Lighting

Based LEDs

Visual Communications Company (VCC) (Poway, CA) has introduced based LEDs designed to serve as drop-in replacements for outmoded T1-3/4 and T3-1/4 incandescent lamps. Available in a range of base designs, including wedge, bayonet, midget flange, and midget groove, the LEDs feature average lifespans of 100,000 hours.

Posted in: Products, Lighting, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Reliability, Reliability
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Ballast Control ICs

International Rectifier (El Segundo, CA) has introduced a control IC for magnetic ballasts used in fluorescent lamps. Available in a compact SO8 package, the IRS2538DS integrates a 600V half-bridge control circuit, bootstrap MOSFET, and protection features. The IRS2538DS also includes pre-heat, ignition, and running lamp modes; closed-loop lamp current control; fixed preheat time (2s typical); adaptive deadtime (0.5us to 1.5us typical); lamp insert auto-restart; micropower start-up (125uA); and an internal 15.6V Zener diode clamp on Vcc.

Posted in: Products, Lighting, Exterior lighting, Electronic control units, Integrated circuits, Electronic control units, Integrated circuits, Interior lighting, Interior lighting
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Chip-on-Board (COB) LEDs

Everlight Electronics Co. Ltd. (Taipei, Taiwan) has expanded its high performance JU series of chip-on-board (COB) LEDs to include 7, 10 and 15 W types in addition to the existing 4W version. The JU series now consists of four JU1215 (15×12×1.6mm) and one JU2024 (20×24×1.6mm) type/s with powers ranging from 4 watts to 15 watts. All types provide an efficacy of 110lm/W or more at 3000K CCT, a CRI of >80Ra and 25° C substrate temperature, and are available in versions ranging from ANSI bin 2,700 K to 6,500 K.

Posted in: Products, Lighting, Integrated circuits, Light emitting diodes (LEDs), Integrated circuits, Light emitting diodes (LEDs)
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LED Drivers

SL Power Electronics (Ventura, CA) has introduced its new LE Series of LED drivers. Available in 10 models from 75 to 300 watts, the constant current LED drivers enable highly efficient LED lighting for applications that require more than eight hours per day of operating life. Featuring a wide input voltage range of 90 to 305 VAC, up to 95 percent efficiency and the ability to survive lightning strikes, the LE-Series have UL 8750 and EN61347 safety approvals with an IP67 rating and are housed in a waterproof metal case in order to withstand hot and cold temperatures in outside installations.

Posted in: Products, Lighting, Light emitting diodes (LEDs), Power electronics, Light emitting diodes (LEDs), Power electronics, Product development, Reliability, Reliability, Lightning protection
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Aluminum Body LED Work Light

The EPL-FL1524-LED-120X12- C1D2-50 hazardous area LED work light from Larson Electronics (Kemp, TX) provides operators with a far more durable and reliable high performance alternative to standard incandescent and fluorescent work lights. This LED drop light is designed similarly to a standard fluorescent drop light, but offers greatly improved performance and durability through the inclusion of a 15 watt LED tube lamp instead of the usual fragile fluorescent tube. This light produces more light output than a standard 100 watt incandescent drop light, has no glass to shatter or break, has no filament, and runs only slightly warm to the touch. This light produces 1,450 lumens of clean white light output from only 15 watts of power consumption.

Posted in: Products, Lighting, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Interior lighting, Interior lighting, Durability, Durability
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Big Ideas for Small Spaces

Over 24 hours from April 4 to 5, six top French design studios conceived and presented new product concepts for urban environments during the Small Spaces Design Hackathon, presented by Cut&Paste in partnership with Hewlett-Packard. In dense city neighborhoods, homes are small and office space is at a premium, so urban dwellers must be more creative in how they use their space. The design concepts were presented at Cyclone Le Studio as part of ZED, HP’s creative popup space.

Posted in: News, Electronics & Computers, PCs/Portable Computers, Power Management, Energy, Displays/Monitors/HMIs, Imaging, Lighting, Computer-Aided Design (CAD), Computer-Aided Engineering (CAE), Computer-Aided Manufacturing (CAM), Software, Monitoring, Test & Measurement
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Transient Electronics Dissolve When Triggered

An Iowa State research team led by Reza Montazami is developing "transient materials" and "transient electronics" that can quickly and completely melt away when a trigger is activated. The development could mean that one day you might be able to send out a signal to destroy a lost credit card.

To demonstrate that potential, Montazami played a video showing a blue light-emitting diode mounted on a clear polymer composite base with the electrical leads embedded inside. After a drop of water, the base and wiring began to melt away.

As the technology develops, Montazami sees more and more potential for the commercial application of transient materials. A medical device, once its job is done, could harmlessly melt away inside a person’s body. A military device could collect and send its data and then disappear, leaving no trace of an intelligence mission. An environmental sensor could collect climate information, then wash away in the rain.

Source

Also: Read other Electronics & Computers tech briefs.

Posted in: News, Defense, Electronic Components, Electronics, Electronics & Computers, Environmental Monitoring, Green Design & Manufacturing, LEDs, Lighting, Composites, Materials, Plastics, Medical, Semiconductors & ICs
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New Approach To Growing InGaN Crystals For Diodes Could Also Improve Solar Cell Efficiency

Metal-modulated epitaxy allows an atomic, layer-by-layer growth of the material.

Crystals form the basis for the penetrating icy blue glare of car headlights and now they could be fundamental to the future in solar energy technology? Crystals are at the heart of diodes. Not the kind you might find in quartz, formed naturally, but manufactured to form alloys, such as indium gallium nitride or InGaN. This alloy forms the light emitting region of LEDs, for illumination in the visible range, and of laser diodes (LDs), in the blue-UV range.

Posted in: Briefs, Lighting, Solar energy, Alloys, Refractory materials
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New Plastic-Like Polymer Could Lead To White Organic LEDs

Inserting platinum metal atoms into a chain-like organic polymer enabled tuning of the colors emitted.

By inserting platinum atoms into an organic semiconductor, University of Utah physicists were able to “tune” the plastic-like polymer to emit light of different colors – a step toward more efficient, less expensive and truly white organic LEDs for light bulbs of the future.

Posted in: Briefs, Lighting, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Polymers, Semiconductors
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LED Panels Illuminate Stained Glass Window

The newly-renovated Church of the Covenant in Cleveland, Ohio, has a large, ornate rose stained-glass window that faces the Seidman Cancer Center at the University Hospitals Case Medical Center across Euclid Avenue. In a joint partnership project between the church and hospital entitled, “Hands Across the Healthway,” the neighbors wanted to find a way to illuminate the stained glass window so that recovering patients can view the illumination.

Posted in: Application Briefs, Lighting, Exterior lighting, Interior lighting, Interior lighting, Glass
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