摘要
本文从分流、分压的角度讨论电路等效的条件，在此基础上用短接、断开等方法用简单电路的万法给出了阻抗Ｙ形联接与△形联接等效变换的简单推导。
This paper, from the view of distribution and fraction, discussed the conditions of circuit equivalent, on the basis of it, using short connection, breaking off the simple circuit, giving out the simple deduction of the resistance Y connection and A connection equivalent exchange.
