Features

UV LEDs

QuasarBrite™ UV LEDs from Lumex, Palatine, IL, are available in 385nm, 405nm, and 415nm wavelengths at 4-6mW in through-hole format. A robust TO-46 package with a glass lens provides a lifespan of more than 50,000 hours. QuasarBrite UV LEDs provide a uniform beam pattern and do not use the hazardous mercury material found in CCFL technology. Lumex’s UV LEDs have up to 70% lower energy consumption than CCFLs. The UV LEDs are ideal for a wide range of applications, such as bacterial and superficial sterilization for medical device technologies; industrial control device technology related to leak and biohazard detection; forensic applications related to counterfeit detection; and ink fluorescing. www.lumex.com

Posted in: Products, Lighting
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High-Output Red LEDs

Opto Diode, Newbury Park, CA, offers the OD- 624L High-Output Red LED with a dominant emission wavelength at 624 nm (typical) and a narrow beam angle that is ideal for fluorescence in medical, scientific testing instruments, and forensic applications. The lighting device delivers total power output ranging from 80 mW (minimum) to 170 mW (typical). The high-output red LED comes in a hermetically sealed TO-5 can with three leads. Under absolute maximum ratings at 25°C, the continuous forward current is 500 mA, with reverse voltage of 10V. The lead soldering temperature is 260°C, making the LED easy and convenient to install into new and/or existing lighting systems. www.optodiode.com

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White LED Backlight Driver

Alpha & Omega Semiconductor, Sunnyvale, CA, has expanded its EZBoost™ family with a white LED backlight driver, the AOZ1950. The AOZ1950 provides backlighting solutions for portable devices using medium-sized LCD panels such as netbooks, media players, and navigation devices. The AOZ1950 is a high performance current-mode boost regulator that operates from an input voltage range of 2.7V to 5.5V. Its integrated AOS Trench MOSFET boost switch allows the device to generate a regulated output voltage as high as 55V with an input switch current of 750mA. www.aosmd.com

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Making Sense Out of SOUP (Software of Unknown Pedigree)

Software test tools have been traditionally designed with the expectation that the code has been (or is being) designed and developed following a best practice development process. Legacy code turns the ideal process on its head. Although such code is a valuable asset, it is likely to have been developed on an experimental, ad hoc basis by a series of “gurus” — experts who prided themselves on getting things done and in knowing the application itself, but not necessarily expert at complying with modern development thinking and bored with providing complete documentation. That doesn’t sit well with the requirements of standards such as DO-178B.

Posted in: Articles, Articles, Electronics & Computers
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Multicore Processing: A Technological Dead End?

The computing press is full of discussions about multicore systems, defined here as single-chip computers containing two or more processing cores each connected to a common shared memory (Figure 1).

These devices are being presented as the solution to the performance problems faced by embedded systems, but in fact, multicore may be more of a problem than a solution.

Posted in: Articles, Articles, Electronics & Computers, Design processes, Architecture, Computer software / hardware, Computer software and hardware, Architecture, Computer software / hardware, Computer software and hardware
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Understanding Virtex FPGAs

With each new generation of FPGA devices, Xilinx continues to push the performance envelope to match the ever-increasing requirements of target applications. The recent announcement of the Virtex-6 is no exception. More processing power, lower power consumption and updated interface features to match the latest technology I/O requirements are all part of the new devices. While it might be easy to assume that faster, bigger, more powerful is better, it’s important to understand how the latest FPGA innovations actually deliver this higher performance to best match the device to the specific requirements of the application.

Posted in: Articles, Articles, Electronics & Computers, Architecture, Integrated circuits, Architecture, Integrated circuits
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Advancing Automotive Design With Innovative Collaboration

The automotive industry has faced hardships in recent times, but it can and will survive by renewing itself through innovation. After enduring a $14.6 billion loss in 2008, Ford reported a $2.7 billion profit in 2009 and applied for a total of 119 patents for the 2010 Ford Fusion and Fusion Hybrid. Clearly, now more than ever, inventive thinking is key to any automaker’s success. In the process, automotive engineers have not gone it alone — collaborations with various scientific disciplines continue to inspire and reinvent the design of safer and more efficient vehicles.

Posted in: Articles, Automotive, Design processes, Collaboration and partnering, Product development
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Choosing the Right Touchscreen Display Technology for Your Control/Automation Process

From industrial panel PCs, to open-platform graphic operator interface terminals (OITs), to microOITs, to human-machine interfaces (HMIs), there are many choices of interactive display technologies for manufacturing and process control. It can be a challenge to decipher the right product for the right application — even for the more technically minded individual, let alone the business owner who simply wants his process automated. The best way to get a handle on these products is to categorize them and then describe each group.

Posted in: Articles, Automation, Human machine interface (HMI), Displays, Displays, Automation, Manufacturing equipment and machinery, Production
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Light Emitting Diodes — Choosing the Right LED for the Job

Understanding how LEDs work and what materials are used for ideal operation in various spectral ranges will aid in selecting the right color and ideal wavelengths for a variety of applications. This article will discuss the newest LED technology and products that are available for your application, the various colors of LEDs and their respective wavelengths, and the theory of LED operation. Our goal is to help you make a knowledgeable decision when choosing an LED device to meet your specifications.

Posted in: Articles, Lighting, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Technical reference, Technical review, Materials identification
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LED Spectra Pose New Design Challenges and Opportunities

We normally think of ‘white’ light as being comprised of all wavelengths in the visible spectrum, or at least of being comprised of red, green, and blue. However, white LEDs emit light only in the yellow and blue, and still appear to be white. How does this work?

Posted in: Articles, Lighting, Design processes, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Chemicals, Visibility
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