46 results found for EEPN In Electronic Design, displaying items 1 - 20
December 11, 2008 Capacitive Sensors Squeeze Versatile Touch Into Tight Quarters
Probably the greatest demand for highly featureridden touchscreens comes from the portable market, with the iPhone and similar communications products as ripe examples. But while it’s one thing to integrate a simple touchscreen accepting single-touch input to control the basic functions of a device, simple touchscreens are few and far between these days. Give or take a few millimeters, the typical area for input on a cell phone is about the size of a credit...
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Mat Dirjish
December 11, 2008 USE GDTs For Surge Protection In Broadband Digital Comm
Gas discharge tubes (GDTs) have evolved to a level of providing very reliable and effective surge protection in telecommunications systems and equipment, safeguarding against lightning and power-fault conditions. Due to their robust nature and superior electrical characteristics, GDTs have already become the preferred replacement for carbon blocks in traditional telephone-service applications. Because of their ultra-low capacitance plus low insertion and ...
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Tim Ardley
November 17, 2008 Hairy Gecko Peds Hold Key To Powerful Dry Adhesives
Imagine a dry compound that can conductively bind components to a printed-circuit board without the high heat associated with various soldering processes. Or, how about an adhesive that never dries out in a vacuum—a common problem in aerospace applications? For the adventurous, imagine wearing a suit that would allow you to easily scale walls and hang from ceilings like a superhero. These fantasies may not be too far from reality as scientists look to the...
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Mat Dirjish
November 17, 2008 Select The Right Circuit Protection For Switch-Mode Power Supplies
Switch-mode power supplies (SMPS) continue to replace linear-regulator types in a host of applications. As the need for more efficient electronics accelerates and as a result of their size, weight, and energy-saving advantages, SMPS are being widely used in applications such as LCD TV monitors, PC/ laptop displays, portable electronics chargers, printers, DVD recorders, and even automotive electronics and industrial. Yet because these new SMPS lack the...
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Stephen J. Whitney
October 23, 2008 Fasteners Take 30° Turn To Secure Cabinets And Contents
It’s generally seen as the least glamorous part of the design cycle. Developers of heavyduty data-center, industrial, commercial, and other critical equipment that resides in large cabinets and enclosures face the challenge of ensuring that these enclosures and their contents stay in place and in one piece under adverse conditions. Often having to work with soft materials such as copper, zinc, and plastics, the possibilities abound for screws stripping...
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Mat Dirjish
October 23, 2008 Unique Cabinet Solutions Fortify Small To Medium-Size Data Centers
The control of data communications for smaller entities and businesses continues to shift further away from external management to internal efforts. From hospitals and medical centers to schools and universities, from hotels and restaurants to banks and credit unions, and from law enforcement agencies to local municipalities, the movement toward in-house control of data flow is on the rise. There are several reasons for this shift, most of which tie back ...
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Richard Runnels
September 25, 2008 Researchers Open Windows Of Opportunity For Solar Power
Solar-power researchers at the Massachusetts Institute of Technology (MIT) have been very busy in their labs lately, and not without significant fruits for their labors. Two projects promise to elevate solar power from an expensive and cumbersome alternative to an affordable and unlimited energy source. SOLAR POWER GOES GREEN-LITERALLY! Relying on the process of photosynthesis occurring in plants for inspiration, MIT...
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Mat Dirjish
September 25, 2008 Achieve Higher Backplane Density
Equipment designers, particularly those involved with communications and high-end data, face the constant challenges of increasing data rates and greater packaging densities. In turn, these requirements are driving development needs for compact, high-speed components, including connectors. DESIGN CHALLENGES High-speed computing and networking system designers have the benefit of choosing from cost-effective, high-speed ...
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John Burkett
, et al.
September 25, 2008 Press-Fit Connectors Realize Breakthrough Performance
Thereâ??s good news for high-density applications. The latest compliant-pin connectors demonstrate BGA-class (ball-grid array) electrical performance with excellent mechanical design attributes. Recent advances in compliant-pin connector technology have led to a dramatic reduction in printed-circuit board (PCB) through-hole diameter requirements compared to previous press-fit designs. Next-generation devices retain the traditional assembly and operational...
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James Fedder
, et al.
September 25, 2008 Sensors Work To Reduce Auto Emissions
Today, reducing carbon-dioxide (CO2) emissions is one of the hottest automotive topics. The European Commission recently announced its roadmap for safer and greener cars by 2012. The strong shift in buying patterns also confirms that consumers want the most fuel-efficient vehicles that meet their personal and professional needs. Using advances such as hybrid technology, car manufacturers are working to introduce new models that reduce CO2 emissions. Other...
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Dieter Verstreken
August 28, 2008 Create Stable, Reliable, And Efficient Tantalum Capacitors
Ceramic capacitors are rapidly increasing in capacitance and volumetric efficiency (CV/cc) due to higher dielectric constants and smaller dielectric thickness as well as higher layer counts. To compete with ceramic capacitors and meet demands for miniaturization, tantalum (Ta) capacitors also need to increase their volumetric efficiency. Traditionally, the only way to increase CV/cc in Ta capacitors was to reduce particle size in the Ta powder, thereby...
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Yuri Freeman
, et al.
August 28, 2008 Engineer Seeks Cure For Common Wall Warts
With the mass proliferation of mobile devices and various computer and homeentertainment peripherals, most of us suffer from a bad case of wall warts. Doug Palmer, a principal development engineer at the San Diego division of the California Institute for Telecommunications and Information Technology (Calit2), uses the phrase “wall warts” to describe the plethora of external power supplies that vie for position in his and our wall sockets and power strips...
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Mat Dirjish
August 28, 2008 White LEDs Clear Another Brightness Bar
Ceramic capacitors are rapidly increasing in capacitance and volumetric efficiency (CV/cc) due to higher dielectric constants and smaller dielectric thickness as well as higher layer counts. To compete with ceramic capacitors and meet demands for miniaturization, tantalum (Ta) capacitors also need to increase their volumetric efficiency. Traditionally, the only way to increase CV/cc in Ta capacitors was to reduce particle size in the Ta powder, thereby...
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Mat Dirjish
July 24, 2008 Early Warning Is In The Air For Effective Thermal Management
For today’s makers of high-reliability equipment, increased performance requirements have meant packing more and more hardware onto boards and stuffing higher-density boards into shrinking chassis. As a result, the power density (power dissipated per unit area) of electronic products, measured by the ability to dissipate heat, has skyrocketed, increasing by a factor of 20 to 50 in the last few decades. More and more, hot new products mean hotter chips and...
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Rajesh Nair
July 24, 2008 Projects And Partners Move OLEDs Closer To The Spotlight
Developments in organic light-emitting diode (OLED) technology are accelerating. Delivering its “final milestone,” the Organic LEDs for ICT and Lighting Applications (OLLA) organization has unveiled what it is calling Europe’s most efficient OLED lighting tile. Also on the other side of the Atlantic, Osram Opto Semiconductors is leading the charge to develop lower-cost volume production methods for OLEDs. The company is a principal player in a European...
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Mat Dirjish
June 24, 2008
BSI Technology Flips Digital Imaging Upside Down
The quest for superior digital images in evershrinking camera designs never ends. Now, CMOS-sensor specialist OmniVision Technologies has partnered with Taiwan Semiconductor Manufacturing Corp. (TSMC) to take a completely different approach to traditional CMOS image sensor technology. OmniVisionâ??s OmniBSI architecture consists of a novel sensor design that uses backside illumination (BSI) to improve image quality while shrinking pixel size down to 0.9 μm....
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Mat Dirjish
June 26, 2008 Optical Bonding And Surface Treatments Improve Displays
Why should you consider optical bonding for your portable design? Do you need anti-glare or anti-reflective enhancements in the product? Should you plan on a more powerful backlight for your thin-film-transistor (TFT) LCD display? Start by evaluating the ambient light levels your product is most likely to encounter. REFLECTION MANAGEMENT Everyone has experienced unwanted glare obscuring information they need to see on a...
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Terry Trover
May 22, 2008 Tiny Sensor Detects Dangerous Gases Quickly And Efficiently
Under the leadership of Akintunde Ibitayo Akinwande, professor of electrical engineering and computer science at the Massachusetts Institute of Technology (MIT), a team of engineers is developing a very small gas sensor that they predict will be able to detect very tiny amounts of hazardous gases faster than currently available gas sensors. It also will be able to detect toxic industrial chemicals and chemical-warfare agents. In addition to being...
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Mat Dirjish
May 22, 2008 Measuring Large Flows With Small Sensors Improves Accuracy
Flow sensors are critical components in a variety of medical applications, from monitoring the output of gas delivery systems to ensure accurate flow rates to monitoring a patient’s breathing. Ventilators, anesthesia delivery, oxygen concentrators, spirometers, insufflators, sleep apnea diagnostic and treatment equipment, pulmonary-function test equipment, and other critical devices all require flow measurement. Some of the flow-sensing technology available...
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Donna Sandfox
May 22, 2008 Design For Electromagnetic Compliance In Ethernet Systems
With many appliances transitioning to Internet Protocol (IP) networks, the Ethernet interface finds itself in these products for the first time. This makes electromagnetic compliance (EMC) a challenge. Ethernet’s unshielded twisted pair (UTP) data-transmission cable acts as an antenna. Common-mode noise that leaks to it will show up as conducted or radiated emissions, creating unique electromagnetic interference (EMI) issues. Another requirement is...
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Amit Gattani
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