This 1950s audio amplifier uses output tubes of type 1625 in its output stage. The Class B circuit provides a few watts of power and uses transformers that are not readily available today.
This transistor tester was found in a 1980 publication. The transistor can be the BC548 and the...
It can be obtained from Mouser Electronics the new 1,500 W RF high power transistor MRF1K50H fro m...
We found this circuit in a 1968 Electronics World. The potentiometer should be set to trigger the SCR...