文氏桥振荡电路振荡条件的研究

A study on oscillation criterion of wien bridge oscillator

在视文氏桥振荡电路中集成运放为理想运放的情况下,提出了一种推导振荡电路振 荡条件的简便方法。考虑集成运放参数odA和idr为有限值,其它参数为理想情况下,又推出了电 路振荡的幅值条件和振荡频率计算式,同时给出了测量振荡频率的理论误差。

A simple method on analyzing Oscillation criterion of wien bridge oscillator is given when both odA and idrare ideal.the expressions for criterion of amplitude and oscillation frequency and the later抯 expressions for error of theoty are all given when both odA and idrare finite.