Abstract：Safe and stable switching power supply is the prerequisite to ensure the normal operation of the equipment. Three typical
equipment power failure examples of HVS-2 oral negative pressure machine, carbon dioxide incubator Thermo8000DH and Mindray
T5 monitor were summarized in this article, the composition and working principle of the power switch was thoroughly analyzed,
and the corresponding solution was formulated based on the analysis results. We analyzed and repaired the fault of switching power
supply, so that the fault could be handled, which provided a reference for the maintenance of switching power supply of medical
equipment. At the same time, only when the maintenance personnel have fully mastered the principle and maintenance methods of
the switching power supply of medical equipment, can they provide guarantee for the safe and stable operation of medical equipment.
夏信堂，刘勇，李奥林，单长征，卞兆峰，李云雷，田野，蔡杨. 医疗设备开关电源典型故障分析与维修[J]. 中国医疗设备, 2020, 35(3): 167-170.
XIA Xintang, LIU Yong, LI Aolin, SHAN Changzheng, BIAN Zhaofeng, LI Yunlei, TIAN Ye, CAI Yang. Analysis and Maintenance of Typical Faults of Switching Power Supply
for Medical Equipment. China Medical Devices, 2020, 35(3): 167-170.
