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在参考资料[1]中提出的对立信号源分析法,用以分析(刀贝)反馈放大器,克服了经典法难于区分 K、β网络,更难于进行准确开环测试的局限性。本文可作为参考文献[1]的续篇:第一节用对立源法分析了各典型多级(刀贝)反馈放大器,给出了相应的精确计算式;第二节讨论用对立源法作信号流图,这是此方法的又一个用途;第三节讨论(刀贝)反馈放大器开环特性的测试,用该法(?)于测得全部开环参量的准确值。
Opposite signal source analysis proposed by reference [1] is used to analyze the feedback amplifier, which overcomes the limitation of classic method that it is difficult to distinguish between K and β networks and it is more difficult to conduct accurate open-loop test. This paper can be used as the sequel to reference [1]: The first section analyzes the typical multistage (scalpel) feedback amplifier by using the opposite source method, and gives the corresponding accurate calculation formula. The second section discusses the signal Flow chart, which is another use of this method; Section III discusses the (open-loop) feedback amplifier open-loop characteristics of the test, using this method (?) Measured in all open-loop parameters of the exact value.