the same time the right half of n pole excited by the winding a 13 repels the rotor magnet 104 of a polarity n rightwardly likewise an attracting force and a repelling force are exerted between the pole excited by the winding a 12 and the rotor magnets 102 and 103 the pole excited by the winding a 11 and the rotor magnets 101 and 102 the pole excited by the winding a 14 and the rotor magnets 104 and 105 and the pole excited by the winding a 15 and the rotor magnets 105 and 106 so that the rotor magnets 101 to 106 are all driven rightwardly the other set of a phase windings a 21 to a 25 which are displaced 180 u00b0 from the aforementioned a phase windings a 11 to a 15 as shown in fig1 are energized in a manner such that a phase winding a 21 provides s pole a phase winding a 22 provides n pole and so forth because the polarity of the rotor magnets opposing the a phase windings a 21 to a 25 is just the reverse see fig1 of those opposing the a phase windings a 11 to a 15 as described above similar attracting forces.