"N_Cook" wrote in message
...
Arfa Daily wrote in message
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"TwoMuttHeads" wrote in message
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On Jan 9, 8:58 am, "N_Cook" wrote:
Firstly are they synomynous?


Would the English military have had access to these
size
and sort of ratings, of the later rectifiers, in 1940s,
they could have been heatsinked

Copper oxide was used for quite a while.


Yes. I was going to say exactly the same thing. I think
that the original
"metal" rectifier, was a copper oxide device, rather than
selenium. It's
been a long time ago now, but I seem to remember back in
my yoof when I
was
an apprentice, that we talked of metal rectifiers and
selenium rectifiers
as
different entities.

Arfa




I'm trying to find if any sort of (presumably)
non-thermionic rectifier
could fit in a space 95x70x12 mm in the 1940s.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals
list on
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Are you trying to figure out what was in there
originally or just want something to fit? I suspect the
former since a silicon rectifier, probably with series
dropping resistor would work to replace a metal-oxide
rectifier.
It seems to me that selenium stack rectifiers were not
used before about 1945. Copper oxide rectifers were used in
"battery eliminators" and were the standard rectifiers in AC
meters. I don't think either is made any more but either can
be replaced with silicon rectifiers.


--

--
Richard Knoppow
Los Angeles
WB6KBL