{"id":2067,"date":"2026-08-31T23:12:29","date_gmt":"2026-08-31T16:12:29","guid":{"rendered":"https:\/\/yourapx.com\/?p=2067"},"modified":"2026-08-31T23:12:29","modified_gmt":"2026-08-31T16:12:29","slug":"bien-tro-va-chiet-ap","status":"publish","type":"post","link":"https:\/\/yourapx.com\/?p=2067","title":{"rendered":"Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p l\u00e0 g\u00ec? K\u00fd hi\u1ec7u, c\u00e1ch m\u1eafc, c\u00e1ch \u0111o v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"

Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p<\/strong> thu\u1ed9c nh\u00f3m \u0111i\u1ec7n tr\u1edf \u0111i\u1ec1u ch\u1ec9nh. Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p l\u00e0 \u0111i\u1ec7n tr\u1edf c\u00f3 con ch\u1ea1y, cho ph\u00e9p thay \u0111\u1ed5i \u0111i\u1ec7n tr\u1edf gi\u1eefa c\u00e1c ch\u00e2n \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p, d\u00f2ng ho\u1eb7c m\u1ee9c t\u00edn hi\u1ec7u.<\/p>\n

1. Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p l\u00e0 g\u00ec v\u00e0 c\u00f3 vai tr\u00f2 g\u00ec?<\/h2>\n

Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p l\u00e0 \u0111i\u1ec7n tr\u1edf c\u00f3 con ch\u1ea1y, cho ph\u00e9p thay \u0111\u1ed5i \u0111i\u1ec7n tr\u1edf gi\u1eefa c\u00e1c ch\u00e2n \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p, d\u00f2ng ho\u1eb7c m\u1ee9c t\u00edn hi\u1ec7u.<\/p>\n

2. K\u00fd hi\u1ec7u Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/h2>\n

K\u00fd hi\u1ec7u g\u1ed3m ph\u1ea7n t\u1eed \u0111i\u1ec7n tr\u1edf v\u00e0 m\u1ed9t m\u0169i t\u00ean bi\u1ec3u di\u1ec5n con ch\u1ea1y. Bi\u1ebfn tr\u1edf th\u01b0\u1eddng c\u00f3 ba ch\u00e2n: hai \u0111\u1ea7u d\u1ea3i \u0111i\u1ec7n tr\u1edf v\u00e0 ch\u00e2n gi\u1eefa l\u00e0 con ch\u1ea1y; linh ki\u1ec7n kh\u00f4ng ph\u00e2n c\u1ef1c.<\/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 Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p 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

M\u1ed9t d\u1ea3i \u0111i\u1ec7n tr\u1edf b\u1eb1ng carbon, cermet ho\u1eb7c d\u00e2y qu\u1ea5n \u0111\u01b0\u1ee3c ti\u1ebfp x\u00fac b\u1edfi con ch\u1ea1y c\u01a1 kh\u00ed. \u0110\u1ed9 b\u1ec1n ph\u1ee5 thu\u1ed9c v\u1eadt li\u1ec7u, s\u1ed1 v\u00f2ng quay v\u00e0 d\u00f2ng qua con ch\u1ea1y.<\/p>\n

    \n
  • Bi\u1ebfn tr\u1edf xoay<\/li>\n
  • Bi\u1ebfn tr\u1edf tr\u01b0\u1ee3t<\/li>\n
  • Trimmer m\u1ed9t v\u00f2ng<\/li>\n
  • Trimmer nhi\u1ec1u v\u00f2ng<\/li>\n
  • Bi\u1ebfn tr\u1edf SMD<\/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

    \"H\u00ecnh
    H\u00ecnh k\u1ef9 thu\u1eadt n\u1ed9i b\u1ed9 1: H\u00ecnh d\u1ea1ng th\u1ef1c t\u1ebf v\u00e0 ki\u1ec3u \u0111\u00f3ng g\u00f3i c\u1ee7a Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p. Ngu\u1ed3n \u0111\u1ed1i chi\u1ebfu: Circuit Analysis Theory And Practice, trang 76.<\/figcaption><\/figure>\n
    \"Bi\u1ebfn
    \u1ea2nh th\u1ef1c t\u1ebf 1: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p<\/figcaption><\/figure>\n

    4. C\u00e1c ch\u1ee7ng lo\u1ea1i ph\u1ed5 bi\u1ebfn<\/h2>\n
      \n
    • Tuy\u1ebfn t\u00ednh<\/li>\n
    • Logarit<\/li>\n
    • M\u1ed9t v\u00f2ng<\/li>\n
    • Nhi\u1ec1u v\u00f2ng<\/li>\n
    • D\u00e2y qu\u1ea5n c\u00f4ng su\u1ea5t<\/li>\n<\/ul>\n
      \"Bi\u1ebfn
      \u1ea2nh th\u1ef1c t\u1ebf 2: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p<\/figcaption><\/figure>\n

      5. C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea7n hi\u1ec3u<\/h2>\n
        \n
      • T\u1ed5ng \u0111i\u1ec7n tr\u1edf<\/li>\n
      • Quy lu\u1eadt thay \u0111\u1ed5i tuy\u1ebfn t\u00ednh\/logarit<\/li>\n
      • C\u00f4ng su\u1ea5t<\/li>\n
      • Dung sai<\/li>\n
      • G\u00f3c quay v\u00e0 tu\u1ed5i th\u1ecd c\u01a1 kh\u00ed<\/li>\n<\/ul>\n

        \u0110\u1ecdc t\u1ed5ng \u0111i\u1ec7n tr\u1edf, taper, c\u00f4ng su\u1ea5t, \u0111i\u1ec7n \u00e1p t\u1ed1i \u0111a, \u0111\u1ed9 ph\u00e2n gi\u1ea3i, s\u1ed1 v\u00f2ng, tu\u1ed5i th\u1ecd c\u01a1 kh\u00ed v\u00e0 s\u01a1 \u0111\u1ed3 ch\u00e2n.<\/p>\n

        \"Bi\u1ebfn
        \u1ea2nh th\u1ef1c t\u1ebf 3: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p<\/figcaption><\/figure>\n

        6. C\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc v\u00e0 v\u1eadt l\u00fd<\/h2>\n
          \n
        • Ura<\/sub> \u2248 Uv\u00e0o<\/sub> \u00d7 Rd\u01b0\u1edbi<\/sub>\/(Rtr\u00ean<\/sub>+Rd\u01b0\u1edbi<\/sub>) khi t\u1ea3i c\u00f3 tr\u1edf kh\u00e1ng l\u1edbn<\/li>\n
        • P = I\u00b2R<\/li>\n
        • Rt\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/sub> ph\u1ee5 thu\u1ed9c v\u1ecb tr\u00ed con ch\u1ea1y<\/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

          \"Bi\u1ebfn
          \u1ea2nh th\u1ef1c t\u1ebf 4: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p<\/figcaption><\/figure>\n

          7. C\u00e1c c\u00e1ch m\u1eafc Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p 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. M\u1eafc chi\u1ebft \u00e1p ba ch\u00e2n<\/h3>\n

          Hai \u0111\u1ea7u d\u1ea3i \u0111i\u1ec7n tr\u1edf n\u1ed1i ngu\u1ed3n v\u00e0 mass, con ch\u1ea1y l\u1ea5y \u0111i\u1ec7n \u00e1p \u0111i\u1ec1u ch\u1ec9nh.<\/p>\n

          \"S\u01a1
          S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 1: M\u1eafc chi\u1ebft \u00e1p ba ch\u00e2n \u2013 Hai \u0111\u1ea7u d\u1ea3i \u0111i\u1ec7n tr\u1edf n\u1ed1i ngu\u1ed3n v\u00e0 mass, con ch\u1ea1y l\u1ea5y \u0111i\u1ec7n \u00e1p \u0111i\u1ec1u ch\u1ec9nh.<\/figcaption><\/figure>\n

          2. M\u1eafc bi\u1ebfn tr\u1edf hai ch\u00e2n<\/h3>\n

          D\u00f9ng con ch\u1ea1y v\u00e0 m\u1ed9t \u0111\u1ea7u d\u1ea3i \u0111i\u1ec7n tr\u1edf \u0111\u1ec3 t\u1ea1o \u0111i\u1ec7n tr\u1edf thay \u0111\u1ed5i; th\u01b0\u1eddng n\u1ed1i con ch\u1ea1y v\u1edbi \u0111\u1ea7u \u0111ang d\u00f9ng \u0111\u1ec3 gi\u1ea3m nguy c\u01a1 h\u1edf m\u1ea1ch khi ti\u1ebfp x\u00fac ch\u1eadp ch\u1eddn.<\/p>\n

          \"S\u01a1
          S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 2: M\u1eafc bi\u1ebfn tr\u1edf hai ch\u00e2n \u2013 D\u00f9ng con ch\u1ea1y v\u00e0 m\u1ed9t \u0111\u1ea7u d\u1ea3i \u0111i\u1ec7n tr\u1edf \u0111\u1ec3 t\u1ea1o \u0111i\u1ec7n tr\u1edf thay \u0111\u1ed5i; th\u01b0\u1eddng n\u1ed1i con ch\u1ea1y v\u1edbi \u0111\u1ea7u \u0111ang d\u00f9ng \u0111\u1ec3 gi\u1ea3m nguy c\u01a1 h\u1edf m\u1ea1ch khi ti\u1ebfp x\u00fac ch\u1eadp ch\u1eddn.<\/figcaption><\/figure>\n

          3. M\u1eafc h\u1ed3i ti\u1ebfp \u0111i\u1ec1u ch\u1ec9nh<\/h3>\n

          \u0110\u1eb7t trong m\u1ea1ng h\u1ed3i ti\u1ebfp c\u1ee7a op-amp ho\u1eb7c ngu\u1ed3n \u0111\u1ec3 ch\u1ec9nh gain hay \u0111i\u1ec7n \u00e1p; ph\u1ea3i gi\u1edbi h\u1ea1n d\u1ea3i \u0111\u1ec3 tr\u00e1nh tr\u1ea1ng th\u00e1i nguy hi\u1ec3m.<\/p>\n

          \"S\u01a1
          S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 3: M\u1eafc h\u1ed3i ti\u1ebfp \u0111i\u1ec1u ch\u1ec9nh \u2013 \u0110\u1eb7t trong m\u1ea1ng h\u1ed3i ti\u1ebfp c\u1ee7a op-amp ho\u1eb7c ngu\u1ed3n \u0111\u1ec3 ch\u1ec9nh gain hay \u0111i\u1ec7n \u00e1p; ph\u1ea3i gi\u1edbi h\u1ea1n d\u1ea3i \u0111\u1ec3 tr\u00e1nh tr\u1ea1ng th\u00e1i nguy hi\u1ec3m.<\/figcaption><\/figure>\n<\/div>\n

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

          Chi\u1ebft \u00e1p 10 k\u03a9 m\u1eafc gi\u1eefa 5 V v\u00e0 mass, con ch\u1ea1y \u1edf gi\u1eefa cho \u0111i\u1ec7n \u00e1p x\u1ea5p x\u1ec9 2,5 V khi t\u1ea3i c\u00f3 tr\u1edf kh\u00e1ng l\u1edbn; t\u1ea3i th\u1ea5p s\u1ebd l\u00e0m sai t\u1ef7 l\u1ec7 chia \u00e1p.<\/p>\n

          \"Bi\u1ebfn
          \u1ea2nh th\u1ef1c t\u1ebf 5: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p<\/figcaption><\/figure>\n

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

          \u0110\u1ecdc t\u1ed5ng \u0111i\u1ec7n tr\u1edf, taper, c\u00f4ng su\u1ea5t, \u0111i\u1ec7n \u00e1p t\u1ed1i \u0111a, \u0111\u1ed9 ph\u00e2n gi\u1ea3i, s\u1ed1 v\u00f2ng, tu\u1ed5i th\u1ecd c\u01a1 kh\u00ed v\u00e0 s\u01a1 \u0111\u1ed3 ch\u00e2n.<\/p>\n

          \"Bi\u1ebfn
          \u1ea2nh th\u1ef1c t\u1ebf 6: h\u00ecnh d\u1ea1ng, m\u00e3 nh\u1eadn d\u1ea1ng ho\u1eb7c ki\u1ec3u l\u1eafp c\u1ee7a Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p<\/figcaption><\/figure>\n

          10. C\u00e1ch \u0111o v\u00e0 ki\u1ec3m tra tr\u00ean bo m\u1ea1ch<\/h2>\n
            \n
          1. \u0110o t\u1ed5ng \u0111i\u1ec7n tr\u1edf gi\u1eefa hai ch\u00e2n ngo\u00e0i<\/li>\n
          2. \u0110o t\u1eeb con ch\u1ea1y t\u1edbi t\u1eebng \u0111\u1ea7u khi xoay; gi\u00e1 tr\u1ecb ph\u1ea3i thay \u0111\u1ed5i li\u00ean t\u1ee5c<\/li>\n
          3. Ki\u1ec3m tra \u0111i\u1ec3m ch\u1ebft, nh\u1ea3y tr\u1ecb s\u1ed1 v\u00e0 nhi\u1ec5u ti\u1ebfp x\u00fac<\/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
            • Con ch\u1ea1y ti\u1ebfp x\u00fac k\u00e9m<\/li>\n
            • \u0110\u1ee9t d\u1ea3i \u0111i\u1ec7n tr\u1edf<\/li>\n
            • Tr\u1ecb s\u1ed1 nh\u1ea3y ho\u1eb7c nhi\u1ec5u khi xoay<\/li>\n
            • K\u1eb9t c\u01a1 kh\u00ed<\/li>\n<\/ul>\n

              Nguy\u00ean nh\u00e2n c\u00f3 c\u01a1 s\u1edf k\u1ef9 thu\u1eadt<\/h3>\n
                \n
              • M\u00e0i m\u00f2n<\/li>\n
              • B\u1ee5i v\u00e0 oxy h\u00f3a<\/li>\n
              • D\u00f2ng qua con ch\u1ea1y qu\u00e1 l\u1edbn<\/li>\n
              • T\u00e1c \u0111\u1ed9ng c\u01a1 kh\u00ed<\/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 t\u1ed5ng \u0111i\u1ec7n tr\u1edf v\u00e0 quy lu\u1eadt tuy\u1ebfn t\u00ednh\/logarit<\/li>\n
                • \u0110\u00fang s\u01a1 \u0111\u1ed3 ch\u00e2n v\u00e0 k\u00edch th\u01b0\u1edbc<\/li>\n
                • C\u00f4ng su\u1ea5t v\u00e0 g\u00f3c quay ph\u00f9 h\u1ee3p<\/li>\n
                • Kh\u00f4ng thay trimmer ch\u00ednh x\u00e1c b\u1eb1ng lo\u1ea1i m\u1ed9t v\u00f2ng n\u1ebfu m\u1ea1ch c\u1ea7n hi\u1ec7u ch\u1ec9nh tinh<\/li>\n<\/ul>\n

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

                  C\u00f3 th\u1ec3 \u0111o Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p 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. \u1ea2nh ngu\u1ed3n ch\u1ec9 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o b\u00e0i sau khi \u0111\u00e3 ki\u1ec3m tra tr\u1ef1c quan v\u00e0 t\u1ea1o b\u1ea3n tr\u00ecnh b\u00e0y ti\u1ebfng Vi\u1ec7t; \u1ea3nh ch\u01b0a \u0111\u1ea1t y\u00eau c\u1ea7u ti\u1ebfp t\u1ee5c ch\u1ec9 d\u00f9ng \u0111\u1ec3 nghi\u00ean c\u1ee9u.<\/p>\n

                    \n
                  1. [1] Electrical Circuits<\/strong> \u2014 trang 1982.<\/li>\n
                  2. [2] Circuit Analysis Theory And Practice<\/strong> \u2014 trang 76.<\/li>\n
                  3. [3] Newnes Industrial Control Wiring Guide<\/strong> \u2014 trang 18.<\/li>\n
                  4. [4] Electrical Circuits<\/strong> \u2014 trang 1981.<\/li>\n
                  5. [5] McGraw-Hill.Teach Yourself Electricity and ElectronicsEbook-FLY<\/strong> \u2014 trang 136.<\/li>\n
                  6. [6] Industrial electronics for engineers, chemists, and technicians<\/strong> \u2014 trang 262.<\/li>\n
                  7. [7] The Illustrated dictionary of electronics<\/strong> \u2014 trang 197.<\/li>\n
                  8. [8] McGraw Hill-Principles and applications of Electrical Engineering<\/strong> \u2014 trang 850.<\/li>\n<\/ol>\n<\/section>\n

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

                    Mu\u1ed1n s\u1eed d\u1ee5ng Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p \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 Bi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p: 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":2056,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-2067","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dien-tu"],"yoast_head":"\nBi\u1ebfn tr\u1edf v\u00e0 chi\u1ebft \u00e1p l\u00e0 g\u00ec? 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