Patent ID: 8089792

Claim:
A cycloconverter generator equipped with a magneto having three-phase output windings, single-phase output windings facing the permanent magnets to produce phase signals each indicative of a phase of the output of the magneto, a bridge circuit comprising p number of thyristors bridge-connected in antiparallel connection to the three-phase output windings to constitute a cycloconverter, and a bridge drive circuit that generates single-phase AC power to be supplied to a load by turning on the p number of the thyristors of the bridge circuit at variable timing every half-period of a desired AC power frequency based on the phase signal, comprising: a single DC power supply unit that is connected to the single-phase output winding and rectifies AC power outputted by the single-phase output winding to DC power; q number of power circuits that are connected to the DC power supply unit and supply the rectified DC power as operating power to the p(p>q) number of the thyristors; and r(p>r) number of thyristor drive circuits that are connected to the q number of the power circuits and drive the p number of the thyristors, wherein the r number of the thyristor drive circuits are individually used to drive in common ones among the p number of the thyristors whose operation is unaffected even if driven at the same timing such that the number r of the drive circuits is made smaller than the number p of the thyristors.