Magnetic position detector

摘要

Magnetic members are arranged straight and are face to face with spin-valve type magnetoresistive elements. Magnetic pole faces thereof which can be face to face with the spin-valve type magnetoresistive elements have different magnetic polarities from neighboring magnetic pole faces. The magnetic members are arranged in equal pitch. Each magnetic member is separate from a neighboring magnetic member. X/P is from 40% to 60%, X is the length of each magnetic member along an arrangement direction of the magnetic members, and P is the arrangement pitch of the magnetic members.