Bob J. writes:

> A PowerTrust UPS does nothing for its output until the
> input voltage drops. They do not filter, suppress, or
> condition anything. You can buy a UPS that will condition
> and regulate but the HP PowerTrust does not. Some of the
> higher end UPS can be fed almost anything and will produce
> a beautiful sinusoid at the output.

I'll agree with you on the PowerTrust non-II models.

On the other hand, the PowerTrust II models are true double-conversion
systems which completely regenerate the output voltage signal.  In that
case, your cautions about filtering, etc. do not apply to those models.

Rick

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