Stepping motor driving circuit

Details Stepping motor driving circuit Stepping motor driving circuit

1983-06-24

1984-12-04

Truhe, J. V.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02K 2904

Patent

active

044866968

ABSTRACT:
A stepping motor driving circuit includes a plurality of switching transistors having their emitter-collector paths connected to the corresponding ends of motor coils, a plurality of diodes having their anodes connected to the above-mentioned ends of the motor coils and their cathodes connected to a common terminal, and a braking circuit connected between the cathode of the diodes and the other end of the motor coils, in which the switching transistors are sequentially turned ON to permit excitation currents to pass through the corresponding motor coils. The braking circuit has a variable effective impedance.

REFERENCES:
patent: 4129816 (1978-12-01), Feldy et al.
patent: 4164697 (1979-08-01), Everett

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