X-ray machine high voltage generator control circuit and X-ray machine

Abstract

The invention discloses an X-ray machine high-voltage generator control circuit and an X-ray machine. The control circuit comprises a booster circuit module, a KV voltage sampling circuit module, an MA current sampling circuit module, a main control circuit module, a filament control drive circuit module and a KV feedback circuit module. The input end of the booster circuit module is connected with the output end of the power supply main loop, and the control end of the power supply main loop is connected with the output end of the KV feedback circuit module; the output end of the booster circuit module is connected with the power supply end of an X-ray machine emission bulb tube, and the main control circuit module is connected with the output end of the MA current sampling circuit module. The X-ray machine comprises the control circuit. According to the control circuit and the X-ray machine comprising the control circuit, stable and efficient 60KV voltage can be provided for an emission bulb tube of a high-voltage generator of the X-ray machine, stable 2mA excitation current can be provided for a filament, the utilization rate of a power supply is improved, energy is saved, and in addition, due to the fact that the circuit is simple in structure, cost is low.

Description

technical field [0001] The invention relates to the technical field of X-ray machines, in particular to an X-ray machine high-voltage generator control circuit and an X-ray machine for dental inspection. Background technique [0002] The X-ray generator is a device that provides power to the X-ray tube. The X-ray high-voltage generator mainly has two important interconnected circuits: 1) Filament power circuit, which provides the power required for heating the cathode filament. 2) A high-voltage generating circuit, which is used to provide a high-voltage generating circuit for the X-ray emitting tube. At present, the voltage that the high-voltage generating circuit of the dental X-ray generator can provide is generally around 5KV. On the other hand, the current of the filament generating cathode electrons with triggering or stretching effect should also be kept at 2mA. However, the current provided by the current filament power supply circuit for the filament cannot meet th...

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Problems solved by technology

At present, the high-voltage generating circuit of the dental X-ray generator can provide a voltage of about 5KV. On the one hand, it cannot meet the high-voltage demand of 60KV for the tube emission of the dental X-ray machine, and the voltage will fluctuate. On the one hand, the current of the filament that produces cathode electrons with triggering or stretching effects should also be kept at 2mA. However, the current provided by the current filament power supply circuit for the filament cannot meet the requirements, and there are also fluctuations in the current, which leads to the bulb. The tube current fluctuates. Based on the above reasons, there is no circuit that can provide low-cost and stable high voltage and tube current for the tube.

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