When I was in high school, the physics teacher decided to have a one-semester
"electronics" class. There were parts from all sorts of discarded television
sets around. A couple of the less bright students discovered that if you
plugged the electrolytic capacitors into an AC outlet that in several seconds
the capacitor would explode. For several days thereafter, one of those
students would go into a classroom (when it was empty) or to a secluded part of
the hallway and plug a capacitor into an outlet. The results were obvious.
After that, the teacher started checking the capacitors "in and out". The
"explosions" stopped.
Glen, K9STH
Website: http://k9sth.com
________________________________
From: Jim Barber <audioguy@q.com>
To: Gene May <gene-may@hotmail.com>
Cc: Amplifier Mailing List <amps@contesting.com>
Sent: Wednesday, March 28, 2012 7:37 PM
Subject: Re: [Amps] How to know when filter caps begin to fail
Many moons ago my boss at the time was probing about in a live chassis
when an aluminum cap blew. His glasses kept the stuff out of his eyes,
but when he lifted his head I saw he had a chunk of the aluminum can
sticking out of his forehead. When I told him, he calmly reached up and
pulled it loose, then put me to work cleaning up all the paper and gunk
that had showered the shop.
Since then, I've been a bit shy about working directly above a string of
electrolytics...
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