High impedance stage (CB20564E)

This high input impedance amplifier stage was found in a 1963 documentation. The transistor germanium of the time.

Product detector (CB9684E)
Found in Motorola documentation from the 1980s, this circuit employs an integrated device from...
Regenerative MW Receiver (CB18287E)
This simple regenerative receiver for the medium wave range is from a 1956 Sylvania publication. Details...
DC motor proportional control (CB7283E)
This bidirectional motor control was found in an 80's Electronic Engineering. The circuit uses a...