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 intex of 75 % ?
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I don't know very very sor5
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The peak voltage of modulated wave should be equal to Am = 9 V to have the required condition.
- It is given that :
The peak voltage of carrier wave, Ac = 12 V
Modulation Index, μ = 75 % = 75 / 100 = 0.75
The peak voltage of modulated wave, Am = ?
- We know that :
μ = Am / Ac
⇒ Am = μ × Ac
⇒ Am = 0.75 × 12
⇒ Am = 9 V
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