This interesting transistor circuit has several effects and an included amplifier. The circuit is monophonic and powered by standard batteries. The number of keys can be changed.
This old 4-channel circuit was found in the December 1994 Electronics Now magazine. The circuit uses...
The 78xx series is manufactured by several semiconductor companies that present ideas for use in...
This circuit that converts very low currents into voltage was obtained in the 80's used component...