Position sensor

摘要

A position sensor is provided which has a magnetically sensitive circuit (22) which is arranged in a first plane (70). A portion of the circuit is situated on one side of a first axis (81) and the other portion of the circuit is located on the other side of the first axis (81). A moving element having two object tracks (12 or 14) rotates about an axis (26) which is directed parallel to the first plane (70). The two object tracks (12, 14) are separated by a second plane (82) which is perpendicular to the first plane (70) and coincides with the first axis (81). The first and second object tracks comprise a plurality of first and second portions (50, 52) which are arranged in a complementary fashion relative to one another, with the result that a magnetic portion of the first track is situated opposite a non-magnetic portion of the second track, and vice versa. The movement of the first and second portions past the sensor varies the resistance in a portion of the circuit, as a result of which an output signal is prescribed which represents the position of the rotatable element with reference to the sensor (Fig. 7). <IMAGE>