An integrated small negative output x-ray tube high voltage power supply

Abstract

The invention relates to an integrated small-sized negative output X-ray tube high-voltage power source. An auxiliary power supply and reference circuit is connected with a filament control and output circuit, a tube current feedback and display circuit, a high-voltage control and driving circuit, a high-voltage feedback and tube voltage display circuit; a voltage-multiplying, rectifying and filtering circuit is connected with the filament control and output circuit, the tube current feedback and display circuit, the high-voltage control and driving circuit and the high-voltage feedback and tube voltage display circuit; the tube current feedback and display circuit is connected with the filament control and output circuit; and the high-voltage feedback and tube voltage display circuit is connected with the high-voltage control and driving circuit. A self-oscillation type half-bridge driver is adopted for filament power supply; alternating current open-circuited output is realized; and the output of the filament power supply can be controlled through controlling the value of output tube current, and the service life of an X-ray tube can be prolonged. The integrated small-sized negative output X-ray tube high-voltage power source has a tube current setting function and a tube current and tube voltage output real-time monitoring function. Compared with the prior art, the integrated small-sized negative output X-ray tube high-voltage power source has the advantages of small size, high stability in long-term operation and high reliability, and is convenient for users to use and install.

Description

technical field [0001] The invention relates to an integrated small-scale negative output X-ray tube high-voltage power supply widely used in the fields of medical treatment, industry, non-destructive detection and the like. Background technique [0002] At present, the anode high voltage of X-ray tube power supply in the market is mostly powered by positive high-voltage power supply. In this case, the filament power supply is on the low-voltage side without suspension, and the control is easy. Its production is relatively simple and easy to miniaturize, but from the structure of X-ray tube Look, this requires the anode part of the X-ray tube to withstand a withstand voltage of tens of thousands of volts, so that no matter from the structural installation of the X-ray tube in the user system, or the heat dissipation treatment that must be considered for long-term work, there will be a large influences. However, the size of the negative high-voltage power supply under the sa...

AI Technical Summary

Problems solved by technology

[0002] At present, the anode high voltage of X-ray tube power supply in the market is mostly powered by positive high-voltage power supply. In this case, the filament power supply is on the low-voltage side without suspension, and the control is easy. Its production is relatively simple and easy to miniaturize, but from the structure of X-ray tube Look, this requires the anode part of the X-ray tube to withstand a withstand voltage of tens of thousands of volts, so that no matter from the structural installation of the X-ray tube in the user system, or the heat dissipation treatment that must be considered for long-term work, there will be a large influences

However, the size of the negative high-voltage power supply under the same power is relatively large, which is also contrary to the development trend of its miniaturization.

In addition, the filament power supply mostly uses DC output, long-term work will reduce the life of the X-ray tube filament, and have a certain impact on the radiation intensity of the X-ray tube.

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