摘要
单管放大电路的分析是低频电子线路课程的重要部分,在对应的验证实验中关于信号失真的分析主要采用示波器观测和电位器及信号源调整的方法。这种方法对失真现象的分析和解释不够细致和全面,导致最大不失真输出的测量误差较大。通过Multisim软件的深度开发,结合具体电路案例的仿真结果,对信号失真进行量化描述,对实验结果进行全面验证和延展说明;同时结合Multisim的综合仿真功能,提出仿真软件的辅助设计方法测量最大不失真输出,以达到降低测量误差的效果。结果表明,仿真设计思路和结果对实验方法的优化具有一定的指导作用。
The analysis of single transistor amplifier circuit is an important part of low-frequency electronic circuit course.In the corresponding verification experiment,the analysis of signal distortion mainly adopts the method of oscilloscope observation and adjustment of potentiometer and signal source.The analysis and explanation of distortion phenomenon is not carried out in a detailed and comprehensive manner,therefore the measurement error of maximum undistorted output is large.Through the deep exploitation of Multisim software,combined with the simulation results of specific circuit cases,the signal distortions are described quantitatively and the experimental results are fully verified and extended.At the same time,combined with the comprehensive simulation function of Multisim,the auxiliary design method of the software is proposed for the measurement of the maximum undistorted output,so as to reduce the measurement error.The results show that simulation design ideas and results are instructive to the optimization of the experimental method.
作者
冷文
刘高华
LENG Wen;LIU Gaohua(School of Electrical and Information Engineering,Tianjin University,Tianjin 300072,China)
出处
《实验科学与技术》
2021年第3期106-111,共6页
Experiment Science and Technology
基金
天津市自然科学基金项目(17JCYBJC18600)
教育部第二批新工科研究与实践项目(E-ZDH20201603)
教育部产学合作协同育人项目(教学内容和课程体系改革)(201901066021)。
