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  #1  
Old 03-03-2007, 09:36 AM
Steve1992 Steve1992 is offline
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Default Basic Single Tuned Amplifier

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
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  #2  
Old 03-04-2007, 03:14 AM
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Ron H Ron H is offline
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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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Old 03-04-2007, 10:38 AM
Steve1992 Steve1992 is offline
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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.
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  #4  
Old 03-04-2007, 02:46 PM
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Ron H Ron H is offline
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Quote:
Originally Posted by Steve1992 View Post
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.
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.
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Old 04-22-2008, 04:32 PM
narayanbalaji narayanbalaji is offline
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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  
Old 04-22-2008, 04:43 PM
Caveman Caveman is offline
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narayanbalaji,

Why didn't you just start your own thread?
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