| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a position sensor capable of performing precise position detection and grasping a current position without detecting a base point even when a power source is turned off at any position.SOLUTION: A position sensor 10 includes a detector 13 in which a magnet 11 and a magnetic element 12 are disposed apart from each other, and a magnetic material board 14 arranged so as to pass through between the magnet 11 and the magnetic element 12. The detector 13 and magnetic material board 14 can be relatively slid along the longer direction of the magnetic material board 14. The width of the magnetic material board 14 varies continuously from one of the longer direction to the other.</p> |
