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Thread: input voltage

  1. #1
    DILLIGAF GoNz0's Avatar
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    input voltage

    considering it should be 230 volts in the uk i seem to be getting a bit more than expected tonight, i logged in to the UPS to check the condition to find im nearly getting 250 volts tonight !

    so glad i have a good quality UPS to filter it


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    Re: input voltage

    Hmm I'm getting over 250V here...good thing my PSU is holding up...along with the other stuff thats on.

  3. #3
    Senior Member AD-15's Avatar
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    Re: input voltage

    Are you sure it's not just an inaccurate reading?

    I bought a really cheap energy usage monitor thing from Maplin a while back. I plugged it in, and was getting readings above 255V, well outside the standard range (I think it's something like 225-252V). Multimeter was reading something like 245V.
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  4. #4
    DILLIGAF GoNz0's Avatar
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    Re: input voltage

    nope, i just put my fluke on the mains and it matched the poweware reading within 1 volt, its back to 241 volts this morning.

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    Re: input voltage

    mmm

    I wonder if this has any relation to my BSOD issues. I hadn't given it any thought before, but every one of the BSODs has taken place during 12am-2am. The PC is 100% stable at all other times. Could the change in input voltage be passed down through the PSU and cause voltage spikes within the PC?

    For the time being I've managed to prevent the BSODs by running at a much higher VTT (1.34v), but this is a lot higher than it should be based on other peoples overclocks.

    What would be a decent inexpensive UPS (upto ~£100)? I'd only want it for voltage regulation, so a low VA would be fine.

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    Re: input voltage

    Input voltage varies quite a bit although nominal is 230V here in the UK.

    The grid is balanced on frequency, which is maintained as close to 50Hz as possible at all times. Under heavy load if the frequency might start to drop in which case the voltage drops to compensate and avoid it.

    If a power supply can't handle the changing voltage then it's either crap, or broken.
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