The carrier frequency of a transmitter is provided by a tank circuit of a coil of inductance 49 h and a capacitance of 2.5 nf. It is modulated by an audio signal of 12 khz. The frequency range occupied by the side bands is
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The carrier frequency of a transmitter is provided by a tank circuit of a coil of
inductance 49 h and a capacitance of 2.5 nf. It is modulated by an audio
signal of 12 khz. The frequency range occupied by the side bands is
given L=49 h
C=2.5 nf
modulate audio signal of fm=12 khz
AM waves contains three frequency fc,(fc+fm),(fc_fm)
fc is carrier frequency ,fc-fm and fc+fm side band frequency
ω=1/√LC=1/√49*10^-6*2.5*10^-9=10^8/35=2fcπ
fc=vc=ω/2π =10^8/35*2*22/7=10^7/22=454 KHZ
vm=12 KHz
modulating frequency (fc_fm),to (fc+fm) KHZ
(454-12) and (454+12) KHz
442 - 466 KHz
hope its helped
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