High-voltage generator and x-ray imaging device equipped with same

In order to provide a high-voltage generator having a high-voltage transformer reduced in size while maintaining the insulation between a secondary coil an iron core, the present invention is characterized by being provided with: a high-voltage transformer having a primary coil, a secondary coil and an iron core; and a high-voltage rectifier whereby an alternating current voltage exiting from the high-voltage transformer is rectified into a direct current voltage. The secondary coil and the iron core are divided in the direction of a magnetic flux generated by running an alternating current in the primary coil. Each of the divided secondary coils is wound around each of the divided iron cores correspondingly, and a dielectric is disposed between each of the iron cores.