Found in a 1968 US documentation, this circuit shows how to use the resistance-scale multimeter to analyze the dwell angle of old platinum cars.
This fuzz distortion circuit was found in old RCA documentation. Equivalent transistors may be...
This circuit with transistors of the time was found in the magazine Radio Electroinics of June of...
Several versions of this circuit can be found on this website. This makes use of FETs that can...