摘要
本文基于探索RC桥式正弦波振荡电路工作特性的目的,运用Multisim 10软件对RC桥式振荡电路进行了虚拟仿真实验,给出了Multisim仿真实验方案,仿真了电路从起振到稳幅输出的工作过程,测试了电路的电压放大倍数、反馈系数及自激振荡条件等技术指标,通过改变电路元件参数进行对比观察了电路的输出幅度变化、非线性失真等特性,虚拟仿真实验结果与理论分析计算结果相一致.结论是仿真实验可直观形象地描述电路的工作特性,有利于系统地研究电路的构成及电路元件参数的选择.
Based on the software of Multisim 10,we simulate the properties of a RC-Wien-bridge sinusoidal oscillator circuit in terms of a proposed Mltisim simulation scheme.The work processes from the start-oscillation to the fixed amplitude output of the circuit,and all is simulated,and the qualifications such as the amplified voltage＇s multiple,feedback coefficient,and the self-excitation oscillation are measured.We find the properties of the output amplitude and the nonlinear distortion factor changing with the circuit＇s parameters are well consistent with the theoretical ones.A conclusion can then be drawn that simulation experiments describes well the circuit＇s work properties,and can be used to choose the parameters of the circuit＇s elements.
出处
《渤海大学学报（自然科学版）》
CAS
2012年第4期324-328,共5页
Journal of Bohai University:Natural Science Edition
基金
2012年度辽宁省普通高等教育本科教学改革研究立项项目(辽教发[2012]130号)
2011年度渤海大学高等教育教学改革研究项目
