Path: ...!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Cursitor Doom Newsgroups: sci.electronics.design Subject: Re: Survivor! Date: Wed, 20 Mar 2024 18:04:59 +0000 Organization: A noiseless patient Spider Lines: 29 Message-ID: References: <1qqpolx.1arp4xj1pmszxqN%liz@poppyrecords.invalid.invalid> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Injection-Info: dont-email.me; posting-host="310060558d2465d63d9674dbe5cc4b40"; logging-data="1718713"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/909yDW8eiVXfcgOyZPB0TpqJ0NsZ/2nI=" User-Agent: ForteAgent/8.00.32.1272 Cancel-Lock: sha1:ONWueA5q0tllVH3V/w7FQNKHEK8= Bytes: 2373 On Wed, 20 Mar 2024 09:45:50 +0000, liz@poppyrecords.invalid.invalid (Liz Tuddenham) wrote: >Cursitor Doom 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. :-)