This circuit makes use of a mechanical delay line to produce the reverberation effect. This is a '80s setup, showing both channels for a stereo system.
This circuit was found in the Optoelctronics Sourcebook from Texas Instruments. The circuit has a...
We found this circuit with duty cycle adjustment in the May 1988 Radio Electronics magazine. The...
This 2.5 A power supply was found in a 90's QST magazine. The power transistor must be mounted on a...