OpAmp homework help please

Discussion in 'Homework Help' started by ¥öK'žy, Jun 23, 2008.

  1. ¥öK'žy

    Thread Starter Member

    Mar 27, 2008
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    0
    Hello Everyone, Can anyone help me please for this homework....
    Below I attached the schematic diagram of OpAmp.
    My question here is, what is the rule of the Transistor Q3,Q4,Q6, and Q7.
    My first thought, it was for active load, but I don't know what they're use for. Am I correct??
     
  2. bertus

    Administrator

    Apr 5, 2008
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  3. Distort10n

    Active Member

    Dec 25, 2006
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  4. ¥öK'žy

    Thread Starter Member

    Mar 27, 2008
    19
    0
    Thanx for the reply bertus, I also found that the current mirror is well described in AAC book vol 3. (I miss that before..).
    And what about the transistor Q3 and Q4? is it Darlington?
     
  5. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    Q3 and Q4 are current amplifiers.
     
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