| 摘要 |
PURPOSE: To provide a highly reliable pulse generator for motor which can be improved in PG output and S/N without increasing its manufacturing cost and can reduce the influence exerted by the interference with the FG. CONSTITUTION: In a pulse generator for motor which detects the rotational phase of a motor 1 composed of a rotor equipped with a PG magnet 17 and stator in which a PG coil 18 is formed on a printed wiring board 4, magnetism collecting holes 21a and 21b are provided near the coil 18. The holes 21a and 21b can be formed through the board 1 or stopped in the board 4. It is preferable, in addition, to provide the holes 21a and 21b on both sides of the coil 18. |
