Relay shield (CB21694E)

This relay driver or relay shield for relays up to 100 mA can operate with voltages from 9 to 12 V or even from 5 V with sensitive types.

Voltage Follower CA3140 (CB15502E)
In the figure we have a typical voltage follower. In a voltage follower the voltage gain is...
Power Control (Dimmer) (CB435E)
In the original circuit a 40431 quadrac is used, but this is not a common component today....
Two-phase motor drive (CB20792E)
This circuit was found in a Motorola documentation from the 70s. The integrated circuit is from...