LEDs

Nobel Prize In Physics goes to Blue LED

2014 Nobel Prize In Physics Awarded To the Inventors of the Blue LED posting says that the 2014 Nobel Prize in Physics has been awarded to Isamu Akasaki, Hiroshi Amano and Shuji Nakamura, the inventors of the blue LED. When Isamu Akasaki, Hiroshi Amano and Shuji Nakamura produced bright blue light beams from their semi-conductors

Test: LED Replaces Halogen

I needed to replace few burned 50W GU10 halogen bulbs with LEDs. A standard 50W halogen lamp outputs 400 lumens so I needed to find a reasonably LED bulb that gives around the same light output. I could live with slightly less, but not too much less. I found suitable looking product AIRAM LED 4W

LED vs Halogen

I had to replace some 50W GU10 halogen bulbs. I though it could be time to check if it would be reasonable to go to use LED bulbs. I did a year or so similar checking, and at this time it did not feel reasonable because reasonably prices LED bulbs gave considerably less lights out

How LEDs are Made

Sparkfun has pretty interesting to look at article How LEDs are Made. How LEDs are Made factory tour article shows how LED supplier YunSun (Shenzhen China) makes LEDs. YunSun buys their LED dies from Taiwanese company (thin sheets contains thousands of LED dies). LED wire bonding machine attaches a hair-thin gold wire from the top

High-power LEDs don’t generate IR? True or false?

I just read an interesting article True or false? High-power LEDs don’t generate IR heat in the forward direction like a filament lamp that give something to think about on LED technology. I and you have for sure read that a high power LED emits no UV or IR and that any heat is created

Do LEDs cause blindness?

Do LEDs cause blindness? article tells that According to a study led by Dr. Celia Sánchez-Ramos, of Complutense University in Madrid, prolonged and continuous exposure to LED light might be sufficient to damage the retina. Her study, published in the journal Photochemistry and Photobiology in 2012 found that LED radiation caused significant damage to human

Dimming LED sources

I just happened to find an interesting presentation on light dimming technologies and who they work with LED lighting. Dimming LED sources: what’s working and what still needs fixing is a worth to take a look if you are into LED lighting or light controlling applications. It is a very good overview of the current