High voltage driving device for X-ray tube

摘要

The present invention relate to an X-ray photographing apparatus, and more particularly, to a high voltage driving circuit for X-ray tube, in which a first voltage multiplying rectifier unit and a second voltage multiplying rectifier unit are in series connected to each other based on a high voltage generation unit to stably convert a high voltage power generated from the high voltage generation unit into a drive power for an X-ray tube with high energy efficiency, and in which a plurality of isolation transformers or high voltage transformers is in series connected to each other in the high voltage generation unit to divide a voltage of the second voltage multiplying rectifier unit into a withstanding voltage of the isolation transformers or the high voltage transformers, thereby ensuring excellent insulation properties.

主权项

1. A high voltage driving device for X-ray tube, the device comprising:
an inverter unit configured to
receive a supply of an AC power, andconvert the received AC power into a high-frequency AC power; a high voltage generation unit configured to
receive a supply of the high-frequency AC power from the inverter unit, andgenerate a high-voltage power; and a voltage multiplying rectifier unit comprising:
a first voltage multiplying rectifier unit configured to
receive a supply of the high-voltage power from the high voltage generation unit, andgenerate a first rectified high-voltage power with a level that is a multiple of the received high-voltage power; anda second voltage multiplying rectifier unit configured to
receive a supply of the high-voltage power from the high voltage generation unit, andgenerate a second rectified high-voltage power with the same level as that of the first rectified high-voltage power of the first voltage multiplying rectifier unit,wherein the second voltage multiplying rectifier unit is in series connected to the first voltage multiplying rectifier unit,wherein an output terminal of the first voltage multiplying rectifier unit is connected to a cathode terminal, and an output terminal of the second voltage multiplying rectifier unit is grounded,wherein the high voltage generation unit comprises:at least one isolation transformer configured to generate an isolated high frequency power; andat least one high voltage transformer configured to
receive a supply of the high-frequency power from the isolation transformer unit, andgenerate the high-voltage power,wherein the at least one isolation transformer and the at least one high voltage transformer are in series connected to each other, andwherein the voltage of the second voltage multiplying rectifier unit is divided into a withstanding voltage of the isolation transformer unit and the high-voltage transformer unit.