Stepper motor driver circuit
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United States of America Patent
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Jan 16, 2018
Issued Date -
N/A
app pub date -
May 16, 2016
filing date -
May 25, 2015
priority date (Note) -
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Abstract
The stepper motor driver circuit controls driving of a stepper motor. The stepper motor driver circuit generates a driving current having a pseudo-sinusoidal waveform that varies stepwise every one period of a reference clock signal and makes the waveform of the driving current vary in response to a measurement value of an exciting voltage on a coil of the stepper motor at a time when the driving current is zero.
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