摘要
根据X射线管的结构和工作原理,提出高压供电采用正负电源供电的X射线管的灯丝电源主电路宜采用谐振形式。分析推挽谐振式电路的工作原理与控制方式,采用脉宽调制集成电路SG3526的频率调制方式实现对灯丝电流的控制,并给出控制电路原理图。实验波形验证了原理的正确性和方案的可行性。
According to the structure and working principle of the X-ray tube,in the case of high-voltage power supply,this paper proposes that the resonant form is suitable for filament power supply main circuit of the X-ray tube.It analyzes the working and controlling method of the push-pull resonant circuit.It realizes filament current control using pulse width modulation with integrated chip SG3526 in frequency modulation method.Then it gives a schematic diagram of the control circuit.The experimental results verify the correctness and feasibility of the design.
出处
《重庆科技学院学报（自然科学版）》
CAS
2013年第3期169-173,共5页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
安徽省高校省级自然科学研究自筹项目(KJ2011Z047)
关键词
灯丝电源
推挽电路
谐振
脉冲频率调制
filament power supply
push-pull circuit
resonance
pulse frequency modulation
