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来自维基百科，自由的百科全书
单端初级电感转换器( Single-ended primary-inductor converter，简称SEPIC ) 是一种直流-直流转换器，单端初级电感转换器输出端的电势（电压）可以大于、小于或等于其输入端的电势。单端初级电感转换器的输出由控制开关 (S1) 的占空比控制。[1]
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