| 摘要 |
The sensor includes gps. of MR elements arranged on a non-magnetic susbtrate for connection to a detect and sense magnetic information recorded on a number of different dia. encoder wheels. Each dia. wheel may have a different number of pieces of magnetic information recorded at corresp. different wavelengths on a circumferentially running track located on the circumferential face of the wheel. The MR sensor includes an additional MR element arrangement for detecting and sensing index magneti Information recorded on an additonal circumferentially running track located on the circumferential face of the wheel. The connection arrangement of the MR elements is such to form external power supply connection terminals which have a width larger than the width of the MR elements covering a portion of the substrate surface to form a heat sink to eliminate thermal gradients from developing across the susbtrate. |
