This circuit is from an old Japanese publication of 1962. The circuit uses two batteries, one for the filaments of the tubes and the other one of high voltage for the plate circuits.
This circuit was found in a Motorola documentation from the 70s. The components are from the time,...
We found this circuit in an old documentation from the 70s, but it can be assembled with more...
August 2016 - It can be purchased from Mouser Electronics the new digital isolators ADuM120N and...