Brushless dc motor driving circuit

Details Brushless dc motor driving circuit Brushless dc motor driving circuit

H - Electricity

02

P

318/103

H02P 6/20 (2006.01) H02P 6/18 (2006.01)

Patent

CA 1192257

ABSTRACT OF THE DISCLOSURE A driving circuit for a brushless DC motor is connected to energize the plurality of stator windings by detecting induced voltages in windings adjacent an energized winding, mixing these detected voltages in predetermined ratios, and comparing the mixed voltages with a reference level, in order to provide switch controlling signals fed to switches arranged between each of the plurality of stator windings and the energization source. Individual detectors to detect rotor position corresponding to the winding being energized are not required and delay circuits used to provide sequential pulses are also eliminated thereby promoting fabrication of the invention using integrated circuit technology.

424806

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