Found in Popular Electronics from the 90s, this circuit turns off an appliance at the end of the programmed time. The 12 V relay must have contacts according to the controlled current.
This is a circuit with the first commercial Darlington transistor, the 2N626. The circuit is from...
This circuit was found in a Maxim documentation from the 90s. It is valid for the lower income types...
We found this circuit in a 1971 documentation. The circuit can be assembled with more modern...