wien-bridge oscillator circuit design

Thread Starter

Imwilling

Joined Jun 12, 2012
1
Hi everyone. I need to design a wien bridge oscillator with the following specifications I will be using orcad to simulate. -: Three decade frequency ranges converging 20Hz to 20kHz with output voltage of 5V rms. So far I gather the RC network is used to determine the frequency range but I dont understand the theory. Please help anyone
 

Audioguru

Joined Dec 20, 2007
11,249
The theory of a Wien bridge oscillator is described in many tutorials about it in Google.
It has a transistor or opamp amplifier with a gain of slightly more than 3. Positive feedback is used with a bandpass filter made with two RC circuits. An amplitude stabilizing circuit sets the output level.
 
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