Wien Bridge Oscillator
Wien Bridge Oscillator is a phase shift Oscillator that generates sine wave. It is a two-stage Resistor Capacitor coupled amplifier circuit. It has good stability at its resonant frequency, low distortion and is exceptionally simple to tune but the phase shift of the output signal is not same as RC phase shift Oscillator.
In the Wien Bridge Network shown below, one branch has resistor(R1) and capacitor (C1 ) components are connected in series and the other branch has the Resistor (R2 ) and Capacitor (C2 ) are in parallel along with the resistors R3 and R4.
Wien Bridge Network
Here resistors and capacitors are used to find the Impedance. For a series connection of R1 and C1 , Impedance is,
[Tex]Z_S = R_1 +X_{C_1}[/Tex]
For a parallel connection of R2 and C2 the Impedance is,
[Tex]Z_{P}=R_{2}|| X_{C_{2}}[/Tex]
Wien Bridge Oscillator
In this article, we will go through the Wien Bridge Oscillator, first, we will start our article with the introduction of the bridge oscillator frequency, then we will go through the RC phase shift network and oscillator output gain and phase shift, then we will see Wien bridge oscillator frequency, then we will go through RC network and construction of bridge oscillator frequency using IC 741 operational amplifier, at last, we will conclude our article with solved examples, advantages, disadvantages and some FAQs.
Table of Content
- Wien Bridge Oscillator
- RC Phase shift Network
- Oscillator Output Gain and Phase Shift
- The RC Network
- Construction
- Solved Examples
- Advantages of Wien Bridge Oscillator
- Disadvantages of Wien Bridge Oscillator
- Applications of Wien Bridge Oscillator