Infrared Transmitter

Discussion in 'The Projects Forum' started by whycanot, Jul 27, 2011.

  1. whycanot

    Thread Starter Member

    May 22, 2011
    54
    0
    Can anyone provide me the most simplest infrared transmitter circuit schematic for me? the infrared must be continuous ~ coz i have another done circuit which will be sounded once there's unable to detect any infrared signal ~
    means: have infrared = will not be sounded
    no infrared = sounded
    *p/s: i tried with a 15ohm resistor , 1 1.5V battery , 1 IR LED connected in series . the IR LED is lighted up (check by digital camera) but somehow my receiver circuit keep sounded . i guess it 's becoz of the frequency problem in IR LED .
     
  2. praondevou

    AAC Fanatic!

    Jul 9, 2011
    2,936
    488
    A DC powered IR-LED emits continously IR-light.

    If your receiver uses a typical IR-receiver IC like this:
    [​IMG]
    you need to provide us with its specifications (frequency). You build then an oscillator which turns on and off your IR-LED. Also, depending on the type of TSOP you have the transmitter may need to send bursts of pulses.
     
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