This circuit was found in the July 1978 issue of Radio Electronics magazine. The circuit uses a common digital voltmeter as the indicator. The sensors are integrated circuits of the time.
This circuit is from a manual of FETs of 1977. The FET can be the BF245 or MPF102 and the relay is of...
The transistor in this project found in the July 1994 issue of Electronics Now magazine can be any...
This single pulse generator, loss detector, or peak detector was found in an old General Electric...