摘要
在分析正弦波振荡电路是否起振时,通常用相位条件和幅度条件来判断。其中的选频网络一般可以设置在放大电路中,也可以设置在正反馈网络中。本文对RC文氏电桥电路进行电路变形,通过研究表明,选频网络甚至可以设置在放大电路的负反馈网络中,从而更进一步揭示了电路的起振条件。
Phase condition and amplitude condition is usually used when estimating the oscillatory condition of the sinusoidal oscillator. The selecting frequency network usually located in the amplifying circuit, or located in the positive feedback network. We change the configuration of the RC wien bridge circuit and find out that the selecting frequency network can even locate in the negative feedback network. This provides a further understanding of oscillatory condition of the circuit.
出处
《玉林师范学院学报》
2004年第5期38-41,共4页
Journal of Yulin Normal University
关键词
文氏电桥
起振条件
反馈网络
选频网络
电路仿真
wien bridge
oscillatory condition
feedback network
selecting frequency network
circuit simulation
