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From: Cursitor Doom <cd@notformail.com>
Newsgroups: sci.electronics.design
Subject: Re: heating a cap
Date: Fri, 04 Oct 2024 18:00:51 +0100
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On Thu, 03 Oct 2024 16:36:24 -0700, john larkin <jl@glen--canyon.com>
wrote:

>I got a small (under 1" long) aluminum electro cap, 220 uF 63v, and
>cranked up the voltage. It started drawing a bunch of current at 105
>volts, got hot, and folded back to 80 mA at 87v. 
>
>It got too hot to touch in a couple of minutes, after roughly 500
>joules. Freeze spray let it go back up to 100 volts or so.
>
>None of that seemed to damage it, so an electrolytic cap sort of has a
>built-in MOV. 

That's a hell of sweeping conclusion to come to based on a test of
just one random electrolytic!