Subject:
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RE: Electrolytic Capacitor Ratings [was Re: Choosing Parts?]
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 23 Apr 1999 12:16:31 GMT
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Original-From:
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Raymond, Shelby <srr@cherry-semiSAYNOTOSPAM.com>
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Viewed:
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993 times
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Sorry, no. The breakdown occurs purely from the dielectric
material. Remember lightning? You don't all of a sudden see
the clouds come crashing down to the ground and then have
a discharge.
> Shelby R. Raymond
>
> Kind of. Electrolytics are indeed made by plates in a conductive solution,
> however when the voltage increases, it pulls the plates together (standard
> columbs law stuff). When you exceed the rated voltage the force on the
> plates is enough to pull the plate _through_ the dielectric and to make
> contact. The turns the capacitor into a wire and, if current continues to
> flow, into a small explosive device. If it is oil filled (not as common
> these days) you get a smokey orange fire ball. (very impressive but scary
> as hell the first time!)
>
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