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.
Data applied to the input of this circuit is shifted one ceII to right following the clock pulse....
This 80's circuit uses an audio amplifier to obtain a symmetrical source from a single source. The...
This configuration presents a negative resistance caracteristic such as the one found in...