implement y=x^2 +2x+1...using op amp

Discussion in 'The Projects Forum' started by abinerd, Feb 7, 2013.

  1. abinerd

    Thread Starter New Member

    Feb 7, 2013
    3
    0
    hey any1 knws how 2 implement y=x^2 +2x+1, -4<x<4 ..i need help constructing a antilog amolifier
    :confused::(
     
  2. ramancini8

    Member

    Jul 18, 2012
    442
    118
    I din't understand texting---but I do understand electronics. Look at an AD633 from analog devices. It will give you X^2, and add an op amp to get the final equation.
     
  3. atferrari

    AAC Fanatic!

    Jan 6, 2004
    2,652
    766
    Hola Ron,

    Do you consider analog multipliers like that AD633, obsolete?

    I read that so many times that got convinced and decided not to buy one to play with it.
     
  4. #12

    Expert

    Nov 30, 2010
    16,346
    6,831
    @ra...the range of y is +/- 25.

    (You probably can understand the txt msg, it's the amolifier that has me stumped.):D
     
  5. abinerd

    Thread Starter New Member

    Feb 7, 2013
    3
    0
    sorry about the spelling mistake . I was sleepy and did not know what i was typing...thanks for pointing it out:)
     
  6. abinerd

    Thread Starter New Member

    Feb 7, 2013
    3
    0
    hey! anyone knows how 2 implement y=x^2 +2x+1or (x+1)^2, range of x is -4<x<4 .
    [ restriction:I cant use any ic] .
    I was thinking of constructing a log amplifier ,then using a adder to get 2log(x+1) which will be feed to a antilog amplifier(which by the way i just cant seem to make it work) to get the output..besides i have to come up with alternative ckt wen x=0
    I desperately need help constructing a antilog amplifier
    :confused::
     
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