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zhouwu430
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樓主  發(fā)表于: 2009-04-09 13:35
                 請教各位前輩，接近開(kāi)關(guān)按輸出形式分，可以分為直流二線(xiàn)制，直流三線(xiàn)制，直流四線(xiàn)制，有什么區別，
各優(yōu)缺點(diǎn)是什么？
248226903
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1樓  發(fā)表于: 2009-04-22 20:25
不太清楚，兩線(xiàn)制的是一根是電源輸入另一根是輸出，三線(xiàn)制的事一根接正極，一根式負極，還有就是輸出線(xiàn)，四線(xiàn)制的事電源正負極和輸出輸入線(xiàn)。

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