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 flasher for incandescent lamps was found in Radio Electronics from the 80's. The circuit uses...
At each switch position, a diode is connected in series with the motor, thus causing a small...
We found this circuit with duty cycle adjustment in the May 1988 Radio Electronics magazine. The...