This circuit is from a Radio Electronics from July 1965. The circuit uses components from the time also controlling a servo from the time. The power supply is 28 V.
This is an amplifier with one of the first integrated circuits available, the CA3020 which was...
This circuit was obtained in a 1964 Electronic Design. The transistors are from the era and the...
This low power circuit for the FM band was found in a spy book from the 90s. The tunnel diode is...