Articles Light - 3

R. Colin Johnson EE Times Today, white LEDs are not really white, but instead use techniques such as combining the light emission of separate red, blue, and green (R-G-B) LEDs, or coat blue LEDs with yellowish phosphors. Now, researchers at the ...

The current trend, due to the constant increase of energy prices and lack of capacity, is for the management of large industrial enterprises to search for energy saving technology. Energy saving and implementation of advanced energy-efficient ...

Margery Conner EE Times LED bulb prices are dropping. A year ago you could expect to pay $50 for a Philips dimmable 60W-replacement LED bulb, while today you can go to Best Buy and purchase its house brand 8W, 800 lumens Insignia 60W-replacement ...

J ames Patterson, National Semiconductor EDN There are more than 2 million installed TRIAC dimmers worldwide, and they can prove a challenge to the control circuitry of an LED light. With such a large base, backward compatibility is a must. The ...

Publitek Marketing Communications Digi-Key As rising energy prices take effect and legislation outlaws incandescent bulbs, homeowners are looking for more energy-efficient lighting that provides them with the quality of illumination and control ...

Laura Peters LEDs Magazine AC-LED assemblies often can produce light output levels and efficacies of DC-LED assemblies, while eliminating the AC-to-DC converter. But can they move beyond niche applications? The concept of an AC LED is an elegant ...

Margery Conner Almost two years ago I did my first LED teardown on a 7W LED bulb from Taiwanese manufacturer TESS. They sent me two bulbs, one in warm white and one cool. I tore down the cool white, and afterwards re-purposed it so that, minus its ...

Rich Rosen, National Semiconductor Introduction The exponential growth of LED lighting has ushered in a vast selection of integrated circuit devices to provide controlled power to LEDs. No longer acceptable to an energy-conscious world, ...

Rudi Hechfellner, Steve Landau Philips Lumileds Understanding and comparing LED performance appears straightforward: get the datasheets, compare numbers for light output, efficacy and lumen maintenance, and make a decision. Unfortunately, any ...

Richard Comerford Examining one category ambient-light sensing represented by one of last January’s Product of the Year award winners, demonstrates how quickly some technology fields can alter course. Right after the awards were chosen, ...