This circuit was found in the September 1999 issue of Electronics Now magazine. The circuit is based on common operational circuits and produces various effects for the sound of guitars.
This circuit, which presents a certain danger and should be used with caution, was found in the...
This circuit with variable capacitance diode (varicap) is from a publication from the 90s. The...
This circuit, shown in the figure, consists of a variable gain amplifier with differential input...