7 Sep
2002
7 Sep
'02
3:53 p.m.
Ah, yes; somewhere around here I also have some
"duo diode hi mu
triode" valves/tubes... There seemed to be a lot of interesting
valves/tubes used in television sets, with many more elements in them,
than those found in radios and stereo equipment.
Dou-diode-triodes were standard tubes in radios, actually.
I am pretty sure there was a quad triode produced, probably for the organ
industry. Quite a few very weird types were used (four plate dual
triodes, sextuple diodes, etc) - mostly used for frequency dividers.
William Donzelli
aw288(a)osfn.org