Basic Single Tuned Amplifier

Discussion in 'Homework Help' started by Steve1992, Mar 3, 2007.

  1. Steve1992

    Steve1992 Thread Starter Senior Member

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    With ref. to attached circuit, am I right with the following statement?:

    1. Amplifier load is a parallel resonant circuit.

    2. Tuned to give high Z at the selected frequency, by varying C1.

    3. At resonance, the current is a minimum, Voutput will be large:

    Voutput = VDD - Voltage across L1,C1.



    Steve
     
    #1
  2. Ron H

    Ron H AAC Fanatic!

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    You're basically right, but in (3), do you think the output amplitude is a function of the input amplitude?
     
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  3. Steve1992

    Steve1992 Thread Starter Senior Member

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    Thanks Ron.

    The circuit is a basic A.F. amplifier - instead of a load resistor at the drain, there is the cap. Ind. parallel combination.

    So the A.F. amp. calculations can be used:
    Vouput = Vdd - Voltage across resistor.
     
    #3
  4. Ron H

    Ron H AAC Fanatic!

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    Yeah, but doesn't the output also swing above Vdd?
    Since you posted this under homework help, I'm assuming that's what it is, so I'm being coy.:D
     
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  5. narayanbalaji

    narayanbalaji New Member

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    hi,
    can u pls say me the advantages and disadvantages of single tuned n double tuned amplifiers..
     
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  6. Caveman

    Caveman Active Member

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    narayanbalaji,

    Why didn't you just start your own thread?
     
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