For an amplitude modulated wave,


For an amplitude modulated wave, the maximum amplitude is found to be 10 V while the minimum amplitude is found to be 2 V. Determine the modulation index μ. What would be the value of μ if the minimum amplitude is zero volt?


Maximum amplitude, Amax = 10 V

Minimum amplitude, Amin = 2 V

Modulation index μ, is given by the relation:

$\mu=\frac{A_{\max }-A_{\min }}{A_{\max }+A_{\min }}$


If $A_{\min }=0$,

Then $\mu^{\prime}=\frac{A_{\max }}{A_{\max }}=\frac{10}{10}=1$


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