| 摘要 |
<p>An electric motor (1) of the brush less type includes circuit means (15), connected to the stator coils, comprising a commutation circuit including a thick film circuit 11 formed on a metal substrate (3) comprising a portion of the housing. Magnetic field sensors 12-14 are also surface mounted on the thick film circuit for sensing the rotor position together with a silicon controlled rectifier circuit supplying DC to the motor. External connection to a current switching device is avoided and radio frequency interference is reduced. <IMAGE></p> |
