PURPOSE: To obtain an economical magnetism-controlling induction generator excellent in miniaturization with a high electromotive force, and durability and oscillation-proof property, having the handy mechanism of a stator and a rotor.

CONSTITUTION: A stator consisting of four magnetic bodies 1-4 arranged to be continuously jointed to each other at equal angles and at equal intervals on a circumference, and first poles 20, 20a, 20b for a magnet set to be separated from the magnetic bodies on the circumference, positioned in the directions of polarities different from each other, are arranged. Besides, a device is formed to be provided with a rotor having second poles 21, 21a, 21b for the magnet positioned at polarities opposite to the first poles, positioned at the same angle as the angles of the first poles and separated at a specified interval in the axial direction, the sections of the magnetic bodies for regulating magnetic flux density with the rotation of the rotor, namely, windings 11-14 wound up to cross magnetic flux at a position between the first and second poles, and a rotary shaft 22 formed with a non-magnetic body for supporting the rotor to be rotated.