This is a diagram of a 1970s reel or tape recorder. It is an Italian Geloso recorder, quite popular at the time. The circuit is a reference for equipment recovery.
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...