Question

A carrier wave of peak voltage $15V$ is used to transmit a message signal. Find the peak voltage of the modulating signal in order to have a modulation index of $60$%.

Answer 1

Given $A_c=15V$, MU = 60% = 3/5 and find $A_m=?$

$MU=\frac{A_m}{A_c}$

$\frac{3}{5}=\frac{A_m}{15}$

$\therefore A_m=9V$