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Article #4215Re: Re: Self charging capacitor ? (No, I don't understand it myself)
From: Carl Wuebker
Date: Sun, 01 Nov 1992 18:35
Date: Sun, 01 Nov 1992 18:35
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I've heard of a couple of similar phenomena:
* In the late '60s or early '70s, Popular Electronics had
an article on an "electret" -- so named because it was
an E-field version of a magnet. They even had a way to
make one -- place a voltage between two plates, pour melted
carnuba wax between them and let the voltage remain until
the wax had cooled. The resulting "electret" would charge
up, and you could short it periodically and get a spark.
I'm not sure how it works -- perhaps polar molecules are
aligned by the voltage before the wax cools, and naturally
tend to line up that way afterwards. I guess it could also
be another "cold fusion"...
* People who fix TVs usually learn early to ground the second
anode of the CRT while fixing it, because, if left ungrounded,
the second anode tends to charge up to a painful voltage.
Again, I'm not sure of the "why" behind it.
Carl Wuebker
clw@hprnd.rose.hp.com
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From: clw@hprnd.rose.hp.com (Carl Wuebker) Date: Sun, 1 Nov 1992 18:35:10 GMT Subject: Re: Re: Self charging capacitor ? (No, I don't understand it myself) Message-ID: <670019@hprnd.rose.hp.com> Organization: HP Roseville Networks Path: arc1-ca.pugleaf.net!sparky!uunet!europa.asd.contel.com!emory!swrinde!sdd.hp.com!scd.hp.com!hpscdm!hplextra!hpcss01!hpergfg2!hprdash!hprnd!clw Newsgroups: sci.physics References: <bernst.719860580@husc8> Lines: 21