Amplifier circuit for an infrared detector?

Discussion in 'The Projects Forum' started by geniusgoalie, Jul 10, 2006.

  1. geniusgoalie

    Thread Starter New Member

    Jul 10, 2006
    1
    0
    I'm working on a volunteer project at a local college, and I may need to do work on a 'amplifier circuit for an infrared detector'. Can anyone give me a description of what this exactly does? Also, is there a schematic or the like out there for one?

    Thanks!

    EDIT: What I really don't understand is how the amplifier circuit is related to the infared detector- I thought it would only work with sound? As you can tell, my understanding is superficial.
     
  2. mrmeval

    Distinguished Member

    Jun 30, 2006
    833
    2
    You can amplify any varying electrical signal. An IR detector is usually a semiconductor doped to be sensitive to IR, there are a variety of them.

    You'll need to provide details of what you want this amplified signal to do.
     
  3. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Here is a link to an example of a basic infrared receiver/amplifier. It is located on Dave Johnson's website www.discovercircuits.com.

    http://circuitos.cl.tripod.com/schem/r53.gif

    There are a number of additional infrared circuits on this website that you may want to examine.

    hgmjr
     
  4. The Wonderer

    New Member

    Apr 25, 2007
    2
    0
    Thank you ppl !! ^_^


    all the best for u all !

    The wonderer !!
     
  5. recca02

    Senior Member

    Apr 2, 2007
    1,211
    0
    since the voltages gen by ir sensor a quite low we amplify them using amplifiers
    like opamp.
    the principle is also used to detect %of gases in a mix since diff gases absorb
    diff freq ir.
     
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