Article View: sci.electronics
Article #21536Re: HV Cap Fun!
From: John Logajan
Date: Tue, 30 May 1989 23:04
Date: Tue, 30 May 1989 23:04
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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 -
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Path: arc1-ca.pugleaf.net!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 Lines: 16