Oscillators part 3a - Vacuum Tubes -
Oscillators part 3a - Vacuum Tubes - #191
A special bonus episode following a question from the previous edition!
Vacuum Tubes or Thermionic Valves depending on where you are.....
World Radio History Website
https://www.worldradiohistory.com/ind...
1940 RSGB handbook
https://www.worldradiohistory.com/BOO...
Circuit diagrams here:
https://www.radiomuseum.org/