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在常用网络定理中,等效电源定理是一个非常有用而重要的定理。任一线性有源一端口网络都可用一个等效电源电路来代替。必须强调的是,这一等效电路仅是根据其外接端口的伏安特性而作出的模型电路。用它置换原来的一端口网络,只保证外电路工作不变,也就是说,它只对外等效。对于等效电源定理的证明一般都采用置换定理和迭加定理。我在课堂教学中,讲授这一定理是采用下面将要介绍的一种讲法,其效果也不错。
In the common network theorem, the equivalent power theorem is a very useful and important theorem. Any linear active-one-port network can be replaced by an equivalent power circuit. It must be emphasized that this equivalent circuit is only a model circuit based on the volt-ampere characteristics of its external port. Use it to replace the original one-port network, only to ensure that the work of the external circuit unchanged, that is, it is only external equivalent. Proof of the equivalent power theorem generally use the replacement theorem and superposition theorem. I teach in the classroom, teaching this theorem is used below to introduce a kind of talk, the effect is not bad.