Control

Discussion in 'General Electronics Chat' started by atlas, Aug 4, 2006.

  1. atlas

    Thread Starter Member

    Jul 18, 2006
    28
    0
    Hi guys,

    I Have two inverting configuration stages of op-amps, and my input to the first stage is negative voltage, so the output of the second inverting stage is negative.. Would the transfer function of the two inverting configuration stages of op-amps look like this:

    Eout= (-R2/R1) (-R3/R4) (-Ein)

    note that : -R2/R1 is the gain of the first inverting stage

    -R3/R4 is the gain of the second inverting stage

    Ein is negative since the input to the first inverting stage is negative....

    Does anyone know whether this result correct or not???

    Thanks a lot .....
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,145
    1,791
    Seems right. We are talking DC here aren't we?
     
  3. atlas

    Thread Starter Member

    Jul 18, 2006
    28
    0
    yeah DC ... I just need to confirm whether it's correct or not as I'm driving the transfer function for my circuit......
     
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