Balanced Modulator MC1556G (CB14559E)

We found this circuit in Motorola's Linear Databook in 1990. The semiconductor component used is no longer common today.

Programmable Sequential (CB18156E)
This circuit works with small 5 V incandescent lamps but can be modified to operate with LEDs. The...
Game clock generator (CB7003E)
This circuit found in Radio Electronics can be used in games to produce a random pulse train. The...
Bridge photometer (CB12980E)
This photometer is based on a Wheatstone bridge that must be balanced by the linear potentiometer P1. The...