Using the 4001 integrated circuit, this latching relay can employ any general-purpose transistor. The power supply is according to the relay with voltage up to 12 V.
In the figure we have the circuit of a sweep generator obtained in an old publication. The central...
This 1965 General Electric circuit uses a "Thyrector" that is a suppressor of the time. The...
This interesting circuit from 1967 documentation uses three series lamps to regulate the voltage...