基础实验题B:线性及非线性LC振荡电路

Linear and nonlinear LCoscillator circuits

介绍了第4届全国大学生物理实验竞赛基础性实验试题B的实验内容、参考解答以及竞赛结果的分析.实验包括线性及非线性LC振荡电路的暂态及稳态性质.实验1涉及线性RLC电路,重点考察学生的实验基础知识和能力;实验2在线性LC振荡电路基础上,增加了非线性阻尼器件,要求学生参照线性振荡电路的性质,初步了解非线性振动的性质.该试题旨在考察学生通过实验观察理解概念,探索物理规律的能力.非线性振荡电路部分还可以作为RLC电路实验的拓展补充,初步观察理解非线性振动的现象和性质.

This article was based on one of the fundamental test problems and solutions of the fourth National College Students＇ Physics Experiment Competition.It contained the transient and steady state responses of linear and nonlinear LCcircuits.The linear LCcircuit experiment aimed to examine the students＇ fundamental knowledge and experimental skills.The nonlinear LCcircuit experiment concerned the properties of nonlinear oscillations.It aimed to examine the students＇ ability to understand new concept by experimental observation and explore physics by themselves.The nonlinear oscillator circuit could also be used to extend the standard RLCexperiment.