amplitude gain stabilization ensure that
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The given statement can be analysed with respect to observation of the Wien bridge oscillator. Actually, when we keep on increasing the input amplitude, the filament inside it slowly gets heated as it keeps on increasing and corresponding to this, the resistance also increases in further.
The overall design of the circuit is made in such a way, that there is a corresponding decrease in loop gain and it ensures that the resultant amplitude decreases considerably so as to run everything well. It is because of this that there is a negative feedback system as a result.
There should be a very low frequency for this and the stability of frequency is further affected by changes in temperature, load variation etc.
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