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  • An amplitude modulated wave is as shown in the figure Calculate. (i) the percentage modulation (ii) peak carrier voltage and (iii) peak value of information voltage

An amplitude modulated wave is as shown in the figure. Calculate

(i) the percentage modulation

(ii) peak carrier voltage and

(iii) peak value of information voltage

Answers (1)

Explanation:-

As shown in the figure,

Maximum voltage, Vmax = 100/2 = 50 V

Minimum voltage, Vmin = 20/2 = 10 V

i) The percentage modulation quantifies how much the amplitude of the carrier wave is varied by the modulating signal.

Percentage modulation = (Vmax - Vmin)/(Vmax + Vmin) \times 100

After substituting the values of Vmax and Vmin, the percentage modulation = 66.67%

ii) the formula of peak carrier voltage is Vc =( Vmax + Vmin)/2

Thus,Vc = 30 V

iii) Peak value of information voltage  = Vm = uVc = 20V

Posted by

infoexpert21

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