IR Detector Circuit

17

Carlos demonstrates how to build a simple IR detector. Looks like it could be done for a dollar or two.

“An IR signal is “seen” by a reverse biased IR diode which produced an electrical signal according to the light intensity. This signal is then amplified trough a transistor and used to power an ordinary LED. This means that the LED will light up when the IR diodes receives some IR light (from a TV remote for instance).”

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17 Comments


  1. Nice, thx for this simple circuit.



  3. Finally, I way to find out if it’s a rogue TV or a TV-B-Gone being used to kill it…
    I’ll get you pranksters yet!!! (haha)


  4. how about this … use your cell phone camera to detect IR



  6. electronic circuit for amplifire infrared reciver


  7. wanted a schematic diagram of a cellphone detector which can detect mobile phones even at the standby mode


  8. how to detect spy infrared camera in room.please send simple detector circuit diagram


  9. how to detect spy infrared camera in a room.please send simple circuit diagram

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