21 Apr
2005
21 Apr
'05
6:33 a.m.
>>>> "Tony" == Tony Duell <ard
at p850ug1.demon.co.uk> writes:
> If things had worked out differently we might be
using
> ultraminiature electron tubes. Imagine! An entire flipflop in one
> package!
Tony> I nthe 1920's, Lowe (in Germany) made a radio receiver which
Tony> consisted of a tuend ciruit, headphones, batteries, and a
Tony> single glass envelope. That contained 3 triodes and all the R's
Tony> and C's.
There were several variations of that, actually. The device you'r
describing is the 3NF, a three-stage audio amplifier. There's also
the 2HF, a two-stage RF amplifier. I have one of those... should get
it going one of these days...
See, for example,
http://homepage.ntlworld.com/electricstuff/loewe.html
paul