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.
This power stage with two counterphase transistors and coupling transformers was shown in Radio...
This circuit tunes MW radios to apply the signal to a good audio amplifier. The circuit is from an...
This is another sampling and holding circuit found in a factory manual from the 1980s. The circuit...