30 Aug
2008
30 Aug
'08
11:37 a.m.
bfranchuk at jetnet.ab.ca wrote:
Actually, 24 of the 41 types of space charge tubes had filament currents ranging from only
150 - 200 mA. The 12DL8 had the highest at 550 mA.
Well, in case
you wanted proper space charge tubes for
your digital logic experiments.
The problem with them is HUGE filament current.
Pencil tubes look to be fun to play with, but you never
hear about them cause of the war.
http://home.netcom.com/~wa2ise/