| 摘要 |
<p>An inverter system X-ray high-voltage apparatus which controls a lamp voltage by the phase shift PWM control of a semiconductor switching device changes the time ratio of the phase shift PWM signal inputted to a driver circuit of the semiconductor switching device to correct this DC component when a DC component detecting circuit with the controlled lamp voltage detects the DC component of an output of an inverter circuit via a current detector provided on the primary side of a high-voltage transformer, corrects an output voltage from the inverter circuit into a positive-negative symmetric waveform to eliminate a bias magnetism in the high-voltage transformer, enables the size of the high-voltage transformer and the omission of a DC/DC converter, and enables the reduction in set-up area, size, and weight, and an X-ray apparatus comprising this apparatus.</p> |
