双口形式的戴维宁定理在电路分析中的应用

The Application of Two-port Thevenin′s Theorem in Circuit Analysis

本文通过网络撕裂法,将电路网络分解为共地连接的有源双口网络和无源双口网络的组合,构造戴维宁定理双口等效网络,分别求出有源双口网络开路电压和无源双口网络的Z参数,根据戴维宁定理的矩阵形式计算双端口电流。文章分析了戴维宁定理在独立电源与含受控源双口网络中的应用,通过算例说明该方法的正确性与适用性。本文的讨论可供讲授电路理论课程的教师参考。

This paper decomposes the circuit network to a common-ground active two-port network and a passive two-port network by network decomposition to construct two-port Thevenin equivalent network,then calculating the open circuit voltage of active two-port network and the Z-parameter of passive two-port network respectively,and two-port currents can be obtained by the matrix form of Thevenin's theorem.This paper analyzes the application of Thevenin's theorem in two-port network which including independent power supply and controlled source,and the correctness and applicability of this method are proved by examples.This paper can be a reference to teachers of circuit theory.