21 Jul
2015
21 Jul
'15
2:52 a.m.
But yes, selenium rectifiers rarely work now
(although there are exceptions)
and when they fail they can take out the mains transformer. And they smell
horrible (think of school dinner cabbage!)
Huh? All devices with selenium rectifiers that I/we own are OK. And a
selenium rectifier only fails if overloaded. See for example the power
supply of the LGP-30: And all my radio/TV sets with selenium rectifiers are
OK, too. I had to
replace one in my TV as it had a too high resistance, but only because I
didn't know at that time that I could re-fasten the nuts of the rectifier
(selenium rectifier plates can suffer from contact resistances).
The ones I mainly have are those flat 'contact cooled' ones that you bolt onto
the chassis. You can take those apart and bend contacts, etc, but most of the time
I replace them with a suitable silicon device.
-tony