| 摘要 |
PURPOSE:To enable to reversely rotate a motor with a simple structure by providing switching means for altering the direction of a current input to position detecting means. CONSTITUTION:Position detection signals from Hall elements 12, 13 are amplified by an amplifier 14, a driver 17 sequentially supplies a current to pole coils of the stator of a motor 11 according to the amplified position detection signal to rotate a rotor in one direction. When a low level or high level is input to a terminal 21, a converter 20 alters the direction of a current input to the elements 12, 13. Accordingly, a motor 11 can be normally or reversely rotated by altering the level of the signal input to the terminal 21. |
