| 摘要 |
PURPOSE:To suppress the peak of induced voltage below the designed stipulated value of a driving circuit even if the revolution of a brushless motor is increased, so as to facilitate the design of the driving circuit of a brushless motor, concerning a brushless motor, especially, the coil structure of a stator. CONSTITUTION:The coil 12a wound on each pole of a stator 12 is composed of a plurality of coils 12a-1, 12a-2,..., and this is equipped with a coil changeover circuit 6 which changes the end of winding of one coil over to the start 12a-2s of the winding or the end 12a-2e of winding of the other coil 12a-2, and it is so constituted as to increase the number of total windings of the coil 12a of each pole of the stator 12 by changing over the connection of the coil 12a of each pole of the stator 12 by a coil changeover circuit 6. |
