Two-input amplifier (CB21661E)

The critical component of this 1967 amplifier is the driver transformer. The circuit has both high and low impedance input.

First line selector (CB9414E)
This interesting circuit for analog TV selects the first line of a frame. The circuit was found in a...
First pulse preserver (CB9259E)
This circuit was found in a 1967 EEE. The components are from that time, but the circuit can be...
Symmetrical regulator (CB8698E)
Found in a 1968 documentation, this circuit provides symmetrical voltages determined by component...