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 an old Mullard (Philips) documentation. The load must be according to the...
This circuit is from a Radio Electronics from October 1970. The circuit uses transistors from that...
Obtained from a 1996 documentation, this circuit uses common components and has a voltage gain of 200...