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Article #14792

Re: Using big caps as computer power supply filters (?)

#14792
From: David Geiser
Date: Thu, 19 Nov 1992 15:39
21 lines
1235 bytes
wlsmith@valve.heart.rri.uwo.ca (Wayne Smith) writes:
>            I would think that cap's that big would provide maybe 1
> second of backup power.  

What will you gain with 1 sec of backup power?  Does your 'puter
and OS have a _graceful_ save and shutdown on power fail mode or
does it just crash?  I wouldn't expect anything graceful from a
DOS machine.

Problems you might have:  inrush current at power-on may smoke
your surge protectors, time constant for "power supply stable"
signal may be too small with huge caps.

If you want to add something that will help your 'puter survive a
few cycles of line drop-out, try a ferro-resonant transformer.

dag
"If you want to get rid of those caps, advertise in alt.pyrotechnics"
-- 

 To the cat, the experimenter is problematic.
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Message-ID: <1992Nov19.153933.6612@col.hp.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-col!dag
References: <1992Nov17.165023.29174@julian.uwo.ca>

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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-col!dag
From: dag@col.hp.com (David Geiser)
Subject: Re: Using big caps as computer power supply filters (?)
Sender: news@col.hp.com (Usenet News)
Message-ID: <1992Nov19.153933.6612@col.hp.com>
Date: Thu, 19 Nov 1992 15:39:33 GMT
References: <1992Nov17.165023.29174@julian.uwo.ca>
Organization: HP Colorado Springs Division
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