Case : Read the passage and answer the question(s).
In a diode AM detector, the output circuit consists of R = 1 k\(\Omega\) and C = 10 pF. A carrier signal of 100 kHz is to be detected.
Is it good ?
Answer & explanation
Correct answer: option 2
Condition for demodulation : \(\tau\) >> Tc
\(\tau\) = R C ; Tc = \(\frac{1}{\nu_{c}}\)
R = 1 k\(\Omega\) ; C = 10 pF ; \(\nu\) = 100 kHz
\(\tau\) = 10-8 s ; Tc = 10-5 s
Since, \(\tau\) < Tc , it is no good.