目前，各医院使用的进口大中型医疗仪器机内电源均采用单独盒式和密封模块式（固定于电路板上），厂家随机说明书多只介绍外接框图，极少提供内部电路图，给元件级维修带来很大难度，电源发生故障后不得不花费高额费用到专业维修站更换电源盒及电路板。本文介绍我院超九电源两 At present, the imported large and medium-sized medical instruments used in various hospitals are powered by separate cassettes and sealed modules (fixed on the circuit board). The manufacturers’ random descriptions only introduce external block diagrams, rarely provide internal circuit diagrams, and provide component-level maintenance. Bring a great deal of difficulty, after the power failure has had to spend a lot of money to the professional repair station to replace the power box and circuit board. This article describes our hospital ultra-nine power supply two