Dc motor driving circuit

Details Dc motor driving circuit Dc motor driving circuit

H - Electricity

02

P

318/103

H02P 7/06 (2006.01) H02P 6/08 (2006.01)

Patent

CA 1170712

ABSTRACT OF THE DISCLOSURE A brush-less dc motor driving circuit is disclosed, wherein a variable constant current source is connected in series with motor windings, and motor torque proportional to motor currents is adjusted by controlling current value of said variable constant current source. Further, a supply voltage control loop is provided, so that power loss at the variable constant current source becomes minimum.

370857

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