Subject: Re: Explosions in electronics.
Date: Sat, 28 Sep 2002 12:37:22 -0700
Organization: SCN Research of Tigard, Oregon, USA.
References: <3D956D97.276B4910@imit.kth.se> <3D9600A4.firstname.lastname@example.org>
NNTP-Posting-Date: Sat, 28 Sep 2002 19:38:36 +0000 (UTC)
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You should try hermetically sealed military style tantalumns
I still remember Sgt Tancheck shaking in his boots, quite dumbfounded and at
a loss for words...
"Chuck Simmons" wrote in message
> Ian Stirling wrote:
> > Kevin Aylward wrote:
> > >
> > >
> > >
> > >
> > > "Ian Stirling" wrote in message
> > > news:email@example.com...
> > >> Uwe Zimmermann wrote:
> > >> >
> > >> > most probably you either connected the capacitor with reversed
> > >> > polarity or wrong voltage rating. Electrolytic capacitors
> > > essentially
> > >> > work as reverse biased diodes. If you connect them with reversed
> > >> > polarity, current can pass through and (a) dissipate heat and (b)
> > >> > start electrolysis of the electrolyte, releasing gas.
> > >> > The same happens if you exceed the maximum voltage rating.
> > >>
> > >> I know I connected it backwards, as I found the epoxy red plug
> > > connected
> > >> to the wrong terminal.
> > >> I suppose it must just be electrolytic gas generation, I was just
> > >> surprised that the case seems to have fragmented, rather than simply
> > >> blown out the plug.
> > >
> > > Ahmmm. Well, you obviously didn't play much with electronics stuff
> > > you were a kid.
> > Sure I did, I've just never seen the failure mode where the case
> > they all seem to 'just' blow out the base/contents, leaving the can
> Back in about 1970, I had an engineering student working for me as a
> technician. At the time, I ran a general electronic services shop for
> the physics department of a university so the student worked for me at
> essentially slave rates. This particular student had a particularly
> large complement of thumbs. About ten. On each hand! It was largely due
> to his efforts that we made the astounding discovery of SASEF in my lab
> (SASEF is Smoke Amplification by Stimulated Emission of Fire). Other
> discoveries we made were definite identification of a particle emission
> region in the characteristic curves of most semiconductors and methods
> for high velocity launch of electrolytic capacitors.
> Over the years I ran the shop, I had several student technicians but the
> one above was by far the most entertaining if nothing else.
> ... The times have been,
> That, when the brains were out,
> the man would die. ... Macbeth
> Chuck Simmons firstname.lastname@example.org