Found in 1965s General Electric documentation, this circuit is intended for the control of servos connected to the power grid. Equivalent modern components can be employed.
Here we show how two 4017s can be cascaded to count above 10. The circuits are driven by a square...
The circuit in the figure represents a typical application of a phototransistor exciting a relay...
This circuit, in fact, what it does is a reactivation of the batteries through a brief pulsating...