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== Alternator and Magneto ==Alternators are rotating electrical machines used for generating electric power to charge the battery when the rotator of the alternator is turning at a sufficient speed. The basic function of an alternator is to generate the AC current. The stator generates a magnetic field, which interacts with windings on the poles of the other structure. As the magnetic field intercepts the windings, an electrical current is generated, which is provided to a suitable load. Permanent magnet alternators, which include magneto alternators, have permanent magnets assembled on the inner walls of a rotor, for example, formed as a flywheel. Permanent magnet alternator systems are used on motorcycles. The voltage regulators used with such systems typically use open loop control instead of the more common closed loop control systems used on automobile systems.