Drive circuit for step motor

Details Drive circuit for step motor Drive circuit for step motor

1982-01-25

1984-04-24

Rubinson, G. Z.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 318345C, 318345G, H02K 2902

Patent

active

044450770

ABSTRACT:
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. Thus step motors can reliably be operated, where up to the switching to another winding still a holding current is to flow.

REFERENCES:
patent: 3365636 (1968-01-01), Baker
patent: 3555389 (1971-01-01), Opal
patent: 3845379 (1974-10-01), Kawamata et al.

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