In a diode `AM`- dectector, the output circuit consist of `R=1 kW` and `C=10 pF`. A carrier signal of `100 kHz` is to be detected. Is it good

Options

A. Yes
B. No
C. Information is not sufficient
D. None of these

Answer

B

Explanation

(`2`) For demodulation `(1)/(f_(c)) lt lt RC`
`(1)/(f_(c))=(1)/(100xx10^(3))=10^(-5)s`
`RC=10^(3)xx10xx10^(-2)s=10^(-8)S`
We see that `(1)/(f_(c))` here is not less than `RC` as required by the above condition. Hence, this is not good.