| 摘要 |
PURPOSE:To simplify the construction of a DC motor and to facilitate the wirings by switching a current path with a position detector. CONSTITUTION:A pulse signal A is generated by the rotation of a rotor magnet 2, and the relative position between a rotor magnet 2 and a detecting coil 3 can be detected by the falling edge of this pulse signal A. A switching controller 22 of a current converter 13 is so selected in the internal state that drive transistors 6, 7, 8 become the prescribed energizing state by the timing of generating the falling edge of the signal A, vary the internal state whenever a trigger signal E is input to sequentially switch the energizing states of the transistors 6, 7, 8. Thus, the current paths to 3-phase coils 3, 4, 5 are controlled to be switched in response to the rotation of a rotor magnet 2, and the magnet 2 is rotatably driven in the prescribed direction. |
