High-frequency resonant high voltage generator for X-ray composed of step-down chopper and inverter using semiconductor device (IGBT)

摘要

The present invention adjusts the DC output voltage by driving a semiconductor device (IGBT), which is used as a step-down switch for direct current reduction at a switching frequency of 20 (kHz), and drives the semiconductor device in a high frequency inverter unit receiving a regulated DC output voltage. By generating voltage, it is easy to apply various high frequency high voltage generators, and it is easy to start and stop by switching element, so it is easy to save energy of the device and by introducing high frequency resonance method into circuit, it can limit excessive voltage and current stress of switching element. It can increase the efficiency of the device, reduce the price, achieve the small size and light weight, and improve the efficiency as well. By providing the digital control function to the high voltage converter, the accuracy of the output voltage is good and the response and control characteristics are good. Stabilization can be achieved.