基于EWB文氏电桥振荡电路的仿真

Simulation of Wien-bridge Oscillating Circuit Based on EWB

为了验证文氏电桥振荡器的幅度起振条件和稳幅条件,依据该电路的振荡原理,阐述了EWB仿真软件的特点及功能,并运用EWB仿真软件对文氏电桥振荡电路的起振和稳幅过程进行了仿真。结果表明,与理论分析结果一致,该仿真实验弥补了理论教学和实验资源的不足,成为现行实验的一种补充。

In order to validate the start-oscillation and fixed amplitude conditions of Wien-bridge oscillator amplitude, according to the oseillation＇s principle of the circuit, the features and functions of EWB simulation software are expounded. The start-oscillation condition and steady aamplitude process of Wien-brldge oscillating circuit was simulated with EWB simulation software. The results show that the simulation results are consistent with those of the theory analysis. This simulation experiment offsets the shortage of the theoretical teaching and experiment resources, and becomes a supplement of current experiment.