Patent ID: 7400708

Claim:
An X-ray generating device comprising: a high voltage transformer for boosting an AC power voltage including a plurality of primary windings connected in parallel to an AC power supply, at least one iron core, and a plurality of secondary windings; a plurality of high voltage rectifier circuits which are connected to outputs of the plurality of secondary windings of the high voltage transformer and converts the outputs into DC outputs, connects the DC in series, and grounds the midpoints of the series connection at a neutral point; and an X-ray tube receiving a predetermined tube voltage through a cathode and an anode thereof, respectively connected to a DC output negative terminal and a DC output positive terminal on both ends of the plurality of high voltage rectifier circuits, in which a waveform phase difference removing means is provided to remove a difference in waveform and phase occurring between plural currents respectively flowing through plural windings and to remove an unbalanced voltage, wherein the waveform phase difference removing means has a hollowed core made of a ferromagnetic material of large permeability, and wherein a part of plural conductors connecting the primary windings and the AC power supply passes through or turns around the hollow, and differences in waveforms and phases are removed by mutually canceling magnetic fields generated due to the primary winding currents.