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 a 1990 Electronics World magazine. The circuit can be mounted today by...
The inverter circuit shown in the figure can be used to power a fluorescent lamp in an emergency...
We find this circuit in an American 1980s documentation. Modern equivalent integrated circuits can be...