wanted: design for low-cost UPS

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Article #4041

#4041

From: Scott Buckley
Date: Tue, 09 Jan 1990 22:24

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Greetings, folks!

I'm fairly new to sci.electronics (this is my first post),
but I suspect this has come up before.  Where can I find a
schematic for a no-frills but reliable UPS that will keep
a Macintosh & hard-drive alive 30 minutes or more during our
winter-storm power failures?  Most of the designs I've considered
are based on a 12 volt car battery (I have one handy), but any
good plan would be welcome.

On a related note, I understand that there was a long-running
discussion here (some months back) about the best method of
providing battery power to a (non-portable) computer while
living _sans powergrid_.  What was the most practical suggestion
offered?

I'll be happy to summarize responses if you send them by E-mail.
On the other hand, if it's just a reference (i.e., to a magazine
article, etc, you might as well post, since lots of readers are
probably wondering, too.     Thanks in advance!!

scotty
theron@reed.UUCP
-- 

theron@reed.UUCP
theron@reed.BITNET

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!unmvax!ogicse!littlei!reed!theron
From: theron@reed.UUCP (Scott Buckley)
Newsgroups: sci.electronics
Subject: wanted: design for low-cost UPS
Keywords: homebrew uninterruptable power supply
Message-ID: <13848@reed.UUCP>
Date: 9 Jan 90 22:24:23 GMT
Organization: Reed College, Portland OR
Lines: 28