This guitar effect circuit was found in a 2002 documentation. The circuit can be powered by a 9 V battery as it has low consumption. The connections of the input and output audio signals must be shielded.
Found in European documentation from the 1980s, this circuit was originally designed for computer...
This circuit, from a 303 Circuits from the 90s, uses a telephone pickup coil as a sensor to...
This circuit allows to increase the output power of a 741 as an amplifier. The circuit is from a...