Jim Lange wrote:
>>I have lived in Pasco County (200 yards from New Tampa) for 4+ years.
>>Roughly 10 times a year we get a power interruption of ~1 second. Just
>>enough to reboot the computers and reset the clocks in all of the
>>appliances. These interruptions seem to mostly happen on Monday
>>mornings (either the power company likes to test their equipment on that
>>schedule, or my perception is skewed by that old bugaboo...Monday
>>Morning).
>
>
> Its the switchgear, caused by Enron routing the electricity through
> California :)
>
> But seriously, I always sort of liked the concept of the rotating UPS'
> or rups. You don't have the expensive battery replacement every few
> years. Where I work it costs over $10,000 to do this. Another thing is
> that some ups' brains are powered by the batteries. So if the batteries
> go dead, (like it the generators don't start) it ain't smart enough to
> recharge itself. I've had to use an external battery charger to charge
> the batteries which seems silly consider ups' have chargers built in.
> Also, say if you have 48 batteries connected in series, all it takes is
> one bad one.
>
> At home I use no protection (for my computer) because I like an excuse
> to upgrade. My wife doesn't like it when her computer doesn't work.:)
> Jim
>
RUPS==Flywheel? 'Wired' did an article a couple of years ago about
flywheel UPS systems.
--ronan
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