摘要
为了研究负反馈对放大电路性能的影响,在对负反馈放大电路理论研究的基础上,采用Multism作为开发平台,设计了电压串联负反馈放大电路的仿真系统。学生只需要修改一些参数或者改变下各个开关的状态,即可观察到负反馈对放大电路性能的影响效果。在改变参数的过程中,能够直观地观察到开环系统和闭环系统在动态参数以及幅频特性等方面的不同。测试表明,与普通放大电路的开环系统相比,引入了负反馈以后的闭环系统,性能得到了明显改善,结果与理论保持一致。
In order to study the influence of negative feedback on the performance of the amplifier circuit,based on the theoretical research of the negative feedback amplifier circuit,Multism is used as the development platform to design the simulation system of the voltage series negative feedback amplifier circuit.Students only need to modify some parameters or change the state of each switch to observe the effect of negative feedback on the performance of the amplifier circuit.In the process of changing the parameters,the difference between the dynamic parameters and the amplitude-frequency characteristics of the open-loop system and the closed-loop system can be visually observed.The test results show that the performance of the closed-loop system with negative feedback is significantly improved compared with the open-loop system with ordinary amplifiers,and the results are consistent with the theory.
作者
卫亚博
宋璐
冯艳平
Wei Yabo;Song Lu;Feng Yanping(Pingdingshan University,Pingdingshan Henan,467000;Department of medical technology,Shaanxi University of Chinese Medicine,Xianyang Shaanxi,712046;Zhengzhou Technical College,Zhengzhou Henan,450121)
出处
《电子测试》
2020年第23期14-16,共3页
Electronic Test
基金
平顶山学院教改项目“适应应用型工科人才培养的《电路分析》课程教学改革研究(2017-JY27)”
平顶山市社科联项目“地方高校应用型人才培养模式下电路分析实验教学改革探索(20190496)”。
