| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sensor capable of improving inspection accuracy. <P>SOLUTION: This device is equipped with a pair of magnetic detection elements 41a, 41b arranged in the mutually separated state at a prescribed distance, for detecting magnetism from a magnetism generator and outputting detection signals Sda, Sdb; and a differential amplifier 32 for outputting a differential signal Sm between the detection signals Sda, Sdb outputted respectively from each magnetic detection element 41a, 41b. In this case, the magnetic detection elements 41a, 41b having the same magnetic detection characteristic can be used. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
