Motor drive circuit, method for detecting single phase DC motor rotation direction and method for starting motor
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United States of America Patent
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May 15, 2018
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N/A
app pub date -
Aug 20, 2015
filing date -
Sep 22, 2014
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Abstract
A motor drive circuit including a back electromotive force detecting module and a processing module is disclosed herein. The back electromotive force detecting module is electrically connected to a single phase DC motor and is configured to detect a back electromotive force of the single phase DC motor and to output a detecting signal correspondingly. The processing module is electrically connected to the back electromotive force detecting module and the single phase DC motor. The processing module is configured to determine the rotation direction of the single phase DC motor according to the detecting signal and a hall signal outputted by a hall element located in the single phase DC motor, and is configured to control the single phase DC motor.
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