医用X光机高压电源的设计与研究

Design and Research on High Voltage Power Supply of Medical X-Ray Machine

中文关键词:  医用X光机  UC3525A  闭环控制  反馈电路

英文关键词:medical X-ray machine  UC3525A  closed loop control  feedback circuit

中文摘要:

      设计了一种新型的医用X光机高压电源电路，该电源采用了集成控制芯片UC3525A，提高了电路的抗干扰能力和稳定性。电源输出的电压经过电阻的分压直接采样后通过反馈回路给控制电路，从而形成闭环控制，可以精确控制输出的电压值。该电路主要包括控制电路、变换电路、倍压电路以及反馈电路几个部分。

英文摘要:

      A new type of high power supply circuit applied in medical X-ray machines is designed.An integrated control chip UC3525A is employed,therefore the capacities of resisting disturbance and stability are greatly improved.A closed loop control structure is formed according to the partial pressuring and sampling of divider resistance of the output voltage to the control circuit,thus the output voltage can be controlled precisely.This circuit main includes the following functions,control circuit,inverter circuit,voltage-multiplying circuit and feedback circuit.