With this circuit any number of 4017 integrated circuits can be connected in series. The circuit is from a Radio Electronics from April 1989.
This common circuit with two transistors was found in an old French publication. The supply can be...
The simple speed control for DC motors shown in the figure can control loads up to 2 amps. The...
DC motors of 6 to 12 volts and currents of up to 2 amps can be controlled with this shield...