Patent ID: 6670732
Filing Date: 2003-12-30
Classification: H02K

Abstract:
A permanent magnet type stepping motor comprising (1) a stator having two-phase stator windings, and 12 pieces of stator main pole arranged side by side, the stator windings of one phase being wound around every other stator main pole among the 12 pieces of stator main pole, wherein when the stator windings of one phase are excited with a direct current, 3 pieces of N pole and 3 pieces of S pole are formed alternately on the 6 excited pieces of stator main pole; and(2) a rotor of a cylindrical permanent magnet magnetized in the circumferential direction so as to form Z/2 pieces of N pole and Z/2 pieces of S pole alternately, where Z is the number of rotor poles.