This circuit produces a signal that has the waveform of the sound produced by or near the banjo. The circuit is from an 80's American documentation. The signal must come from an ordinary guitar.
This circuit was found in a 1985 English magazine, but it can still be easily assembled, as the...
This circuit was found in a 1980s documentation. The low voltage circuit uses a PUT. Transistors can...
Found in Popular Electronics from the 90s, this circuit serves to indicate the output level of a...