Found in documentation from the 1970s, this circuit for resistive loads uses a trigger transformer. The components support modern equivalents.
This circuit is a handset receiver that picks up the signal emitted by a coil under the rug or...
This circuit uses a capacitor to store energy. The capacitor is charged by closing S1 by a moment. Them,...
This circuit filters low frequency noise from the turntable motor. We found it in a 1989...