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.
If it is NOT good, what is the value of C that you would suggest ?
Answer & explanation
Correct answer: option 1
Condition for demodulation : \(\tau\) >> Tc
\(\tau\) = R C ; Tc = \(\frac{1}{\nu_{c}}\)
R = 1 k\(\Omega\) ; C = 1 \(\mu\)F ; \(\nu\) = 100 kHz
\(\tau\) = 10-3 s ; Tc = 10-5 s
Since, \(\tau\) >> Tc