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Theoretical Calculations and Simulation Analysis in Differential-Operational Amplify Current with Parallel Negative Feedback of Circuit
Author(s): YANG Yi-jun1 CHEN De-bao1 MAO Pei2 1.School of Physics and Electronic Information, HuaiBei Coal Industry Teacher’s College, HuaiBei AnHui, 235000, 2.Information Engineering College in Shanghai Maritime University, Shanghai, 200135
Pages: 83-
86
Year: 2011
Issue:
2
Journal: Beijing Electronics
Keyword: 负反馈; 差分-运放放大电路; EWB;
Abstract: 本文构建了一种直接耦合方式下的差分-运放电流负反馈放大电路,根据多级放大器增益的计算方法,计算了基本放大器的电压增益,进而得到电流增益。另外采用微变等效电路方法,得到了反馈放大器的电流增益,两者满足负反馈放大电路中的基本关系。同时,通过仿真软件EWB验证,基本放大器和反馈放大器的仿真结果与理论计算一致。
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