运放音调控制电路虚拟测试研究  

Research on Virtual Test of Tone Control Circuit of Operational Amplifier

作　　者：李翔[1] 唐妍梅[2] LI Xiang;TANG Yanmei(School of Electronic Engineering and Automation,Guilin University of Electronic Technology;College of Physics and Technology,Guangxi Normal University,Guilin,Guangxi Zhuang Autonomous Region,541004 China)

机构地区：[1]桂林电子科技大学电子工程与自动化学院 [2]广西师范大学物理科学与技术学院,广西桂林541004

出　　处：《科技资讯》2021年第4期35-39,共5页Science & Technology Information

摘　　要：采用基于运放的音调控制电路作为案例,讲解有源滤波电路的工作原理和分析方法。对音调控制电路的高低音转折频率和最大提升/衰减量等主要指标与元器件参数间的关系进行了理论分析,并利用Multisim软件对音调控制电路的频率特性进行验证。仿真结果与理论推导相吻合,可使学生更深刻地理解由运放构成的有源滤波电路,并掌握利用Multisim软件进行频域仿真的方法。Op-amp-based tone control circuits are used for case teaching of active filter circuits.The main indicators including bass/treble corner frequency and maximum elevation/attenuation are theoretically derived according to component parameters,and then the frequency response of tone control circuits are evaluated using Multisim software.The simulation results coincide with theoretical calculations,and it can enhance the students’comprehension of op-amp-based active filter circuits,and help them learn the usage of Multisim software for simulation in frequency domain.

关 键 词：有源滤波 音调控制 集成运放 频率特性 虚拟测试 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]