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 multivibrator has its frequency controlled by a crystal. Other frequencies can be generated by...
This circuit was suggested by a Radio Shack publication from the 1980s. The purpose of this...
With the help of a signal generator, this circuit makes it possible to test inductors and...