size-full\" title=\"M\u1ea1ch ch\u1ec9nh l\u01b0u b\u00e1n chu k\u1ef3\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-1.jpg\" alt=\"M\u1ea1ch ch\u1ec9nh l\u01b0u b\u00e1n chu k\u1ef3\" width=\"750\" height=\"341\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-1.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-1-300x136.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-1-510x232.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44864\" class=\"wp-caption-text\">M\u1ea1ch ch\u1ec9nh l\u01b0u b\u00e1n chu k\u1ef3<\/figcaption><\/figure>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>1.3 M\u1ea1ch ch\u1ec9nh l\u01b0u c\u1ea3 chu k\u1ef3<\/strong><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">M\u1ea1ch ch\u1ec9nh l\u01b0u c\u1ea3 chu k\u1ef3 th\u01b0\u1eddng d\u00f9ng 4 Diode m\u1eafc theo h\u00ecnh c\u1ea7u (c\u00f2n g\u1ecdi l\u00e0 m\u1ea1ch ch\u1ec9nh l\u01b0u c\u1ea7u) nh\u01b0 h\u00ecnh d\u01b0\u1edbi.<\/span><\/p>\n<figure id=\"attachment_44865\" aria-describedby=\"caption-attachment-44865\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44865 size-full\" title=\"M\u1ea1ch ch\u1ec9nh l\u01b0u c\u1ea3 chu k\u1ef3\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-2.jpg\" alt=\"M\u1ea1ch ch\u1ec9nh l\u01b0u c\u1ea3 chu k\u1ef3\" width=\"750\" height=\"341\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-2.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-2-300x136.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-2-510x232.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44865\" class=\"wp-caption-text\">M\u1ea1ch ch\u1ec9nh l\u01b0u c\u1ea3 chu k\u1ef3<\/figcaption><\/figure>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">\u1ede<strong> chu k\u1ef3 d\u01b0\u01a1ng<\/strong> (\u0110\u1ea7u d\u00e2y ph\u00eda tr\u00ean d\u01b0\u01a1ng, ph\u00eda d\u01b0\u1edbi \u00e2m) d\u00f2ng \u0111i\u1ec7n \u0111i qua diode D1 =&gt; qua Rt\u1ea3i =&gt; qua diode D4 v\u1ec1 \u0111\u1ea7u d\u00e2y \u00e2m.<\/span><\/li>\n<li><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">\u1ede<strong> chu k\u1ef3 \u00e2m<\/strong>, \u0111i\u1ec7n \u00e1p tr\u00ean cu\u1ed9n th\u1ee9 c\u1ea5p \u0111\u1ea3o chi\u1ec1u (\u0110\u1ea7u d\u00e2y \u1edf tr\u00ean \u00e2m, \u1edf d\u01b0\u1edbi d\u01b0\u01a1ng) d\u00f2ng \u0111i\u1ec7n \u0111i qua D2 =&gt; qua Rt\u1ea3i =&gt; qua D3 v\u1ec1 \u0111\u1ea7u d\u00e2y \u00e2m.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Nh\u01b0 v\u1eady c\u1ea3 hai chu k\u1ef3 \u0111\u1ec1u c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua t\u1ea3i.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>2 &#8211; M\u1ea1ch l\u1ecdc v\u00e0 m\u1ea1ch ch\u1ec9nh l\u01b0u b\u1ed9i \u00e1p<\/strong><\/span><\/h2>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>2.1 &#8211; M\u1ea1ch l\u1ecdc d\u00f9ng t\u1ee5 \u0111i\u1ec7n<\/strong><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Sau khi ch\u1ec9nh l\u01b0u ta thu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u nh\u1ea5p nh\u00f4, n\u1ebfu kh\u00f4ng c\u00f3 t\u1ee5 l\u1ecdc th\u00ec \u0111i\u1ec7n \u00e1p nh\u1ea5p nh\u00f4 n\u00e0y ch\u01b0a th\u1ec3 d\u00f9ng \u0111\u01b0\u1ee3c v\u00e0o c\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u1eed, do \u0111\u00f3 trong c\u00e1c m\u1ea1ch ngu\u1ed3n, ta ph\u1ea3i l\u1eafp th\u00eam c\u00e1c t\u1ee5 l\u1ecdc c\u00f3 tr\u1ecb s\u1ed1 t\u1eeb v\u00e0i tr\u0103m \u00b5F \u0111\u1ebfn v\u00e0i ng\u00e0n \u00b5F v\u00e0o sau c\u1ea7u Diode ch\u1ec9nh l\u01b0u.<\/span><\/p>\n<figure id=\"attachment_44866\" aria-describedby=\"caption-attachment-44866\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44866 size-full\" title=\"M\u1ea1ch l\u1ecdc d\u00f9ng t\u1ee5 \u0111i\u1ec7n\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-3.jpg\" alt=\"M\u1ea1ch l\u1ecdc d\u00f9ng t\u1ee5 \u0111i\u1ec7n\" width=\"750\" height=\"341\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-3.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-3-300x136.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-3-510x232.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44866\" class=\"wp-caption-text\">M\u1ea1ch l\u1ecdc d\u00f9ng t\u1ee5 \u0111i\u1ec7n<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">S\u01a1 \u0111\u1ed3 tr\u00ean minh ho\u1ea1 c\u00e1c tr\u01b0\u1eddng h\u1ee3p m\u1ea1ch ngu\u1ed3n c\u00f3 t\u1ee5 l\u1ecdc v\u00e0 kh\u00f4ng c\u00f3 t\u1ee5 l\u1ecdc.<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Khi <strong>c\u00f4ng t\u1eafc K m\u1edf<\/strong>, m\u1ea1ch ch\u1ec9nh l\u01b0u kh\u00f4ng c\u00f3 t\u1ee5 l\u1ecdc tham gia, v\u00ec v\u1eady \u0111i\u1ec7n \u00e1p thu \u0111\u01b0\u1ee3c c\u00f3 d\u1ea1ng nh\u1ea5p nh\u00f4.<\/span><\/li>\n<li><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Khi <strong>c\u00f4ng t\u1eafc K \u0111\u00f3ng<\/strong>, m\u1ea1ch ch\u1ec9nh l\u01b0u c\u00f3 t\u1ee5 C1 tham gia l\u1ecdc ngu\u1ed3n, k\u1ebft qu\u1ea3 l\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra \u0111\u01b0\u1ee3c l\u1ecdc t\u01b0\u01a1ng \u0111\u1ed1i ph\u1eb3ng, n\u1ebfu t\u1ee5 C1 c\u00f3 \u0111i\u1ec7n dung c\u00e0ng l\u1edbn th\u00ec \u0111i\u1ec7n \u00e1p \u1edf \u0111\u1ea7u ra c\u00e0ng b\u1eb1ng ph\u1eb3ng, t\u1ee5 C1 trong c\u00e1c b\u1ed9 ngu\u1ed3n th\u01b0\u1eddng c\u00f3 tr\u1ecb s\u1ed1 kho\u1ea3ng v\u00e0i ng\u00e0n \u00b5F.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Trong c\u00e1c m\u1ea1ch ch\u1ec9nh l\u01b0u, n\u1ebfu c\u00f3 t\u1ee5 l\u1ecdc m\u00e0 kh\u00f4ng c\u00f3 t\u1ea3i ho\u1eb7c t\u1ea3i ti\u00eau th\u1ee5 m\u1ed9t c\u00f4ng xu\u1ea5t kh\u00f4ng \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00f4ng xu\u1ea5t c\u1ee7a bi\u1ebfn \u00e1p th\u00ec \u0111i\u1ec7n \u00e1p DC thu \u0111\u01b0\u1ee3c l\u00e0 DC = 1,4.AC<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>2.2 &#8211; M\u1ea1ch ch\u1ec9nh l\u01b0u nh\u00e2n 2<\/strong><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">\u0110\u1ec3 tr\u1edf th\u00e0nh m\u1ea1ch ch\u1ec9nh l\u01b0u nh\u00e2n 2 ta ph\u1ea3i d\u00f9ng hai t\u1ee5 ho\u00e1 c\u00f9ng tr\u1ecb s\u1ed1 m\u1eafc n\u1ed1i ti\u1ebfp, sau \u0111\u00f3 \u0111\u1ea5u 1 \u0111\u1ea7u c\u1ee7a \u0111i\u1ec7n \u00e1p xoau chi\u1ec1u v\u00e0o \u0111i\u1ec3m gi\u1eefa hai t\u1ee5 =&gt; ta s\u1ebd thu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p t\u0103ng g\u1ea5p 2 l\u1ea7n.<\/span><\/p>\n<figure id=\"attachment_44867\" aria-describedby=\"caption-attachment-44867\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44867 size-full\" title=\"M\u1ea1ch ch\u1ec9nh l\u01b0u nh\u00e2n 2\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-4.jpg\" alt=\"M\u1ea1ch ch\u1ec9nh l\u01b0u nh\u00e2n 2\" width=\"750\" height=\"341\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-4.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-4-300x136.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-4-510x232.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44867\" class=\"wp-caption-text\">M\u1ea1ch ch\u1ec9nh l\u01b0u nh\u00e2n 2<\/figcaption><\/figure>\n<ul>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">\u1ede m\u1ea1ch tr\u00ean, khi <strong>c\u00f4ng t\u1eafc K m\u1edf<\/strong>, m\u1ea1ch tr\u1edf v\u1ec1 d\u1ea1ng ch\u1ec9nh l\u01b0u th\u00f4ng th\u01b0\u1eddng.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Khi <strong>c\u00f4ng t\u1eafc K \u0111\u00f3ng<\/strong>, m\u1ea1ch tr\u1edf th\u00e0nh m\u1ea1ch ch\u1ec9nh l\u01b0u nh\u00e2n 2, v\u00e0 k\u1ebft qu\u1ea3 l\u00e0 ta thu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p ra t\u0103ng g\u1ea5p 2 l\u1ea7n.<\/span><\/li>\n<\/ul>\n<h1 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>3 &#8211; M\u1ea1ch \u1ed5n \u00e1p c\u1ed1 \u0111\u1ecbnh<\/strong><\/span><\/h1>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>3.1 &#8211; M\u1ea1ch \u1ed5n \u00e1p c\u1ed1 \u0111\u1ecbnh d\u00f9ng Diode Zener<\/strong><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">T\u1eeb ngu\u1ed3n 110V kh\u00f4ng c\u1ed1 \u0111\u1ecbnh th\u00f4ng qua \u0111i\u1ec7n tr\u1edf h\u1ea1n d\u00f2ng R1 v\u00e0 ghim tr\u00ean Dz 33V \u0111\u1ec3 l\u1ea5y ra m\u1ed9t \u0111i\u1ec7n \u00e1p c\u1ed1 \u0111\u1ecbnh cung c\u1ea5p cho m\u1ea1ch d\u00f2 k\u00eanh.<\/span><\/p>\n<figure id=\"attachment_44868\" aria-describedby=\"caption-attachment-44868\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44868 size-full\" title=\"M\u1ea1ch \u1ed5n \u00e1p c\u1ed1 \u0111\u1ecbnh d\u00f9ng Diode Zener\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-5.jpg\" alt=\"M\u1ea1ch \u1ed5n \u00e1p c\u1ed1 \u0111\u1ecbnh d\u00f9ng Diode Zener\" width=\"750\" height=\"341\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-5.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-5-300x136.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-5-510x232.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44868\" class=\"wp-caption-text\">M\u1ea1ch \u1ed5n \u00e1p c\u1ed1 \u0111\u1ecbnh d\u00f9ng Diode Zener<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Khi thi\u1ebft k\u1ebf m\u1ed9t m\u1ea1ch \u1ed5n \u00e1p nh\u01b0 tr\u00ean ta c\u1ea7n t\u00ednh to\u00e1n \u0111i\u1ec7n tr\u1edf h\u1ea1n d\u00f2ng sao cho d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c c\u1ef1c \u0111\u1ea1i qua Dz ph\u1ea3i nh\u1ecf h\u01a1n d\u00f2ng m\u00e0 Dz ch\u1ecbu \u0111\u01b0\u1ee3c, d\u00f2ng c\u1ef1c \u0111\u1ea1i qua Dz l\u00e0 khi d\u00f2ng qua <strong>R2 = 0<\/strong>.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Nh\u01b0 s\u01a1 \u0111\u1ed3 tr\u00ean th\u00ec d\u00f2ng c\u1ef1c \u0111\u1ea1i qua Dz b\u1eb1ng s\u1ee5t \u00e1p tr\u00ean R1 chia cho gi\u00e1 tr\u1ecb R1 , g\u1ecdi d\u00f2ng \u0111i\u1ec7n n\u00e0y l\u00e0 I1 ta c\u00f3 <\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>I1 = (110 &#8211; 33 ) \/ 7500 = 77 \/ 7500 ~ 10mA<\/strong>.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Th\u00f4ng th\u01b0\u1eddng ta n\u00ean \u0111\u1ec3 d\u00f2ng ng\u01b0\u1ee3c qua Dz\u00a0\u2264\u00a025 mA<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>3.2 &#8211; M\u1ea1ch \u1ed5n \u00e1p c\u1ed1 \u0111\u1ecbnh d\u00f9ng Transistor, IC \u1ed5n \u00e1p<\/strong><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">M\u1ea1ch \u1ed5n \u00e1p d\u00f9ng Diode Zener nh\u01b0 tr\u00ean c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 \u0111\u01a1n gi\u1ea3n nh\u01b0ng nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 cho d\u00f2ng \u0111i\u1ec7n nh\u1ecf (\u2264\u00a020mA). \u0110\u1ec3\u00a0c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p c\u1ed1 \u0111\u1ecbnh nh\u01b0ng cho d\u00f2ng \u0111i\u1ec7n m\u1ea1nh h\u01a1n nhi\u1ec1u l\u1ea7n ng\u01b0\u1eddi ta m\u1eafc th\u00eam Transistor \u0111\u1ec3 khuy\u1ebfch \u0111\u1ea1i v\u1ec1 d\u00f2ng nh\u01b0 s\u01a1 \u0111\u1ed3 d\u01b0\u1edbi \u0111\u00e2y.<\/span><\/p>\n<figure id=\"attachment_44869\" aria-describedby=\"caption-attachment-44869\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44869 size-full\" title=\"M\u1ea1ch \u1ed5n \u00e1p c\u00f3 Transistor khu\u1ebfch \u0111\u1ea1i\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-6.jpg\" alt=\"M\u1ea1ch \u1ed5n \u00e1p c\u00f3 Transistor khu\u1ebfch \u0111\u1ea1i\" width=\"750\" height=\"341\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-6.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-6-300x136.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-6-510x232.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44869\" class=\"wp-caption-text\">M\u1ea1ch \u1ed5n \u00e1p c\u00f3 Transistor khu\u1ebfch \u0111\u1ea1i<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">\u1ede m\u1ea1ch tr\u00ean \u0111i\u1ec7n \u00e1p t\u1ea1i \u0111i\u1ec3m A c\u00f3 th\u1ec3 thay \u0111\u1ed5i v\u00e0 c\u00f2n g\u1ee3n xoay chi\u1ec1u nh\u01b0ng \u0111i\u1ec7n \u00e1p t\u1ea1i \u0111i\u1ec3m B kh\u00f4ng thay \u0111\u1ed5i v\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i ph\u1eb3ng.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>Nguy\u00ean l\u00fd \u1ed5n \u00e1p:<\/strong> Th\u00f4ng qua \u0111i\u1ec7n tr\u1edf R1 v\u00e0 Dz ghim c\u1ed1 \u0111\u1ecbnh \u0111i\u1ec7n \u00e1p ch\u00e2n B c\u1ee7a Transistor Q1, gi\u1ea3 s\u1eed khi \u0111i\u1ec7n \u00e1p ch\u00e2n <\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">E \u0111\u00e8n Q1 gi\u1ea3m =&gt; khi \u0111\u00f3 \u0111i\u1ec7n \u00e1p UBE t\u0103ng =&gt; d\u00f2ng qua \u0111\u00e8n Q1 t\u0103ng =&gt; l\u00e0m \u0111i\u1ec7n \u00e1p ch\u00e2n E c\u1ee7a \u0111\u00e8n t\u0103ng v\u00e0 ng\u01b0\u1ee3c l\u1ea1i&#8230;<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">M\u1ea1ch \u1ed5n \u00e1p tr\u00ean \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u qu\u1ea3 n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t r\u1ed9ng d\u00e3i v\u00e0 ng\u01b0\u1eddi ta \u0111\u00e3 s\u1ea3n xu\u1ea5t c\u00e1c lo\u1ea1i IC h\u1ecd LA78&#8230; \u0111\u1ec3 thay th\u1ebf cho m\u1ea1ch \u1ed5n \u00e1p tr\u00ean, IC LA78&#8230; C\u00f3 s\u01a1 \u0111\u1ed3 m\u1ea1ch nh\u01b0 ph\u1ea7n m\u1ea1ch c\u00f3 m\u1ea7u xanh c\u1ee7a s\u01a1 \u0111\u1ed3 tr\u00ean.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>L\u01b0u \u00fd: <\/strong><\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">H\u1ecd IC78&#8230; ch\u1ec9 cho d\u00f2ng ti\u00eau th\u1ee5 kho\u1ea3ng 1A tr\u1edf xu\u1ed1ng, khi r\u00e1p IC trong m\u1ea1ch th\u00ec U in &gt; Uout t\u1eeb 3 \u0111\u1ebfn 5V khi \u0111\u00f3 IC m\u1edbi ph\u00e1t huy t\u00e1c d\u1ee5ng.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>3.3 &#8211; \u1ee8ng d\u1ee5ng c\u1ee7a IC \u1ed5n \u00e1p h\u1ecd 78<\/strong><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">IC \u1ed5n \u00e1p h\u1ecd 78.. \u0111\u01b0\u1ee3c d\u00f9ng r\u1ed9ng r\u00e3i trong c\u00e1c b\u1ed9 ngu\u1ed3n, nh\u01b0 B\u1ed9 ngu\u1ed3n c\u1ee7a \u0111\u1ea7u VCD, trong TV m\u00e0u, trong m\u00e1y t\u00ednh&#8230;<\/span><\/p>\n<figure id=\"attachment_44870\" aria-describedby=\"caption-attachment-44870\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44870 size-full\" title=\"\u1ee8ng d\u1ee5ng c\u1ee7a IC \u1ed5n \u00e1p LA7805 v\u00e0 LA7808 trong b\u1ed9 ngu\u1ed3n \u0111\u1ea7u VCD\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-7.jpg\" alt=\"\u1ee8ng d\u1ee5ng c\u1ee7a IC \u1ed5n \u00e1p LA7805 v\u00e0 LA7808 trong b\u1ed9 ngu\u1ed3n \u0111\u1ea7u VCD\" width=\"750\" height=\"441\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-7.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-7-300x176.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-7-510x300.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44870\" class=\"wp-caption-text\">\u1ee8ng d\u1ee5ng c\u1ee7a IC \u1ed5n \u00e1p LA7805 v\u00e0 LA7808 trong b\u1ed9 ngu\u1ed3n \u0111\u1ea7u VCD<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">4 &#8211; M\u1ea1ch \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh (c\u00f3 h\u1ed3i ti\u1ebfp)<\/span><\/h2>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>4.1 &#8211; S\u01a1 \u0111\u1ed3 kh\u1ed1i c\u1ee7a m\u1ea1ch \u1ed5n \u00e1p c\u00f3 h\u1ed3i ti\u1ebfp<\/strong><\/span><\/h3>\n<figure id=\"attachment_44871\" aria-describedby=\"caption-attachment-44871\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44871 size-full\" title=\"S\u01a1 \u0111\u1ed3 kh\u1ed1i c\u1ee7a m\u1ea1ch \u1ed5n \u00e1p c\u00f3 h\u1ed3i ti\u1ebfp\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-8.jpg\" alt=\"S\u01a1 \u0111\u1ed3 kh\u1ed1i c\u1ee7a m\u1ea1ch \u1ed5n \u00e1p c\u00f3 h\u1ed3i ti\u1ebfp\" width=\"750\" height=\"441\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-8.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-8-300x176.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-8-510x300.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44871\" class=\"wp-caption-text\">S\u01a1 \u0111\u1ed3 kh\u1ed1i c\u1ee7a m\u1ea1ch \u1ed5n \u00e1p c\u00f3 h\u1ed3i ti\u1ebfp<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>* M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a m\u1ea1ch \u1ed5n \u00e1p c\u00f3 h\u1ed3i ti\u1ebfp:<\/strong><\/span><\/p>\n<ul>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Cung c\u1ea5p \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u \u1edf \u0111\u1ea7u ra kh\u00f4ng \u0111\u1ed5i trong hai tr\u01b0\u1eddng h\u1ee3p \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o thay \u0111\u1ed5i ho\u1eb7c d\u00f2ng ti\u00eau th\u1ee5 c\u1ee7a t\u1ea3i thay \u0111\u1ed5i, tuy nhi\u00ean s\u1ef1 thay \u0111\u1ed5i n\u00e0y ph\u1ea3i c\u00f3 gi\u1edbi h\u1ea1n.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Cho \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u \u0111\u1ea7u ra c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao, gi\u1ea3m thi\u1ec3u \u0111\u01b0\u1ee3c hi\u1ec7n t\u01b0\u1ee3ng g\u1ee3n xoay chi\u1ec1u.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>* Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ch.<\/strong><\/span><\/p>\n<ul>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">M\u1ea1ch l\u1ea5y m\u1eabu s\u1ebd theo d\u00f5i \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra th\u00f4ng qua m\u1ed9t c\u1ea7u ph\u00e2n \u00e1p t\u1ea1o ra (Ulm : \u00e1p l\u1ea5y m\u1eabu)<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">M\u1ea1ch t\u1ea1o \u00e1p chu\u1ea9n =&gt; gim l\u1ea5y m\u1ed9t m\u1ee9c \u0111i\u1ec7n \u00e1p c\u1ed1 \u0111\u1ecbnh (Uc : \u00e1p chu\u1ea9n )<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">M\u1ea1ch so s\u00e1nh s\u1ebd so s\u00e1nh hai \u0111i\u1ec7n \u00e1p l\u1ea5y m\u1eabu Ulm v\u00e0 \u00e1p chu\u1ea9n Uc \u0111\u1ec3 t\u1ea1o th\u00e0nh \u0111i\u1ec7n \u00e1p \u0111i\u1ec1u khi\u1ec3n.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">M\u1ea1ch khu\u1ebfch \u0111\u1ea1i s\u1eeda sai s\u1ebd khu\u1ebfch \u0111\u1ea1i \u00e1p \u0111i\u1ec1u khi\u1ec3n, sau \u0111\u00f3 \u0111\u01b0a v\u1ec1 \u0111i\u1ec1u ch\u1ec9nh s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u00e8n c\u00f4ng xu\u1ea5t theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu \u0111i\u1ec7n \u00e1p ra t\u0103ng =&gt; th\u00f4ng qua m\u1ea1ch h\u1ed3i ti\u1ebfp \u0111i\u1ec1u ch\u1ec9nh =&gt; \u0111\u00e8n c\u00f4ng xu\u1ea5t d\u1eabn gi\u1ea3m =&gt;\u0111i\u1ec7n \u00e1p ra gi\u1ea3m xu\u1ed1ng.\u00a0 Ng\u01b0\u1ee3c l\u1ea1i n\u1ebfu \u0111i\u1ec7n \u00e1p ra gi\u1ea3m =&gt; th\u00f4ng qua m\u1ea1ch h\u1ed3i ti\u1ebfp \u0111i\u1ec1u ch\u1ec9nh =&gt; \u0111\u00e8n c\u00f4ng xu\u1ea5t l\u1ea1i d\u1eabn t\u0103ng =&gt; v\u00e0 \u0111i\u1ec7n \u00e1p ra t\u0103ng l\u00ean =&gt;&gt; k\u1ebft qu\u1ea3 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra kh\u00f4ng thay \u0111\u1ed5i.<\/span><\/li>\n<\/ul>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>4.2 &#8211; Ph\u00e2n t\u00edch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ch ngu\u1ed3n c\u00f3 h\u1ed3i ti\u1ebfp trong Ti vi \u0111en tr\u1eafng Samsung<\/strong><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">\u0110i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o c\u00f2n g\u1ee3n xoay chi\u1ec1u \u0110i\u1ec7n \u00e1p \u0111\u1ea7u ra b\u1eb1ng ph\u1eb3ng<\/span><\/p>\n<figure id=\"attachment_44872\" aria-describedby=\"caption-attachment-44872\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44872 size-full\" title=\"M\u1ea1ch \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh trong Ti vi Samsung \u0111en tr\u1eafng\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-9.jpg\" alt=\"M\u1ea1ch \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh trong Ti vi Samsung \u0111en tr\u1eafng\" width=\"750\" height=\"441\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-9.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-9-300x176.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-9-510x300.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44872\" class=\"wp-caption-text\">M\u1ea1ch \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh trong Ti vi Samsung \u0111en tr\u1eafng<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>* \u00dd ngh\u0129a c\u00e1c linh ki\u1ec7n tr\u00ean s\u01a1 \u0111\u1ed3<\/strong><\/span><\/p>\n<ul>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">T\u1ee5 2200\u00b5F l\u00e0 t\u1ee5 l\u1ecdc ngu\u1ed3n ch\u00ednh, l\u1ecdc \u0111i\u1ec7n \u00e1p sau ch\u1ec9nh l\u01b0u 18V , \u0111\u00e2y c\u0169ng l\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o c\u1ee7a m\u1ea1ch \u1ed5n \u00e1p, \u0111i\u1ec7n \u00e1p n\u00e0y c\u00f3 th\u1ec3 t\u0103ng gi\u1ea3m kho\u1ea3ng 15%.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Q1 l\u00e0 \u0111\u00e8n c\u00f4ng xu\u1ea5t ngu\u1ed3n cung c\u1ea5p d\u00f2ng \u0111i\u1ec7n ch\u00ednh cho t\u1ea3i , \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra c\u1ee7a m\u1ea1c \u1ed5n \u00e1p l\u1ea5y t\u1eeb ch\u00e2n C \u0111\u00e8n Q1 v\u00e0 c\u00f3 gi\u00e1 tr\u1ecb 12V c\u1ed1 \u0111\u1ecbnh .<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">R1 l\u00e0 tr\u1edf ph\u00e2n d\u00f2ng c\u00f3 c\u00f4ng xu\u1ea5t l\u1edbn gh\u00e1nh b\u1edbt m\u1ed9t ph\u1ea7n d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0111\u00e8n c\u00f4ng xu\u1ea5t.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">C\u1ea7u ph\u00e2n \u00e1p R5, VR1 v\u00e0 R6 t\u1ea1o ra \u00e1p l\u1ea5y m\u1eabu \u0111\u01b0a v\u00e0o ch\u00e2n B \u0111\u00e8n Q2 .<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Diode zener Dz v\u00e0 R4 t\u1ea1o m\u1ed9t \u0111i\u1ec7n \u00e1p chu\u1ea9n c\u1ed1 \u0111\u1ecbnh so v\u1edbi \u0111i\u1ec7n \u00e1p ra.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Q2 l\u00e0 \u0111\u00e8n so s\u00e1nh v\u00e0 khuy\u1ebfch \u0111\u1ea1i \u0111i\u1ec7n \u00e1p sai l\u1ec7ch =&gt; \u0111\u01b0a v\u1ec1 \u0111i\u1ec1u khi\u1ec3n s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u00e8n c\u00f4ng xu\u1ea5t Q1.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">R3 li\u00ean l\u1ea1c gi\u1eefa Q1 v\u00e0 Q2, R2 ph\u00e2n \u00e1p cho Q1<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>* Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">\u0110i\u1ec7n \u00e1p \u0111\u1ea7u ra s\u1ebd c\u00f3 xu h\u01b0\u1edbng thay \u0111\u1ed5i khi \u0110i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o thay \u0111\u1ed5i, ho\u1eb7c d\u00f2ng ti\u00eau th\u1ee5 thay \u0111\u1ed5i.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>Gi\u1ea3 s\u1eed:<\/strong> Khi \u0111i\u1ec7n \u00e1p v\u00e0o t\u0103ng =&gt; \u0111i\u1ec7n \u00e1p ra t\u0103ng =&gt; \u0111i\u1ec7n \u00e1p ch\u00e2n E \u0111\u00e8n Q2 t\u0103ng nhi\u1ec1u h\u01a1n ch\u00e2n B (Do c\u00f3 Dz ghim <\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">t\u1eeb ch\u00e2n E \u0111\u00e8n Q2 l\u00ean Ura, c\u00f2n Ulm ch\u1ec9 l\u1ea5y m\u1ed9t ph\u1ea7n Ura ) do \u0111\u00f3 UBE gi\u1ea3m =&gt; \u0111\u00e8n Q2 d\u1eabn gi\u1ea3m =&gt; \u0111\u00e8n Q1 d\u1eabn gi\u1ea3m =&gt; \u0111i\u1ec7n \u00e1p ra gi\u1ea3m xu\u1ed1ng. T\u01b0\u01a1ng t\u1ef1 khi Uv\u00e0o gi\u1ea3m, th\u00f4ng qua m\u1ea1ch \u0111i\u1ec1u ch\u1ec9nh =&gt; ta l\u1ea1i thu \u0111\u01b0\u1ee3c Ura t\u0103ng. Th\u1eddi gian \u0111i\u1ec1u ch\u1ec9nh c\u1ee7a v\u00f2ng h\u1ed3i ti\u1ebfp r\u1ea5t nhanh kho\u1ea3ng v\u00e0i \u00b5 gi\u00e2y v\u00e0 \u0111\u01b0\u1ee3c c\u00e1c t\u1ee5 l\u1ecdc \u0111\u1ea7u ra lo\u1ea1i b\u1ecf, kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u =&gt; k\u1ebft qu\u1ea3 l\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra t\u01b0\u01a1ng \u0111\u1ed1i ph\u1eb3ng.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Khi \u0111i\u1ec1u ch\u1ec9nh bi\u1ebfn tr\u1edf VR1 , \u0111i\u1ec7n \u00e1p l\u1ea5y m\u1eabu thay \u0111\u1ed5i, \u0111\u1ed9 d\u1eabn \u0111\u00e8n Q2 thay \u0111\u1ed5i , \u0111\u1ed9 d\u1eabn \u0111\u00e8n Q1 thay \u0111\u1ed5i =&gt; k\u1ebft qu\u1ea3 l\u00e0 \u0111i\u1ec7n \u00e1p ra thay \u0111\u1ed5i, VR1 d\u00f9ng \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p ra theo \u00fd mu\u1ed1n.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\"><strong>4.3 &#8211; M\u1ea1ch ngu\u1ed3n TV n\u1ed9i \u0111\u1ecba Nh\u1eadt<\/strong><\/span><\/h3>\n<figure id=\"attachment_44873\" aria-describedby=\"caption-attachment-44873\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-44873 size-full\" title=\"S\u01a1 \u0111\u1ed3 m\u1ea1ch ngu\u1ed3n \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh trong Ti vi m\u00e0u n\u1ed9i \u0111\u1ecba Nh\u1eadt\" src=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-10.jpg\" alt=\"S\u01a1 \u0111\u1ed3 m\u1ea1ch ngu\u1ed3n \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh trong Ti vi m\u00e0u n\u1ed9i \u0111\u1ecba Nh\u1eadt\" width=\"750\" height=\"441\" srcset=\"https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-10.jpg 750w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-10-300x176.jpg 300w, https:\/\/hocvienit.vn\/wp-content\/uploads\/2018\/07\/co-ban-ve-mach-chinh-luu-va-on-ap-10-510x300.jpg 510w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-44873\" class=\"wp-caption-text\">S\u01a1 \u0111\u1ed3 m\u1ea1ch ngu\u1ed3n \u1ed5n \u00e1p tuy\u1ebfn t\u00ednh trong Ti vi m\u00e0u n\u1ed9i \u0111\u1ecba Nh\u1eadt<\/figcaption><\/figure>\n<ul>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">C1 l\u00e0 t\u1ee5 l\u1ecdc ngu\u1ed3n ch\u00ednh sau c\u1ea7u Diode ch\u1ec9nh l\u01b0u.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">C2 l\u00e0 t\u1ee5 l\u1ecdc \u0111\u1ea7u ra c\u1ee7a m\u1ea1ch ngu\u1ed3n tuy\u1ebfn t\u00ednh.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">C\u1ea7u ph\u00e2n \u00e1p R4, VR1, R5 t\u1ea1o ra \u0111i\u1ec7n \u00e1p l\u1ea5y m\u1eabu ULM<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">R2 v\u00e0 Dz t\u1ea1o ra \u00e1p chu\u1ea9n Uc<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">R3 li\u00ean l\u1ea1c gi\u1eefa Q3 v\u00e0 Q2, R1 \u0111\u1ecbnh thi\u00ean cho \u0111\u00e8n c\u00f4ng xu\u1ea5t Q1<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">R6 l\u00e0 \u0111i\u1ec7n tr\u1edf ph\u00e2n d\u00f2ng, l\u00e0 \u0111i\u1ec7n tr\u1edf c\u00f4ng xu\u1ea5t l\u1edbn .<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Q3 l\u00e0 \u0111\u00e8n so s\u00e1nh v\u00e0 khu\u1ebfch \u0111\u1ea1i \u00e1p d\u00f2 sai<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Khu\u1ebfch \u0111\u1ea1i \u0111i\u1ec7n \u00e1p d\u00f2 sai<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">Q1 \u0111\u00e8n c\u00f4ng xu\u1ea5t ngu\u1ed3<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: tahoma, arial, helvetica, sans-serif;\">=&gt; Ngu\u1ed3n l\u00e0m vi\u1ec7c trong d\u1ea3i \u0111i\u1ec7n \u00e1p v\u00e0o c\u00f3 th\u1ec3 thay \u0111\u1ed5i 10%, \u0111i\u1ec7n \u00e1p ra lu\u00f4n lu\u00f4n c\u1ed1 \u0111\u1ecbnh.<\/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: justify;\"><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>Trong c\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u1eed c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb, ch\u00fang s\u1eed d\u1ee5ng ngu\u1ed3n m\u1ed9t chi\u1ec1u DC \u1edf c\u00e1c m\u1ee9c \u0111i\u1ec7n \u00e1p kh\u00e1c nhau, nh\u01b0ng \u1edf ngo\u00e0i z\u1eafc c\u1eafm c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb n\u00e0y l\u1ea1i c\u1eafm tr\u1ef1c ti\u1ebfp v\u00e0o ngu\u1ed3n \u0111i\u1ec7n AC 220V 50Hz. Sau \u0111\u00e2y, h\u00e3y c\u00f9ng HOCVIENiT.vn t\u00ecm hi\u1ec3u v\u1ec1 c\u01a1 b\u1ea3n v\u1ec1 m\u1ea1ch ch\u1ec9nh l\u01b0u v\u00e0 \u1ed5n \u00e1p.<\/p>\n","protected":false},"author":95,"featured_media":12049,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96,94],"tags":[682,683],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/1577"}],"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=1577"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/1577\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/12049"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}