Nyquist Criterion
Criterion
Of Nyquist:
The Aβ is a
function of frequency. Points in the complex plane are obtained for the values
of Aβ corresponding to all values of ‘f’ from - a to a . The locus of all these points
forms a closed curve.
The criterion of
nyquist is that amplifier is unstable if
this curve encloses the point (-1+j0),
and the amplifier is stable if the curve does not enclose this point.
The amplifier is unstable if this curve encloses the point –1+j0
and the amplifier is stable if the curve does not enclose this point
The amplifier is unstable if this curve encloses the point –1+j0
and the amplifier is stable if the curve does not enclose this point
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