RLC串联谐振电路实验方法改进探究

Research on Improvement of Experimental Method of RLC Series Resonance Circuit

针对传统实验方法存在操作繁琐、谐振点附近电压变化缓慢等问题,提出了改进实验测量的方法,通过测量电容电感两端合电压与信号源输出电压的比值随频率变化曲线来测定谐振频率。与传统实验方法对比表明,该实验方法不仅能达到与传统实验方法相同的实验结果,而且能改进实验操作,并加深学生从不同角度对电路谐振特性的理解。为RLC串联电路谐振频率的测量提供了新的思路和切实可行的实验方案。

In view of the problems of traditional experiment methods,such as cumbersome operation and slow change of voltage near the resonance point,a method for improving experimental measurement is proposed.The resonant frequency is determined by measuring the ratio,that is the voltage at both ends of the capacitor and inductor divided by the output voltage of the signal source,varying with frequency.Compared with the traditional experimental methods,the experimental method can not only achieve the same experimental results as the traditional experimental methods,but also improve the experimental operation,and deepen the students’understanding of the circuit resonant characteristics from different aspects.It provides a new idea and a practical experimental solution for the measurement of the resonant frequency of the RLC series circuit.