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.
With only one integrated circuit and few additional components, this amplifier has an output power...
For the 7 to 10 MHz band L1 is formed by 3 turns of 22 to 28 AWG wire in a ferrite core 15 to 20...
The circuit shown in the figure, activates a bar of 4 LEDs with an audio signal applied to its...