Infrared Transmitter

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

  1. whycanot

    Thread Starter Member

    May 22, 2011
    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
    A DC powered IR-LED emits continously IR-light.

    If your receiver uses a typical IR-receiver IC like this:
    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.