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本文根据迭加原理,与反馈特点相结合,提出了对立信号源分析法,以解决在常用的经典方法分析反馈放大器中,往往由于假设条件不能满足而出现的不(?)区分开 K、β电路的困难。此法的特点是在不断开反馈回路(闭环)的情况下给出开环的 K、β等参量,对立源是使反馈网络失去反馈作用的信号源,因此其实质是起去耦作用。文中对各种典型的单环和复合环反馈放大器举出实例加以了分析、说明。
Based on the principle of superposition and the feedback characteristic, this paper proposes a method of analyzing the signal source of the opposite, in order to solve the problem that in the commonly used classical method to analyze the feedback amplifier, it is often not possible to distinguish K Circuits difficult. The characteristic of this method is to give open-loop K, β and other parameters without breaking the feedback loop (closed loop). The opposition source is the signal source that causes the feedback network to lose its feedback. Therefore, it essentially acts as a decoupling effect. In this paper, a variety of typical single-loop and composite loop feedback amplifier are given examples to be analyzed.