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.
The gain of this amplifier is 10 times and the excursion to the output voltage is 6.0 V (peak to...
We found this circuit in a 1968 US documentation. The power FET is a component of the time and the...
This circuit, from an old Argentine publication, uses a slightly different symbology than we are...