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.
As part of a larger project, we found this modulation meter in the August 1994 Electronics Now...
This circuit was found in an 80's Electronic Engineering. The circuit uses operatives of the time...
This circuit is an improvement of the previous one, with the use of two transistors produces a...