Yeah, I've posted that picture on a few other forums as well!
The original source is here:
http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/Digital-Roehrenuhr.htm
50A of heater current!
EDIT:
Oh, I have read that this person's next project is a copy of a Tektronix TEK570 curve tracer, and is looking for several valves and offering Siemens rotary switches in exchange.
For those who read German:
http://www.f23.parsimony.net/forum45451/messages/119617.htm
The original source is here:
http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/Digital-Roehrenuhr.htm
50A of heater current!
EDIT:
Oh, I have read that this person's next project is a copy of a Tektronix TEK570 curve tracer, and is looking for several valves and offering Siemens rotary switches in exchange.
For those who read German:
http://www.f23.parsimony.net/forum45451/messages/119617.htm
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