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UPC trouble!

Discussion in 'Electronic Repair' started by Dani, Aug 14, 2007.

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  1. Dani

    Dani Guest

    I have a Tripp Lite BC-450 UPC, that works, but puts out 145 volts AC,
    instead of the normal 120 vlots AC. I can't find any semiconductors
    shorted, or overheating, it just runs at too high
    an output. I'm using a fully charged acid 12 volt car battery as it's
    source! Input anyone? Dani.
  2. David

    David Guest

    How are you measuring the voltage? Many meters will not give
    accurate RMS readings with the modified sine wave waveforms
    most of the UPS generate.

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