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AIIMS 2006

Exam: AIIMS
Year: 2006
Subject: Physics
Chapter: Alternating Current

AIIMS 2006 · Physics · Alternating Current

Given below is the circuit diagram of an AM demodulator. For good...

Given below is the circuit diagram of an AM demodulator. For good demodulation of AM signal of carrier frequency

f

, the value of

R C

should be

Given below is the circuit diagram of an AM demodulator. For good demodulation of AM signal of carrier frequency f ,

Options

A $R C=1 / f$
B $R C < 1 / f$
C $R C \geq 1 / f$
D $R C \gg 1 / f$ .

Correct answer

D. $R C \gg 1 / f$ .

Step-by-step solution

For good demodulation,

\frac{1}{f} \ll

R C

\text{ or, }

R C \gg

\frac{1}{f} \text{. }

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