线性含源二端网络的Therenin等效电路的一种求法

A Method of Calculating Thevenin Eguivalent Circuit of Linear Active Twoterminal Network

本文从线性含源二端网络在接有有源负载情况下的输出电压(电流)特性方程出发,利用迭加原理,提出了此类二端网络戴维南(诺顿)等效电路的一种新求法—虚电源法。本文指出:若在端口施以虚拟的电流源Ix,则端口电压Ux=K.Ix+b.那么此二端网络的开路电压U_o=b;入端电阻R_o=K,此法的特点是:U_o和R_o同时得到,不需要单独求,对于分析含受控源的电路,颇为有效。若在端口施一虚拟的电压源,求端口电流的表达式,可得到诺顿等效电路的参数。

This paper introduces a useful method of calculating Thevenin Equivalent cir- cuit of linear active twoterminal network. If an imaginary currunt source I_x is applied to a lin- ear active twoterminal network, the port output roltage V_x will be K·I_x+b. Then the open --circuit--voltage Vo is equal to b, the equivalent resistance Ro is equal to K. The distinct advantage of the method is that the open--circrit--voltage and the equivalent resistance of the active twoterminal nwtwork are obtained simultaneously.