towards to sustainability via greenary

 

LED - FAQ

 
LED stands for light-emitting diode. LEDs are small light sources that become illuminated by the movement of electrons through a semiconductor material. LEDs have been around for many years and have been used in various applications for a long time. LED traffic lights are used widely in Australia and most of us still use a remote control with an infra-red LED as the transmitter or a DVD or CD player with the LED to read data.
 
 
Yes. LEDs require very little electricity to power them up because they are extremely efficient. Their design converts approximately 90% of the electricity they consume into light. In a conventional light the figure is more like 10 – 15%, with the rest of the electricity effectively wasted in lost heat. LED downlights, for example, draw only 5 Watts of electricity to light up, compared to 50 Watts drawn by a traditional halogen downlights. That is a saving in electricity consumption of approximately 90%. Not bad when the cost of electricity is continually rising.
 
 
As well as being highly energy-efficient, some lights are suitable for retro-fit installation and new builds. This means they can be used to replace existing lights (especially inefficient halogens) and/or be installed into buildings being designed for the future. Emerald Planet lights are all thoroughly tested before they are released onto the market. They are all CE approved, ROHS compliant and all tested to meet minimum safety standards. They can be truly relied upon for longevity and for performance.
 
 
The usual low-energy light technology on the market today is CFL – standing for Compact Fluorescent Light. These tend to be curly in shape and give off a bluey-white light. In effect they are the same technology as the neon fluorescent tubes often found in offices or kitchens, simply engineered to fit into smaller fittings (hence “compact”). CFL technology is energy-efficient, as it uses less electricity than traditional lighting. However, CFLs contain mercury and other toxic materials in measurable quantities – they need these materials in order to work. They also tend to be made of glass and if they break they are a health hazard from both the glass shards and the mercury. This makes them expensive to handle and dispose of. In addition CFL lights tend to flicker and usually take time to come on, LEDs have none of these problems.
 
 
NO – LEDs do not flicker to the human eye.
 
 
Our LEDs comply with Restriction of Hazardous Substances legislation, and will not explode like incandescent bulbs, or shatter and spread powder throughout your kitchen like fluorescent tubes. There is no start up flickering.
 
 
Our experimental LED house shows a saving of 80% on the cost of running lights, compared with a house lit with conventional halogen bulbs.
 
 
Most LEDs are monochromatic. Light color is associated with the light wavelength. LEDs made with different semiconductor materials emit lights in different wavelengths. LED light wavelengths range from 400 nanometers (blue) to 800 nanometers (red). The colors of popularly available LEDs in the market are red, orange, amber, yellow, green, blue and white
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