The acronym LED means Light Emiting Diodes (Diodes that emit light), these diodes were created a few years after the start of S XX. Although they did not see the light until some time later, when the production cost of these was reduced. Many people today know the LEDs since they are bright and colored lights that have replaced the incandescent bulb . LED diodes were used initially to produce infrared light, waves that are undetectable by the human eye. These diodes are used for many commands, avoiding that we have to get up every time we were to change the channel or increase the volume, and different remote measurement devices. It was not until the mid-1990s that we were able to start producing LEDs that emitted visible light . It was at that time when it began to be used for emergency lights, televisions and light bulbs. LED diodes have a smaller size, lower energy consumption and allow a greater energy saving than a conventional bulb. In addition, LED diodes have a life expectancy three to twenty times greater than fluorescent or incandescent bulbs.
The LEDs are composed, in general terms, by two diodes with opposite loads connected by a cable , inside a plastic capsule. When we add electric current it causes the negative electrons of one part to combine with the positive areas of the other, causing energy to be released in the form of visible light. At the beginning when a company wanted to have LEDs of different colors, what it did was to change the color of the encapsulation of the LEDs . Until someone had the idea to place three diodes of three different colors in the same capsule. Changing the intensity of each one of the diodes that make up this LED you can choose the color that will emit.
Although the cost of light bulbs and LED lighting continues to fall , it still has a higher price than conventional bulbs, but this can be offset by its long life expectancy and energy savings. The weak point of the LEDs is the creation of natural lights, although there is a variant of the RGB LED called RGBW LED that achieves an exact white light and not a bluish white light like that of the RGB LEDs.
Posted by Kamaldeep Singh on March 31, 2018