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Why -48V is used as power for telecom?

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  • 20th October 2018 at 05:36 #37770 Reply
    Arham Ashaq
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    i want to know that why we only prefer -48 volts in telecommunication devices

    6th December 2018 at 08:05 #37771 Reply
    osama
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    Why -48V is used as power for telecom

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