In an oscillator,for sustained oscillations,t | vedclass

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(C) The Barkhausen criterion states that for an oscillator to produce sustained oscillations,the loop gain of the feedback amplifier must be equal to

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(C) The Barkhausen criterion states that for an oscillator to produce sustained oscillations,the loop gain of the feedback amplifier must be equal to unity.Mathematically,this is expressed as $A \beta = 1$,where $A$ is the voltage gain of the amplifier without feedback and $\beta$ is the feedback factor.Additionally,the total phase shift around the loop must be $0^\circ$ or an integer multiple of $360^\circ$.

In an oscillator,for sustained oscillations,the Barkhausen criterion is $A \beta$ equal to (where $A =$ voltage gain without feedback,$\beta =$ feedback factor).

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