【摘要】 提出网络电路等效变换的条件，结合三端网络电容器电路，利用网络的开路、短路、最小能量原理等方法完成Ｙ形联接与△形联接的等效变换更多还原

【Abstract】 This paper points out the conditions of equivalent alteration in network circuit and gives some demonstrations of equivalent between Y-connection and △-connection by using the methods of open and short circuit minimum the consumption of energy in an network capacitor circuit.更多还原