06-02-2025, 02:49 PM
It was a bargain, so 980 extras didn't matter. Some Top Hat rectifiers (unmarked) from them had reverse polarity! Such fuse blowings!
ft tester
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06-02-2025, 02:49 PM
It was a bargain, so 980 extras didn't matter. Some Top Hat rectifiers (unmarked) from them had reverse polarity! Such fuse blowings!
06-02-2025, 04:08 PM
(06-02-2025, 02:49 PM)Mike Watterson Wrote: It was a bargain, so 980 extras didn't matter. Some Top Hat rectifiers (unmarked) from them had reverse polarity! Such fuse blowings! Heck of a bargain, especially since I don't remember using any of them having become employed shortly thereafter & being rich enough to buy stuff with markings on. Top Hat rectifiers: it's a while since I've seen one of those. I don't think I've ever encountered a reverse polarity one. The ft test (continued) has progressed this afternoon, with a 3 position switch added. And it, and the switch, still work. The alternative variable capacitor has a threaded mounting boss: precisely the same diameter as a pot mounting boss. Bit of a shame, therefore, that the thread is a different pitch. The various el cheapo dvms I connected to a battery this afternoon proved impressive in their lack of agreement about the voltage. (06-02-2025, 02:49 PM)Mike Watterson Wrote: It was a bargain, so 980 extras didn't matter. Some Top Hat rectifiers (unmarked) from them had reverse polarity! Such fuse blowings! I doseem to remember, from a data book I have rather than experience, that some types were produced with the normal polarity reversed. I have never known the reason though.
Yesterday, 08:21 AM
Still available. For example https://www.diodemodule.com/stud-rectifi...n1183a.pdf which is available in standard and reverse polarity.
No idea why. It seems a recipe for confusion.
Yesterday, 02:54 PM
"It seems a recipe for confusion." Or an easy bridge rectifier.
I want a PNP valve!
8 hours ago
(Yesterday, 02:54 PM)PerdioPal Wrote: "It seems a recipe for confusion." Or an easy bridge rectifier. Or an almighty bang. Inadvertently put them into a full wave rectifier and shove the wrong potential up the smoothing capacitor and any attached circuits (before the smoothing cap vents its contents that is). |
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