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From: dhesi@bsu-cs.UUCP (Rahul Dhesi)
Newsgroups: sci.electronics
Subject: Re: UPS's good and bad
Message-ID: <967@bsu-cs.UUCP>
Date: Wed, 12-Aug-87 16:17:54 EDT
Article-I.D.: bsu-cs.967
Posted: Wed Aug 12 16:17:54 1987
Date-Received: Sat, 15-Aug-87 07:25:31 EDT
References: <1003@me.ri.cmu.edu>
Reply-To: dhesi@bsu-cs.UUCP (Rahul Dhesi)
Organization: CS Dept, Ball St U, Muncie, Indiana
Lines: 16

In article <1003@me.ri.cmu.edu> berman@me.ri.cmu.edu (Steven Berman) writes:
>OFF-LINE UPS:
[...]
>It's plusses
>are 100% off-line efficiency, quiet operation.  Minuses: dirty
>switchover.  Up to 30 msec switch time.  Really intended for
>brute-force loads, that can handle the spikes, and drop-out.

A common error.

By definition, a UPS (uninterruptible power supply) has zero
switchover time.

The above is more correctly called a standby power supply.
-- 
Rahul Dhesi         UUCP:  {ihnp4,seismo}!{iuvax,pur-ee}!bsu-cs!dhesi