Skip to main content

Posts

Showing posts with the label LM567 Infrared Transmitter Circuit

LM567 Infrared Transmitter Circuit

LM567 Infrared Transmitter CircuitThis 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.