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.
We found this circuit in documentation from the 1980s. The transistors can be the BC558 and the...
This circuit simulates dusk by slowly dimming an incandescent bulb. It was found in the August 1998...
This configuration was found in an old technical documentation from the 70s, but it can be...