2 stage amplifier question

  • Thread starter BigMan52
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  • #1
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Homework Statement


Calculate the voltage gain for each stage and the overall voltage gain.

Homework Equations


Ao (Gain) = - Rf/R1
3. The Attempt at a Solution [/B]
For the first stage I got:
Gain = - 15/10 = - 1.5
For stage 2 I got:
Gain = -5.13.3 = -1.55
Multiplying the 2 together to get an overall positive gain of -1.5 x -1.55 = 2.34
 

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Answers and Replies

  • #2
LvW
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Any question?
 
  • #3
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Is this the correct method and answer?
 
  • #4
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Do I multiply or add the voltage gains for each step?
 
  • #5
LvW
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Vout/Vin=(Vout/Vx)*(Vx/Vin).
Sounds logical, doese it not?
 
  • #6
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Thank you, yes it does.......
 
  • #7
rude man
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Do I multiply or add the voltage gains for each step?
You can add if you go dB's.
Meantime, go with post 5.
 
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  • #8
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Thank you very much!
 

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