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Simple IR Audio Transmitter and Receiver Circuit
https://electronicshub.org/simple-ir-audio-link-circuit/#:~:text=The%20IR%20audio%20link%20circuit%20is%20divided%20two,the%20base%20of%20the%20Q1%20via%201K%CE%A9%20resistor.
IR Based Wireless Audio Transmitter and Receiver : 6 …
https://www.instructables.com/IR-Based-Wireless-Audio-Transmitter-and-Receiver/
The Audio signal will be transmitted through an IR LED from the transmitter circuit; the IR signals will be then received by a photodiode which will be placed on the receiver circuit. The audio signal thus received by the photodiode will be very weak and hence it will be amplified by an LM386 amplifier circuit and finally played on a speaker.
IR Transmitter and Receiver Circuit Diagram
https://circuitdigest.com/electronic-circuits/ir-transmitter-and-receiver-circuit
Simple IR Audio Transmitter & Receiver Using Solar Cells
https://circuits-diy.com/simple-ir-audio-transmitter-receiver-using-solar-cells/
The Audio signal will be transmitted through an IR LED from the transmitter circuit; the IR signals will be then received by a solar cell/phototransistor which will then be placed on the receiver circuit. The audio signal thus received by the solar cell/phototransistor will be very weak and hence it will be amplified by an audio amplifier before being finally played on a speaker.
Infrared IR Transmitter and Receiver Circuit
https://circuits-diy.com/infrared-ir-transmitter-and-receiver-circuit/
An IR transmitter and receiver pair forms a simple circuit. This project explains the principle of IR communication. The 555 Timer IC operates in an astable mode. It generates the continuous pulses of the frequency. As the switch is pressed, the connection between an IR LED and the 555 timer IC closes. Then the IR LED emits the light of some frequency.
Headphones Infrared IR Receiver Circuit
https://www.electroschematics.com/infrared-headphones-receiver/
Use this infrared headphones receiver with the ir headphones transmitter. Use 600Ω headphones. BPW41N and BP104 have a filter for visible light and are centered on 950nm at 250C. At normal light illumination and 3 to 4 meters distance the audio distorsion were 1 – 2%, wich is not bad for such a simple ir headphones receiver schematic.
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