This 80's circuit turns off a TV or other appliance after a set time. The base is a 555 IC and the relay is according the supply.
This is a configuration much explored by assemblers, being found on this site in dozens of similar...
This circuit can control two loads and is also equipped with a light sensor for its trip. The...
The transistors of this circuit may be the BC548 or BC549 and its power supply can be performed...