21 Jul
2015
21 Jul
'15
1:47 a.m.
On Tue, 21 Jul 2015, tony duell wrote:
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:
http://computermuseum.informatik.uni-stuttgart.de/dev_en/lgp30/lgp30.html
Note: the height is about 60cm, power rating IIRC somewhere between 500
and 1000W!
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).
Christian