PURPOSE: To increase the output of a generator, by fixing a driving coil to generating coils with a multipolar magnet and two same-formed generating wire elements put together without angle difference in the circumferential direction and connected in series, and by retaining the multipolar magnet rotatably.

CONSTITUTION: Between a rotatably retained multipolar magnet 4 and a fixed driving coil 5, two generating coils 6, 7 are fixed on the coil 5. The generating coils 6, 7 are organized with generating wire elements 6a, 7a and canceling coils 6b, 7b to be connected in series, and the respective wire elements 6a, 7a can be put together without angle difference in the circumferential direction. As a result, double or more output is obtained, and a motor can be miniaturized.