{"id":26489,"date":"2022-09-14T17:33:25","date_gmt":"2022-09-14T10:33:25","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=26489"},"modified":"2024-07-02T01:52:58","modified_gmt":"2024-07-01T18:52:58","slug":"tim-hieu-mach-on-ap-dung-diode-zener","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=26489","title":{"rendered":"T\u00ecm hi\u1ec3u m\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener"},"content":{"rendered":"

Ti\u1ebfp n\u1ed1i c\u00e1c b\u00e0i vi\u1ebft v\u1ec1 diode zener<\/strong><\/a>, trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd c\u00f9ng H\u1ecdc vi\u1ec7n iT.vn t\u00ecm hi\u1ec3u m\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener<\/strong>.<\/span><\/p>\n

\"T\u00ecm
T\u00ecm hi\u1ec3u m\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener<\/span><\/figcaption><\/figure>\n

Xem th\u00eam:\u00a0Diode zener l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 diode zener<\/a><\/span><\/p>\n

1. M\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener c\u00f4ng su\u1ea5t nh\u1ecf<\/strong><\/span><\/h2>\n

Ta c\u00f3 th\u1ec3 x\u00e9t v\u00ed d\u1ee5 m\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener t\u1ea1o \u00e1p 33V c\u1ed1 \u0111\u1ecbnh nh\u01b0 h\u00ecnh b\u00ean d\u01b0\u1edbi.<\/span><\/p>\n

\"M\u1ea1ch
M\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener t\u1ea1o \u00e1p 33V c\u1ed1 \u0111\u1ecbnh<\/span><\/figcaption><\/figure>\n

T\u1eeb m\u1ea1ch tr\u00ean ta th\u1ea5y, b\u1eaft \u0111\u1ea7u t\u1eeb ngu\u1ed3n 110V \u0111i qua \u0111i\u1ec7n tr\u1edf h\u1ea1n d\u00f2ng R1<\/sub> v\u00e0 diode zener 33V \u0111\u1ec3 cho ra m\u1ed9t \u0111i\u1ec7n \u00e1p c\u1ed1 \u0111\u1ecbnh 33V.<\/span><\/p>\n

Ta c\u1ea7n t\u00ednh to\u00e1n \u0111i\u1ec7n tr\u1edf h\u1ea1n d\u00f2ng (R1<\/sub>) sao cho d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c c\u1ef1c \u0111\u1ea1i qua diode zener ph\u1ea3i nh\u1ecf h\u01a1n d\u00f2ng (25mA) m\u00e0 diode zener ch\u1ecbu \u0111\u01b0\u1ee3c. Trong \u0111\u00f3, d\u00f2ng c\u1ef1c \u0111\u1ea1i qua diode zener l\u00e0 khi d\u00f2ng qua R2<\/sub>=0.<\/span><\/p>\n

L\u01b0u \u00fd: \u0110\u1ec3 tr\u00e1nh \u0111i\u1ed1t zener b\u1ecb h\u1ecfng do qu\u00e1 nhi\u1ec7t, ta n\u00ean \u0111\u1ec3 d\u00f2ng ng\u01b0\u1ee3c qua diode nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng 25 mA.<\/span><\/i><\/span><\/p>\n

K\u1ebft lu\u1eadn:<\/strong> M\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener r\u1ea5t \u0111\u01a1n gi\u1ea3n nh\u01b0ng cho d\u00f2ng \u0111i\u1ec7n l\u1ea1i nh\u1ecf.<\/span><\/p>\n

2. M\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener c\u00f4ng su\u1ea5t l\u1edbn<\/span><\/strong><\/h2>\n

\u0110\u1ec3 kh\u1eafc ph\u1ee5c nh\u01b0\u1ee3c \u0111i\u1ec3m cho d\u00f2ng \u0111i\u1ec7n nh\u1ecf c\u1ee7a m\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener c\u00f4ng su\u1ea5t nh\u1ecf, ta m\u1eafc th\u00eam transistor cho m\u1ea1ch \u0111\u1ec3 t\u0103ng \u0111i\u1ec7n \u00e1p.<\/span><\/p>\n

Ta c\u00f3 th\u1ec3 x\u00e9t v\u00ed d\u1ee5 m\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener c\u00f4ng su\u1ea5t l\u1edbn nh\u01b0 h\u00ecnh b\u00ean d\u01b0\u1edbi.<\/span><\/p>\n

\"M\u1ea1ch
M\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener c\u00f4ng su\u1ea5t l\u1edbn<\/span><\/figcaption><\/figure>\n

T\u1eeb m\u1ea1ch tr\u00ean ta th\u1ea5y, d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0111i\u1ec7n tr\u1edf R1<\/sub> v\u00e0 \u0111i\u1ed1t zener D1<\/sub> c\u1ed1 \u0111\u1ecbnh \u0111i\u1ec7n \u00e1p ch\u00e2n B c\u1ee7a Transistor Q1<\/sub>. Khi \u0111\u00f3, gi\u1ea3 s\u1eed \u0111i\u1ec7n \u00e1p ch\u00e2n E \u0111\u00e8n Q1<\/sub> gi\u1ea3m th\u00ec \u0111i\u1ec7n \u00e1p UBE<\/sub> t\u0103ng, d\u1eabn \u0111\u1ebfn d\u00f2ng Q1<\/sub> t\u0103ng v\u00e0 l\u00e0m \u0111i\u1ec7n \u00e1p ch\u00e2n E t\u0103ng. Ta c\u0169ng c\u00f3 th\u1ec3 hi\u1ec3u nguy\u00ean l\u00fd n\u00e0y theo chi\u1ec1u ng\u01b0\u1ee3c l\u1ea1i.<\/span><\/p>\n

Tr\u00ean \u0111\u00e2y l\u00e0 chia s\u1ebb c\u1ee7a H\u1ecdc vi\u1ec7n iT.vn v\u1ec1 m\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener. Hy v\u1ecdng nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y c\u00f3 th\u1ec3 gi\u00fap \u00edch cho b\u1ea1n trong qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp v\u00e0 l\u00e0m vi\u1ec7c. N\u1ebfu c\u00f3 b\u1ea5t c\u1ee9 th\u1eafc m\u1eafc n\u00e0o th\u00ec h\u00e3y \u0111\u1ec3 l\u1ea1i b\u00ecnh lu\u1eadn ngay d\u01b0\u1edbi b\u00e0i vi\u1ebft n\u00e0y ho\u1eb7c inbox tr\u1ef1c ti\u1ebfp cho HOCVIENiT.vn \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i \u0111\u00e1p t\u1ed1t nh\u1ea5t. Ch\u00fac b\u1ea1n th\u00e0nh c\u00f4ng!<\/span><\/p>\n

M\u1ecdi chi ti\u1ebft xin vui l\u00f2ng li\u00ean h\u1ec7:
\n<\/i>C\u00d4NG TY C\u1ed4 PH\u1ea6N H\u1eccC VI\u1ec6N IT
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\nH\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":"

Ti\u1ebfp n\u1ed1i c\u00e1c b\u00e0i vi\u1ebft v\u1ec1 diode zener, trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd c\u00f9ng H\u1ecdc vi\u1ec7n iT.vn t\u00ecm hi\u1ec3u m\u1ea1ch \u1ed5n \u00e1p d\u00f9ng diode zener.<\/p>\n","protected":false},"author":95,"featured_media":26490,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[95,94],"tags":[248],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/26489"}],"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=26489"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/26489\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/26490"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}