This conventional 4 channel circuit with the 4017 and 555 was found in the November 1991 Radio Electronics magazine. The potentiometer can be 47k and it controls the speed of the effect.
This circuit allows the use of a common cassette to pass the tape recordings to other media with...
This small transmitter appeared in the March 1989 issue of Radio Electronics magazine. The...
This interesting sound effect circuit that produces the sound of bulls or Bull Horn was found in...