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.
I found this circuit on a December 1976 Radio Elettronica. The Italian magazine no longer exists, but...
We found this circuit in the 1977 National Semiconductor Audio Handbook. The circuit produces a...
In the figure we have the basic configuration of a regulator for 12 V x 1 A suggested by Motorola in...