This 5 W transistor amplifier for the car was found in an English documentation from 1969. The transistors are from that time and the transformer is of a special type.
Found in 1967 General Electric documentation this circuit uses a PUT and a diac to generate 1 kHz...
We found this circuit in documentation from Linear Technology of the 80s. The circuit uses...
This 800 Hz sinusoidal oscillator was found in a 1970s American documentation. The transistor...