We found in this American documentation this circuit for activating common cathode displays. In it we have the way to cascade the 4033 to drive two displays (dozens and units).
This circuit can be powered by 2 or 3 small batteries. The resistor can have values between 220...
These circuits from a May 1994 Electronics Now take advantage of the noise from the junctions of...
This network can be used in a sound project to control the tone. The circuit is from an...