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From: Sam Hahn 
Newsgroups: net.micro
Subject: Voltage protection for micros
Message-ID: <8159@brl-tgr.ARPA>
Date: Sat, 9-Feb-85 10:50:20 EST
Article-I.D.: brl-tgr.8159
Posted: Sat Feb  9 10:50:20 1985
Date-Received: Mon, 11-Feb-85 04:46:04 EST
Sender: news@brl-tgr.ARPA
Organization: Ballistic Research Lab
Lines: 18

I have a related question-- I've investigated UPS's for my Compupro, a 
rather large and sensitive beast, but those I've found suitable seem
invariably to be priced around $1400 to $2000.  I have no power engineering
background.  Could someone please explain to me why an uninterruptible
power supply necessarily is so expensive?

I've been targeting UPS's with fast switching time, or else one which is 
on-line continuously.  I'd like one which can power my Compupro, which
s  fairly loaded with 12 boards, and my Quantum 40 MB disk, minimum.
I can live without my printers or terminals , though 1 terminal is a
necessity.

Among the names I've looked at are:
Clary, Sorensen, Computer Power, Power General, Best Energy, Frontier
Technologies, LorTec, Isoreg, Electro Vector, Triad-Utrad, Elgar,
Topaz, and Jefferson Electric...

Thank you.		-- sam hahn [software weenie]