3-way control (CB7047E)

This is a simple circuit to control a set of lamps from 3 different points. We found it in an old Popular Electronics.

Tremulo circuit (CB10115E)
This circuit was found in a National Semiconductor manual from the 1970s, appearing in articles and on...
Motor reversal with DC control (CB8952E)
Found in 1965s General Electric documentation, this circuit is intended for the control of servos...
Display drive 4033 (CB7554E)
We found in this American documentation this circuit for activating common cathode displays. In it we...