最大功率传递定理的简易分析证明方法

Easier Analysis Method of the Maximum Power Transfer Law

在电工电子技术教材中,分析证明负载最大功率传递定理都是用微分法,该方法需要求解复杂的微分方程,不仅很麻烦,且结果不直观。这里创造性地提出一种利用求解不等式来进行分析证明的方法,该方法不必解复杂的微分方程,不但使分析证明过程大大简化,而且结果更直观明了。用该方法分别对直流电路和交流电路的最大功率传递定理进行了分析。在实际教学中,有效地提高了教学质量。

Differential equation is usually used in analyzing and proving the maximum power transfer law in most electric and electronic textbooks. Complicated differential equation must be used in this way, ,So the way is difficult and the result is not intuitional, This paper puts forward an easier and more intuitional way which is based on calculating inequation and needn＇t solve differential equation. This paper analyzes and proves the maximum power transfer laws of direct circuit and alternate circuit. In the actual teaching,quality of teaching is improved effectively.