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交换式开关电源供应器在输入电源送电的瞬间会出现一短暂(1/2~1电源周期，ex:60hz电源1/120~1/60秒)的大电流(依产品设计约为20~60a，请参考产品规格书)，产
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凡是做过开发工作的人员都有这样的经历，测试开关电源或在实验中有听到类似产品打高压不良的漏电声响或高压拉弧的声音不请自来：其声响或大或小，或时有时无;其韵律或深沉或刺耳，或变化无常
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