[ale] OT: slow back-UPS

[cor.angela at mindspring.com (Cor van Dijk)]

"Keith R. Watson" wrote:

> At 20:20 7/22/2004 -0400, you wrote:
> >Greetings,
> >I have several power backup units and they work ok with pc's. I also
> >have a digital audio recorder,
> >for which they do not work. It appears that the response time is too
> >slow. All of the ones I have
> >checked have a response time of 150 ms (or better they say), which is
> >almost 9 cycles.
> >Is anybody aware of faster ones or a way around this problem? The
> >recorder takes only 30 Watts,
> >so that should not be a problem. TIA.
> >Cor van Dijk.
> >
> >_______________________________________________
> >Ale mailing list
> >Ale at ale.org
> >http://www.ale.org/mailman/listinfo/ale
>
> Cor,
>
> There are different kinds of UPS's. See 02.04.3 of the UPS FAQ.
>
> http://www.non.com/news.answers/UPS-faq.html
>
> 3. What I call "true" UPS systems, those supplies that continuously operate
> from an inverter. Obviously, there is no switchover time, and these
> supplies generally provide the best isolation from power line problems. The
> disadvantages to these devices are increased cost, increased power
> consumption, and increased heat generation. Despite the fact that the
> inverter in a "true" UPS is always on, the reliability of such units does
> not seem to be affected. In fact, we have seen more failures in cheaper SPS
> units. [ Note, though, that given the same quality inverter, you'd expect
> the one that runs least to last longest. ]
>
> keith
>
> -------------
>
> Keith R. Watson                        GTRI/ITD
> Systems Support Specialist III         Georgia Tech Research Institute
> keith.watson at gtri.gatech.edu           Atlanta, GA  30332-0816
> 404-894-0836
>
> _______________________________________________
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> Ale at ale.org
> http://www.ale.org/mailman/listinfo/ale

Thanks Keith,
There appears to be a whole lot more to a UPS than I thought. The search for a
"true UPS" is on. In case you happen to know where I can get one I would
appreciate to hear from you. The vendor list at the end of the FAQ is ten
years old.
Thanks again, Cor van Dijk