This typical voltage amplifier step with the 6J5 was found in a modern tube publication.
May 2017 - Mouser Electronics is announcing the availability of five new Breakout Boards from...
This circuit was found in an old European documentation. When R2 is cut off the circuit triggers...
The coils of this simple mid-wave radius are wound 28 or 26 on a 12 to 30 cm long ferrite rod and the...