In this paper, the electric circuit of linear negative resistance was designed with operational amplifier, and its characters. Special stability condition, were analysed.
本文给出用运算放大器实现负电阻的实验电路及其分析，主要讨论电路的稳定条件。
This article analyses influence on inside resistance in the signal source on circuit in 3 ways: monopole amplifying circuit, multilevel amplifier circuit, and negative feedback amplifier.
本文从单级放大电路、多级放大电路、负反馈放大电路三个方面，分析了信号源内阻对电路的影响。
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