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  • Magazine Transistor Tester Lives Again

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    Magazine Transistor Tester Lives AgainOne of the lost pleasures of our modern world is the experience of going shopping at a grocery store, a mall, or a drugstore, and finding this month’s electronics magazine festooned with projects that you might like to build. Sure, you can find anything on the Internet, but there’s something to be said about the element of surprise. Can any of those old projects still be of interest?[Bettina Neumryr] thinks so. She has a hobby of finding old magazine projects and building them. Her most recent installment is a transistor tester from the June 1983 issue of Everyday Electronics.The tester was quite a neat job for 1983, with a neat case and a PC board. It measures beta and leakage. There’s an analog meter that can measure the collector current for a fixed base current (beta or hfe). Leakage is how much current flows between emitter and collector with the base turned off.In 1983, we’d have loved to have a laser printer to do toner transfer for the PC board, but of course, that was unheard of in hobby circles of the day. The tester seemed to work right off the bat, although there was a small adjustment necessary to calibrate the device. All that was left was to put it in a period-appropriate box with some printed labels.We loved the old electronics and computer magazines. Usually, when we see someone working on an old magazine project, it is probably not quite a literal copy of it. But either way is cool.youtube.com/embed/R4AF_30SUbA?…hackaday.com/2025/10/27/magazi…
  • S'intitola

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    S'intitola«20.000 LEGO sotto i mari»#film #barzellette
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    @Gina https://freiesoftware.gmbh
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    @tinturadiodio @oblomov @Azalais maledetti boomer che hanno modo di andare in pensione alle spalle nostre! :Dperò le cose fatte coi filati sottili sono più belle!per carità, per qualche cosa specifica a volte anche i filati grossi hanno il loro perché, ma per la maggior parte dei capi d'abbigliamento (maglioni, calze, ecc.) col filato sottile vengono meglio!(non so se dirti del posto dove abbiamo trovato dei filati deadstock che in teoria sono da macchina, e quindi sono più sottili della maggior parte dei lace weight)