On 4/6/11 11:25 AM, Murray Greenman wrote:
Why not just put a bigger battery in your UPS? I have a couple of old
ones, and they run just fine with an old car battery, and thus give me
many hours of backup for my Trimble/Nortel GPSDO.
Just be careful though - in some UPS units the battery is live to the
mains! The APC ones seem to be OK.
The other thing is that some UPS's have a thermal limit on how long they
can run (e.g. 20 minutes before they melt)... suitable fans might help
(as opposed to having it in a dust filled box under your desk)
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