{"id":43490,"date":"2024-07-12T16:32:46","date_gmt":"2024-07-12T09:32:46","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=43490"},"modified":"2024-07-12T16:32:46","modified_gmt":"2024-07-12T09:32:46","slug":"tim-hieu-chi-tiet-ve-mach-den-led-usb-cho-may-tinh","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=43490","title":{"rendered":"T\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 m\u1ea1ch \u0111\u00e8n LED USB cho m\u00e1y t\u00ednh"},"content":{"rendered":"

M\u1ea1ch \u0111\u00e8n LED USB c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m ngu\u1ed3n s\u00e1ng khi m\u1ea5t \u0111i\u1ec7n cho m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch ch\u1ebf t\u1ea1o m\u1ea1ch \u0111\u00e8n LED USB chi ti\u1ebft.<\/span><\/p>\n

\"T\u00ecm
T\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 m\u1ea1ch \u0111\u00e8n LED USB cho m\u00e1y t\u00ednh<\/figcaption><\/figure>\n

Chu\u1ea9n b\u1ecb<\/span><\/h2>\n

\u0110\u1ec3 ch\u1ebf t\u1ea1o m\u1ea1ch \u0111\u00e8n LED USB, b\u1ea1n c\u1ea7n chu\u1ea9n b\u1ecb c\u00e1c linh ki\u1ec7n:<\/span><\/p>\n

    \n
  • Transistor Q1 (NPN):<\/b> Transistor \u0111\u00f3ng vai tr\u00f2 khu\u1ebfch \u0111\u1ea1i d\u00f2ng \u0111i\u1ec7n t\u1eeb c\u1ed5ng USB \u0111\u1ec3 cung c\u1ea5p \u0111\u1ee7 d\u00f2ng cho \u0111\u00e8n LED ho\u1ea1t \u0111\u1ed9ng.<\/span><\/li>\n
  • Diode D1, D2, D3 (1N4001):<\/b> Diode c\u00f3 ch\u1ee9c n\u0103ng ng\u0103n d\u00f2ng \u0111i\u1ec7n ch\u1ea3y ng\u01b0\u1ee3c, b\u1ea3o v\u1ec7 m\u1ea1ch \u0111i\u1ec7n.\u00a0<\/span><\/li>\n
  • \u0110i\u1ec7n tr\u1edf R1 (10k\u03a9):<\/b> \u0110i\u1ec7n tr\u1edf cung c\u1ea5p \u0111i\u1ec7n \u00e1p ph\u00e2n c\u1ef1c cho transistor Q1 ho\u1ea1t \u0111\u1ed9ng.<\/span><\/li>\n
  • \u0110i\u1ec7n tr\u1edf R2 (220\u03a9):<\/b> \u0110i\u1ec7n tr\u1edf gi\u1edbi h\u1ea1n d\u00f2ng \u0111i\u1ec7n cho \u0111\u00e8n LED, \u0111\u1ea3m b\u1ea3o \u0111\u00e8n ho\u1ea1t \u0111\u1ed9ng an to\u00e0n v\u00e0 kh\u00f4ng b\u1ecb ch\u00e1y.<\/span><\/li>\n
  • T\u1ee5 \u0111i\u1ec7n C1 (100\u00b5F):<\/b> T\u1ee5 \u0111i\u1ec7n l\u1ecdc nhi\u1ec5u, gi\u00fap \u0111\u00e8n LED s\u00e1ng \u0111\u1ec1u v\u00e0 \u1ed5n \u0111\u1ecbnh.\u00a0<\/span><\/li>\n
  • 2 b\u00f3ng LED: <\/b>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng lo\u1ea1i LED c\u00f3 m\u00e0u s\u1eafc v\u00e0 \u0111\u1ed9 s\u00e1ng theo s\u1edf th\u00edch.<\/span><\/li>\n
  • C\u00f4ng t\u1eafc S1: <\/b>C\u00f4ng t\u1eafc d\u00f9ng \u0111\u1ec3 b\u1eadt\/t\u1eaft \u0111\u00e8n LED.<\/span><\/li>\n
  • Jack c\u1eafm USB: <\/b>Jack c\u1eafm k\u1ebft n\u1ed1i m\u1ea1ch v\u1edbi c\u1ed5ng USB c\u1ee7a m\u00e1y t\u00ednh.<\/span><\/li>\n
  • D\u00e2y \u0111i\u1ec7n:<\/b> S\u1eed d\u1ee5ng d\u00e2y \u0111i\u1ec7n v\u1edbi k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c linh ki\u1ec7n.<\/span><\/li>\n<\/ul>\n

    S\u01a1 \u0111\u1ed3 m\u1ea1ch<\/span><\/h2>\n
    \"M\u1ea1ch
    M\u1ea1ch \u0111\u00e8n LED USB<\/figcaption><\/figure>\n

    L\u01b0u \u00fd:<\/span><\/p>\n

      \n
    • C\u1ed5ng USB ch\u1ec9 cung c\u1ea5p t\u1ed1i \u0111a d\u00f2ng \u0111i\u1ec7n 100mA. Do \u0111\u00f3, b\u1ea1n kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng qu\u00e1 nhi\u1ec1u \u0111\u00e8n LED. Vi\u1ec7c s\u1eed d\u1ee5ng qu\u00e1 nhi\u1ec1u \u0111\u00e8n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng \u0111\u00e8n s\u00e1ng y\u1ebfu ho\u1eb7c kh\u00f4ng s\u00e1ng.<\/span><\/li>\n
    • N\u00ean s\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng \u0111\u1ec3 ki\u1ec3m tra c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m c\u1ee7a USB tr\u01b0\u1edbc khi \u0111\u1ea5u d\u00e2y. Vi\u1ec7c k\u1ebft n\u1ed1i sai c\u1ef1c c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng m\u1ea1ch \u0111i\u1ec7n.<\/span><\/li>\n
    • Ch\u1ecdn lo\u1ea1i LED ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec7n \u00e1p cung c\u1ea5p (5V).<\/span><\/li>\n
    • L\u1eafp r\u00e1p c\u00e1c linh ki\u1ec7n theo \u0111\u00fang s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ea1ch ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c.<\/span><\/li>\n
    • V\u1ec7 sinh s\u1ea1ch s\u1ebd c\u00e1c \u0111i\u1ec3m h\u00e0n sau khi ho\u00e0n th\u00e0nh.<\/span><\/li>\n<\/ul>\n

      Ngo\u00e0i ra, b\u1ea1n c\u00f3 th\u1ec3 thay \u0111\u1ed5i s\u1ed1 l\u01b0\u1ee3ng \u0111\u00e8n LED s\u1eed d\u1ee5ng cho ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u v\u00e0 ngu\u1ed3n cung c\u1ea5p \u0111i\u1ec7n. V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng nhi\u1ec1u \u0111\u00e8n LED h\u01a1n, b\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng transistor c\u00f3 d\u00f2ng \u0111i\u1ec7n l\u1edbn h\u01a1n v\u00e0 \u0111i\u1ec1u ch\u1ec9nh gi\u00e1 tr\u1ecb \u0111i\u1ec7n tr\u1edf R2 cho ph\u00f9 h\u1ee3p.<\/span><\/p>\n

      B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 s\u00e1ng t\u1ea1o th\u00eam c\u00e1c t\u00ednh n\u0103ng cho m\u1ea1ch \u0111\u00e8n LED USB, v\u00ed d\u1ee5 nh\u01b0 th\u00eam b\u1ed9 dimmer \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 s\u00e1ng \u0111\u00e8n LED, ho\u1eb7c th\u00eam m\u1ea1ch timer \u0111\u1ec3 \u0111\u00e8n t\u1ef1 \u0111\u1ed9ng b\u1eadt\/t\u1eaft theo th\u1eddi gian.<\/span><\/p>\n

      Tr\u00ean \u0111\u00e2y l\u00e0 chia s\u1ebb c\u1ee7a H\u1ecdc vi\u1ec7n iT.vn v\u1ec1 c\u00e1ch kh\u1eafc ph\u1ee5c l\u1ed7i m\u00e1y t\u00ednh kh\u00f4ng nh\u1eadn chu\u1ed9t v\u00e0 b\u00e0n ph\u00edm. 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","protected":false},"excerpt":{"rendered":"

      M\u1ea1ch \u0111\u00e8n LED USB c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m ngu\u1ed3n s\u00e1ng khi m\u1ea5t \u0111i\u1ec7n cho m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch ch\u1ebf t\u1ea1o m\u1ea1ch \u0111\u00e8n LED USB chi ti\u1ebft.<\/p>\n","protected":false},"author":95,"featured_media":43492,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[95,94],"tags":[],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/43490"}],"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=43490"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/43490\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/43492"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=43490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=43490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=43490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}