LM833 preamp design

Discussion in 'The Projects Forum' started by ali8tor, Apr 2, 2013.

  1. ali8tor

    Thread Starter Member

    May 29, 2012
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    Hi

    I have a project Im working on and I'm a bit stuck, I need to consider to design a preamp using an LM833?

    thanks guys
     
  2. crutschow

    Expert

    Mar 14, 2008
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    What is your question about using an LM833? What are your requirements?
     
  3. ali8tor

    Thread Starter Member

    May 29, 2012
    43
    0
    Hi

    there are no major specifications, it only need to take in a Mic signal and amplify it.
     
  4. t06afre

    AAC Fanatic!

    May 11, 2009
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  5. ali8tor

    Thread Starter Member

    May 29, 2012
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    hi im still abit confused about the resistor/ capacitor values and how do i figure out the filter order?

    thanks :)
     
  6. #12

    Expert

    Nov 30, 2010
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    Use the "zoom" or magnification feature of your PDF reader to see the resistor and capacitor values. The high pass filter is first order, the low pass filter is second order.
     
  7. ali8tor

    Thread Starter Member

    May 29, 2012
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    okay i got that thanks, how much gain would you recommend using for the Lm833 preamp?
     
  8. Wendy

    Moderator

    Mar 24, 2008
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    Interesting chip. What made you decide to use it?

    I have a similar project in progress using a different op amp. I'm making mine variable gain. When I have a gain value I will try to post it here.
     
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  9. #12

    Expert

    Nov 30, 2010
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    The gain that is in the circuit provided.

    You see, without knowing what kind of microphone or what your final output goals are, we can't guess how much gain. Apparently you can't either. Just build the obvious one and if it sucks, at least we have a starting point.

    "Interesting chip"
    Yeah. They are so old that mold has grown on the ones I have.
     
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  10. ali8tor

    Thread Starter Member

    May 29, 2012
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    Im just experimenting with this LM833 and I heard its a decent chip guess I'll find out soon, awesome look forward to seeing it!
     
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