ups for 3b1
Vernon C. Hoxie
vern at zebra.UUCP
Thu Mar 22 12:06:18 AEST 1990
In article <3005 at umbc3.UMBC.EDU>, motteler at umbc3.UMBC.EDU (Howard E. Motteler) writes:
>
> Does anyone know how the 3b1 power supply holds up when fed the square
> wave output typical of most UPS's? I know this causes a problem for
> some switching power supplies.
I picked up a an UPS from a local second source outlet a couple of
years ago. At that time I was working at Bell Labs so I looked up the
power systems guru's. I was told by one of them that indeed the 3b1
power would work fine with a square wave input.
Since then, I have been working at my computer when the lights went out
but system chugged right along. No smoke.
Only once since installing the cheapo square wave UPS have I found that
the computer has rebooted. Apparently the outage was longer than usual
and the battery had run down.
When I asked the people at Telebit about connecting the Trailblazer to a
square wave UPS, I got a resounding no, no, NO.
Now for my question. Does anyone have any suggestions about the care
and maintenance of the battery? Should it be cycled periodically?
What is a convenient way to test its status?
The battery is a sealed unit and as I recall, it was manufactured by a
company in Castro Valley, Calif. I would have to dig it out from under
the desk for any more info.
vern
--
Vernon C. Hoxie {ncar,nbires,boulder,isis}!scicom!zebra!vern
3975 W. 29th Ave. voice: 303-477-1780
Denver, Colo., 80212 TB+ uucp: 303-455-2670
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