IR Music Transmitter and Receiver
The circuit operates on the principle of modulating audio signals onto an infrared beam, allowing for wireless transmission of sound. The IR music transmitter consists of an audio input stage, which could be a microphone or an audio jack, connected to an audio oscillator. This oscillator converts the audio signal into a modulated signal suitable for IR transmission. The output from the oscillator drives an infrared LED, which emits the modulated infrared light.
The receiver section includes a photodiode or phototransistor that detects the infrared signals transmitted by the LED. The detected signal is then demodulated and amplified to reproduce the original audio signal. This output can be connected to a speaker or headphones for sound playback.
The design requires careful selection of components to ensure that the audio quality is maintained over the specified distance. Additionally, considerations such as the angle of the IR LED and the sensitivity of the photodetector play crucial roles in the effective operation of the circuit. Power supply requirements and potential interference from ambient light sources should also be addressed to optimize performance.Using this circuit, audio musical notes can be generated and heard up to a distance of 10 metres. The circuit can be divided into two parts: IR music tran.. 🔗 External reference
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