{"id":2496,"date":"2026-09-02T01:15:14","date_gmt":"2026-09-01T18:15:14","guid":{"rendered":"https:\/\/yourapx.com\/?p=2496"},"modified":"2026-09-02T01:15:14","modified_gmt":"2026-09-01T18:15:14","slug":"tu-dien-gom-2","status":"publish","type":"post","link":"https:\/\/yourapx.com\/?p=2496","title":{"rendered":"T\u1ee5 \u0111i\u1ec7n g\u1ed1m l\u00e0 g\u00ec? K\u00fd hi\u1ec7u, c\u00e1ch m\u1eafc, c\u00e1ch \u0111o v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"

1. T\u1ee5 \u0111i\u1ec7n g\u1ed1m l\u00e0 g\u00ec v\u00e0 c\u00f3 vai tr\u00f2 g\u00ec?<\/h2>\n

T\u1ee5 \u0111i\u1ec7n g\u1ed1m l\u00e0 t\u1ee5 \u0111i\u1ec7n, t\u00edch tr\u1eef \u0111i\u1ec7n t\u00edch trong \u0111i\u1ec7n tr\u01b0\u1eddng. Trong m\u1ea1ch, t\u1ee5 c\u00f3 th\u1ec3 l\u1ecdc ngu\u1ed3n, gh\u00e9p ho\u1eb7c t\u00e1ch t\u00edn hi\u1ec7u, t\u1ea1o tr\u1ec5, c\u1ed9ng h\u01b0\u1edfng v\u00e0 cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng t\u1ee9c th\u1eddi. Tr\u01b0\u1edbc khi ch\u1ecdn k\u00fd hi\u1ec7u ho\u1eb7c c\u00e1ch m\u1eafc ph\u1ea3i x\u00e1c \u0111\u1ecbnh t\u1ee5 thu\u1ed9c lo\u1ea1i ph\u00e2n c\u1ef1c hay kh\u00f4ng ph\u00e2n c\u1ef1c.<\/p>\n

Ph\u1ea7n quan tr\u1ecdng nh\u1ea5t l\u00e0 x\u00e1c \u0111\u1ecbnh linh ki\u1ec7n n\u00e0y \u0111ang l\u00e0m nhi\u1ec7m v\u1ee5 g\u00ec trong kh\u1ed1i m\u1ea1ch tr\u01b0\u1edbc khi \u0111o ho\u1eb7c ch\u1ecdn linh ki\u1ec7n thay th\u1ebf.<\/p>\n

2. K\u00fd hi\u1ec7u T\u1ee5 \u0111i\u1ec7n g\u1ed1m trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/h2>\n

C\u00f3 hai k\u00fd hi\u1ec7u kh\u00e1c nhau: t\u1ee5 kh\u00f4ng ph\u00e2n c\u1ef1c d\u00f9ng hai b\u1ea3n c\u1ef1c th\u1eb3ng song song; t\u1ee5 ph\u00e2n c\u1ef1c d\u00f9ng m\u1ed9t b\u1ea3n th\u1eb3ng, m\u1ed9t b\u1ea3n cong v\u00e0 d\u1ea5u + \u1edf c\u1ef1c d\u01b0\u01a1ng. Kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng thay l\u1eabn hai k\u00fd hi\u1ec7u khi ch\u01b0a x\u00e1c \u0111\u1ecbnh lo\u1ea1i t\u1ee5.<\/p>\n

Tr\u00ean s\u01a1 \u0111\u1ed3, t\u1ee5 \u0111i\u1ec7n th\u01b0\u1eddng mang m\u00e3 C; c\u00e1c k\u00fd hi\u1ec7u C1, C2, C3\u2026 gi\u00fap ph\u00e2n bi\u1ec7t t\u1eebng t\u1ee5 trong m\u1ea1ch.<\/p>\n

\"K\u00fd
K\u00fd hi\u1ec7u v\u00e0 quy \u01b0\u1edbc ch\u00e2n c\u1ee7a T\u1ee5 \u0111i\u1ec7n g\u1ed1m trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/figcaption><\/figure>\n

3. C\u1ea5u t\u1ea1o, h\u00ecnh d\u1ea1ng v\u00e0 ki\u1ec3u \u0111\u00f3ng g\u00f3i<\/h2>\n

Hai \u0111i\u1ec7n c\u1ef1c \u0111\u01b0\u1ee3c ng\u0103n b\u1edfi l\u1edbp \u0111i\u1ec7n m\u00f4i. V\u1eadt li\u1ec7u \u0111i\u1ec7n m\u00f4i quy\u1ebft \u0111\u1ecbnh \u0111i\u1ec7n dung, t\u1ed5n hao, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh, d\u1ea3i t\u1ea7n v\u00e0 vi\u1ec7c linh ki\u1ec7n c\u00f3 ph\u00e2n c\u1ef1c hay kh\u00f4ng.<\/p>\n

Nh\u1eefng ki\u1ec3u v\u1ecf v\u00e0 ki\u1ec3u l\u1eafp th\u01b0\u1eddng g\u1eb7p g\u1ed3m:<\/p>\n

    \n
  • G\u1ed1m \u0111\u0129a xuy\u00ean l\u1ed7<\/li>\n
  • MLCC SMD 0201\u20132220<\/li>\n
  • \u0110i\u1ec7n ph\u00e2n nh\u00f4m xuy\u00ean l\u1ed7 ho\u1eb7c SMD<\/li>\n
  • Tantalum\/polymer<\/li>\n
  • Film h\u1ed9p<\/li>\n
  • T\u1ee5 c\u00f4ng su\u1ea5t b\u1eaft v\u00edt<\/li>\n<\/ul>\n
    \"T\u1ee5
    \u1ea2nh th\u1ef1c t\u1ebf 1 c\u1ee7a T\u1ee5 \u0111i\u1ec7n g\u1ed1m d\u00f9ng \u0111\u1ec3 nh\u1eadn bi\u1ebft h\u00ecnh d\u1ea1ng t\u1ed5ng th\u1ec3.<\/figcaption><\/figure>\n

    4. C\u00e1c ch\u1ee7ng lo\u1ea1i ph\u1ed5 bi\u1ebfn<\/h2>\n

    M\u1ed7i ch\u1ee7ng lo\u1ea1i c\u00f3 \u01b0u \u0111i\u1ec3m, gi\u1edbi h\u1ea1n v\u00e0 m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng kh\u00e1c nhau; kh\u00f4ng n\u00ean thay l\u1eabn ch\u1ec9 v\u00ec c\u00f3 h\u00ecnh d\u1ea1ng g\u1ea7n gi\u1ed1ng.<\/p>\n

      \n
    • G\u1ed1m MLCC<\/li>\n
    • \u0110i\u1ec7n ph\u00e2n nh\u00f4m<\/li>\n
    • Tantalum\/polymer<\/li>\n
    • Film<\/li>\n
    • Mica<\/li>\n
    • Si\u00eau t\u1ee5<\/li>\n<\/ul>\n
      \"T\u1ee5
      \u1ea2nh th\u1ef1c t\u1ebf 2 c\u1ee7a T\u1ee5 \u0111i\u1ec7n g\u1ed1m d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

      5. C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea7n hi\u1ec3u<\/h2>\n
        \n
      • \u0110i\u1ec7n dung v\u00e0 dung sai:<\/strong> cho bi\u1ebft tr\u1ecb s\u1ed1 th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c ph\u00e9p l\u1ec7ch bao nhi\u00eau so v\u1edbi tr\u1ecb s\u1ed1 danh \u0111\u1ecbnh.<\/li>\n
      • \u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c:<\/strong> l\u00e0 gi\u1edbi h\u1ea1n \u0111i\u1ec7n \u00e1p ph\u00f9 h\u1ee3p v\u1edbi c\u00e1ch \u0111i\u1ec7n v\u00e0 ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a linh ki\u1ec7n.<\/li>\n
      • ESR v\u00e0 d\u00f2ng ripple:<\/strong> l\u00e0 d\u00f2ng \u0111i\u1ec7n linh ki\u1ec7n c\u00f3 th\u1ec3 mang ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u00e3 n\u00eau.<\/li>\n
      • Nhi\u1ec7t \u0111\u1ed9:<\/strong> cho bi\u1ebft ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 cho ph\u00e9p v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh, tu\u1ed5i th\u1ecd.<\/li>\n
      • \u0110\u1eb7c t\u00ednh gi\u1ea3m \u0111i\u1ec7n dung theo \u0111i\u1ec7n \u00e1p:<\/strong> l\u00e0 gi\u1edbi h\u1ea1n \u0111i\u1ec7n \u00e1p ph\u00f9 h\u1ee3p v\u1edbi c\u00e1ch \u0111i\u1ec7n v\u00e0 ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a linh ki\u1ec7n.<\/li>\n
      • Tu\u1ed5i th\u1ecd:<\/strong> c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ecdc c\u00f9ng \u0111\u01a1n v\u1ecb, \u0111i\u1ec1u ki\u1ec7n \u0111o v\u00e0 gi\u1edbi h\u1ea1n do nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f4ng b\u1ed1.<\/li>\n<\/ul>\n
        \"T\u1ee5
        \u1ea2nh th\u1ef1c t\u1ebf 3 c\u1ee7a T\u1ee5 \u0111i\u1ec7n g\u1ed1m d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        6. C\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc v\u00e0 v\u1eadt l\u00fd<\/h2>\n

        C\u00e1c c\u00f4ng th\u1ee9c d\u01b0\u1edbi \u0111\u00e2y m\u00f4 t\u1ea3 quan h\u1ec7 gi\u1eefa nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng c\u1ee7a linh ki\u1ec7n. U l\u00e0 \u0111i\u1ec7n \u00e1p, I l\u00e0 d\u00f2ng \u0111i\u1ec7n, R l\u00e0 \u0111i\u1ec7n tr\u1edf, P l\u00e0 c\u00f4ng su\u1ea5t, E ho\u1eb7c W l\u00e0 n\u0103ng l\u01b0\u1ee3ng, f l\u00e0 t\u1ea7n s\u1ed1 v\u00e0 t l\u00e0 th\u1eddi gian; \u0111\u01a1n v\u1ecb l\u1ea7n l\u01b0\u1ee3t l\u00e0 V, A, \u03a9, W, J, Hz v\u00e0 s.<\/p>\n

        \n
        C\u00f4ng th\u1ee9c 1<\/figcaption>
        Q = C \u00d7 U<\/div>\n<\/figure>\n
        C\u00f4ng th\u1ee9c 2<\/figcaption>
        i = C \u00d7 dU<\/span>dt<\/span><\/span><\/div>\n<\/figure>\n
        C\u00f4ng th\u1ee9c 3<\/figcaption>
        XC<\/sub> = 1<\/span>2\u03c0fC<\/span><\/span><\/div>\n<\/figure>\n
        C\u00f4ng th\u1ee9c 4<\/figcaption>
        W = \u00bdCU2<\/sup><\/div>\n<\/figure>\n
        C\u00f4ng th\u1ee9c 5<\/figcaption>
        \u03c4 = R \u00d7 C<\/div>\n<\/figure>\n<\/div>\n

        K\u00fd hi\u1ec7u c\u00f3 ch\u1ec9 s\u1ed1 d\u01b0\u1edbi d\u00f9ng \u0111\u1ec3 ch\u1ec9 \u0111\u00fang v\u1ecb tr\u00ed ho\u1eb7c tr\u1ea1ng th\u00e1i \u0111o, ch\u1eb3ng h\u1ea1n Ura<\/sub> l\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra v\u00e0 Ushunt<\/sub> l\u00e0 \u0111i\u1ec7n \u00e1p tr\u00ean \u0111i\u1ec7n tr\u1edf shunt. V\u1edbi k\u00fd hi\u1ec7u ri\u00eang c\u1ee7a t\u1eebng h\u1ecd linh ki\u1ec7n, c\u1ea7n \u0111\u1ecdc \u0111\u1ecbnh ngh\u0129a ngay trong datasheet.<\/p>\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

        \"T\u1ee5
        \u1ea2nh th\u1ef1c t\u1ebf 4 c\u1ee7a T\u1ee5 \u0111i\u1ec7n g\u1ed1m d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        7. C\u00e1c c\u00e1ch m\u1eafc T\u1ee5 \u0111i\u1ec7n g\u1ed1m trong m\u1ea1ch \u0111i\u1ec7n t\u1eed<\/h2>\n

        C\u00e1c c\u00e1ch m\u1eafc \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1eeb d\u1ec5 nh\u1eadn bi\u1ebft \u0111\u1ebfn \u1ee9ng d\u1ee5ng n\u00e2ng cao. \u1ede m\u1ed7i s\u01a1 \u0111\u1ed3, h\u00e3y theo d\u00f5i \u0111i\u1ec3m n\u1ed1i ngu\u1ed3n, mass, \u0111\u1ea7u v\u00e0o, \u0111\u1ea7u ra v\u00e0 chi\u1ec1u d\u00f2ng \u0111i\u1ec7n tr\u01b0\u1edbc khi t\u00ednh to\u00e1n.<\/p>\n

        \n
        \n

        M\u1ee9c c\u01a1 b\u1ea3n: nh\u1eadn bi\u1ebft \u0111\u01b0\u1eddng d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p<\/h3>\n

        1. M\u1eafc song song ngu\u1ed3n \u0111\u1ec3 l\u1ecdc\/decoupling<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> T\u1ee5 n\u1ed1i gi\u1eefa ngu\u1ed3n v\u00e0 mass, \u0111\u1eb7t g\u1ea7n t\u1ea3i \u0111\u1ec3 gi\u1ea3m nhi\u1ec5u v\u00e0 cung c\u1ea5p d\u00f2ng t\u1ee9c th\u1eddi; t\u1ee5 kh\u00f4ng ph\u00e2n c\u1ef1c kh\u00f4ng c\u00f3 chi\u1ec1u l\u1eafp \u0111i\u1ec7n h\u1ecdc.<\/p>\n

        \"S\u01a1
        S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 1: M\u1eafc song song ngu\u1ed3n \u0111\u1ec3 l\u1ecdc\/decoupling \u2013 T\u1ee5 n\u1ed1i gi\u1eefa ngu\u1ed3n v\u00e0 mass, \u0111\u1eb7t g\u1ea7n t\u1ea3i \u0111\u1ec3 gi\u1ea3m nhi\u1ec5u v\u00e0 cung c\u1ea5p d\u00f2ng t\u1ee9c th\u1eddi; t\u1ee5 kh\u00f4ng ph\u00e2n c\u1ef1c kh\u00f4ng c\u00f3 chi\u1ec1u l\u1eafp \u0111i\u1ec7n h\u1ecdc.<\/figcaption><\/figure>\n

        2. M\u1eafc n\u1ed1i ti\u1ebfp \u0111\u1ec3 gh\u00e9p AC<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> T\u1ee5 ch\u1eb7n th\u00e0nh ph\u1ea7n DC v\u00e0 cho t\u00edn hi\u1ec7u AC \u0111i qua; gi\u00e1 tr\u1ecb ph\u1ea3i ph\u00f9 h\u1ee3p tr\u1edf kh\u00e1ng v\u00e0 t\u1ea7n s\u1ed1 th\u1ea5p nh\u1ea5t.<\/p>\n

        \"S\u01a1
        S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 2: M\u1eafc n\u1ed1i ti\u1ebfp \u0111\u1ec3 gh\u00e9p AC \u2013 T\u1ee5 ch\u1eb7n th\u00e0nh ph\u1ea7n DC v\u00e0 cho t\u00edn hi\u1ec7u AC \u0111i qua; gi\u00e1 tr\u1ecb ph\u1ea3i ph\u00f9 h\u1ee3p tr\u1edf kh\u00e1ng v\u00e0 t\u1ea7n s\u1ed1 th\u1ea5p nh\u1ea5t.<\/figcaption><\/figure>\n

        3. M\u1ea1ch RC th\u00f4ng th\u1ea5p<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> \u0110i\u1ec7n tr\u1edf n\u1ed1i ti\u1ebfp, t\u1ee5 xu\u1ed1ng mass; l\u1ea5y t\u00edn hi\u1ec7u t\u1ea1i t\u1ee5.<\/p>\n

        \n
        C\u00f4ng th\u1ee9c 1<\/figcaption>
        fc<\/sub> = 1<\/span>2\u03c0RC<\/span><\/span><\/div>\n<\/figure>\n<\/div>\n
        \"S\u01a1
        S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 3: M\u1ea1ch RC th\u00f4ng th\u1ea5p \u2013 \u0110i\u1ec7n tr\u1edf n\u1ed1i ti\u1ebfp, t\u1ee5 xu\u1ed1ng mass; l\u1ea5y t\u00edn hi\u1ec7u t\u1ea1i t\u1ee5.<\/figcaption><\/figure>\n<\/section>\n
        \n

        M\u1ee9c th\u1ef1c h\u00e0nh: \u1ee9ng d\u1ee5ng trong c\u00e1c kh\u1ed1i m\u1ea1ch<\/h3>\n

        4. M\u1ea1ch RC th\u00f4ng cao<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> T\u1ee5 n\u1ed1i ti\u1ebfp, \u0111i\u1ec7n tr\u1edf xu\u1ed1ng mass; l\u1ea5y t\u00edn hi\u1ec7u t\u1ea1i \u0111i\u1ec7n tr\u1edf.<\/p>\n

        \n
        C\u00f4ng th\u1ee9c 1<\/figcaption>
        fc<\/sub> = 1<\/span>2\u03c0RC<\/span><\/span><\/div>\n<\/figure>\n<\/div>\n
        \"S\u01a1
        S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 4: M\u1eafc c\u1ed9ng h\u01b0\u1edfng \u2013 T\u1ee5 k\u1ebft h\u1ee3p cu\u1ed9n c\u1ea3m trong m\u1ea1ch l\u1ecdc ho\u1eb7c dao \u0111\u1ed9ng.<\/figcaption><\/figure>\n

        5. M\u1ea1ch \u0111\u1ecbnh th\u1eddi<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> T\u1ee5 n\u1ea1p\/x\u1ea3 qua \u0111i\u1ec7n tr\u1edf t\u1ea1o tr\u1ec5, reset ho\u1eb7c dao \u0111\u1ed9ng; ng\u01b0\u1ee1ng th\u1ef1c t\u1ebf ph\u1ee5 thu\u1ed9c IC.<\/p>\n

        \"S\u01a1
        S\u01a1 \u0111\u1ed3 c\u00e1ch m\u1eafc 5: M\u1eafc n\u1ed1i ti\u1ebfp ho\u1eb7c song song nhi\u1ec1u t\u1ee5 \u2013 Song song l\u00e0m t\u0103ng \u0111i\u1ec7n dung; n\u1ed1i ti\u1ebfp gi\u1ea3m \u0111i\u1ec7n dung t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u00e0 t\u0103ng t\u1ed5ng \u0111i\u1ec7n \u00e1p ch\u1ecbu \u0111\u1ef1ng khi chia \u00e1p \u0111\u00fang.<\/figcaption><\/figure>\n

        6. M\u1eafc snubber<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> M\u1ea1ng RC\/RCD \u0111\u1eb7t song song kh\u00f3a ho\u1eb7c t\u1ea3i \u0111\u1ec3 h\u1ea1n ch\u1ebf dv\/dt v\u00e0 xung \u00e1p; ph\u1ea3i ch\u1ecdn \u0111\u00fang t\u1ee5 xung v\u00e0 t\u00ednh n\u0103ng l\u01b0\u1ee3ng.<\/p>\n<\/section>\n

        \n

        M\u1ee9c n\u00e2ng cao: \u0111o l\u01b0\u1eddng, b\u1ea3o v\u1ec7 v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u<\/h3>\n

        7. M\u1eafc c\u1ed9ng h\u01b0\u1edfng<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> T\u1ee5 k\u1ebft h\u1ee3p cu\u1ed9n c\u1ea3m trong m\u1ea1ch l\u1ecdc ho\u1eb7c dao \u0111\u1ed9ng.<\/p>\n

        \n
        C\u00f4ng th\u1ee9c 1<\/figcaption>
        f\u2080 = 1<\/span>2\u03c0\u221aLC<\/span><\/span><\/div>\n<\/figure>\n<\/div>\n

        8. M\u1eafc n\u1ed1i ti\u1ebfp ho\u1eb7c song song nhi\u1ec1u t\u1ee5<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> Song song l\u00e0m t\u0103ng \u0111i\u1ec7n dung; n\u1ed1i ti\u1ebfp gi\u1ea3m \u0111i\u1ec7n dung t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u00e0 t\u0103ng t\u1ed5ng \u0111i\u1ec7n \u00e1p ch\u1ecbu \u0111\u1ef1ng khi chia \u00e1p \u0111\u00fang.<\/p>\n<\/section>\n<\/div>\n

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

        M\u1ea1ch RC 10 k\u03a9 v\u00e0 100 nF c\u00f3 \u03c4 = 1 ms; t\u1ea7n s\u1ed1 c\u1eaft l\u00fd t\u01b0\u1edfng x\u1ea5p x\u1ec9 159 Hz. K\u1ebft qu\u1ea3 th\u1ef1c t\u1ebf c\u00f2n ph\u1ee5 thu\u1ed9c ngu\u1ed3n v\u00e0 t\u1ea3i.<\/p>\n

        \"H\u00ecnh
        H\u00ecnh k\u1ef9 thu\u1eadt tham kh\u1ea3o 1: H\u00ecnh k\u1ef9 thu\u1eadt tham kh\u1ea3o v\u1ec1 T\u1ee5 \u0111i\u1ec7n g\u1ed1m. Ngu\u1ed3n: Secrets of RF Circuit Design , Third Edition, trang 37.<\/figcaption><\/figure>\n
        \"T\u1ee5
        \u1ea2nh th\u1ef1c t\u1ebf 5 c\u1ee7a T\u1ee5 \u0111i\u1ec7n g\u1ed1m d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

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

        \u0110\u1ecdc \u0111i\u1ec7n dung, dung sai, \u0111i\u1ec7n \u00e1p, ESR\/impedance theo t\u1ea7n s\u1ed1, ripple, nhi\u1ec7t \u0111\u1ed9, tu\u1ed5i th\u1ecd v\u00e0 \u0111\u01b0\u1eddng cong derating.<\/p>\n

        H\u00e3y ph\u00e2n bi\u1ec7t th\u00f4ng s\u1ed1 l\u00e0m vi\u1ec7c khuy\u1ebfn ngh\u1ecb v\u1edbi gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i. Gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ee9c n\u00ean duy tr\u00ec trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/p>\n

        \"T\u1ee5
        \u1ea2nh th\u1ef1c t\u1ebf 6 c\u1ee7a T\u1ee5 \u0111i\u1ec7n g\u1ed1m d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/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 v\u00e0 x\u1ea3 t\u1ee5 an to\u00e0n<\/li>\n
        2. \u0110o \u0111i\u1ec7n dung v\u00e0 ESR b\u1eb1ng thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p<\/li>\n
        3. Ki\u1ec3m tra r\u00f2 \u1edf \u0111i\u1ec7n \u00e1p an to\u00e0n<\/li>\n
        4. T\u1ee5 trong m\u1ea1ch c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi c\u00e1c nh\u00e1nh song song<\/li>\n<\/ol>\n

          Khi \u0111o tr\u1ef1c ti\u1ebfp tr\u00ean bo, c\u00e1c linh ki\u1ec7n n\u1ed1i v\u1edbi c\u00f9ng n\u00fat m\u1ea1ch c\u00f3 th\u1ec3 l\u00e0m k\u1ebft qu\u1ea3 kh\u00e1c tr\u1ecb s\u1ed1 ri\u00eang c\u1ee7a linh ki\u1ec7n. N\u1ebfu c\u1ea7n \u0111o \u0111\u1ed9c l\u1eadp, ch\u1ec9 th\u00e1o m\u1ed9t \u0111\u1ea7u ho\u1eb7c ch\u00e2n \u0111o ph\u00f9 h\u1ee3p sau khi \u0111\u00e3 ng\u1eaft ngu\u1ed3n v\u00e0 x\u1ea3 h\u1ebft \u0111i\u1ec7n t\u00edch.<\/p>\n

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

          D\u1ea5u hi\u1ec7u c\u00f3 th\u1ec3 quan s\u00e1t ho\u1eb7c \u0111o \u0111\u01b0\u1ee3c<\/h3>\n
            \n
          • M\u1ea5t \u0111i\u1ec7n dung<\/li>\n
          • ESR t\u0103ng<\/li>\n
          • R\u00f2 ho\u1eb7c ch\u1eadp<\/li>\n
          • N\u1ee9t th\u00e2n ho\u1eb7c h\u1ecfng \u0111i\u1ec7n m\u00f4i<\/li>\n<\/ul>\n

            Nh\u1eefng nguy\u00ean nh\u00e2n c\u1ea7n ki\u1ec3m tra<\/h3>\n
              \n
            • Qu\u00e1 \u00e1p<\/li>\n
            • Nhi\u1ec7t \u0111\u1ed9 cao<\/li>\n
            • \u1ee8ng su\u1ea5t c\u01a1 kh\u00ed<\/li>\n
            • L\u00e3o h\u00f3a \u0111i\u1ec7n m\u00f4i<\/li>\n
            • Xung \u0111i\u1ec7n<\/li>\n<\/ul>\n

              M\u1ed9t d\u1ea5u hi\u1ec7u c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb nhi\u1ec1u nguy\u00ean nh\u00e2n. Ch\u1ec9 k\u1ebft lu\u1eadn linh ki\u1ec7n h\u1ecfng sau khi k\u1ebft h\u1ee3p k\u1ebft qu\u1ea3 \u0111o, s\u01a1 \u0111\u1ed3 m\u1ea1ch 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
              • \u0110i\u1ec7n dung ph\u00f9 h\u1ee3p<\/li>\n
              • \u0110i\u1ec7n \u00e1p, ripple v\u00e0 nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng th\u1ea5p h\u01a1n<\/li>\n
              • ESR v\u00e0 lo\u1ea1i \u0111i\u1ec7n m\u00f4i \u0111\u00fang y\u00eau c\u1ea7u c\u1ee7a m\u1ea1ch<\/li>\n
              • \u0110\u00fang package; kh\u00f4ng th\u00eam quy \u01b0\u1edbc c\u1ef1c t\u00ednh cho t\u1ee5 kh\u00f4ng ph\u00e2n c\u1ef1c<\/li>\n
              • Kh\u00f4ng t\u00f9y \u00fd thay lo\u1ea1i \u0111i\u1ec7n m\u00f4i trong m\u1ea1ch th\u1eddi gian ho\u1eb7c cao t\u1ea7n<\/li>\n<\/ul>\n

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

                C\u00f3 th\u1ec3 \u0111o T\u1ee5 \u0111i\u1ec7n g\u1ed1m tr\u1ef1c ti\u1ebfp tr\u00ean bo m\u1ea1ch kh\u00f4ng?<\/h3>\n

                C\u00f3 th\u1ec3 ki\u1ec3m tra s\u01a1 b\u1ed9 sau khi \u0111\u00e3 ng\u1eaft ngu\u1ed3n v\u00e0 x\u1ea3 \u0111i\u1ec7n t\u00edch. Tuy nhi\u00ean, nh\u1eefng nh\u00e1nh m\u1ea1ch n\u1ed1i song song ho\u1eb7c linh ki\u1ec7n b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 l\u00e0m sai k\u1ebft qu\u1ea3; khi c\u1ea7n \u0111o \u0111\u1ed9c l\u1eadp ph\u1ea3i t\u00e1ch ch\u00e2n ph\u00f9 h\u1ee3p v\u00e0 \u0111\u1ed1i chi\u1ebfu s\u01a1 \u0111\u1ed3.<\/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

                Tr\u01b0\u1edbc h\u1ebft, linh ki\u1ec7n thay th\u1ebf ph\u1ea3i \u0111\u00fang ch\u1ee9c n\u0103ng v\u00e0 tr\u1ecb s\u1ed1 ch\u00ednh. M\u1ed9t s\u1ed1 gi\u1edbi h\u1ea1n nh\u01b0 c\u00f4ng su\u1ea5t ho\u1eb7c \u0111i\u1ec7n \u00e1p c\u00f3 th\u1ec3 ch\u1ecdn cao h\u01a1n, nh\u01b0ng k\u00edch th\u01b0\u1edbc, \u0111\u1eb7c t\u00ednh xung, t\u1ea7n s\u1ed1 v\u00e0 nhi\u1ec7t v\u1eabn ph\u1ea3i ph\u00f9 h\u1ee3p. V\u1edbi linh ki\u1ec7n nhi\u1ec1u ch\u00e2n, s\u01a1 \u0111\u1ed3 ch\u00e2n b\u1eaft bu\u1ed9c ph\u1ea3i t\u01b0\u01a1ng th\u00edch.<\/p>\n

                \n

                T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n

                C\u00e1c t\u00e0i li\u1ec7u d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u1ed1i chi\u1ebfu k\u00fd hi\u1ec7u, nguy\u00ean l\u00fd, th\u00f4ng s\u1ed1 v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111o ki\u1ec3m c\u1ee7a linh ki\u1ec7n.<\/p>\n

                  \n
                1. [1] Data Conversion Handbook Elsevier eBook-LinG<\/strong> \u2014 trang 482, trang 768.<\/li>\n
                2. [2] ON_Analog_Integrated_Circuits<\/strong> \u2014 trang 437, trang 1274.<\/li>\n
                3. [3] Troubleshooting Analog Circuits<\/strong> \u2014 trang 146.<\/li>\n
                4. [4] file PDF<\/strong> \u2014 trang 267, trang 292.<\/li>\n
                5. [5] TAB Electronics Guide to Understanding Electricity and Electronics eBook-EEn<\/strong> \u2014 trang 267.<\/li>\n<\/ol>\n<\/section>\n

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

                  Mu\u1ed1n s\u1eed d\u1ee5ng linh ki\u1ec7n n\u00e0y \u0111\u00fang c\u00e1ch, ng\u01b0\u1eddi \u0111\u1ecdc c\u1ea7n nh\u1eadn d\u1ea1ng \u0111\u00fang lo\u1ea1i, hi\u1ec3u k\u00fd hi\u1ec7u v\u00e0 \u0111\u01b0\u1eddng k\u1ebft n\u1ed1i, t\u00ednh \u0111\u01b0\u1ee3c \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c, \u0111o ki\u1ec3m an to\u00e0n v\u00e0 \u0111\u1ed1i chi\u1ebfu datasheet tr\u01b0\u1edbc khi thay th\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"

                  T\u00ecm hi\u1ec3u T\u1ee5 \u0111i\u1ec7n g\u1ed1m: k\u00fd hi\u1ec7u, ki\u1ec3u \u0111\u00f3ng g\u00f3i, c\u00f4ng th\u1ee9c, c\u00e1ch m\u1eafc trong m\u1ea1ch, ph\u01b0\u01a1ng ph\u00e1p \u0111o, l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch ch\u1ecdn linh ki\u1ec7n thay th\u1ebf.<\/p>\n","protected":false},"author":1,"featured_media":1821,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-2496","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dien-tu"],"yoast_head":"\nT\u1ee5 \u0111i\u1ec7n g\u1ed1m l\u00e0 g\u00ec? K\u00fd hi\u1ec7u, c\u00e1ch m\u1eafc, c\u00e1ch \u0111o v\u00e0 \u1ee9ng d\u1ee5ng - APX-CHUY\u00caN S\u1eecA THI\u1ebeT B\u1eca M\u1ea0NG<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/yourapx.com\/?p=2496\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u1ee5 \u0111i\u1ec7n g\u1ed1m l\u00e0 g\u00ec? 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