Patent ID: 8664943

Claim:
A position detecting apparatus, comprising: a ring-shaped or linear magnetic flux source in which opposite magnetic poles are alternately arranged at an equal pitch; a Hall IC used in combination with the magnetic flux source, wherein the Hall IC includes: two Hall elements placed at a distance from each other; a protective film placed on magnetic sensitive portions of the respective two Hall elements and configured to cover the magnetic sensitive portions; a thin-film magnetic plate placed on the protective film to cover the magnetic sensitive portions of the two Hall elements; a first circuit generating a sum signal of outputs from the two Hall elements; and a second circuit generating a differential signal of the outputs from the two Hall elements; a first Schmitt circuit comparing an output signal of the first circuit and a Schmitt level to output a comparison result; a second Schmitt circuit comparing an output signal of the second circuit and a Schmitt level to output a comparison result; and a direction output circuit receiving the comparison results from the first and second Schmitt circuits and generating an output concerning a direction.