Infrared cordless headphone circuit electronic. Using this low-cost project one can reproduce audio from TV or other electronic devices without disturbing others. It does not use any wire connection between TV and headphones. In place of a pair of wires, it uses invisible infrared light to transmit audio signals from TV to headphones. Without using any lens, a range of up to 6 metres is possible. Range can be extended by using lenses and reflectors with IR sensors comprising transmitters and receivers.
This is very interesting circuit.
What is the maximum range of ir transmitter and receiver phototransistor.
Can i use other transistor at the place of BEL187
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hw can i icorporate a pic microcontroller in this design