Based on the MC1488 or MC1489 operational amplifiers, this circuit has a 5000V isolation driving a 2N3055 transistor for a high-power signal. The receiver is a common phototransistor.
This source circuit was obtained in a 1976 publication for radio amateurs. The transistors can be...
We found this circuit in Radio Electronics Special Projects from 1992. The circuit turns on the...
This circuit takes advantage of the noise generated at the junction of a zener diode of any type....