替代定理的几点应用探讨

Some Discussions on Application of Substitution Theorem

替代定理是几个重要的电路定理之一。关于替代定理应用中的问题,以及是否应该加补充条件的讨论一直存在。考虑到定理是用来思考判断和推理的,从完整性和严谨性角度,作者经研究及实际教学经验,从三个方面提出替代定理应用的思路和见解:一是含控制量的二端网络的替代;二是用一个适当的电阻替代;三是灵活选择替换形式,避免改变原电路的解。

The substitution theorem is one of the important circuit theorems. There have always been relative discussions, whose focus is on the application and on whether the supplementary conditions should be added. Considering that the theorem is used for judgment and reasoning, from the perspectives of integrity and scientific rigor, and based on the actual teaching and research experience, the paper puts forward the i- deas and opinions of the substitution theorem from three aspects ： the first is the substitution of two terminal network containing controlled amounts; the second is the replacement with an appropriate resistor; the third is a flexible choice of substitution forms so as to avoid changing the original circuit.