While it seems like a new new technology, in reality the LED light was born in the 60s of the last century. The first LED was in fact developed in 1962, but it took some time (about fifty years) before reaching today's applications for energy-saving lighting.
Another curiosity of the LED light is that it is not born white. What we see white and which we use to illuminate is obtained by coating a blue LED with yellow. The most common LEDs emit red, orange, yellow, green and blue light; it is with their combination that the desired shades are obtained.
The acronym LED means Light Emitting Diodes - diodes that emit light - and these diodes are made of semiconductor materials such as gallium arsenide, gallium phosphide, silicon carbide and indium gallium nitride (gallium and indium are rare metals). When these semiconductors are crossed by electric current they emit light energy that we see as the classic LED light.
The LEDs that today are becoming more and more popular in lighting solutions also in the home because of the high energy efficiency of LED light they are more or less the same used for years in electronics, in particular in remote controls and classic stand-by indicators.
The first applications of the LED light they are in traffic lights and in the position and stop lights of cars. At the same time, applications were seen in information displays and public lighting, especially decorative, squares and monuments. Then came the LED lamps.
The advantage of an LED lamp is that, with the same light emitted, it consumes up to 80% less electricity than a normal incandescent lamp. Furthermore, LEDs have an average lifespan ranging from 50,000 to 100,000 hours, which is extremely long. These features, combined with advances in technology, have made the LED light particularly interesting at a time when energy saving has become important.
There LED light it is a 'cold light' because the LEDs do not heat up. The LEDs light up and shine immediately, without the latency and heating phase typical of low-consumption fluorescent lamps, and the absence of mercury and lead inside them improves the disposal phase.
Today there are lamp models a LED light which can directly take the place of traditional lamps in existing systems. There are also solutions to LED light operating at very low voltage, from 12 VDC to 48 VDC.
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