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Low Pass Active Filter Design Help

Discussion in 'Electronic Design' started by sannuti, Feb 22, 2006.

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  1. sannuti

    sannuti Guest

    Hi everyone,
    Need some help with this problem. I need to design a low-pass active
    filter circuit such that its roll off attenuates frequency components
    at 14kHz or more by more than 17dB, Also it is desired to have the
    passband gain positive that doesnot deviate from 40dB by more than 3dB,
    The passband frequency needed is 280Hz and below.

    Hope that someone can help me ASAP . Thanks.....
     
  2. John Larkin

    John Larkin Guest

    Get Don Lancaster's "Active Filter Cookbook."

    John
     
  3. sannuti

    sannuti Guest

    Thanks a lot John will try to get hold of the book....appreciate that
     
  4. Bob Monsen

    Bob Monsen Guest

    If you have an RC filter where 280*2*PI=1/RC, what will the amplitude of a
    14kHz sine wave be when passed through it? How about after you amplify it
    by 100?

    BTW, questions like this are often better received over on the
    sci.electronics.basics newsgroup.

    --
    Regards,
    Bob Monsen

    When you look at yourself from a universal standpoint, something
    inside always reminds or informs you that there are bigger and better
    things to worry about.
    Albert Einstein, The World as I See It.
     
  5. ehsjr

    ehsjr Guest

  6. me

    me Guest

    then again, its more on topic than most of the "stuff" here...
     
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