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help needed in analyzing this circuit

agnaatha

Mar 8, 2011
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Mar 8, 2011
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Hi all, I badly need to know what this circuit does and how it works. Please help me by explaining what the fet part, rc part does here.
14njkv7.jpg



http://i52.tinypic.com/14njkv7.jpg
 

davenn

Moderator
Sep 5, 2009
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looks pretty much like a FET, RF amplifier followed by a diode detector and an audio amplifier :)

have you got any more background on the cct ? where did it come from ?

Dave
 

agnaatha

Mar 8, 2011
2
Joined
Mar 8, 2011
Messages
2
looks pretty much like a FET, RF amplifier followed by a diode detector and an audio amplifier :)

have you got any more background on the cct ? where did it come from ?

Dave
Its a question from an unknown book. In the question it is regarded as EM survey unit
Here is the full question, dont know from which book it is..
1g3s06.jpg

Sorry I should have posted this before.
 

duke37

Jan 9, 2011
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Jan 9, 2011
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5,364
It looks as if the circuit will not work without a DC path for the diode. Add a resistor from the junction of C and the diode to ground. It would also help if there was power to the amplifier!
 
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