{"id":2419,"date":"2018-07-12T01:51:32","date_gmt":"2018-07-12T01:51:32","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=2419"},"modified":"2024-07-03T17:03:44","modified_gmt":"2024-07-03T10:03:44","slug":"dien-dan-truyen-transconductance-cua-ifet-va-dimosfet","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=2419","title":{"rendered":"\u0110i\u1ec7n d\u1eabn truy\u1ec1n (Transconductance) c\u1ee7a IFET v\u00e0 Dimosfet"},"content":{"rendered":"

\u0110i\u1ec7n d\u1eabn truy\u1ec1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c suy ra t\u1eeb \u0111\u1eb7c tuy\u1ebfn truy\u1ec1n, \u0111\u00f3 ch\u00ednh l\u00e0 \u0111\u1ed9 d\u1ed1c c\u1ee7a ti\u1ebfp tuy\u1ebfn v\u1edbi \u0111\u1eb7c tuy\u1ebfn truy\u1ec1n t\u1ea1i \u0111i\u1ec3m \u0111i\u1ec1u h\u00e0nh Q.\u00a0<\/span>C\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u1edf BJT, m\u1ed9t c\u00e1ch t\u1ed5ng qu\u00e1t ng\u01b0\u1eddi ta \u0111\u1ecbnh ngh\u0129a \u0111i\u1ec7n d\u1eabn truy\u1ec1n c\u1ee7a FET v\u00e0 Dimosfet l\u00e0 t\u1ec9 s\u1ed1:<\/span><\/p>\n

\"\"<\/span><\/p>\n

Trong \u0111\u00f3: gm<\/span>: l\u00e0 \u0111i\u1ec7n d\u1eabn truy\u1ec1n c\u1ee7a JFET hay DE-MOSFET v\u1edbi t\u00edn hi\u1ec7u nh\u1ecf<\/span><\/p>\n

gmo<\/span>: l\u00e0 gm<\/span>\u00a0khi VGS<\/span>= 0V<\/span><\/p>\n

VGS<\/span>: \u0110i\u1ec7n th\u1ebf ph\u00e2n c\u1ef1c c\u1ed5ng – ngu\u1ed3n<\/span><\/p>\n

VGS(off)<\/span>: \u0110i\u1ec7n th\u1ebf ph\u00e2n c\u1ef1c c\u1ed5ng – ngu\u1ed3n l\u00e0m JFET hay DE-MOSFET ng\u01b0ng.<\/span><\/p>\n

<\/span>\"\"Ph\u01b0\u01a1ng tr\u00ecnh tr\u00ean cho ta th\u1ea5y s\u1ef1 li\u00ean h\u1ec7 gi\u1eefa \u0111i\u1ec7n d\u1eabn truy\u1ec1n gm<\/span>\u00a0v\u1edbi d\u00f2ng \u0111i\u1ec7n tho\u00e1t ID<\/span>\u00a0t\u1ea1i \u0111i\u1ec3m \u0111i\u1ec1u h\u00e0nh Q. gmo<\/span>\u00a0\u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh t\u1eeb c\u00e1c th\u00f4ng s\u1ed1 IDSS<\/span>\u00a0v\u00e0 VGS(off)<\/span>\u00a0do nh\u00e0 s\u1ea3n xu\u1ea5t cung c\u1ea5p.<\/span><\/p>\n

Tr\u00ean \u0111\u00e2y HOCVIENiT.vn<\/a> \u0111\u00e3 gi\u1edbi thi\u1ec7u c\u00f4ng th\u1ee9c t\u1ed5ng qu\u00e1t c\u1ee7a \u0111i\u1ec7n d\u1eabn truy\u1ec1n.<\/p>\n

 <\/p>\n

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

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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

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

\u0110i\u1ec7n d\u1eabn truy\u1ec1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c suy ra t\u1eeb \u0111\u1eb7c tuy\u1ebfn truy\u1ec1n, \u0111\u00f3 ch\u00ednh l\u00e0 \u0111\u1ed9 d\u1ed1c c\u1ee7a ti\u1ebfp tuy\u1ebfn v\u1edbi \u0111\u1eb7c tuy\u1ebfn truy\u1ec1n t\u1ea1i \u0111i\u1ec3m \u0111i\u1ec1u h\u00e0nh Q. C\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u1edf BJT, m\u1ed9t c\u00e1ch t\u1ed5ng qu\u00e1t ng\u01b0\u1eddi ta \u0111\u1ecbnh ngh\u0129a \u0111i\u1ec7n d\u1eabn truy\u1ec1n c\u1ee7a FET v\u00e0 Dimosfet l\u00e0 t\u1ec9 s\u1ed1:<\/p>\n","protected":false},"author":95,"featured_media":2420,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96,94],"tags":[498],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/2419"}],"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=2419"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/2419\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/2420"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}