RC文氏桥振荡器稳幅环节的仿真研究  

Simulation on Amplitude Stabilization Circuit for RC Wien Bridge Oscillator

作　　者：邹学玉[1] 

机构地区：[1]长江大学电子信息学院,湖北荆州434023

出　　处：《长江大学学报（自然科学版）》2011年第8期91-93,105,共4页Journal of Yangtze University(Natural Science Edition)

摘　　要：非对称RC文氏桥振荡器的稳幅环节直接影响到在整个频率调节范围内能否起振、并且能否获得较好的正弦波。采用电路稳定性分析方法,通过研究非理想条件下电路振荡条件,导出了理想条件下振荡电路的振荡频率和起振与平衡条件,设计了相应的稳幅环节,并采用Multisim对稳幅环节的设计进行仿真试验,仿真结果表明该计算方法是可行的,可以为非对称RC文氏桥振荡电路的设计提供参考。Whether the asymmetric RC Wien bridge circuit can start in wholly frequency bounds and output a pure of sine wave signal is affected by amplitude stabilization.In this paper,the circuit stability analysis method is applied to analyze the Wien bridge oscillatory condition for non-ideal circuit,and the circuit's oscillation frequency and starting conditions are derived.The relevant amplitude stabilization circuit is designed,simulated and validated by Multisim Tool.It provides the reference for the design of asymmetric RC Wien bridge oscillator.

关 键 词：文氏桥振荡器 振荡频率 起振条件 稳幅电路 

分 类 号：TN752[电子电信—电路与系统]