串联谐振电路综合提高实验(之三)——电路参数对串联谐振特性的影响

A Comprehensive Experiment on Series Resonant Circuits( Part Ⅲ)——Influence of Circuit Parameters on Series Resonant Characteristics

为使学生更全面理解串联谐振电路的基本原理,在开发出串联谐振电路综合提高实验之一、之二基础上,又设计并构建了串联谐振电路综合提高实验之三,即"电路参数对串联谐振特性的影响"。该实验从简单RLC串联谐振原理电路的具体实现入手,让学生通过测量去发现并关注,在实际操作上,保持正弦信号发生器输出电压、电阻器电阻及空心电感线圈电感等量值不变,仅改变电容器电容和正弦信号发生器输出电压的频率量值,致使该电路的谐振频率发生改变的同时,其整体的等效电阻即空心电感线圈的电阻发生了改变,从而引导学生深入探究、正确认识原理电路与实际电路的差异,从而激发他们的学习兴趣,并更深刻地意识到在探究电工电气新知识过程中开展电工实验的必要性和重要性。

In order to make the students more comprehensively understand the basic principle of the series resonant circuit,on the basis of developing of the comprehensive experiments(PartⅠ,PartⅡ)of the series resonant circuit,a new comprehensive experiment of“the influence of circuit parameters on series resonant characteristics”is designed.This experiment starts from the concrete realization of the simple RLC series resonant principle circuit,let students discover and follow the measurement.In actual operation,the sinusoidal signal generator output voltage,the resistance of the resistor and the inductance of the hollow inductance coil constant are kept,only the capacitor and the sinusoidal signal generator output voltage frequency are changed.These result in the resonant frequency of the circuit changes simultaneously,the overall equivalent resistance that the resistance of the hollow inductance coil has changed.The experiment guides students to in-depth study,correct understand the difference between the principle circuit and the actual circuit,so as to stimulate their interest in learning,and more deeply aware of the electrical and electrical knowledge in the process of exploring the necessity and importance of electrical experiments.