DRIVE CIRCUIT FOR STEP MOTOR

摘要

DRIVE CIRCUIT FOR STEP MOTOR : A drive circuit for a step motor, where the stator windings of the step motor are in each case connected in series to a diode and where a capacitor is connected in parallel to the series of diode and winding. The above element is provided with power from a d.c. source via a thyristor switch. The circuit provides that upon firing of a thyristor the previously current conducting thyristor is switched off. This construction allows the reliable operation of step motors and a holding current can still flow up to the moment of switching to another winding.