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。
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.
适配电路中的多级并联放大电路、带通滤波器对试车过程中的随机干扰信号，尤其是振动引起的噪声具有很强的抑制作用。
The multi-parallel- magnification circuits and the band-pass filter can well restrain random interfering noise, especially generated by test run vibration.
采用机辅扰动法(CAP法)进行微波多级放大器电路的优化设计。
In this paper, the method, which is called Computer Aided Perturbation (CAP), is used for the optimization design of the multi-stage microwave amplifier circuits.
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