Lighting

High Performance Thermal Management Solutions for LEDs

When it comes to highpower lighting applications in the military and harsh industrial environments, reliability and efficiency are key features to consider. To maximize both of these qualities, lightemitting diode (LED) technology is coming into play with brighter, more flexible lighting solutions. LEDs are longer-lasting, appear brighter and are more versatile and more durable than incandescent and compact fluorescent lighting (CFL).

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40W Waterproof LED Drivers

Phihong USA (Fremont, CA) recently introduced a new series of waterproof LED drivers for use in a broad range of residential and commercial applications. Designated the PDA040 series, the LED power supplies are available in constant-current outputs of 700, 1050 and 1400mA at a nominal input voltage rating of 120-277 VAC. The PDA040 series is Class 2 per UL1310 and also complies with UL8750 and UL60950. Standard features on the drivers include over-voltage protection, over-current protection, short-circuit protection, brownout and brownout recovery. Additionally, the power supplies have power factor correction greater than 0.9 and a total harmonic distortion of less than 20%.

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LED Drivers

Dialog Semiconductor plc (Kirchheim/Teck, Germany) has announced a new solid state lighting (SSL) LED driver that integrates boost and flyback converters into a single IC. The iW3623 offers a universal 100 VAC to 277 VAC input range and output power up to 45W. Dialog’s patented Flickerless™ design achieves a near-zero 100 to 120Hz output ripple and built-in over-temperature protection (OTP).

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LED Direct Replacement Bulb

The Verde Series LED GU24 direct replacement lamp by American Illumination (Los Angeles, CA) is one of the few GU24 direct replacement light bulbs available, and is the only one compatible with the GU24 locking ring for simple transitions from CFL to LED. The Verde GU24 bulb replaces the 13W CFL, consuming only 8.5W of total power and emitting over 700 lumens (warm white) for an 80+ lumens per watt efficacy.

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New Family of Tiny Crystals Glow Bright in LED Lights

ORNL scientist probes atomic structure to improve material’s luminescence efficiency Minuscule crystals that glow different colors may be the missing ingredient for white LED lighting that illuminates homes and offices as effectively as natural sunlight.

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Fine-Tuning Emissions From Quantum Dots

New analysis should enable development of improved color displays and biomedical monitoring systems. Tiny particles of matter called quantum dots, which emit light with exceptionally pure and bright colors, have found a prominent role as biological markers. In addition, they are realizing their potential in computer and television screens, and have promise in solid-state lighting. New research at MIT could now make these quantum dots even more efficient at delivering precisely tuned colors of light.

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Silicon-Based Nanoparticles Could Make LEDs Cheaper, Greener To Produce

Light-emitting diodes, are the most efficient and environmentally friendly light bulbs on the market. But they come at a higher up-front price than other bulbs, especially the ones with warmer and more appealing hues. But researchers at the University of Washington have created a material they say would make LED bulbs cheaper and greener to manufacture, driving down the price. Their silicon-based nanoparticles soften the blue light emitted by LEDs, creating white light that more closely resembles sunlight.

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