“In this experiment I will describe you a way where the light from 10W Power LED diode is used for tarnsfering Audio signal wirelessly.
Supplies
- 10W Power Led
- IRF3205 Mosfet
- Trimmer Potentiometer, 100 kohm
- Capacitor 100 µF
- Resistor 4.75k ohm x 2
Li-Fi is a light communication system that is capable of transmitting data at high speeds over the visible light, ultraviolet, and infrared spectrums. The term was first introduced by Harald Haas in 2011. The Li-Fi system consists of normal LED light bulbs and modulating circuits.
LED bulbs are semiconductor devices, which means the current, and therefore the illumination can be modulated at extremely high speeds which can be detected by the photo-detector.
Using this technique allows for high-speed information can be transmitted from an LED light bulb. So, the same light energy used for illumination may also be used for communication.
Using this technique allows for high-speed information can be transmitted from an LED light bulb. So, the same light energy used for illumination may also be used for communication.
In this way, the distance at which transmission can be carried out is drastically increased, and at the same time, due to the strong intensity of light that reaches the receiver, the influence of the ambient light has an insignificant effect.”