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 the February 1970 issue of Radio Electronics Magazine. It uses an RCA...
This power source can supply currents in the range of 100 mA to 1 A, depending on the transformer and the...
This circuit consists of a constant current source for charging 12 V batteries. The charge is...