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A carrier wave of peak voltage 12 V is used to transmit a message signal.

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asked Jan 11, 2018 in Physics by sforrest072 (157,439 points) ● 61 ● 411 ● 949

A carrier wave of peak voltage 12 V is used to transmit a message signal. What should be the peak voltage of the modulating signal in order to have a modulation index of 75%?

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answered Jan 11, 2018 by mdsamim (213,225 points) ● 5 ● 10 ● 15
selected Jan 11, 2018 by sforrest072
 
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Amplitude of the carrier wave, Ac = 12 V
Modulation index, m = 75% = 0.75
Amplitude of the modulating wave = Am Using the relation for modulation index:

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