[Nut-upsuser] problem with output voltage on a mustek ups

Pedro Mendes Jorge pmjorge at lip.pt
Wed Mar 12 14:23:47 UTC 2008

Carlos Rodrigues wrote:
> On Fri, Mar 7, 2008 at 11:15 AM, Pedro Mendes Jorge <pmjorge at lip.pt> wrote:
>>  >>  This output voltage is too low! I  think power spikes may be better
>>  >>  than using this voltage.
>>  >
>>  > Is this indicated by the UPS, or did you measure this voltage externally?
>>  >
>>  > Arjen has mentioned this before, but the values returned by UPSes are
>>  > generally not calibrated.
>>  >
>>  It is returned by the UPS. But again, I sometimes have an output voltage
>>  of ~225V when it is not trimming.
>>  I could try and measure the "real one", but following Arjen's advice I
>>  won't waste my time, nor someone else's time (yours).
> I used to have a Mustek UPS (600VA). The voltage readings it reported
> were off by 12~15V. When on line power it reported too much voltage,
> and when on battery it reported too low a voltage. This comparing to
> the values read with a voltimeter.

> Don't sweat it. Cheap hardware has downsides...


So what are you using now?


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