Articles

Ensuring Safe Operation and Accurate Characterization of Laser Diodes

Laser diodes are very sensitive to electrostatic discharge (ESD), current/ voltage transients, and temperature changes, and extra care must be taken to ensure the laser diode is protected during all operating conditions. Unlike general-purpose power supplies or current supplies, laser diode drivers, mounts, and cables greatly improve the protection of laser diodes and allow low noise operation. A temperature controller helps stabilize the temperature of the laser diode packages, which provides for safe operation and wavelength stability of the laser. For fast and reliable characterization, an optical power meter and integrating sphere-based photodiode detectors are often employed where a good understanding of optical measurements is required.

Posted in: Articles, Features, Photonics, Lasers, Optics, Thermal management, Mountings
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Think Outside the Chip: MEMS-Based Systems Solutions

MEMS is an acronym for Microelectro mechanical Systems; however, most MEMS implementations to date have not been systems at all, but rather devices. This article reports the constituents and some applications of what is defined as MEMS-based systems solutions, or MBSS. In Europe, this concept is commonly referred to as ”Smart Systems In tegration.” These MBSS use front-end MEMS devices — either one or a combination of many sensors, actuators, and/or structures — that work in conjunction with several other devices including signal conditioning commonly using application specific integrated circuits (ASICs), digital signal processing (DSP) with embedded microcontrollers and software, energy creation and storage, and networking communications functions.

Posted in: Articles, MEMs, Microelectromechanical devices, Sensors and actuators
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LED Binning Using a Single Pulse Tester

LEDs are considered to be the light technology of the future due to their low energy consumption and long lifetime compared to traditional light sources. As LED luminous intensity levels increase, the range of applications for LEDs expands as well.

Posted in: Articles, Lighting, Materials & Packaging, Test & Inspection
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How Substrate Materials Affect LED Reliability

The solid-state lighting industry continues to develop LEDs with higher lumens per watt, in alignment with Haitz Law, which states that the cost per lumen falls by a factor of 10 every decade and the amount of light generated per LED increases by a factor of 20. These advancements are driving the need for packaging and thermal substrate technologies that deliver better thermal management, are more reliable, and are cost-efficient.

Posted in: Articles, Lighting, Materials & Packaging, Test & Inspection
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Brighter, More Efficient LED-Based Lighting

Code 3’s TriCore is an LED-based optical lighting technology that is 2X brighter than other technology currently on the market using only 1/3 the power of conventional lighting systems, yielding higher watt-for-watt efficiency. The brightness and efficiency are achieved through a unique design that combines an LED chip with an optical-based lens system. The LED chip (die) system overcomes all limitations imposed by pre-packaged LEDs. Moreover, the optical-based lens system removes the inefficiencies within reflective-based lighting technology. These two technological advances competitively separate Tri- Core from any other lighting technology on the market today.

Posted in: Articles, Lighting
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Method of Simultaneously Refreshing all Pixels In a Display

Matrix-addressed displays, which include LCDs, LEDs, and almost every kind of display except the CRT, are currently refreshed one row or one column at a time. This is required for all digitally controlled displays and causes bandwidth limitations due to the high resolutions present in today’s displays. This bandwidth limitation is usually compensated for by using a faster processor, usually at increased expense and power consumption in the display.

Posted in: Articles, Lighting
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Organic Photovoltaics - Forecasts for the Next Decade

Today there are multiple devices available for harnessing solar energy. Each device offers a different set of characteristics. Wafer-based devices consist of mono or polycrystalline and are the most mature technology due to the experience borrowed from the microelectronics industry.

Posted in: Features, Articles, Electronics & Computers, Energy Efficiency, Energy Harvesting, Renewable Energy, Solar Power, Automotive
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VPX: The State of the Ecosystem

You can never have too much bandwidth. High-speed processing and growing amounts of data to be communicated require generous bandwidth from the board level to the I/O. VPX, with a backplane connector system supporting 6.25 Gb/s in a switched fabric architecture, is the latest generation of VMEbus and offers new levels of performance for embedded computer systems. VPX systems are designed for flexible application of demanding highspeed protocols, such as 10G Ethernet, RapidIO, InfiniBand, and Hyper Transport protocols, in ground, aerospace, and marine applications.

Posted in: Articles, Articles, Electronics & Computers
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Thin Cavity Cooling of Electronic Circuitry

Anovel tested technology for cooling electronic circuitry is also useful in many other industries. The method is called “Thin Cavity Fluidic Heat Exchanger”(TCFHE). Technology details can be viewed at the U.S. Patent and Trademark Web site, at application 20100078155.

Posted in: Articles, Articles, Electronics & Computers
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Embedded Video Requirements Drive New Mezzanine Card Format

Sophisticated graphics have hit the embedded systems world and are increasingly demanded by military, aerospace, industrial, and medical applications. The problem, of course, is that graphics are challenging even in the desktop world. In embedded designs, they present unique issues that include very specific, non-standard functionality.

Posted in: Articles, Articles, Electronics & Computers
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