| 摘要 |
PURPOSE: A magnetism sensor device which obtains output voltage waveform which has one peak to each of a magnetized section is provided to individually detect width and magnetism, even if a magnetized section passes a detecting area in order. CONSTITUTION: A magnetism sensor device comprises a plurality of magnetic sensing parts(1211,1221,1231). A plurality of magnetic sensing parts is side by side arranged to one-direction. A magnetic sensing part of the magnetic reluctance element is arranged on a plurality of magnetic sensing parts. A magnetic detector is connected in parallel between the voltage-input lead and ground terminal. A differential amplification circuit is performed by the differential amplification processing.
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