{"id":52321,"date":"2020-05-11T01:53:54","date_gmt":"2020-05-11T01:53:54","guid":{"rendered":"https:\/\/kdstelectrical.com\/?p=52321"},"modified":"2025-09-18T06:51:53","modified_gmt":"2025-09-18T06:51:53","slug":"tai-sao-hau-het-cac-thiet-bi-truyen-thong-su-dung-dc-48v","status":"publish","type":"post","link":"https:\/\/www.kdstelectrical.com\/vi\/tai-sao-hau-het-cac-thiet-bi-truyen-thong-su-dung-dc-48v\/","title":{"rendered":"T\u1ea1i sao h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb truy\u1ec1n th\u00f4ng s\u1eed d\u1ee5ng DC 48V?"},"content":{"rendered":"

T\u1ea1i sao h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb truy\u1ec1n th\u00f4ng s\u1eed d\u1ee5ng DC 48V?<\/span><\/h1>\n

Trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng truy\u1ec1n th\u00f4ng cho d\u00f9 \u0111\u00f3 l\u00e0 RRU c\u1ee7a tr\u1ea1m g\u1ed1c 5G, m\u00e1y ch\u1ee7 trong trung t\u00e2m d\u1eef li\u1ec7u ho\u1eb7c thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch trong t\u1ee7 ngo\u00e0i tr\u1eddiDC 48V<\/strong> h\u1ea7u nh\u01b0 \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn ph\u1ed5 bi\u1ebfn nh\u01b0 \u0111i\u1ec7n \u00e1p cung c\u1ea5p ti\u00eau chu\u1ea9n. tham s\u1ed1 d\u01b0\u1eddng nh\u01b0 c\u1ed1 \u0111\u1ecbnh n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn ng\u1eabu nhi\u00ean; \u0111\u00fang h\u01a1n, n\u00f3 l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a g\u1ea7n m\u1ed9t th\u1ebf k\u1ef7 ti\u1ebfn h\u00f3a c\u00f4ng ngh\u1ec7.Nh\u01b0 \u201cti\u00eau chu\u1ea9n v\u00e0ng,\u201d 48V \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u qu\u1ea3 v\u00e0 an to\u00e0n trong khi \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed9c \u0111\u00e1o c\u1ee7a c\u00e1c k\u1ecbch b\u1ea3n truy\u1ec1n th\u00f4ng, l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn tr\u00ean to\u00e0n c\u1ea7u.<\/p>\n

B\u00e0i vi\u1ebft n\u00e0y xem x\u00e9t ngu\u1ed3n g\u1ed1c l\u1ecbch s\u1eed, l\u1ee3i th\u1ebf k\u1ef9 thu\u1eadt, t\u00ednh n\u0103ng an to\u00e0n v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p \u0111\u1ec3 gi\u1ea3i th\u00edch t\u1ea1i sao DC 48V \u0111\u00e3 tr\u1edf th\u00e0nh ngu\u1ed3n cung c\u1ea5p \u0111i\u1ec7n ch\u00ednh cho thi\u1ebft b\u1ecb vi\u1ec5n th\u00f4ng.<\/p>\n

\"t04861955a0d6c566f0\"<\/p>\n

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I. Ngu\u1ed3n g\u1ed1c l\u1ecbch s\u1eed: T\u1eeb m\u1ea1ng \u0111i\u1ec7n tho\u1ea1i \u0111\u1ebfn vi\u1ec5n th\u00f4ng hi\u1ec7n \u0111\u1ea1i \u2013 \u201cDi s\u1ea3n \u0111i\u1ec7n \u00e1p\u201d<\/strong><\/span><\/h2>\n

1.M\u1ea1ng \u0111i\u1ec7n tho\u1ea1i s\u1edbm: The \u201cVoltage Selection Gene\u201d (Gene ch\u1ecdn \u0111i\u1ec7n \u00e1p]\u201d<\/strong><\/span><\/h3>\n

V\u00e0o cu\u1ed1i th\u1ebf k\u1ef7 19, c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n tho\u1ea1i \u0111\u1ea7u ti\u00ean d\u1ef1a v\u00e0o pin axit ch\u00ec (thi\u1ebft b\u1ecb l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng chi\u1ebfm \u01b0u th\u1ebf).M\u1ed7i t\u1ebf b\u00e0o axit ch\u00ec c\u00f3 \u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh l\u00e0 2V.C\u00e1c k\u1ef9 s\u01b0 \u0111\u00e3 t\u00ecm th\u1ea5y k\u1ebft n\u1ed1i \u0111\u00f3 24 \u00f4 trong chu\u1ed7i (2V \u00d7 24 = 48V)<\/strong> cung c\u1ea5p m\u1ed9t m\u1ee9c \u0111i\u1ec7n \u00e1p m\u00e0:<\/p>\n

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    Cung c\u1ea5p \u0111\u1ee7 c\u00f4ng su\u1ea5t truy\u1ec1n \u0111\u1ed9ng \u0111\u1ec3 truy\u1ec1n gi\u1ecdng n\u00f3i \u0111\u01b0\u1eddng d\u00e0i m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng.<\/p>\n<\/li>\n

  • \n

    Tr\u00e1nh m\u1ea5t \u0111\u01b0\u1eddng d\u00e2y cao, v\u00ec DC \u0111i\u1ec7n \u00e1p th\u1ea5p c\u00f3 t\u1ed5n th\u1ea5t truy\u1ec1n t\u1ea3i trong c\u00e1p \u0111\u1ed3ng th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi AC \u0111i\u1ec7n \u00e1p cao.<\/p>\n<\/li>\n

  • \n

    Tu\u1ed5i th\u1ecd chu k\u1ef3 pin t\u1ed1i \u0111a (500\u2013800 chu k\u1ef3 \u1edf 48V), so v\u1edbi tu\u1ed5i th\u1ecd gi\u1ea3m \u1edf 60V ho\u1eb7c c\u1ea5u h\u00ecnh c\u1ed3ng k\u1ec1nh h\u01a1n, t\u1ed1n k\u00e9m h\u01a1n \u1edf 24V.<\/p>\n<\/li>\n<\/ul>\n

    Nh\u01b0 v\u1eady, 48V tr\u1edf th\u00e0nh nh\u00fang nh\u01b0 \u201cm\u00e3 di truy\u1ec1n\u201dth\u00ec\u201d<\/strong> ngu\u1ed3n cung c\u1ea5p \u0111i\u1ec7n vi\u1ec5n th\u00f4ng \u0111\u01b0\u1ee3c truy\u1ec1n l\u1ea1i khi ng\u00e0nh n\u00e0y ph\u00e1t tri\u1ec3n t\u1eeb \u0111i\u1ec7n tho\u1ea1i c\u00f3 d\u00e2y \u0111\u1ebfn tr\u1ea1m g\u1ed1c kh\u00f4ng d\u00e2y v\u00e0 truy\u1ec1n th\u00f4ng vi s\u00f3ng.<\/p>\n

    2. Ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 \u201cPath Dependence\u201d<\/span><\/strong><\/h3>\n

    V\u00e0o gi\u1eefa th\u1ebf k\u1ef7 20, c\u00e1c nh\u00e0 khai th\u00e1c vi\u1ec5n th\u00f4ng nh\u01b0 AT & T v\u00e0 British Telecom \u0111\u00e3 \u00e1p d\u1ee5ng 48V \u1edf quy m\u00f4 l\u1edbn. h\u1ed7 tr\u1ee3 c\u00e1c h\u1ec7 sinh th\u00e1i (b\u1ed9 ch\u1ec9nh l\u01b0u, pin, \u0111\u1ea7u n\u1ed1i) \u0111\u1ec1u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho 48V. \u0110\u1ec3 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch v\u00e0 chi ph\u00ed thi\u1ebft k\u1ebf l\u1ea1i l\u1edbn, ITU ch\u00ednh th\u1ee9c bao g\u1ed3m 48V DC l\u00e0 ti\u00eau chu\u1ea9n cung c\u1ea5p vi\u1ec5n th\u00f4ng \u01b0a th\u00edch<\/strong> trong h\u01b0\u1edbng d\u1eabn n\u0103m 1980 c\u1ee7a n\u00f3.
    T\u1eeb 2G \u0111\u1ebfn 5G, ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u1eabn gi\u1eef l\u1ea1i \u0111i\u1ec7n \u00e1p n\u00e0y (notnot) v\u00ec 48V l\u00e0 l\u1ef1a ch\u1ecdn kh\u1ea3 thi duy nh\u1ea5t, nh\u01b0ng v\u00ec thay th\u1ebf n\u00f3 s\u1ebd \u0111\u00f2i h\u1ecfi ph\u1ea3i thi\u1ebft k\u1ebf l\u1ea1i h\u00e0ng t\u1ef7 thi\u1ebft b\u1ecb v\u00e0 \u00e1p \u0111\u1eb7t h\u00e0ng t\u1ef7 chi ph\u00ed gia t\u0103ng.<\/p>\n

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    II. \u01afu \u0111i\u1ec3m k\u1ef9 thu\u1eadt: \u0110\u00e1p \u1ee9ng \u201cNhu c\u1ea7u DC \u0111i\u1ec7n \u00e1p th\u1ea5p\u201d c\u1ee7a Thi\u1ebft b\u1ecb vi\u1ec5n th\u00f4ng<\/span><\/strong><\/h2>\n

    \"O1CN01axX1zy1F0EyHzzJXh!!2218959290424\"<\/p>\n

    1. ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p h\u01a1n v\u00e0 \u00edt nhi\u1ec7t<\/span><\/strong><\/h3>\n

    C\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i (chip \u1edf 3.3V\/5V, m\u00f4-\u0111un RF \u1edf 12V) y\u00eau c\u1ea7u chuy\u1ec3n \u0111\u1ed5i DC-DC.V\u1edbi \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o trong c\u00e1c Ph\u1ea1m vi 36\u201372V<\/strong>, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u1ea1t hi\u1ec7u su\u1ea5t cao nh\u1ea5t (92\u201396%), t\u1ea1o ra 48V \u0111i\u1ec3m ng\u1ecdt ng\u00e0o<\/strong>.<\/p>\n

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      \u1ede \u0111i\u1ec7n \u00e1p 24V, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i gi\u1ea3m xu\u1ed1ng hi\u1ec7u su\u1ea5t 85\u201388% do d\u00f2ng \u0111i\u1ec7n cao h\u01a1n.<\/p>\n<\/li>\n

    • \n

      T\u1ea1i 60V, hi\u1ec7u qu\u1ea3 l\u00e0 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c nh\u01b0ng \u0111\u00f2i h\u1ecfi c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao h\u01a1n, t\u0103ng chi ph\u00ed l\u00ean h\u01a1n 20%.
      Ngo\u00e0i ra, d\u00f2ng \u0111i\u1ec7n th\u1ea5p h\u01a1n \u1edf 48V<\/strong> gi\u1ea3m t\u1ed5n th\u1ea5t I\u00b2R v\u00e0 nhi\u1ec7t, gi\u1ea3m nhu c\u1ea7u v\u1ec1 qu\u1ea1t v\u00e0 t\u1ea3n nhi\u1ec7t, \u0111\u1ed3ng th\u1eddi c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady.<\/p>\n<\/li>\n<\/ul>\n

      2. tr\u00e1nh s\u1ef1 b\u1ea5t \u1ed5n \u0111\u1ecbnh AC<\/strong><\/span><\/h3>\n

      DC tr\u00e1nh t\u1ea7n s\u1ed1 v\u00e0 bi\u1ebfn \u0111\u1ed9ng pha (50\/60Hz) v\u1ed1n c\u00f3 trong AC, c\u00f3 th\u1ec3 l\u00e0m bi\u1ebfn d\u1ea1ng t\u00edn hi\u1ec7u RF v\u00e0 t\u0103ng t\u1ef7 l\u1ec7 l\u1ed7i bit.
      N\u00f3 c\u0169ng t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch v\u1edbi pin, lo\u1ea1i b\u1ecf c\u00e1c b\u01b0\u1edbc chuy\u1ec3n \u0111\u1ed5i v\u00e0 t\u1ed5n th\u1ea5t hi\u1ec7u qu\u1ea3 \u0111\u01b0\u1ee3c th\u1ea5y v\u1edbi b\u1ed9 bi\u1ebfn t\u1ea7n AC plus.<\/p>\n

      3. gi\u1ea3m t\u1ed5n th\u1ea5t d\u00f2ng trong tri\u1ec3n khai ph\u00e2n t\u00e1n<\/span><\/strong><\/h3>\n

      Thi\u1ebft b\u1ecb vi\u1ec5n th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai xa ph\u00f2ng \u0111i\u1ec7n. \u1edf c\u00f4ng su\u1ea5t b\u1eb1ng nhau, \u0111i\u1ec7n \u00e1p cao h\u01a1n l\u00e0m gi\u1ea3m d\u00f2ng \u0111i\u1ec7n v\u00e0 do \u0111\u00f3 t\u1ed5n th\u1ea5t.<\/p>\n

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        T\u1ea1i 100W, c\u00e1p 200m: 48V \u2192 7.3% m\u1ea5t; 24V \u2192 29.4% m\u1ea5t; 220V AC \u2192 t\u1ed5n th\u1ea5t t\u1ed1i thi\u1ec3u nh\u01b0ng c\u1ea7n m\u00e1y bi\u1ebfn \u00e1p\/bi\u1ebfn t\u1ea7n t\u1ed1n k\u00e9m.
        Nh\u01b0 v\u1eady, 48V c\u00e2n b\u1eb1ng t\u1ed5n th\u1ea5t \u0111\u01b0\u1eddng d\u00e2y v\u1edbi chi ph\u00ed thi\u1ebft b\u1ecb v\u00e0 \u0111\u1ed9 ph\u1ee9c t\u1ea1p.<\/p>\n<\/li>\n<\/ul>\n

         <\/p>\n

        III. T\u00ednh n\u0103ng an to\u00e0n: B\u1ea3o v\u1ec7 c\u01a1 s\u1edf v\u1eadt ch\u1ea5t v\u00e0 nh\u00e2n s\u1ef1<\/span><\/strong><\/h2>\n

        1. an to\u00e0n \u0111i\u1ec7n \u00e1p th\u1ea5p (SELV Tu\u00e2n th\u1ee7)<\/span><\/strong><\/h3>\n

        Theo ti\u00eau chu\u1ea9n IEC, \u0111i\u1ec7n \u00e1p d\u01b0\u1edbi 60V l\u00e0 An to\u00e0n \u0111i\u1ec7n \u00e1p c\u1ef1c th\u1ea5p (SELV)<\/strong>. \u1edf 48V, ngay c\u1ea3 ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp c\u1ee7a con ng\u01b0\u1eddi g\u00e2y ra d\u00f2ng \u0111i\u1ec7n v\u00f4 h\u1ea1i (<48mA, xa d\u01b0\u1edbi g\u00e2y t\u1eed vong 50mA).\u0110i\u1ec1u n\u00e0y cho ph\u00e9p ho\u1ea1t \u0111\u1ed9ng an to\u00e0n h\u01a1n m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 n\u1eb7ng, kh\u00f4ng gi\u1ed1ng nh\u01b0 220V\/380V AC.<\/p>\n

        2. gi\u1ea3m nguy c\u01a1 ch\u00e1y<\/span><\/strong><\/h3>\n

        \u0110i\u1ec7n \u00e1p cao h\u01a1n, ng\u1eafn m\u1ea1ch t\u1ea1o ra h\u1ed3 quang m\u1ea1nh c\u00f3 th\u1ec3 \u0111\u1ed1t ch\u00e1y c\u00e1c th\u00e0nh ph\u1ea7n.T\u1ea1i 48V, h\u1ed3 quang y\u1ebfu h\u01a1n v\u00e0 nhanh ch\u00f3ng b\u1ecb c\u1eaft b\u1edfi c\u1ea7u ch\u00ec nhanh (\u226410ms).Ng\u01b0\u1ee3c l\u1ea1i, h\u1ed3 quang AC 220V mang n\u0103ng l\u01b0\u1ee3ng nhi\u1ec1u h\u01a1n nhi\u1ec1u, t\u1ea1o ra nguy c\u01a1 ch\u00e1y cao h\u01a1n.<\/p>\n

        \"22\"<\/p>\n

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        IV. \u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf: A Mature \u201cEcosystem Loop\u201d<\/span><\/strong><\/h2>\n

        1.H\u1ec7 sinh th\u00e1i thi\u1ebft b\u1ecb \u0111i\u1ec7n<\/span><\/strong><\/h3>\n

        C\u00e1c nh\u00e0 cung c\u1ea5p nh\u01b0 Huawei, Vertiv, v\u00e0 Delta cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 c\u00e1c h\u1ec7 th\u1ed1ng 48V:<\/p>\n

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          B\u1ed9 ch\u1ec9nh l\u01b0u (\u0111\u1ea7u ra 42\u201358V, hi\u1ec7u su\u1ea5t \u226594%).<\/p>\n<\/li>\n

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          Pin ti\u00eau chu\u1ea9n h\u00f3a (axit ch\u00ec v\u00e0 lithium).<\/p>\n<\/li>\n

        • \n

          C\u00e1c \u0111\u01a1n v\u1ecb ph\u00e2n ph\u1ed1i v\u00e0 \u0111\u1ea7u n\u1ed1i, t\u1ea5t c\u1ea3 \u0111\u1ec1u c\u00f3 th\u1ec3 t\u01b0\u01a1ng t\u00e1c.<\/p>\n<\/li>\n<\/ul>\n

          H\u1ec7 sinh th\u00e1i tr\u01b0\u1edfng th\u00e0nh n\u00e0y gi\u00fap gi\u1ea3m chi ph\u00ed mua s\u1eafm (15\u201320%) v\u00e0 \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c b\u1ea3o tr\u00ec.<\/p>\n

          2. th\u00edch \u1ee9ng Device-Level Adaptation<\/strong><\/span><\/h3>\n

          C\u00e1c nh\u00e0 cung c\u1ea5p nh\u01b0 Ericsson, Nokia, v\u00e0 ZTE thi\u1ebft b\u1ecb thi\u1ebft k\u1ebf kho\u1ea3ng 48V theo m\u1eb7c \u0111\u1ecbnh:<\/p>\n

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            Chipset \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho \u0111\u1ea7u v\u00e0o DC-DC 48V.<\/p>\n<\/li>\n

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            B\u1ed1 c\u1ee5c ph\u1ea7n c\u1ee9ng bao g\u1ed3m c\u00e1c \u0111\u1ea7u n\u1ed1i 48V ti\u00eau chu\u1ea9n.<\/p>\n<\/li>\n

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            S\u1ea3n ph\u1ea9m tr\u1ea3i qua c\u00e1c th\u1eed nghi\u1ec7m tr\u00ean ph\u1ea1m vi 42\u201358V.<\/p>\n<\/li>\n<\/ul>\n

            V\u00ed d\u1ee5, c\u00e1c \u0111\u01a1n v\u1ecb RRU 5G ch\u1ea1y \u1edf 48V, 300W. chuy\u1ec3n \u0111\u1ed5i m\u1ee9c \u0111i\u1ec7n \u00e1p s\u1ebd y\u00eau c\u1ea7u thi\u1ebft k\u1ebf l\u1ea1i, th\u00eam h\u00e0ng tri\u1ec7u chi ph\u00ed R & D v\u00e0 tr\u00ec ho\u00e3n ra m\u1eaft s\u1ea3n ph\u1ea9m.<\/p>\n

            \n

            K\u1ebft lu\u1eadn: 48V DC \u2013 \u201cC\u00e2n b\u1eb1ng t\u1ed1i \u01b0u\u201d cho n\u0103ng l\u01b0\u1ee3ng vi\u1ec5n th\u00f4ng<\/span><\/strong><\/h2>\n

            DC 48V l\u00e0 s\u1ef1 th\u1ecfa hi\u1ec7p t\u1ed1t nh\u1ea5t c\u1ee7a ng\u00e0nh vi\u1ec5n th\u00f4ng gi\u1eefa l\u1ecbch s\u1eed, hi\u1ec7u qu\u1ea3, an to\u00e0n v\u00e0 s\u1ef1 tr\u01b0\u1edfng th\u00e0nh c\u1ee7a h\u1ec7 sinh th\u00e1i.<\/p>\n

              \n
            • \n

              L\u1ecbch s<\/strong>, b\u1eaft ngu\u1ed3n t\u1eeb pin axit ch\u00ec v\u00e0 \u0111\u01b0\u1ee3c c\u1ee7ng c\u1ed1 qua nhi\u1ec1u th\u1eadp k\u1ef7 th\u1ef1c h\u00e0nh.<\/p>\n<\/li>\n

            • \n

              K\u1ef9 thu\u1eadt<\/strong>, \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 chuy\u1ec3n \u0111\u1ed5i, tri\u1ec3n khai ph\u00e2n t\u00e1n v\u00e0 \u1ed5n \u0111\u1ecbnh h\u1ec7 th\u1ed1ng.<\/p>\n<\/li>\n

            • \n

              An to\u00e0n<\/strong>, d\u01b0\u1edbi ng\u01b0\u1ee1ng SELV, gi\u1ea3m thi\u1ec3u r\u1ee7i ro.<\/p>\n<\/li>\n

            • \n

              C\u00f4ng nghi\u1ec7p<\/strong>, \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi m\u1ed9t h\u1ec7 sinh th\u00e1i ho\u00e0n ch\u1ec9nh, ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n<\/li>\n<\/ul>\n

              Nh\u00ecn v\u1ec1 ph\u00eda tr\u01b0\u1edbc, v\u1edbi 6G, truy\u1ec1n th\u00f4ng v\u1ec7 tinh v\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i pin lithium (3.2V \u00d7 15 = 48V), ti\u00eau chu\u1ea9n 48V s\u1ebd kh\u00f4ng ch\u1ec9 t\u1ed3n t\u1ea1i m\u00e0 c\u00f2n m\u1edf r\u1ed9ng sang \u0111i\u1ec7n to\u00e1n bi\u00ean v\u00e0 IoT, v\u00ec l\u1ee3i th\u1ebf c\u1ee7a n\u00f3 ph\u00f9 h\u1ee3p ho\u00e0n h\u1ea3o v\u1edbi nhu c\u1ea7u c\u1ee7a ng\u00e0nh v\u1ec1 s\u1ef1 \u1ed5n \u0111\u1ecbnh, hi\u1ec7u qu\u1ea3, an to\u00e0n v\u00e0 ki\u1ec3m so\u00e1t chi ph\u00ed.<\/p>\n

               <\/p>","protected":false},"excerpt":{"rendered":"

              Why Do Most Communication Devices Use DC 48V? In communication […]<\/p>\n","protected":false},"author":1,"featured_media":52335,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[125,121],"tags":[],"class_list":["post-52321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rectifier-power-supply-system","category-telecommunication-power"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kdstelectrical.com\/vi\/wp-json\/wp\/v2\/posts\/52321","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kdstelectrical.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kdstelectrical.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kdstelectrical.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kdstelectrical.com\/vi\/wp-json\/wp\/v2\/comments?post=52321"}],"version-history":[{"count":0,"href":"https:\/\/www.kdstelectrical.com\/vi\/wp-json\/wp\/v2\/posts\/52321\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kdstelectrical.com\/vi\/wp-json\/wp\/v2\/media\/52335"}],"wp:attachment":[{"href":"https:\/\/www.kdstelectrical.com\/vi\/wp-json\/wp\/v2\/media?parent=52321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kdstelectrical.com\/vi\/wp-json\/wp\/v2\/categories?post=52321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kdstelectrical.com\/vi\/wp-json\/wp\/v2\/tags?post=52321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}