H-BRIDGE DRIVE CIRCUIT FOR STEP MOTOR CONTROL
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United States of America Patent
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app pub date -
Mar 30, 2010
filing date -
Mar 30, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A drive circuit for step motors with bifilar windings is provided in which both parallel and series winding configurations for the stator coils are selectable by a motor controller based on the motor speed. For low speeds a series configuration is selected, while for higher speeds a parallel configuration is selected. Dynamic torque is optimized by the selection for more efficient motor operation with less drive current.
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