Currently, Brazil is going through a major energy crisis caused by the lack of rain, and consequently, reducing the water reservoirs of hydroelectric plants. This caused the price of electricity in the country suffered a huge increase, affecting the domestic economy of the population.
At such times, the slogan is save, and one of the best ways to save energy is changing conventional bulb by LED lamps. Follow, in this article, 8 myths and truths about the LED!
What is LED
LED stands for light-emitting diode (or led, in Portuguese). The diode is an electronic component that allows electric current to pass only in one direction, like a one-way street. The diode was discovered in 1873, but only in 1962 was produced the first LED. We all know very well an LED. That little light that stays on when we turned off the TV, for example, is an LED.
Initially there was only the red LED, low light intensity. Then came the yellow (late 60), green (1975). In the years 80, the red LED light, enabling greater intensity reached the process of replacement of bulbs, mainly in the automotive industry.
In 1993 it was created the blue LED, color needed to produce white light when combined with red and green. The blue LED won the Nobel Prize in Physics for their creators, especially for your use. The screen of your smartphone uses three types of LED. There are already on the market LEDs that emit white light, but the color combination is cheaper and affordable.
Myths and truths about the LED
Don’t worry LED lamp
MYTH: The light emitted by the LED has no rays that cause heating characteristics, but the LED being on equipment where there is passage of electric current, electric resistance and so warm. But this heat is small when compared to that of the old incandescent bulbs, or even the fluorescent, and is dissipated to the environment by means of heat sinks, allowing the temperature to stay within the limits specified by the manufacturer. It also contributes to the increase in your life.
Is need adapters for connecting the LED lamps
MYTH: There are several models on Brazilian standard E27-typical of the old incandescent bulb socket-but there are other models that require adaptation. Most manufacturers already have made available on the market LED lamps that fit into sockets, like the old-fashioned incandescent or fluorescent without even any adaptation, dispensing, on fluorescent replacement, including the use of electronic ballast.
LEDs do not burn
MYTH: If there is excessive voltage or temperature increase, the LED will burn. In normal operating conditions your luminous intensity falls over time, and may even fail to emit light. The LED has a life span of 20 to 50000 hours, and after this time, there is loss of about 30% in brightness.
The LED lamp is more expensive
TRUTH: The price difference of a LED lamp for your fluorescent equivalent, can be more than 100%, but your economy can reach 90% a year on your electric bill. As seen above, the LED lamps have exceptionally greater durability, making the investment worthwhile over the medium and long term.
LEDs let blind people
MYTH: The light emitted by a lamp LED commercial does not hurt the retina just as a LED light, unless it is used completely irresponsible. For the LED lighting effects could harm the cells of the human retina, they should be subjected to a light 5 W density per cm ², for 12 hours. This is equivalent to looking at a 100 W lamp at a distance of approximately 10 cm to inches away, during 12 hours. Any kind of light intensity and duration that probably would damage the retina of anyone, and that’s one of the reasons why parents tell children not to look directly into the Sun.
Led is bright enough and is a poor-quality light
MYTH: That was true in the past, when the LEDs for lighting purposes that, in fact, were in development. Currently, this statement can easily be desbancada only with the observation of some technical specifications, such as that LED have color temperatures ranging from 2500 k (warm white) to 6500 k (daylight).
For ease of comparison, consider that incandescent bulbs have a factor, called the color rendering index (CRI) of 100 by definition. For your time, the values of IRC for sodium vapor lamps, low pressure, is 44. Already the IRC for mercury vapor lamps is 49. For tri-phosphor fluorescent lamps, the IRC is 73. The LEDs used commercially have IRC around 85, being very bright LEDs, suitable to be used in traffic signals, a time that should be visible even under bright sunlight.
Traffic engineers and manufacturers also use LED in the headlamp and rear lights, vehicles and also to light tunnels and roads. LEDs are also used to illuminate rooms of entire buildings.
Only LED illuminates small areas
MYTH: Already exists on the market power LED technology, with robust emitting beams of light, which are being used in warehouses, gymnasiums, churches, stadiums, parking lots and auditoriums.
LED lamps are more efficient than the other
TRUTH: The efficiency of LED in turn into electrical energy is over 95%. Compared to an incandescent, as a reference, only 5% of the electrical energy is converted into light, being the rest of the energy dissipated in heat losses.
After learning of the myths and truths about LED lamps, you became convinced of the advantages of your use? So be sure to check out the 5 benefits of automated lighting for your home!
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