High-voltage power supply special for X-ray tube

Abstract

The invention relates to a high-voltage power supply special for an X-ray tube, which is widely applied to various types of X-ray apparatuses in the aspects of medical diagnosis, nondestructive examination, public traffics, safety inspection, and the like in the fields of medical treatment, science education, industry, and the like. The high-voltage power supply comprises a power supply circuit sealed in a shell, wherein three connectors are welded on the power supply circuit, and the power supply circuit comprises a filament power supply circuit, a high-voltage control circuit and a high-voltage drive and output circuit; and the high-voltage control circuit is respectively connected with the filament power supply circuit and the high-voltage drive and output circuit. The high-voltage power supply has the advantages of low electromagnetic radiation, strong capacity of resisting disturbance, high-precision tube flow control, functions of power-on time delay and soft start, small temperature drift, good long-term stability, high reliability, compact structure, small outline size compared with contrasts, lighter weight and easy mounting.

Description

Technical field [0001] The present invention relates to a kind that is widely used in the fields of medicine, science and education, industry and the like. Such as medical diagnosis, non-destructive testing, public transportation, safety inspection and other aspects of various types of X-ray machine equipment in the X-ray tube dedicated high-voltage power supply. Background technique [0002] Most of the filament part of the X-ray tube special power supply uses DC output, long-term operation will reduce the life of the X-ray tube filament; the high-voltage control part is mostly used by controlling the amplitude, pulse width (duty cycle) or Pulse frequency, and then control the power switch tube to achieve the purpose of stabilizing or regulating the output voltage. Since the control signal of the switch tube is a square wave, its fast turn-on and turn-off will bring higher dv / dt and di / dt. On the one hand, it will generate more electromagnetic interference (EMI) and cause damag...

AI Technical Summary

Problems solved by technology

Since the control signal of the switch tube is a square wave, its fast turn-on and turn-off will bring higher dv/dt and di/dt, on the one hand, it will generate more electromagnetic interference (EMI), which will cause damage to the power supply Pollution, on the other hand, also increases the ripple of the output voltage and is difficult to filter out, w

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