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Modern UPS - how do they work

Discussion in 'General Electronics' started by kofi Mpengya, Jan 21, 2004.

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  1. kofi Mpengya

    kofi Mpengya Guest

    Please I have read that modern ups uses modified sine wave @ high
    and its stepped up by a ferrite transformer. My worry is that most of
    commercial ups are marked 50/60HZ. Meaning the output is an AC with a
    frequency of 50 or 60Hz. How is this achieved?
  2. Jimmy

    Jimmy Guest

    A dc to dc converter first converts bsttery voltage to around 150VDC this
    is the High frequency part then the 150VDC is converted to AC through a
    switching circuit.
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