| 摘要 |
The invention provides a movable magnet type instrument able to reduce cost and an instrument device using this movable magnet type instrument. The movable magnet type instrument M1 has a rotor magnet 1 magnetized such that adjacent magnetic poles are poles different from each other; a pair of coils 5, 6 arranged around this rotor magnet 1 and having winding central axes C1, C2 crossing each other without being perpendicular to each other; control means 120 for processing an input signal based on a measured amount and supplying a driving signal mutually having a different electrical angle to each of the coils 5, 6 and rotating and operating the rotor magnet; and a pointer 9 for rotating the rotor magnet 1 as a driving source; wherein, when the number of magnetic poles of the rotor magnet 1 is set to n and an acute angle formed by crossing the winding central axes C1, C2 is set to r, the acute angle r is set to an angle calculated by 360/2n (n is a multiple of 2 equal to or greater than 4).
|
