{"id":1969,"date":"2026-08-31T21:51:06","date_gmt":"2026-08-31T14:51:06","guid":{"rendered":"https:\/\/yourapx.com\/?p=1969"},"modified":"2026-08-31T21:51:06","modified_gmt":"2026-08-31T14:51:06","slug":"dien-tro-shunt-do-dong","status":"publish","type":"post","link":"https:\/\/yourapx.com\/?p=1969","title":{"rendered":"\u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng l\u00e0 g\u00ec? K\u00fd hi\u1ec7u, c\u00e1ch m\u1eafc, c\u00e1ch \u0111o v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"

\u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng<\/strong> thu\u1ed9c nh\u00f3m \u0111i\u1ec7n tr\u1edf \u0111o d\u00f2ng. \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng l\u00e0 \u0111i\u1ec7n tr\u1edf c\u00f3 gi\u00e1 tr\u1ecb r\u1ea5t th\u1ea5p, t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p r\u01a1i nh\u1ecf t\u1ef7 l\u1ec7 v\u1edbi d\u00f2ng \u0111i\u1ec7n \u0111\u1ec3 m\u1ea1ch \u0111o ho\u1eb7c b\u1ea3o v\u1ec7 t\u00ednh \u0111\u01b0\u1ee3c d\u00f2ng t\u1ea3i.<\/p>\n

1. \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng l\u00e0 g\u00ec v\u00e0 c\u00f3 vai tr\u00f2 g\u00ec?<\/h2>\n

\u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng l\u00e0 \u0111i\u1ec7n tr\u1edf c\u00f3 gi\u00e1 tr\u1ecb r\u1ea5t th\u1ea5p, t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p r\u01a1i nh\u1ecf t\u1ef7 l\u1ec7 v\u1edbi d\u00f2ng \u0111i\u1ec7n \u0111\u1ec3 m\u1ea1ch \u0111o ho\u1eb7c b\u1ea3o v\u1ec7 t\u00ednh \u0111\u01b0\u1ee3c d\u00f2ng t\u1ea3i.<\/p>\n

2. K\u00fd hi\u1ec7u \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/h2>\n

Tr\u00ean s\u01a1 \u0111\u1ed3, \u0111i\u1ec7n tr\u1edf shunt v\u1eabn mang k\u00fd hi\u1ec7u \u0111i\u1ec7n tr\u1edf v\u00e0 m\u00e3 tham chi\u1ebfu R ho\u1eb7c RS. Lo\u1ea1i \u0111o ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 d\u00f9ng b\u1ed1n \u0111\u1ea7u Kelvin: hai \u0111\u1ea7u mang d\u00f2ng v\u00e0 hai \u0111\u1ea7u l\u1ea5y \u00e1p.<\/p>\n

M\u1ed7i s\u01a1 \u0111\u1ed3 trong b\u00e0i d\u00f9ng m\u00e3 tham chi\u1ebfu ri\u00eang cho t\u1eebng linh ki\u1ec7n, ch\u1eb3ng h\u1ea1n R cho \u0111i\u1ec7n tr\u1edf, C cho t\u1ee5 \u0111i\u1ec7n, D cho diode, Q cho transistor, U cho IC, L cho cu\u1ed9n c\u1ea3m v\u00e0 K cho r\u01a1-le. Khi m\u1ed9t m\u1ea1ch c\u00f3 nhi\u1ec1u linh ki\u1ec7n, s\u1ed1 th\u1ee9 t\u1ef1 R1, R2, C1, D1\u2026 gi\u00fap ph\u00e2n bi\u1ec7t t\u1eebng ph\u1ea7n t\u1eed m\u00e0 kh\u00f4ng l\u00e0m thay \u0111\u1ed5i k\u00fd hi\u1ec7u \u0111i\u1ec7n c\u1ee7a ch\u00fang.<\/p>\n

\"K\u00fd
K\u00fd hi\u1ec7u v\u00e0 quy \u01b0\u1edbc ch\u00e2n c\u1ee7a \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/figcaption><\/figure>\n

3. C\u1ea5u t\u1ea1o, h\u00ecnh d\u1ea1ng v\u00e0 c\u00e1c ki\u1ec3u package<\/h2>\n

Ph\u1ea7n t\u1eed \u0111i\u1ec7n tr\u1edf th\u01b0\u1eddng l\u00e0 h\u1ee3p kim c\u00f3 h\u1ec7 s\u1ed1 nhi\u1ec7t th\u1ea5p, \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u \u0111\u1ec3 ch\u1ecbu d\u00f2ng l\u1edbn v\u00e0 gi\u1eef tr\u1ecb s\u1ed1 \u1ed5n \u0111\u1ecbnh. \u0110i\u1ec7n tr\u1edf \u0111\u01b0\u1eddng m\u1ea1ch v\u00e0 m\u1ed1i h\u00e0n c\u00f3 th\u1ec3 g\u00e2y sai s\u1ed1 \u0111\u00e1ng k\u1ec3 v\u00ec tr\u1ecb s\u1ed1 shunt r\u1ea5t nh\u1ecf.<\/p>\n

    \n
  • \u0110i\u1ec7n tr\u1edf kim lo\u1ea1i d\u1ea1ng thanh ho\u1eb7c l\u00e1<\/li>\n
  • SMD metal-element 2512, 3920 ho\u1eb7c package chuy\u00ean d\u1ee5ng<\/li>\n
  • Shunt b\u1eaft v\u00edt c\u00f4ng su\u1ea5t l\u1edbn<\/li>\n
  • Shunt b\u1ed1n \u0111\u1ea7u Kelvin<\/li>\n<\/ul>\n

    \u1ea2nh th\u1ef1c t\u1ebf ch\u1ec9 \u0111\u01b0\u1ee3c g\u1eafn t\u00ean package khi c\u00f3 \u0111\u1ee7 c\u0103n c\u1ee9 t\u1eeb m\u00e3 linh ki\u1ec7n, k\u00edch th\u01b0\u1edbc ho\u1eb7c datasheet; kh\u00f4ng \u0111o\u00e1n package ch\u1ec9 t\u1eeb t\u1ef7 l\u1ec7 \u1ea3nh.<\/p>\n

    \"\u0110i\u1ec7n
    \u1ea2nh th\u1ef1c t\u1ebf 1: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng<\/figcaption><\/figure>\n

    4. C\u00e1c ch\u1ee7ng lo\u1ea1i ph\u1ed5 bi\u1ebfn<\/h2>\n
      \n
    • Shunt hai \u0111\u1ea7u<\/li>\n
    • Shunt b\u1ed1n \u0111\u1ea7u Kelvin<\/li>\n
    • Shunt SMD<\/li>\n
    • Shunt c\u00f4ng su\u1ea5t b\u1eaft v\u00edt<\/li>\n<\/ul>\n
      \"\u0110i\u1ec7n
      \u1ea2nh th\u1ef1c t\u1ebf 2: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng<\/figcaption><\/figure>\n

      5. C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea7n hi\u1ec3u<\/h2>\n
        \n
      • \u0110i\u1ec7n tr\u1edf danh \u0111\u1ecbnh v\u00e0 dung sai<\/li>\n
      • C\u00f4ng su\u1ea5t li\u00ean t\u1ee5c v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu xung<\/li>\n
      • TCR<\/li>\n
      • D\u00f2ng l\u00e0m vi\u1ec7c<\/li>\n
      • Ki\u1ec3u l\u1ea5y m\u1eabu hai d\u00e2y ho\u1eb7c Kelvin<\/li>\n<\/ul>\n

        \u0110\u1ecdc tr\u1ecb s\u1ed1, dung sai, TCR, c\u00f4ng su\u1ea5t t\u1ea1i nhi\u1ec7t \u0111\u1ed9 tham chi\u1ebfu, \u0111\u01b0\u1eddng cong derating, kh\u1ea3 n\u0103ng ch\u1ecbu xung v\u00e0 khuy\u1ebfn ngh\u1ecb b\u1ed1 tr\u00ed pad\/Kelvin.<\/p>\n

        \"\u0110i\u1ec7n
        \u1ea2nh th\u1ef1c t\u1ebf 3: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng<\/figcaption><\/figure>\n

        6. C\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc v\u00e0 v\u1eadt l\u00fd<\/h2>\n
          \n
        • I = Ushunt<\/sub> \/ Rshunt<\/sub><\/li>\n
        • Ushunt<\/sub> = I \u00d7 Rshunt<\/sub><\/li>\n
        • P = I\u00b2 \u00d7 Rshunt<\/sub><\/li>\n<\/ul>\n

          C\u00f4ng th\u1ee9c l\u00fd t\u01b0\u1edfng ch\u1ec9 \u0111\u00fang trong \u0111i\u1ec1u ki\u1ec7n \u0111\u00e3 n\u00eau. Khi ch\u1ecdn linh ki\u1ec7n th\u1eadt ph\u1ea3i t\u00ednh th\u00eam dung sai, nhi\u1ec7t \u0111\u1ed9, t\u1ea7n s\u1ed1, t\u1ea3i v\u00e0 gi\u1edbi h\u1ea1n trong datasheet.<\/p>\n

          \"\u0110i\u1ec7n
          \u1ea2nh th\u1ef1c t\u1ebf 4: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng<\/figcaption><\/figure>\n

          7. C\u00e1c c\u00e1ch m\u1eafc \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng trong m\u1ea1ch \u0111i\u1ec7n t\u1eed<\/h2>\n

          D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c c\u00e1ch m\u1eafc ph\u1ed5 bi\u1ebfn, c\u00f3 c\u01a1 s\u1edf k\u1ef9 thu\u1eadt \u0111\u1ed1i v\u1edbi \u0111\u00fang nh\u00f3m linh ki\u1ec7n. M\u1ed7i h\u00ecnh c\u00f3 ch\u00fa gi\u1ea3i k\u00fd hi\u1ec7u \u0111\u1ec3 ng\u01b0\u1eddi \u0111\u1ecdc nh\u1eadn ra t\u1eebng lo\u1ea1i linh ki\u1ec7n ngay c\u1ea3 khi m\u1ea1ch c\u00f3 nhi\u1ec1u ph\u1ea7n t\u1eed. S\u1ed1 c\u00e1ch kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ed5 sung ch\u1ec9 \u0111\u1ec3 l\u00e0m b\u00e0i d\u00e0i; c\u1ea5u h\u00ecnh \u0111\u1eb7c th\u00f9 theo m\u00e3 linh ki\u1ec7n ph\u1ea3i l\u1ea5y t\u1eeb datasheet.<\/p>\n

          \n

          1. \u0110o d\u00f2ng ph\u00eda th\u1ea5p (low-side)<\/h3>\n

          Shunt m\u1eafc n\u1ed1i ti\u1ebfp gi\u1eefa t\u1ea3i v\u00e0 mass; d\u1ec5 \u0111o nh\u01b0ng t\u1ea1o ch\u00eanh l\u1ec7ch mass nh\u1ecf. C\u00f4ng th\u1ee9c li\u00ean quan:<\/strong> I = Ushunt<\/sub>\/Rshunt<\/sub>.<\/p>\n

          \"S\u01a1
          S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 1: \u0110o d\u00f2ng ph\u00eda th\u1ea5p (low-side) \u2013 Shunt m\u1eafc n\u1ed1i ti\u1ebfp gi\u1eefa t\u1ea3i v\u00e0 mass; d\u1ec5 \u0111o nh\u01b0ng t\u1ea1o ch\u00eanh l\u1ec7ch mass nh\u1ecf.<\/figcaption><\/figure>\n

          2. \u0110o d\u00f2ng ph\u00eda cao (high-side)<\/h3>\n

          Shunt m\u1eafc n\u1ed1i ti\u1ebfp gi\u1eefa ngu\u1ed3n v\u00e0 t\u1ea3i; c\u1ea7n m\u1ea1ch khu\u1ebfch \u0111\u1ea1i \u0111o d\u00f2ng c\u00f3 d\u1ea3i common-mode ph\u00f9 h\u1ee3p.<\/p>\n

          \"S\u01a1
          S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 2: \u0110o d\u00f2ng ph\u00eda cao (high-side) \u2013 Shunt m\u1eafc n\u1ed1i ti\u1ebfp gi\u1eefa ngu\u1ed3n v\u00e0 t\u1ea3i; c\u1ea7n m\u1ea1ch khu\u1ebfch \u0111\u1ea1i \u0111o d\u00f2ng c\u00f3 d\u1ea3i common-mode ph\u00f9 h\u1ee3p.<\/figcaption><\/figure>\n

          3. M\u1eafc Kelvin b\u1ed1n d\u00e2y<\/h3>\n

          Hai \u0111\u01b0\u1eddng r\u1ed9ng mang d\u00f2ng t\u1ea3i, hai \u0111\u01b0\u1eddng ri\u00eang l\u1ea5y \u0111i\u1ec7n \u00e1p tr\u1ef1c ti\u1ebfp t\u1ea1i hai \u0111\u1ea7u ph\u1ea7n t\u1eed \u0111i\u1ec7n tr\u1edf \u0111\u1ec3 gi\u1ea3m sai s\u1ed1 do \u0111\u01b0\u1eddng m\u1ea1ch v\u00e0 m\u1ed1i h\u00e0n.<\/p>\n

          \"S\u01a1
          S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 3: M\u1eafc Kelvin b\u1ed1n d\u00e2y \u2013 Hai \u0111\u01b0\u1eddng r\u1ed9ng mang d\u00f2ng t\u1ea3i, hai \u0111\u01b0\u1eddng ri\u00eang l\u1ea5y \u0111i\u1ec7n \u00e1p tr\u1ef1c ti\u1ebfp t\u1ea1i hai \u0111\u1ea7u ph\u1ea7n t\u1eed \u0111i\u1ec7n tr\u1edf \u0111\u1ec3 gi\u1ea3m sai s\u1ed1 do \u0111\u01b0\u1eddng m\u1ea1ch v\u00e0 m\u1ed1i h\u00e0n.<\/figcaption><\/figure>\n

          4. \u0110o d\u00f2ng hai chi\u1ec1u<\/h3>\n

          \u0110i\u1ec7n \u00e1p hai \u0111\u1ea7u shunt \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o b\u1ed9 khu\u1ebfch \u0111\u1ea1i hai chi\u1ec1u; d\u1ea5u c\u1ee7a \u0111i\u1ec7n \u00e1p cho bi\u1ebft chi\u1ec1u d\u00f2ng.<\/p>\n

          \"S\u01a1
          S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 4: \u0110o d\u00f2ng hai chi\u1ec1u \u2013 \u0110i\u1ec7n \u00e1p hai \u0111\u1ea7u shunt \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o b\u1ed9 khu\u1ebfch \u0111\u1ea1i hai chi\u1ec1u; d\u1ea5u c\u1ee7a \u0111i\u1ec7n \u00e1p cho bi\u1ebft chi\u1ec1u d\u00f2ng.<\/figcaption><\/figure>\n

          5. Shunt song song v\u1edbi c\u01a1 c\u1ea5u \u0111o<\/h3>\n

          D\u00f9ng trong ampe k\u1ebf \u0111\u1ec3 ph\u1ea7n l\u1edbn d\u00f2ng \u0111i qua shunt, ch\u1ec9 m\u1ed9t ph\u1ea7n nh\u1ecf \u0111i qua c\u01a1 c\u1ea5u \u0111o; t\u1ef7 l\u1ec7 ph\u1ea3i \u0111\u01b0\u1ee3c t\u00ednh v\u00e0 hi\u1ec7u chu\u1ea9n.<\/p>\n

          \"S\u01a1
          S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 5: Shunt song song v\u1edbi c\u01a1 c\u1ea5u \u0111o \u2013 D\u00f9ng trong ampe k\u1ebf \u0111\u1ec3 ph\u1ea7n l\u1edbn d\u00f2ng \u0111i qua shunt, ch\u1ec9 m\u1ed9t ph\u1ea7n nh\u1ecf \u0111i qua c\u01a1 c\u1ea5u \u0111o; t\u1ef7 l\u1ec7 ph\u1ea3i \u0111\u01b0\u1ee3c t\u00ednh v\u00e0 hi\u1ec7u chu\u1ea9n.<\/figcaption><\/figure>\n<\/div>\n

          8. V\u00ed d\u1ee5 t\u00ednh to\u00e1n v\u00e0 \u1ee9ng d\u1ee5ng<\/h2>\n

          V\u1edbi shunt 0,01 \u03a9 v\u00e0 \u0111i\u1ec7n \u00e1p \u0111o \u0111\u01b0\u1ee3c 50 mV, d\u00f2ng t\u1ea3i I = 0,05\/0,01 = 5 A; c\u00f4ng su\u1ea5t tr\u00ean shunt l\u00e0 0,25 W. C\u1ea7n ch\u1ecdn c\u00f4ng su\u1ea5t c\u00f3 h\u1ec7 s\u1ed1 d\u1ef1 ph\u00f2ng v\u00e0 ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 th\u1ef1c t\u1ebf.<\/p>\n

          \"\u0110i\u1ec7n
          \u1ea2nh th\u1ef1c t\u1ebf 5: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng<\/figcaption><\/figure>\n

          9. C\u00e1ch \u0111\u1ecdc m\u00e3 v\u00e0 datasheet<\/h2>\n

          \u0110\u1ecdc tr\u1ecb s\u1ed1, dung sai, TCR, c\u00f4ng su\u1ea5t t\u1ea1i nhi\u1ec7t \u0111\u1ed9 tham chi\u1ebfu, \u0111\u01b0\u1eddng cong derating, kh\u1ea3 n\u0103ng ch\u1ecbu xung v\u00e0 khuy\u1ebfn ngh\u1ecb b\u1ed1 tr\u00ed pad\/Kelvin.<\/p>\n

          \"\u0110i\u1ec7n
          \u1ea2nh th\u1ef1c t\u1ebf 6: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng<\/figcaption><\/figure>\n

          10. C\u00e1ch \u0111o v\u00e0 ki\u1ec3m tra tr\u00ean bo m\u1ea1ch<\/h2>\n
            \n
          1. Ng\u1eaft ngu\u1ed3n r\u1ed3i \u0111o th\u00f4ng m\u1ea1ch \u0111\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u1ee9t<\/li>\n
          2. Kh\u00f4ng d\u00f9ng thang ohm th\u00f4ng th\u01b0\u1eddng \u0111\u1ec3 k\u1ebft lu\u1eadn tr\u1ecb s\u1ed1 milliohm; \u01b0u ti\u00ean ph\u00e9p \u0111o b\u1ed1n d\u00e2y<\/li>\n
          3. Khi c\u1ea5p t\u1ea3i, \u0111o \u0111i\u1ec7n \u00e1p r\u01a1i b\u1eb1ng \u0111\u1ea7u d\u00f2 vi sai ho\u1eb7c \u0111\u1ed3ng h\u1ed3 ph\u00f9 h\u1ee3p v\u00e0 t\u00ednh d\u00f2ng theo \u0111\u1ecbnh lu\u1eadt Ohm<\/li>\n<\/ol>\n

            K\u1ebft qu\u1ea3 \u0111o tr\u1ef1c ti\u1ebfp tr\u00ean bo c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi linh ki\u1ec7n m\u1eafc song song. Ch\u1ec9 nh\u1ea5c ch\u00e2n linh ki\u1ec7n khi thao t\u00e1c an to\u00e0n v\u00e0 th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft.<\/p>\n

            11. D\u1ea1ng h\u01b0 h\u1ecfng v\u00e0 nguy\u00ean nh\u00e2n<\/h2>\n

            D\u1ea5u hi\u1ec7u th\u01b0\u1eddng g\u1eb7p<\/h3>\n
              \n
            • \u0110\u1ee9t do qu\u00e1 d\u00f2ng<\/li>\n
            • T\u0103ng tr\u1ecb s\u1ed1 do qu\u00e1 nhi\u1ec7t ho\u1eb7c m\u1ed1i h\u00e0n suy gi\u1ea3m<\/li>\n
            • Sai s\u1ed1 \u0111o do \u0111\u01b0\u1eddng Kelvin b\u1ed1 tr\u00ed sai<\/li>\n
            • N\u1ee9t m\u1ed1i h\u00e0n tr\u00ean package c\u00f4ng su\u1ea5t<\/li>\n<\/ul>\n

              Nguy\u00ean nh\u00e2n c\u00f3 c\u01a1 s\u1edf k\u1ef9 thu\u1eadt<\/h3>\n
                \n
              • D\u00f2ng ho\u1eb7c n\u0103ng l\u01b0\u1ee3ng xung v\u01b0\u1ee3t \u0111\u1ecbnh m\u1ee9c<\/li>\n
              • T\u1ea3n nhi\u1ec7t k\u00e9m<\/li>\n
              • B\u1ed1 tr\u00ed \u0111\u01b0\u1eddng d\u00f2ng v\u00e0 \u0111\u01b0\u1eddng sense kh\u00f4ng \u0111\u00fang<\/li>\n
              • Chu k\u1ef3 nhi\u1ec7t l\u00e0m m\u1ecfi m\u1ed1i h\u00e0n<\/li>\n<\/ul>\n

                Kh\u00f4ng k\u1ebft lu\u1eadn linh ki\u1ec7n h\u1ecfng ch\u1ec9 t\u1eeb m\u00e0u s\u1eafc ho\u1eb7c \u1ea3nh b\u00ean ngo\u00e0i; c\u1ea7n k\u1ebft h\u1ee3p ph\u00e9p \u0111o, s\u01a1 \u0111\u1ed3 v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh.<\/p>\n

                12. C\u00e1ch l\u1ef1a ch\u1ecdn linh ki\u1ec7n thay th\u1ebf<\/h2>\n
                  \n
                • \u0110\u00fang tr\u1ecb s\u1ed1 v\u00e0 dung sai<\/li>\n
                • C\u00f4ng su\u1ea5t, d\u00f2ng v\u00e0 n\u0103ng l\u01b0\u1ee3ng xung kh\u00f4ng th\u1ea5p h\u01a1n linh ki\u1ec7n c\u0169<\/li>\n
                • TCR ph\u00f9 h\u1ee3p \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ea7n \u0111o<\/li>\n
                • Gi\u1eef \u0111\u00fang k\u1ebft c\u1ea5u hai \u0111\u1ea7u ho\u1eb7c Kelvin v\u00e0 footprint<\/li>\n<\/ul>\n

                  13. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n

                  C\u00f3 th\u1ec3 \u0111o \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng tr\u1ef1c ti\u1ebfp tr\u00ean bo m\u1ea1ch kh\u00f4ng?<\/h3>\n

                  C\u00f3 th\u1ec3 ki\u1ec3m tra s\u01a1 b\u1ed9 khi \u0111\u00e3 ng\u1eaft ngu\u1ed3n, nh\u01b0ng c\u00e1c nh\u00e1nh song song v\u00e0 linh ki\u1ec7n ph\u1ee5 tr\u1ee3 c\u00f3 th\u1ec3 l\u00e0m sai k\u1ebft qu\u1ea3. C\u1ea7n \u0111\u1ed1i chi\u1ebfu s\u01a1 \u0111\u1ed3 v\u00e0 t\u00e1ch m\u1ed9t ch\u00e2n khi c\u1ea7n \u0111o \u0111\u1ed9c l\u1eadp.<\/p>\n

                  C\u00f3 th\u1ec3 d\u00f9ng linh ki\u1ec7n c\u00f3 th\u00f4ng s\u1ed1 cao h\u01a1n \u0111\u1ec3 thay th\u1ebf kh\u00f4ng?<\/h3>\n

                  Kh\u00f4ng ph\u1ea3i th\u00f4ng s\u1ed1 n\u00e0o cao h\u01a1n c\u0169ng t\u1ed1t h\u01a1n. Linh ki\u1ec7n thay th\u1ebf ph\u1ea3i \u0111\u00fang ch\u1ee9c n\u0103ng, s\u01a1 \u0111\u1ed3 ch\u00e2n ho\u1eb7c ki\u1ec3u ch\u00e2n, tr\u1ecb s\u1ed1 ch\u00ednh, \u0111\u1eb7c t\u00ednh theo t\u1ea7n s\u1ed1\/nhi\u1ec7t \u0111\u1ed9, package v\u00e0 \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c.<\/p>\n

                  \n

                  T\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt d\u00f9ng \u0111\u1ec3 \u0111\u1ed1i chi\u1ebfu<\/h2>\n

                  Ph\u1ea7n c\u1ea5u t\u1ea1o, nguy\u00ean l\u00fd, th\u00f4ng s\u1ed1, c\u00e1ch m\u1eafc v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111o ki\u1ec3m trong b\u00e0i \u0111\u01b0\u1ee3c bi\u00ean so\u1ea1n tr\u00ean c\u01a1 s\u1edf c\u00e1c t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt n\u1ed9i b\u1ed9 d\u01b0\u1edbi \u0111\u00e2y. N\u1ed9i dung \u0111\u00e3 \u0111\u01b0\u1ee3c di\u1ec5n gi\u1ea3i b\u1eb1ng ti\u1ebfng Vi\u1ec7t cho m\u1ee5c \u0111\u00edch \u0111\u00e0o t\u1ea1o, kh\u00f4ng sao ch\u00e9p nguy\u00ean v\u0103n. H\u00ecnh c\u00f3 ch\u1eef n\u01b0\u1edbc ngo\u00e0i ch\u1ec9 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 nghi\u00ean c\u1ee9u; b\u00e0i \u0111\u0103ng ch\u1ec9 s\u1eed d\u1ee5ng \u1ea3nh th\u1ef1c t\u1ebf ho\u1eb7c s\u01a1 \u0111\u1ed3 \u0111\u00e3 \u0111\u01b0\u1ee3c v\u1ebd l\u1ea1i b\u1eb1ng ti\u1ebfng Vi\u1ec7t.<\/p>\n

                    \n
                  1. [1] Electrical Circuits<\/strong> \u2014 trang 1487.<\/li>\n
                  2. [2] Noise In Receiving Systems<\/strong> \u2014 trang 47.<\/li>\n
                  3. [3] Audel.Electrical.Course.for.Apprentices.and.Journeymen.eBook<\/strong> \u2014 trang 72.<\/li>\n
                  4. [4] Electrician's Exam Question and Answers<\/strong> \u2014 trang 44.<\/li>\n
                  5. [5] Electrical Circuits<\/strong> \u2014 trang 262.<\/li>\n
                  6. [6] ON_Analog_Integrated_Circuits<\/strong> \u2014 trang 118.<\/li>\n
                  7. [7] The Art of Electronics 2ed<\/strong> \u2014 trang 206.<\/li>\n
                  8. [8] ON_Analog_Integrated_Circuits<\/strong> \u2014 trang 1243.<\/li>\n<\/ol>\n<\/section>\n

                    14. K\u1ebft lu\u1eadn<\/h2>\n

                    Mu\u1ed1n s\u1eed d\u1ee5ng \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng \u0111\u00fang c\u00e1ch c\u1ea7n nh\u1eadn d\u1ea1ng \u0111\u00fang lo\u1ea1i, \u0111\u1ecdc \u0111\u01b0\u1ee3c k\u00fd hi\u1ec7u, hi\u1ec3u c\u00e1ch m\u1eafc, t\u00ednh \u0111\u01b0\u1ee3c \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c, \u0111o ki\u1ec3m an to\u00e0n v\u00e0 ch\u1ecdn linh ki\u1ec7n thay th\u1ebf theo datasheet thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o h\u00ecnh d\u00e1ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

                    T\u00ecm hi\u1ec3u \u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng: k\u00fd hi\u1ec7u, package, c\u00f4ng th\u1ee9c, c\u00e1c c\u00e1ch m\u1eafc trong m\u1ea1ch, c\u00e1ch \u0111o, l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 l\u1ef1a ch\u1ecdn linh ki\u1ec7n thay th\u1ebf.<\/p>\n","protected":false},"author":1,"featured_media":1807,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-1969","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dien-tu"],"yoast_head":"\n\u0110i\u1ec7n tr\u1edf Shunt \u0111o d\u00f2ng l\u00e0 g\u00ec? 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