• Register
  • Login
  • looking for something?

    This infrared transmitter use PWM (pulse width modulation).
    The transmitter is equiped with LM567, tone decoder circuit. Audio signal ( at least 50mVvv ) is amplified with T1 and then it is used to modulate IC1. Infrared transmitter frequency is adjusted with P2 between 25 and 40KHz.

    IR transmitter circuit diagram

    infrared transmitter circuit schematic

    Find more projects
    
    subscribe to newsletter

    3 Responses to "LM567 Infrared Transmitter Circuit"

    1. this circuit is a little bit complicated.. using a 555 timer and a few resistors and diodes makes the circuit a lot simpler easy to construct thereby reducing the cost factor also.

      • @sidharth – do you have the infrared transmitter circuit you are talking about? We would like to present it on the website, thanks a lot.

    2. mehdi from iran says: on December 3, 2009 at 6:55 pm

      thank yuo its very good

    What do you think about this article? Leave a comment!

    You may add a picture too