21 Apr
2005
21 Apr
'05
6:30 p.m.
> Sylvania also made some subsubminis - tubes in T1
bulbs, but they never
> sold either. A T1 bulb is 1.8 inch in diameter.
(correction to my post) Make that 1/8 inch.
There were some very small wire ended ones made for
proximity fuzes in
anti-aircraft shells. They are about the size of one of those small
neons. Someone in the USA has a stock of new ones and I wouldn't mind
getting a few to play with, but I've lost his address.
I have some of those as well. Etco (remember them?) used to sell them for
10 cents each. I miss Etco.
There were also some vacuum tube ics being produced
experimentally a
few years ago with a few hundred planar devices in one package.
Every five years someone rediscovers this.
William Donzelli
aw288 at osfn.org