Plug-in LEDs

May 24, 2007
What is said to be the world's first LED that runs directly from ac power comes from Seoul Semiconductor Co. Ltd. in Korea.

The company's Acriche LEDs provide warm-white light suitable for indoor lighting. A luminous efficiency of 42 lumens/W is 20% more efficient than conventional warm-white dc LEDs. Actual system efficiency — corrected for luminous efficacy, ballast efficiency, and luminaire efficiency — is 39.9 lumens/W. By comparison, actual system efficiency for incandescent lamps is 7.5 lumens/W, and 30.6 lumens/W for compact fluorescents.

The so-called color-rendering index (CRI) is a measure of a light source's ability to produce vibrant colors on objects receiving the light. A CRI rating of 100 is equivalent to daylight, while a CRI near zero suggests colors appear unnatural under that particular light source. Acriche warm-white LEDs have a CRI of 90. The LEDs last 35,000 hr compared to 1,000, 3,500, and 8,000 hr for incandescent, halogen, and fluorescent lamps, respectively.

MAKE CONTACT
Seoul Semiconductor Co. Ltd.,
www.acriche.com

Sponsored Recommendations

Drive systems for urban air mobility

March 18, 2025
The shift of some of our transport traffic from the road to the air through urban air mobility is one of the most exciting future fields in the aerospace industry.

Blazing the trail for flying robots

March 18, 2025
Eight Bachelor students built a flying manipulator that can hover in any orientation and grasp objects. The drone is even more maneuverable than a quadrocopter and was designed...

Reachy 2: The Open-Source Humanoid Robot Redefining Human-Machine Interaction

March 18, 2025
Reachy 2 was designed to adapt to a wide variety of uses thanks to its modular architecture.

maxon IDX: The plug-and-play solution

March 18, 2025
IDX drives combine power with small space requirements - a brushless BLDC motor combined with an EPOS4 positioning controller and a gearhead inside a high-quality industrial housing...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!