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Path: utzoo!utgpu!watserv1!watmath!uunet!cs.utexas.edu!convex!mic!ernest!shibaya!afc
From: afc@shibaya.lonestar.org (Augustine Cano)
Newsgroups: unix-pc.general,comp.sys.att
Subject: Re: Brownouts, shorts, explosions and the unix pc.
Message-ID: <1991Jan9.230029.25214@shibaya.lonestar.org>
Date: 9 Jan 91 23:00:29 GMT
References: <1991Jan5.045917.7018@shibaya.lonestar.org> <134@limbic.ssdl.com>
Organization: Multidisciplinary Designs Unlimited
Lines: 29

In article <134@limbic.ssdl.com> gil@limbic.ssdl.com (Gil Kloepfer Jr.) writes:
>In article <1991Jan5.045917.7018@shibaya.lonestar.org> afc@shibaya.lonestar.org (Augustine Cano) writes:
>[good luck in faring through a nasty brownout activity]
>>No damage occurred in either instance, possibly thanks to the very old
>>surge suppressor I have protecting the computer...
>
>The surge suppressor would not help protect you against brownouts, although
>it might help against any kind of surges resulting from power being
>restored in an indeterminent manner.  Those surge suppressors are generally

Yes, of course.  Obviously the brownout resistance rests exclusively with
the unix pc power supply and the reserve power accumulated in the caps.
The high pitch noise that occurred during the brownout periods probably
just means that the switching circuits had to work extra hard to maintain
the output voltage.  Any power supply experts out there care to explain in
detail this phenomenon?

> [ extra info about surge suppressors & lightning arrestors deleted ]
>
>-- 
>Gil Kloepfer, Jr.              gil@limbic.ssdl.com   ...!ames!limbic!gil 
>Southwest Systems Development Labs (Div of ICUS)   Houston, Texas
>"There are beautiful people I wish would have never opened their mouths,
>because such ugliness oozes out."  Philosophy Prof. at NYIT


-- 
Augustine Cano		INTERNET: afc@shibaya.lonestar.org
			UUCP:     ...!{ernest,egsner}!shibaya!afc