文氏桥振荡器研究性实验设计

摘要

针对低年级本科生专业知识尚不完整而开设研究性实验较为困难的问题,以文氏桥振荡器实验为例,提出增加原有基础性实验内涵,设计了以实验问题与实验现象探究为核心的研究性实验.详细分析了文氏桥振荡器的工作原理、频率偏差及频率上限等问题,并给出了具体的实验设计.%It is difficult to develop research-oriented experiment because freshmen,sophomores and even j uniors haven't got enough professional knowledge.A research-oriented experiment based on Wien-bridge oscillator is designed.The experiment is focused on exploring and researching its phenomena and problems.The theory, frequency deviation and frequency upper limit are analyzed in detail,and the experiment schemes are introduced point by point.