Brushless motor drive circuit

Details Brushless motor drive circuit Brushless motor drive circuit

H - Electricity

02

P

318/94

H02P 6/14 (2006.01)

Patent

CA 1292036

ABSTRACT OF THE DISCLOSURE A brushless motor drive circuit includes a plurality of Hall elements for detecting magnetic flux changes of a rotating rotor magnet. A drive signal generating circuit generates drive signals applied to the stator windings of the motor. Each of the drive signals has a pair of slanted edge portions and a relatively flat portion interposed between the slanted edge portions which are directly formed from said detected flux changes. The circuit is effective in preventing acoustic noises during phase switching.

518165

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