Amplifier circuit for an infrared detector?

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.

 

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.

 

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

 

Thank you ppl !! ^_^


all the best for u all !

The wonderer !!​

 

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.