infrared waves

Discussion in 'The Projects Forum' started by raks_universe, Apr 13, 2010.

  1. raks_universe

    Thread Starter Active Member

    Mar 15, 2009
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    Can i produce infrared waves without infrared LED and by any of oscillatory circuit......
     
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
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    If you can make it oscillate at cca 10-100 THz (terahertz), then yes.
     
  3. rjenkins

    AAC Fanatic!

    Nov 6, 2005
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    Infra red is produced by anything with heat.

    Cool objects produce longer wavelengths, hotter produce progessively shorter wave infra red then visible red and through the visible spectrum as heat increases.

    'Radiant heat' is simply infra red.

    Note that for infra-red as used with remote controls etc., the sensors are narrow band and need just the right wavelength IR to work.
     
  4. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    Last edited: Apr 14, 2010
  5. DickCappels

    Moderator

    Aug 21, 2008
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    A black colerd brick wall with a fire built behind to heat the bricks to a specific temperature is a very nice IR refernece.

    It sounds like you had better stick with a diode.

    if you can wire more about your specific application, you can get a more specific answer. These guys really in to help, and given half a chance will give you the shirt off their backs if the think it would help you.
     
  6. retched

    AAC Fanatic!

    Dec 5, 2009
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    I wouldn't want to see most of these guys without a shirt.. :eek:

    @OP:

    But, what they are all saying is true. If you are trying to create a tuned IR source for use in your fan and light remote controller, you are going to need to use something accurate. Close enough just wont work.

    Why no IR LED? Cant get them? If not, tear apart some old remote controls.. from TVs and stereo systems. You can use them for your projects.
     
  7. Externet

    AAC Fanatic!

    Nov 29, 2005
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    A battery and a light bulb -or a plain flashlight- with an infrared-pass filter in front of the light source will emit infrared.
    An infrared-pass filter is the dark red window/lens you see in remote receivers/transmitters.
     
  8. raks_universe

    Thread Starter Active Member

    Mar 15, 2009
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    I just have doubt on this matter ,datz all..
     
  9. retched

    AAC Fanatic!

    Dec 5, 2009
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    I would like to know what doubt you are having? Do you doubt you can get them? Or do you want to find a "better" way?
     
  10. bertus

    Administrator

    Apr 5, 2008
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