Infrared circuits for remote control  

Remote Control Circuits
Added on
Jun 23, 2012
Infrared remote controls are using a 32-56 kHz modulated square wave for communication. These circuits are used to transmit a 1-4 kHz digital signal (OOK modulation) through infra light (this is the maximum attainable speed, 1000-4000 bits per sec). The transmitter oscillator runs with adjustable frequency in the 32-56kHz range, and is being turned ON/OFF with the modulating signal, a TTL voltage on the MOD input. On the receiver side a photodiode takes up the signal.
Infrared circuits for remote control - schematic

Leave Comment

characters left:

ali   Feb 16, 2008

Infrared circuits for remote control schematic diagram for transmitter and reciever