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.
We find this circuit in an old American documentation. It can provide a 25 dB compression in a...
This circuit is from a technical manual of the 80's. The operational ones are of the time like the...
This circuit was obtained from a Popular Electronics of 1994. The magazine no longer exists in its...