Hi: in this site have good information over space charge mode function in
conventional tubes (no special for 12 v).- This mode permit work the tubes
with low voltagfe in plate.

http://www.duntemann.com/12vtubes/12vtubesindex.htm

In the followings sites have a receiver projetc with 6BA6 tubes working with
12 V in plate.-
http://www.qsl.net/kl7h/GlowBug.htm

http://www.qsl.net/kl7h/12v.htm

REgards from Argentina

Heriberto
LU6DBU


escribió en el mensaje
ups.com...
Anybody know any tubes...st or gt shape preferred that will work on 12
volts plate voltage for small 1 tube regens...possibly a stage or two
of amplification also.

I know there were automobile radio tubes made that didnt need vibrators
but dont know any numbers myself.




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