In this paper, A new method of system main loop analysis is quoted to analyse the behaviour characteristic of feedback amplifier with large signal, A ordinary analysis method and steps are given.

本文引用系统主回路分析的新方法—回路增益弹性法对大信号下反馈放大电路的行为特性进行讨论，并通过分析一个二阶反馈放大电路给出一般分析方法和步骤。

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In this paper, authors deduce a analysis scheme explaining feedback characteristic of a operation amplifier using the theory and method of signal composing and decomposing.

本文用信号分解和叠加的理论及方法，推导出一种适用于分析运算放大电路反馈特性的“分解方框图”，并通过实例介绍了相量图分析法。

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