Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: john larkin Newsgroups: sci.electronics.design Subject: Re: electrical deaths Date: Sat, 30 Nov 2024 08:14:50 -0800 Organization: A noiseless patient Spider Lines: 57 Message-ID: <18emkjt9r5c2etbc577s3qa276d50el2j4@4ax.com> References: <1r3qb00.1fgzoxb1tmjhzN%liz@poppyrecords.invalid.invalid> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Injection-Date: Sat, 30 Nov 2024 17:14:51 +0100 (CET) Injection-Info: dont-email.me; posting-host="29885b941dd035e97fa26ef25062c9e6"; logging-data="1924677"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+dUrbOGfxymXrEIzQLlHuw" User-Agent: ForteAgent/8.00.32.1272 Cancel-Lock: sha1:4Dt0R/G+L5YLbIabrkkGtNvSuq4= Bytes: 3963 On Fri, 29 Nov 2024 21:33:36 -0500, "Edward Rawde" wrote: >"Don Y" wrote in message news:viaje1$m7b3$3@dont-email.me... >> On 11/28/2024 11:41 AM, Edward Rawde wrote: >>> "Martin Brown" <'''newspam'''@nonad.co.uk> wrote in message news:via7ui$kcu0$1@dont-email.me... >>>> On 28/11/2024 13:41, Carlos E.R. wrote: >>>>> On 2024-11-28 13:14, Martin Brown wrote: >>>>> >>>>> ... >>>>> >>>>>> One of my friends at university (at a top level institution) found himself holding a live plug a on Jesus lead left behind by >>>>>> a >>>>>> previous graduate student. The burns from that were horrific. Once attached you can't let go or move and burning human flesh >>>>>> doesn't smell good. He was probably only on for 30s before someone realised and disconnected him. >>>>> >>>>> What's a "Jesus lead"? I tried to google, but what I find are songs. >>>> >>>> A mains cable with a plug on each end. In this case plugged into a 4 way extension block under a rack full of electronics in a >>>> top >>>> physics lab! >>>> >>>> So named because it gets you closer to God. >>>> >>>> Google seems singularly unhelpful on this one... >>> >>> I once went into radio shack in the US and asked for an extension mains lead. >>> I got a blank look, so I pointed to what I wanted and learned that I should have said power cord. >> >> It was common, in the days of tube-based TV sets, to salvage the power >> cord ("cheater") from an old set. The cord on the set was affixed to the >> back cover to provide an interlock so you couldn't operate the set with >> the cover off. The "cheater" eliminated that restriction -- at a bit >> of risk to the user. >> > >I don't think the back of our tube-based TV was ever on. >While it was under warranty, service people seemed to arrive monthly. >When it was out of warranty I learned a lot about the practical side of electronics. >Eventually it ran reasonably reliably until the picture tube gave up so my father and myself replaced the A66-140X > >https://www.google.com/search?q=beovision+3400+pdf > >I don't think the UK ever had any tube only colour TVs, they were all hybrids (tubes for high power / high voltage) and >semiconductors. >In the above case all discrete except for one integrated circuit (line oscillator). > We (and I) had giant all-tube color TVs with three electron gun/shadow mask CRTs, power hogs and the color quality was poor. They had to be degaussed after installation. It was fun to wave a magnet near the screen. If you got too close, it would leave a color distortion spot so degauss again.