Home
Class 12
PHYSICS
In a detector, output circuit consists o...

In a detector, output circuit consists of `R = 10kOmega and C = 100 p F.` Calculate the frequency of carrier signal it can detect.

Text Solution

Verified by Experts

Here, `R = 10kOmega = 10^4Omega`
`C = 100 p F = 10^(-10) F`
Time constant of the circuit
`tau = RC = 10^4 xx 10^(-10) = 10^(-6)`s
For demodulation, the condition is
`1/v_C lt lt RC or v_c gt gt 1/(RC)`
i.e., `v_c gt gt 1/10^(-6) = 10^(6) Hz`
`:.` Frequency of carrier signal must be much
greater than `10^6 Hz or 1 MHz.`
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEMS

    PRADEEP|Exercise Short A/Q (3 marks)|8 Videos

  • COMMUNICATION SYSTEMS

    PRADEEP|Exercise Long answer questions|3 Videos

  • ATOMS AND NUCLEI

    PRADEEP|Exercise Assertion- Reason type question 12|1 Videos

  • CURRENT ELECTRICITY

    PRADEEP|Exercise Problems for Practice (B)|2 Videos

Similar Questions

Explore conceptually related problems

Ina detector, output circuit consists of R=10kOmega and C=100 pF , the frequency (in MHz) of a carrier signal it can detect must be greater than:

In a diode detector , output circuit consists of R = 1 M omega and C = 1 pF . Calculate the carrier frequency it can detect.

In a diode AM detector, the output circuit consists of R = 1 k Omega and C = 10p F. A carrier signal of 100 kHz is to be detected. Is it good? If yes, then explain why? If not, what value of C would you suggest ?

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

In a diode AM - dectector, the output circuit consist of R=1 kOmega and C=10 pF . A carrier signal of 1000 MHz is to be detected. Is it good

In a diode AM detector with the output circuit consists of R= 1M Omega and C=1 pF would be more suitable for detecting a carrier signal of

In a diode AM detector with the output circuit consists of R= 1M Omega and C=1 pF would be more suitable for detecting a carrier signal of

In a diode dtector , output circuit consists of a resistance of 5 M omega and a capacitor of 100 pF . Calculate the carrier frequency it can detect.

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