LED light manufacturers are often claiming 50,000 hours or more for lighting lifetime. Unfortunately many times those lifetime expectations are not met. Usually the makers of those high those lifetime promises forget to include the lifetime and reliability of all components, and the real-world thermal conditions the LEDs are subjected too. Just a few years →
Design News reports and interesting LED lighting application. In Brussels, the Dexia Tower office building uses 151,200 LEDs to illuminate the entire building. Each window is illuminated by a row of 12 RGB LEDs along the bottom of the windowpane. A computer controls the whole display. Watch the Youtube video of the building LEDs in →
Chipshow’s LED tube page gives some views what LED tubes look like. As you can see there are many LEDs inside a LED tube. The most economical way to run sich LEDs from mains power is to connect many LEDs in series and then use some current limiting circuit to set the drive current right →
The idea if replacing fluorescent light bulbs with LEDs seems to become popular. There are different kind of products made for that purpose. LED bulbs utilizes large arrays of high power LEDs to provide up to provide light. They are at best an economical way to replace commonly used fluorescent tubes. Since introducing LED based →
So, if you have wondered why LED light bulbs are so expensive today, How LED Light Bulbs Are Made article gives explanation of how they are manufactured and how that compares to the manufacture of traditional light bulbs should help. However, it also reveals why the cost will fall pretty dramatically over the next few →
Can you have too many LEDs on one lighting system? Hard to say. For reference take a look at this video of Smack Nightclub’s amazing LED lightshow. This looks pretty awesome even on the video. This is definately not for those people with motion sickness or can feel sick near flashing lights. I am just →
LED car headlights are a promising technology. They have many advantages over filament bulbs (longer life, faster on/off times, lower power consumption) but the technology has still limitations. LEDs can be used as car headlight when the lighting system is specifically designed for LEDs. There are even some DIY projects for this. The current LED →
Are LED Fluorescent Tubes Ready for Prime Time? I got a mail on interesting survey is on LED vs Fluorescent Tubes at http://www.softwareadvice.com/articles/construction/are-led-fluorescent-tubes-ready-for-prime-time-1041920/. The survey concentrates specifically, if LED tubes are ready for widespread commercial use, and if they will replace fluorescent tubes. The writer of that blog is reaching out to a few bloggers →
TESS, a Taiwanese manufacturing company, recently introduced a 7W LED bulb that, at 560 lumens, can serve as a replacement for a typical 500-lumen, 40W incandescent bulb. Tear-down: inside a 7W LED light bulb article shows you what is inside that lamp. This LED lamp bulb holds seven 1W LED packages (a package of multiple →
For good macro photography you need to have good light. Getting nice light nicely to location near camera lens can be sometimes hard. Some photographers use special Macro Photo Studio. Some macro photographers use two flashes mounted on opposite sides of the lens. Some prefer to use ring lights. After some experimenting I thought that →