Also, having made use of reverse transmission to describe an operational amplifier, a unified rule of the constraint admittance matrix of networks containing operational amplifiers is obtained.

• 本文用节点法分析了含理想电压源的网络,从网络的不含源导纳矩阵获得了含源网络的约束导纳矩阵以及节点短路电流源向量的公式。