LED, Light Emitting Diode, i.e. diodes that emit light when crossed by current, are manufactured using semiconductors and manage to combine the most diverse lighting requirements, both for the wide range of commercially available tones for luminous efficiency, both economically and in terms of the cost of buying and consumption than other types of lamps.
The scope is vast, from electronics in General, to alerts, alarms and detectors of presence and/or movement, at the traffic lights, appliances, residential lighting, road, etc.
Same light radiation emitted LEDs have, in terms of life expectancy, up to about 100,000 hours, equivalent to 10 times that of fluorescent lamps and 100 times that of incandescent lamps, with consumption up to 90% compared to them; the low power consumption are bound to values of supply voltage (usually 12 – 48 V) and current absorbed, continue, and contained
Characteristics of LEDs
Led lamps also have a heat output nothing compared to incandescent and fluorescent than have the advantage of an instant on and not influenced by ambient temperature; models that incorporate appropriate attacks can directly replace incandescent lamps; than fluorescent lamps, LEDs are characterized by the absence of toxic substances, which allows for easy disposal.
The small size of the led lamps allow you to tackle even the most original design needs and/or support, for which there is also the possibility of programming softwareactivations of the lamps and the management of the number of operating hours; In addition, the reliability of these lamps is enhanced by the characteristic for which the failure of a single led does not affect that of the remaining LEDs.
Led lamps offer the possibility of different colours, which arise from the basic combinations: red, yellow, green and blue.
The growing success and the growing expansion of led lighting industry are, curiously, accompanied by the commercial tendency to disappear (in the sense of not being employed) of the same led electronic applications for which they were born and they are widespread.
In fact, many manufacturers of appliances, in recent years, for the purpose of building energy reduction and reduction of pollutant emissions, such as CO2 to produce electricity, are reducing significantly the presence of LEDs on appliances; for many of them, often, stand-by State, electric presence, network presence, and many other similar status are indicated by a led colorful, generally red, green or yellow which remains, in many cases, active throughout the life of the same appliances.
The consumption of single led, although insignificant on an annual basis, being of the order of a few euros, they become no longer negligible if multiplied by the number of years of life of an appliance and all appliances in the world.