As an electrical contractor, I am often asked by (commercial and industrial) customers, to suggest energy-cost savings. When considering lighting, we will first analyze what they are currently using and then evaluate alternatives such as LED, flourescent, or induction conversion. The same could be done with power generation systems such as solar, wind turbines, [...]
Tag Archives | Light-emitting diode
LED COMPARISONS
LED (or Light Emitting Diode) lighting products are quickly taking over the incandescent lamp world. They are meeting the needs of the present, without compromising the generation of the future’s own needs. LED lamps use up to 75% less energy than incandescent lamps, without the production of carcinogenic materials (such as lead and mercury) [...]
LED AND THE ENVIRONMENT
Tests conducted at the University of California-Davis and Irvine, on LED traffic lights, automobile headlights, brake lights and Christmas tree lights, showed unsafe levels of some toxins. After LEDs were crushed, they were found to contain lead, arsenic, nickel and other hazardous substances. Their conclusions may put a damper on the growing popularity of [...]
LED, ORGANIC LIGHT
THE BIRTH OF OLEDs: Organic Light-Emitting Diodes, or OLEDs, were invented by Dr. Ching Tang at Eastman Kodak. Although this took place in the late 1970’s, it is just now (over two decades later) finding its way into markets. It was confined to cell phones and small video displays for years, now it is [...]
LED, PROS AND CONS
ADVANTAGES OF LED LIGHTING Some advantages of LED lighting over conventional lighting sources: Lifetime LED lights can last from 30,000 – 75,000 hours (50,000 hours is the average) depending upon the quality, durability and use of the fixtures. With an average use of 6.5 hours per day, this can amount to over 21 years of [...]
LED, WHAT IS IT?
Light Emitting Diode (LED) is a semiconductor light-producing unit. When an electrical current passes through the unique materials, there is a recombination of positive and negative charges resulting in the emission of photons, as light energy. This action is called electroluminescence. The color of the light is determined by the energy gap of semiconductor and [...]
LED LIGHTING HISTORY
Light Emitting Diode (LED), or Solid Stage Lighting (SSL), was invented in the 1920’s, but no practical uses could be found. Then in 1961 the first serious work began on industrializing this technology here in the United States, at Texas Instruments and General Electric. However, with costs of $200 per unit, practical use remained years [...]
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