电压并联负反馈放大器的实验研究

On the discussion of the Degenerative

本文依据电子线路理论与误差理论,讨论了电压并联负反馈放大器实验对信号源内阻R_s的选择方案;分析了测量输入、输出电阻使用半电压法的可行性;对测量输出电阻时出现输出电压V_o下降,而输入电压V_i上升这一实验现象作了理论分析与实验论证。

Based on the theories of electronic Circnit and error,the article explores the approaches in the choice of signal Source' s internal nesistance Rs in the degeneratiue cmplifier' s experiment. The possibility of the measunement of input resistance and output nesistance is anlysed by a half valtage way. the case,in which the input loltage will rise and output voltage will drop while the output resistance is measured,is examined by theoretical analyses and also proved by experiments.