A power generator includes a magnetic pole rotor in which a plurality of N magnetic pole cores and S magnetic pole cores are arranged alternately at regular intervals and that is rotatably supported, stator coils that oppose the magnetic pole rotor and are wound round pole portions of poles of stator poles so as to generate AC power, full-wave rectifying circuits 18 for respective stator coils, and smoothing circuits that are connected to the output sides of the respective full-wave rectifying circuits. The power generator is so structured as to convert multiphase AC generated electric power into DC electric power. Further, line ends of positive (+) poles at the output side of the smoothing circuits are connected to the input side of rectifiers that make only current in the forward direction pass through, and the output side (+) line ends of the rectifiers are connected to a (+) combination line.