The nonlinear response

• Consider an electronic amplifier

• Response is given by

y=a1x

where x is the input signal and a1 is the linear gain of the system

• Applied field is given by

x=Vcos(wt)

• Output is given by

y=a1Vcos(wt)

• The output is a faithful representation of the input

• When the applied voltage becomes large the amplifier become nonlinear and the output becomes distorted

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