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 found this circuit in a 1992 magazine, but it can be easily assembled today because the...
This circuit has been found in an old documentation, but can be used as input shield for current...
In the figure we have the circuit of a sweep generator obtained in an old publication. The central...