Abstract: A driver circuit that is responsive to an input AC voltage provides a variable drive signal to a load circuit, such as, a solenoid coil, for each actuation of a switch. A sine wave shaper produces a positive edge variably delayed square wave timing signal for a continuously clocked flip-flop. In response to the switch actuation, the clocked flip-flop generates a control signal for a selected period of time that is related to one cycle of the AC input voltage. The selected period of time occurs only during the positive portion of the input AC voltage cycle. The control signal is employed to generate the drive signal for the load circuit. The driver circuit provides switch bounce rejection equal to one cycle of the AC input voltage.

Abstract: A ratchet spinner comprises a centrally apertured disk with a serrated peripheral edge. An integral segmented collar surrounds the central disk aperture and protrudes axially therefrom. The segmented collar defines a plurality of flat sided flanges arranged tangentially with respect to the circumference of the central aperture.