High impedance stage (CB20564E)

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

Signal Generator (CB24108E)
This small signal injector generator was found in the February 1971 issue of Radio Electronics magazine....
Morse Code Practice Oscillator (CB8793E)
This circuit that generates signals between 1.5 and 2 kHz was found in a documentation from the...
Current Drain MC34071 (CB15289E)
Other operational Amplifiers in the series, such as the MC34072, MC34074, MC35071, MC35072,...