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From: Cursitor Doom <cd@notformail.com>
Newsgroups: sci.electronics.design
Subject: Re: Survivor!
Date: Wed, 20 Mar 2024 18:04:59 +0000
Organization: A noiseless patient Spider
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On Wed, 20 Mar 2024 09:45:50 +0000, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:

>Cursitor Doom <cd@notformail.com> wrote:
>
>> Hi all,
>> 
>> Just a quick one. But first, I'd just like to reiterate that I'm
>> noting your comments on the ripple thread and will deal with them in
>> due course when i have a couple of hours to spare next Sunday.
>> Yesterday I had 2 minutes to waste so I blew up another electrolytic
>> capacitor - or rather I *tried* to. A 10uF 10V cap across the output
>> of a variac with Vo set to 240VAC. There was a considerable *pop* but
>> no bang and it turned out the T3.15 Amp fuse in the variac had blown
>> spectacularly - but the cap had survived unscathed! Tested fine for
>> capacitance and ESR! I never would have believed it. Just wondering
>> how the hell it didn't get destroyed...
>
>It's only doing it to annoy you.  Make sure it is run well within its
>ratings and put it on a board that has to be buried several layers deep
>in some complicated equipment and is rivetted in place.   It will fail
>in no time at all and probably take several other valuable components
>with it.

LOL! Yeah, you got that 100% right I reckon, Liz. I realise I've
probably curtailed the service life of this cap by some considerable
amount, but nevertheless it's still remarkable it wasn't totally
destroyed. Vintage NOS parts for you: none of your Chinese rubbish.
:-)