| http://www.w3.org/ns/prov#value | - A power control circuit for supplying power to the winding of a stepping motor, including a source of D.C. voltage, a capacitor, means for switching the motor winding intermittently across the capacitor, a step-down transformer, a chopper between the D.C. source and the input of the transformer, a rectifier between the output of the transformer and the capacitor, and substantially resistance-free
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