22 Apr
2005
22 Apr
'05
10:44 p.m.
I am interested in a schematic, too. I think I have some of those
small wire lead tubes left. They are quite interesting. It would be
fun to do something with them.
I like radios but to keep this a little on topic are there any analog
computer designs that could be built with a small batch of small
tubes?
I recently built a 5-tube regenerative receiver for
the 49 meter band using
5678's for the 2 stage tuned RF amp, detector, and first audio amp. A 5676
serves as the final audio driver.
Performance is awesome, and it runs on batteries. Warm-up time is at most
3 seconds, nearly instant-on operation.
These tubes are only about 1 cm in diameter, and perhaps 4 cm long, with
wire leads (no pins, no socket needed).
--
Paxton Hoag
Astoria, OR
USA