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一、几种分析负反馈电路方法的比较在电子线路、电子技术基础等课程的教学中,负反馈电路是个难点。负反馈放大电器的分析有多种方法,且各有优缺点。等效电路法、信号流图法、矩阵分析等方法,都是很好的方法,因为他们的分析方法有固定的程序,计算结果也较准确。但是,他们的缺点是不能得到负反馈放大器的特性与反馈量之间的明显关系式,因此不便于理解、记意和电路调整,特别是对初学者来讲。感到困难。而方框图的分析方法正与此相反。从初学者易于接受以及电子线路的计算本身带有近似性的特点来看,方框图的分析方法较为适合教学,所以目前国内外的有关教材中也均以这种分析方法为主。
First, the analysis of several methods of negative feedback circuit comparison In the teaching of electronic circuits, electronic technology and other courses, the negative feedback circuit is a difficult task. Negative feedback amplifier analysis of a variety of ways, and each have their own advantages and disadvantages. Equivalent circuit method, signal flow diagram method, matrix analysis and other methods are good methods, because their analysis methods have a fixed procedure, the calculation results are more accurate. However, their disadvantage is that the obvious relationship between the characteristics of the negative feedback amplifier and the amount of feedback can not be obtained, so it is inconvenient to understand, to remember and to adjust the circuit, especially for beginners. Feel difficult The block diagram analysis is the opposite. From beginners easy to accept and calculate the electronic circuit itself has the similar characteristics of view, the block diagram analysis method is more suitable for teaching, so the relevant textbooks at home and abroad are also based on this analysis.