| 摘要 |
PURPOSE:To enhance the efficiency and to reduce the size of a motor by switching the current flowing direction of a stator winding by the output of a Hall element which detects the rotating position of a rotor. CONSTITUTION:A stator winding 10 wound on a bobbin 11 is mounted on a stator core 1, and pole separating grooves 4, 5 are formed on the core 1, thereby forming a stator. The rotor 13 is formed of a rotational shaft 14, a rotor core 15 and permanent magnets 16, 17. Further a Hall element 18 for detecting the rotating position of the rotor 13 is provided on the core 1. When the thus constructed motor is driven, ON or OFF states of transistors 21-14 for switching are controlled through comparators 19, 20 by a signal from the element 18, the current flowing direction of the winding 10 is switched to rotatably drive it. The output voltage of a DC power source 15 can be arbitrarily varied to arbitrarily alter the rotating speed. |
