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Infrared transmitter circuit schematic

November 10, 2009 ElectroSchematics.com 3 comments

This infrared transmitter use PWM, pulse width modulation
The transmitter is equiped with LM 567, 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

Transmitter 567, Infrared, Transmitter

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Written by sidharth on November 3, 2009. Reply

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.
- Written by Marius on November 3, 2009. Reply
  
  @sidharth – do you have the infrared transmitter circuit you are talking about? We would like to present it on the website, thanks a lot.
Written by mehdi from iran on December 3, 2009. Reply

thank yuo its very good

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Infrared transmitter circuit schematic

IR transmitter circuit diagram

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