求戴维宁等效电路的另一分析方法

摘要

In circuit analysis, finding equivalent circuit of Thevenin, two steps are needed, first step seeking the open circuit voltage Uoc, the second step seeking input resistance Req. The method of this paper only needs the U,I expression, through which we can directly get the open circuit voltage and input resistance. It is simple and convenient when solving the circuit.%在电路分析中,求戴维宁等效电路,需分二步求等效电路,第一步求开路电压Uoc,第二步求输入电阻Req.本方法仅需求出U,I的表达式,直接由表达式得到开路电压和输入电阻,在解电路题时方便简捷.