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In a diode detector, output circuit cons...

In a diode detector, output circuit consists of a resistor of `10MOmega` and a capacitor of 1pF.Calculate the carrier frequency it can detect.

Text Solution

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Resistance = R = `10 M Omega`
` = 10 xx 10^(6) Omega =10^(7) Omega`
Capacitance ` = C = 1 pF = 10^(-12) F `
RC `= 10^(7) xx 10^(12) = 10^(-5) S `
Let f = Carrier frequency .
For the good detection of signal ,
` (1)/(f_(c)) lt lt RC`
`rArr f_(c) lt lt (1)/(RC)`
`rArr " " f_(c) gt gt 10^(5) Hz or f_(c) gt gt 0.1 MHz`
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