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计算负反馈放大器的电压放大倍数需要按照反馈类型分解为基本放大电路和反馈网络,确定应采用的广义放大信数A和反馈系数F的公式,利用反馈深度求得A_f,再经换算才能解出电压放大倍数。有时放大器包含几种类型的反馈,反馈深度也不是很大于1,都更增加了求解的困难。对于线性系统,信号流图分析的应用极为广泛。应用网络信号流图将来知变量与有向图的节点相对应,变量的因果关系通过流图直接显示出来。同时,由图的结构可以直接对系统求
The voltage amplification factor of the negative feedback amplifier needs to be decomposed into the basic amplifying circuit and the feedback network according to the feedback type to determine the generalized amplification factor A and the feedback coefficient F which should be used, and the feedback depth can be used to obtain A_f and then converted Voltage magnification. Sometimes the amplifier contains several types of feedback, and the feedback depth is not much greater than 1, all adding to the difficulty of solving it. For linear systems, signal flow graph analysis is extremely versatile. Applying Network Signal Flow Graph In the future, the known variables correspond to the nodes of the directed graph, and the causality of the variables is directly displayed by the flow graph. At the same time, the structure of the graph can be directly on the system