{"id":677767,"date":"2024-09-15T16:20:52","date_gmt":"2024-09-15T15:20:52","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=677767"},"modified":"2024-09-15T16:20:52","modified_gmt":"2024-09-15T15:20:52","slug":"nhung-yeu-to-anh-huong-den-kha-nang-chong-nhiet-trong-dien-tu","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/nhung-yeu-to-anh-huong-den-kha-nang-chong-nhiet-trong-dien-tu\/","title":{"rendered":"Nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec7t trong \u0111i\u1ec7n t\u1eed"},"content":{"rendered":"<p class=\"sidekick\">Nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec7t trong \u0111i\u1ec7n t\u1eed: T\u00ecm hi\u1ec3u c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 v\u1eadt li\u1ec7u, thi\u1ebft k\u1ebf v\u00e0 qu\u00e1 tr\u00ecnh l\u00e0m m\u00e1t \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t nhi\u1ec7t.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/nhung_yeu_to_anh_huong_den_kha_nang_chong_nhiet_trong_dien_tu.png\" alt=\"Nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec7t trong \u0111i\u1ec7n t\u1eed\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec7t trong \u0111i\u1ec7n t\u1eed<\/h2>\n<p>Kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec7t (hay kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t) l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong thi\u1ebft k\u1ebf v\u00e0 v\u1eadn h\u00e0nh c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed. Khi c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ho\u1ea1t \u0111\u1ed9ng, ch\u00fang sinh ra nhi\u1ec7t \u0111\u1ed9, v\u00e0 vi\u1ec7c qu\u1ea3n l\u00fd nhi\u1ec7t \u0111\u1ed9 n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 tr\u00e1nh h\u1ecfng h\u00f3c v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec7t trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed.<\/p>\n<h2>1. Ch\u1ea5t li\u1ec7u<\/h2>\n<ul>\n<li><b>Ch\u1ea5t li\u1ec7u v\u1ecf b\u1ecdc:<\/b> C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 nh\u00f4m v\u00e0 \u0111\u1ed3ng c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t cao v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng t\u1ea3n nhi\u1ec7t.<\/li>\n<li><b>Ch\u1ea5t li\u1ec7u bo m\u1ea1ch:<\/b> C\u00e1c bo m\u1ea1ch in (PCB) th\u01b0\u1eddng s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u nh\u1ef1a epoxy v\u00e0 s\u1ee3i th\u1ee7y tinh, c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t k\u00e9m h\u01a1n so v\u1edbi kim lo\u1ea1i, do \u0111\u00f3 c\u1ea7n c\u00f3 th\u00eam gi\u1ea3i ph\u00e1p t\u1ea3n nhi\u1ec7t.<\/li>\n<\/ul>\n<h2>2. Thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac<\/h2>\n<p>Thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac c\u1ee7a thi\u1ebft b\u1ecb c\u0169ng \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng. M\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 c\u1ea5u tr\u00fac bao g\u1ed3m:<\/p>\n<ul>\n<li><b>K\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng:<\/b> K\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng c\u1ee7a h\u1ec7 th\u1ed1ng t\u1ea3n nhi\u1ec7t v\u00e0 bo m\u1ea1ch c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t.<\/li>\n<li><b>Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n:<\/b> Kho\u1ea3ng c\u00e1ch h\u1ee3p l\u00fd gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n tr\u00ean bo m\u1ea1ch gi\u00fap c\u1ea3i thi\u1ec7n vi\u1ec7c lu\u00e2n chuy\u1ec3n kh\u00f4ng kh\u00ed v\u00e0 t\u1ea3n nhi\u1ec7t.<\/li>\n<\/ul>\n<h2>3. H\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t<\/h2>\n<p>H\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, bao g\u1ed3m:<\/p>\n<ol>\n<li><b>Qu\u1ea1t l\u00e0m m\u00e1t:<\/b> Gi\u00fap t\u0103ng c\u01b0\u1eddng lu\u1ed3ng kh\u00f4ng kh\u00ed \u0111\u1ec3 t\u1ea3n nhi\u1ec7t nhanh ch\u00f3ng.<\/li>\n<li><b>T\u1ea5m t\u1ea3n nhi\u1ec7t:<\/b> T\u1ea5m d\u1eabn nhi\u1ec7t gi\u00fap ph\u00e2n t\u00e1n nhi\u1ec7t \u0111\u1ed9 ra ngo\u00e0i m\u00f4i tr\u01b0\u1eddng.<\/li>\n<li><b>H\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t b\u1eb1ng ch\u1ea5t l\u1ecfng:<\/b> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb y\u00eau c\u1ea7u t\u1ea3n nhi\u1ec7t cao.<\/li>\n<\/ol>\n<h2>4. \u0110i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng<\/h2>\n<p>\u0110i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng xung quanh c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed:<\/p>\n<ul>\n<li><b>Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng:<\/b> Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng cao l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t c\u1ee7a thi\u1ebft b\u1ecb.<\/li>\n<li><b>\u0110\u1ed9 \u1ea9m:<\/b> \u0110\u1ed9 \u1ea9m cao c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 t\u1ea3n nhi\u1ec7t v\u00e0 g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 \u0103n m\u00f2n.<\/li>\n<\/ul>\n<h2>5. C\u00f4ng su\u1ea5t ti\u00eau th\u1ee5<\/h2>\n<p>C\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 c\u1ee7a thi\u1ebft b\u1ecb c\u00e0ng cao th\u00ec l\u01b0\u1ee3ng nhi\u1ec7t sinh ra c\u00e0ng nhi\u1ec1u, \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng t\u1ea3n nhi\u1ec7t ph\u1ea3i hi\u1ec7u qu\u1ea3 h\u01a1n:<\/p>\n<p>\\(P = I^2 * R\\)<\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<ol>\n<li>\\(P\\) l\u00e0 c\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 (Watt)<\/li>\n<li>\\(I\\) l\u00e0 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua thi\u1ebft b\u1ecb (Ampere)<\/li>\n<li>\\(R\\) l\u00e0 \u0111i\u1ec7n tr\u1edf c\u1ee7a thi\u1ebft b\u1ecb (Ohm)<\/li>\n<\/ol>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>N\u1eafm v\u1eefng c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec7t s\u1ebd gi\u00fap k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 thi\u1ebft k\u1ebf ch\u1ecdn \u0111\u01b0\u1ee3c c\u00e1c gi\u1ea3i ph\u00e1p t\u1ea3n nhi\u1ec7t ph\u00f9 h\u1ee3p, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed. Kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec7t t\u1ed1i \u01b0u kh\u00f4ng ch\u1ec9 gi\u00fap n\u00e2ng cao hi\u1ec7u su\u1ea5t m\u00e0 c\u00f2n k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec7t trong \u0111i\u1ec7n t\u1eed: T\u00ecm hi\u1ec3u c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 v\u1eadt li\u1ec7u, thi\u1ebft k\u1ebf v\u00e0 qu\u00e1 tr\u00ecnh l\u00e0m m\u00e1t \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t nhi\u1ec7t.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng 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