{"id":2340,"date":"2018-07-11T01:33:59","date_gmt":"2018-07-11T01:33:59","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=2340"},"modified":"2025-01-24T15:16:40","modified_gmt":"2025-01-24T08:16:40","slug":"phan-cuc-dinh-thien-cho-transistor","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=2340","title":{"rendered":"Ph\u00e2n c\u1ef1c – \u0110\u1ecbnh thi\u00ean cho Transistor"},"content":{"rendered":"

\u0110\u1ec3 s\u1eed d\u1ee5ng Transistor trong m\u1ea1ch ta c\u1ea7n ph\u1ea3i c\u1ea5p\u00a0cho n\u00f3 m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n, tu\u1ef3 theo m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng m\u00e0 ngu\u1ed3n \u0111i\u1ec7n \u0111\u01b0\u1ee3c c\u1ea5p\u00a0tr\u1ef1c ti\u1ebfp v\u00e0o Transistor hay \u0111i qua \u0111i\u1ec7n tr\u1edf, cu\u1ed9n d\u00e2y v v\u2026 ngu\u1ed3n\u00a0\u0111i\u1ec7n Vcc cho Transistor \u0111\u01b0\u1ee3c quy \u01b0\u1edbc l\u00e0 ngu\u1ed3n c\u1ea5p cho c\u1ef1c CE.<\/span><\/p>\n

\"Ph\u00e2n
<\/span> Ph\u00e2n c\u1ef1c – \u0110\u1ecbnh thi\u00ean cho Transistor<\/span><\/figcaption><\/figure>\n

Ta th\u1ea5y r\u1eb1ng:<\/strong> N\u1ebfu Transistor l\u00e0 ng\u01b0\u1ee3c NPN th\u00ec Vcc ph\u1ea3i l\u00e0 ngu\u1ed3n d\u01b0\u01a1ng (+), n\u1ebfu Transistor l\u00e0 thu\u1eadn PNP th\u00ec Vcc l\u00e0 ngu\u1ed3n \u00e2m (-)<\/span><\/p>\n

\u0110\u1ecbnh thi\u00ean (ph\u00e2n c\u1ef1c) cho Transistor<\/span><\/h2>\n

* \u0110\u1ecbnh thi\u00ean:<\/strong> l\u00e0 c\u1ea5p m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n v\u00e0o ch\u00e2n B (qua tr\u1edf \u0111\u1ecbnh thi\u00ean) \u0111\u1ec3 \u0111\u1eb7t Transistor v\u00e0o tr\u1ea1ng th\u00e1i s\u1eb5n s\u00e0ng ho\u1ea1t \u0111\u1ed9ng, s\u1eb5n s\u00e0ng khu\u1ebfch \u0111\u1ea1i c\u00e1c t\u00edn hi\u1ec7u cho d\u00f9 r\u1ea5t nh\u1ecf.<\/span><\/p>\n

\"\u0110\u1ecbnh
<\/span> \u0110\u1ecbnh thi\u00ean (ph\u00e2n c\u1ef1c) cho Transistor<\/span><\/figcaption><\/figure>\n

* T\u1ea1i sao ph\u1ea3i \u0111\u1ecbnh thi\u00ean cho Transistor n\u00f3 m\u1edbi s\u1eb5n s\u00e0ng ho\u1ea1t \u0111\u1ed9ng?<\/strong><\/span><\/p>\n

\u0110\u1ec3 hi\u1ebfu \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y ta h\u00e3y x\u00e9t hai s\u01a1 \u0111\u1ed3 tr\u00ean:<\/span><\/p>\n

\u1ede tr\u00ean l\u00e0 hai m\u1ea1ch s\u1eed d\u1ee5ng transistor \u0111\u1ec3 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u, m\u1ed9t m\u1ea1ch ch\u00e2n B kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh thi\u00ean v\u00e0 m\u1ed9t m\u1ea1ch ch\u00e2n B \u0111\u01b0\u1ee3c \u0111\u1ecbnh thi\u00ean th\u00f4ng qua R\u0111t. C\u00e1c ngu\u1ed3n t\u00edn hi\u1ec7u \u0111\u01b0a v\u00e0o khu\u1ebfch \u0111\u1ea1i th\u01b0\u1eddng c\u00f3 bi\u00ean \u0111\u1ed9 r\u1ea5t nh\u1ecf ( t\u1eeb 0,05V \u0111\u1ebfn 0,5V ) khi \u0111\u01b0a v\u00e0o ch\u00e2n B(\u0111\u00e8n ch\u01b0a c\u00f3 \u0111\u1ecbnh thi\u00ean) c\u00e1c t\u00edn hi\u1ec7u n\u00e0y kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 t\u1ea1o ra d\u00f2ng IBE (\u0111\u1eb7c \u0111i\u1ec3m m\u1ed1i P-N ph\u1ea3i c\u00f3 0,6V m\u1edbi c\u00f3 d\u00f2ng ch\u1ea1y qua) => v\u00ec v\u1eady c\u0169ng kh\u00f4ng c\u00f3 d\u00f2ng ICE => s\u1ee5t \u00e1p tr\u00ean Rg = 0V v\u00e0 \u0111i\u1ec7n \u00e1p ra ch\u00e2n C = Vcc.<\/span><\/p>\n

\u1ede s\u01a1 \u0111\u1ed3 th\u1ee9 2, Transistor c\u00f3 R\u0111t \u0111\u1ecbnh thi\u00ean => c\u00f3 d\u00f2ng IBE, khi \u0111\u01b0a t\u00edn hi\u1ec7u nh\u1ecf v\u00e0o ch\u00e2n B => l\u00e0m cho d\u00f2ng IBE t\u0103ng ho\u1eb7c gi\u1ea3m => d\u00f2ng ICE c\u0169ng t\u0103ng ho\u1eb7c gi\u1ea3m , s\u1ee5t \u00e1p tr\u00ean Rg c\u0169ng thay \u0111\u1ed5i => k\u1ebft qu\u1ea3 \u0111\u1ea7u ra ta thu \u0111\u01b0\u1ee3c m\u1ed9t t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 \u0111\u1ea7u v\u00e0o nh\u01b0ng c\u00f3 bi\u00ean \u0111\u1ed9 l\u1edbn h\u01a1n.<\/span><\/p>\n

=> K\u1ebft lu\u1eadn:<\/strong> \u0110\u1ecbnh thi\u00ean (hay ph\u00e2n c\u1ef1c) ngh\u0129a l\u00e0 t\u1ea1o m\u1ed9t d\u00f2ng \u0111i\u1ec7n IBE ban \u0111\u1ea7u, m\u1ed9t s\u1ee5t \u00e1p tr\u00ean Rg ban \u0111\u1ea7u \u0111\u1ec3 khi c\u00f3 m\u1ed9t ngu\u1ed3n t\u00edn hi\u1ec7u y\u1ebfu \u0111i v\u00e0o c\u1ef1c B, d\u00f2ng IBE s\u1ebd t\u0103ng ho\u1eb7c gi\u1ea3m => d\u00f2ng ICE c\u0169ng t\u0103ng ho\u1eb7c gi\u1ea3m => d\u1eabn \u0111\u1ebfn s\u1ee5t \u00e1p tr\u00ean Rg c\u0169ng t\u0103ng ho\u1eb7c gi\u1ea3m => v\u00e0 s\u1ee5t \u00e1p n\u00e0y ch\u00ednh l\u00e0 t\u00edn hi\u1ec7u ta c\u1ea7n l\u1ea5y ra.<\/span><\/p>\n

M\u1ed9t s\u1ed1 m\u1ea1ch \u0111\u1ecbnh thi\u00ean kh\u00e1c<\/span><\/h2>\n

* M\u1ea1ch \u0111\u1ecbnh thi\u00ean d\u00f9ng hai ngu\u1ed3n \u0111i\u1ec7n kh\u00e1c nhau<\/strong><\/span><\/p>\n

\"M\u1ea1ch
<\/span> M\u1ea1ch \u0111\u1ecbnh thi\u00ean d\u00f9ng hai ngu\u1ed3n \u0111i\u1ec7n kh\u00e1c nhau<\/span><\/figcaption><\/figure>\n

* M\u1ea1ch \u0111\u1ecbnh thi\u00ean c\u00f3 \u0111i\u1ec7n tr\u1edf ph\u00e2n \u00e1p<\/strong><\/span><\/p>\n

\u0110\u1ec3 c\u00f3 th\u1ec3 khu\u1ebfch \u0111\u1ea1i \u0111\u01b0\u1ee3c nhi\u1ec1u ngu\u1ed3n t\u00edn hi\u1ec7u m\u1ea1nh y\u1ebfu kh\u00e1c nhau, th\u00ec m\u1ea1ch \u0111\u1ecbnh thi\u00ean th\u01b0\u1eddng s\u1eed d\u1ee5ng th\u00eam \u0111i\u1ec7n tr\u1edf ph\u00e2n \u00e1p Rpa \u0111\u1ea5u t\u1eeb B xu\u1ed1ng Mass.<\/span><\/p>\n

\"M\u1ea1ch
<\/span> M\u1ea1ch \u0111\u1ecbnh thi\u00ean c\u00f3 \u0111i\u1ec7n tr\u1edf ph\u00e2n \u00e1p<\/span><\/figcaption><\/figure>\n

* M\u1ea1ch \u0111\u1ecbnh thi\u00ean c\u00f3 h\u1ed3i ti\u1ebfp<\/strong><\/span><\/p>\n

L\u00e0 m\u1ea1ch c\u00f3 \u0111i\u1ec7n tr\u1edf \u0111\u1ecbnh thi\u00ean \u0111\u1ea5u t\u1eeb \u0111\u1ea7u ra (c\u1ef1c C ) \u0111\u1ebfn \u0111\u1ea7u v\u00e0o ( c\u1ef1c B) m\u1ea1ch n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng t\u0103ng \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cho m\u1ea1ch khu\u1ebfch \u0111\u1ea1i khi ho\u1ea1t \u0111\u1ed9ng.<\/span><\/p>\n

\"M\u1ea1ch
<\/span> M\u1ea1ch \u0111\u1ecbnh thi\u00ean c\u00f3 h\u1ed3i ti\u1ebfp<\/span><\/figcaption><\/figure>\n

M\u1ecdi chi ti\u1ebft xin vui l\u00f2ng li\u00ean h\u1ec7:<\/i><\/span><\/p>\n

C\u00d4NG TY C\u1ed4 PH\u1ea6N H\u1eccC VI\u1ec6N IT<\/strong><\/span><\/p>\n

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\n<\/i><\/p>\n

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><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u0110\u1ec3 s\u1eed d\u1ee5ng Transistor trong m\u1ea1ch ta c\u1ea7n ph\u1ea3i c\u1ea5p cho n\u00f3 m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n, tu\u1ef3 theo m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng m\u00e0 ngu\u1ed3n \u0111i\u1ec7n \u0111\u01b0\u1ee3c c\u1ea5p tr\u1ef1c ti\u1ebfp v\u00e0o Transistor hay \u0111i qua \u0111i\u1ec7n tr\u1edf, cu\u1ed9n d\u00e2y v v\u2026 ngu\u1ed3n \u0111i\u1ec7n Vcc cho Transistor \u0111\u01b0\u1ee3c quy \u01b0\u1edbc l\u00e0 ngu\u1ed3n c\u1ea5p cho c\u1ef1c CE. C\u00f9ng t\u00ecm hi\u1ec3u ph\u00e2n c\u1ef1c – \u0111\u1ecbnh thi\u00ean cho Transistor d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n","protected":false},"author":95,"featured_media":12307,"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\/2340"}],"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=2340"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/2340\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/12307"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}