This Star Trek red alert circuit was found in the July 1990 issue of Radio Electronics magazine. The power transistor must be equipped with a heat sink.
This small transmitter has an RF amplifier stage with coupling made from the central socket of the...
Found in a 1965 Motorola documentation this circuit drives magnetic-type fuel pumps found in cars...
This circuit simulates a multi-position switch using programming buttons. The circuit is from an...