| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a magnetic sensor having reduced variations in a position where a horizontal direction magnetic field is zero.SOLUTION: A permanent magnet having a triangular upper part cross section is used instead of a rectangular type flat plate shaped permanent magnet used for the conventional magnetic sensor. The present invention relates to a magnetic sensor using a bias permanent magnet 1 and a plurality of magnetoresistance effect elements 2. The bias permanent magnet 1 has a triangular upper part cross section, and includes an N pole or an S pole on an upper vertex side and an opposite pole, relative to the pole on the upper vertex side, on a bottom side. The magnetoresistance effect element 2 is positioned above the triangular upper vertex and is arranged on a plane C1 orthogonal to a median line M2. The plurality of magnetoresistance effect elements 2 are arranged on a parallel straight line C2 away from the median line M2 by only a distance x.</p> |
