Using AC LEDs can help simplify designs by eliminating the need for additional components and size while and increasing efficiency, lifetime, and reliability.
AC LEDs are gaining popularity because they allow designers to eliminate drivers that are commonly used in conventional devices.
The impact on the junction temperature of commercial LED products is directly affected by an LED’s internal thermal resistance which is defined in this article.
The new generation of COB LED arrays is described and their advantages explained for designing compact, sleek directional lighting for retail applications.
Discuss how LEDs have overtaken conventional lighting, shrinking lighing price gaps, and the recent shift towards light quality and "color tuning."
Performance of today’s LEDs and the hurdles that will need to be cleared before the U.S. Department of Energy’s target LED lighting efficacies are satisfied.
Advantages and drawbacks of higher drive currents for LEDs including the effect on reliability, efficacy, luminosity, chromaticity, design complexity and cost.
An overview of developments for current and future LED performance standards in the United States.
A look at the key optical parameters related to lighting such as color, chromaticity, optical power, dispersion, solid angle, and more.
A look at mid-power LEDs based on ceramic substrates from suppliers including Philips Lumileds, Seoul Semiconductor, and Cree.
An AC LED is a solid-state light source that operates directly from of an AC line voltage. A typical arrangement is two strings of multiple LEDs arranged in opposite polarity with a bias resistor to limit input current.
LEDs are a rapidly maturing technology that is making big inroads into the conventional lighting market.
White LEDs and the result of temperature changes including chromaticity changes along with the change in commercial chips.
Discover how replacing MR16 fixtures with Lumex LEDs increases performance, fixture lifetime, and long-term cost efficiency.
In theory, making high- brightness LEDs is easy. Just glue together n- and p-type semiconductors, add a small bias voltage, and stand back while the photons stream out.
High-efficiency LEDs are impressive devices. Many leading semiconductors companies sell proven, commercial devices with efficacies in excess of 100 lm/W and lifetimes exceeding 50,000 hours.
LED lighting suppliers are quick to claim that their products are more environmentally friendly than alternative technologies.
Replacing directional incandescent or halogen lamps with LED luminaires promises energy cost savings and longer-lasting lights.
Gradual fading, which is the cause of failure for most LEDs, is primarily due to microcracks in the semiconductor die. These defects are introduced during the complex wafer manufacturing process.
High-brightness LEDs tend not to burn out rapidly. Rather, they slowly fade away.