Xref: utzoo sci.electronics:6352 sci.physics:8337
Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mailrus!csd4.milw.wisc.edu!srcsip!nic.MR.NET!ns!logajan
From: logajan@ns.network.com (John Logajan)
Newsgroups: sci.electronics,sci.physics
Subject: Re: HV Cap Fun!
Message-ID: <1418@ns.network.com>
Date: 30 May 89 23:04:04 GMT
References: <4924@m2c.M2C.ORG> <3186@kitty.UUCP> <7487@bsu-cs.bsu.edu>
Sender: logajan@ns.network.com (John Logajan)
Followup-To: sci.electronics
Organization: Network Systems Corp. Mpls MN
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In article <7487@bsu-cs.bsu.edu>, dhesi@bsu-cs.bsu.edu (Rahul Dhesi) writes:
> You can discharge some electrolytic
> capatitors, remove the short circuit, and after a few minutes the
> capacitor regains a smaller charge.

This is not uncommon especially in high-voltage capacitors, including
vacuum tube CRTs.  Since the plates of the capacitor are insulated from
each other by a high resistance material (or vacuum) there can come to
exist areas of induced charge within the dielectric itself (or in the
CRT, on remote surfaces.)  The initial discharge will not purge these
because the resistance is so high that it takes a long time for the
charges to leak back out to the plates.

-- 
- John M. Logajan @ Network Systems; 7600 Boone Ave; Brooklyn Park, MN 55428  -
- logajan@ns.network.com / ...rutgers!umn-cs!ns!logajan / john@logajan.mn.org -