High impedance stage (CB20564E)

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

Fast Integrator (CB15890E)
The integrator in the figure is characterized by low input current and is based on an LM101A. C1...
Differential Multiplexer (CB5352E)
This circuit was found in an ancient American documentation. The integrated circuit is of the time...
Multipurpose Amplifier Module (CB13390E)
This circuit, from a 1976 documentation, amplifies signals from 100 Hz to 600 kHz with a voltage fan...