框图法分析反馈放大器的放大倍数

Analysis of the Amplification Times of Feedback Amplifier with the Block Diagram Method

在反馈放大器的较详细的框图结构基础上，通过框图的等效变换从两方面分析负反馈的放大倍数问题。一方面揭示了解析法、框图法及实验测量法得到的反馈放大器放大倍数的一一对应关系；

On the basis of the detailed block diagram of feedback amplifier, the problem of the negative feedback amplification times is analysed with the equivalent transformation of the block diagram from two respects. Also this paper exposes the correlation of feedback amplifier amplification times obtained with the analytics, block diagram method and experimental measuring, and clarifies the fuzzy concept of mechanically applying the common expression of feedback amplifier amplification times in calculating close cycle amplification times.