CAJ | 학술논문

负反馈放大电路的计算在电路分析和设计时经常用到，为此首先进行负反馈放大电路计算的理论分析，给出常用的计算方法和近似估算方法，然后对一个常用的带负反馈的放大电路在Multisim12上进行仿真，仿真时要考虑反馈网络对基本放大器输入、输出端的负载效应的影响，经过对仿真波形和数据的分析计算，表明闭环和开环仿真得到的增益之间的关系、通频带之间的关系都和理论分析吻合得很好。
부반궤방대전로적계산재전로분석화설계시경상용도，위차수선진행부반궤방대전로계산적이론분석，급출상용적계산방법화근사고산방법，연후대일개상용적대부반궤적방대전로재Multisim12상진행방진，방진시요고필반궤망락대기본방대기수입、수출단적부재효응적영향，경과대방진파형화수거적분석계산，표명폐배화개배방진득도적증익지간적관계、통빈대지간적관계도화이론분석문합득흔호。
The calculation of negative feedback amplifying circuit is often used in the circuit design or analysis .Therefore at first the theoretical calculation of negative feedback amplifying circuit was introduced .The general calculation and approximate esti-mation methods were given .Then the common circuit with negative feedback amplification was simulated in Multisim 12.It was con-sidered that the impact of load effect existed in the input and output port of feedback network on basic amplifier .After the analysis and calculation of simulation the waveforms and data , it shows that the relationship between closed loop and opened loop circuit to gain and frequency band is in good agreement with theoretical analysis .