Patent ID: 7071681

Claim:
A position detecting apparatus comprising: first and second main circuits being arranged to be adjacent to each other, being displaced to be opposite to a magnetized surface where different magnetic poles are alternatively arrayed in one direction, and being placed in a direction perpendicular to a pole array direction; each main circuit including: a magnetic resistance circuit having multiple magnetic resistance elements that output current according to magnetic field intensity of the magnetized surface; a power supply terminal provided in each magnetic resistance circuit; and an output terminal; wherein the multiple magnetic resistance elements are connected in series in the magnetic resistance circuit and arranged to be parallel to one another along a current path of each magnetic resistance element; and wherein the magnetic resistance circuit of each of the first main circuit and the second main circuit includes: a reference magnetic resistance element; an even harmonic correction magnetic resistance element with respect to a reference wave; and an odd harmonic correction magnetic resistance element with respect to a reference wave.