Re: Si-diodes in Second World War radar & Communication equipment
- From: whit3rd <whit3rd@xxxxxxxxx>
- Date: Mon, 14 Apr 2008 17:45:21 -0700 (PDT)
On Apr 12, 9:24 am, John Fields <jfie...@xxxxxxxxxxxxxxxxxxxxx> wrote:
On Sat, 12 Apr 2008 17:51:10 +0200, "ronwer"
<neo.dymium.removethisfi...@xxxxxxxxxxxxxxxxxxxxxx> wrote:
Hi!
I am doing a study into the early use of silicon diodes in radar and
communication equipment during the Second World War.
1N23 is a good place to start.
My (early seventies) reference says 1N23 was Ge(germanium),
and the lowest-listed Si diode is 1N53. In any case, germanium
or silicon diodes were fragile point-contact things, and wouldn't
have been rugged enough for portable or aircraft use.
I think the development of pellet diodes happened AFTER WW II.
Quartz stabilization of radios was a major improvement,
and aircraft radios benefited greatly. German fighter aircraft
directed by ground-radar operators were the most effective
defense against British strategic bombing...
The "1N" designation for semiconductor diodes comes from JEDEC
which was only created in 1958, a decade after WW II.
.
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