Step motor driving circuit

Details Step motor driving circuit Step motor driving circuit

1982-07-09

1984-07-31

Dobeck, B.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02K 2902

Patent

active

044633017

ABSTRACT:
A step motor driving circuit having A-phase and B-phase exciting windings which are independently supplied with exciting current in a sequence of four states per step of the step motor. The driving circuit is capable of applying a large or a small current to each phase winding and the currents are applied in a sequence to result in a trapezoidal shaped exciting current. During a first state only one phase is excited and it is excited with the large current. During the second state the one phase is excited with the large current and the other phase with the small current. During the third state both phases are excited with large currents. During the fourth state the one phase is excited with the small current and the other phase with the large current.

REFERENCES:
patent: 3445741 (1969-05-01), Gerber

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