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 circuit is from 1995 documentation. The power depends on the transformer, which in this case...
This circuit was found in an American 1980s documentation. It is a circuit that can be used to...
This circuit is based on an operational window comparator. We found it in a documentation from the...