Many EMI problems involve emissions that circulate through electrical conductors within a facility and within equipment Philip F. Keebler and Kermit O. Phipps EPRI Knoxville, Tennessee Background The electromagnetic environment includes the areas inside and outside electrical and electronic equipment. The areas inside equipment include unused air spaces, circuit boards, cables … [Read more...]
Different Methods of Connecting an SPD to an Electrical Distribution Network
The way in which SPDs are connected can have a large impact on the overall protection provided Bryan Cole Introduction Surge protective devices (spds) or transient voltage surge suppressors (TVSS) are used to reduce the impact of overvoltage transients on the electrical distribution networks found in various industries. Of course, the efficacy of these devices will affect the … [Read more...]
Semi-Anechoic Chamber Expedites Avionic EMC Testing
A semi-anechoic chamber has been completed by ETS-Lindgren at Airbus in Hamburg, Germany. Valued at over €500,000, the chamber measures 12 x 6.7 x 6.5 meters and features an 8- x 4- x 2.9-meter control room. The chamber is to be used primarily for the EMC testing of electrical and electronic components and systems in aircraft. The new indoor, in-house test environment ensures … [Read more...]
Will EM, Electrostatic, Thermal, or Osmotic Forces Propel Tiny Robots?
Scientists at the Micro/Nanophysics Research Laboratory at Australia’s Monash University have developed tiny nano-bots capable of moving through the human blood stream. According to research team leader Prof. James Friend, “ Serious damage during minimally invasive surgery is, however, not always avoidable, and surgeons are often limited by the width of a catheter tube, for … [Read more...]
IEEE EMC Society Awards Solicited
The success of the IEEE EMC Society is the direct result of the many volunteers who contribute so much of their time and energy. The annual process of selecting recipients of awards to be presented at the 2009 EMC Symposium is now underway. These annual honors are given in recognition of those who have made significant contributions to the Society and/or to the EMC profession. … [Read more...]
Omni-Directional Antennas Target Broadband Spectrum Monitoring
Models 3180, 3181, and 3182 from ETS-Lindgren are a series of omni-directional, biconical antennas for monitoring broadband spectrum. In addition to receiving signals from every direction around the antenna axis, Models 3180 and 3182 feature optimized elements that forestall any splitting of the main radiation beam in the elevation cut. Models 3180 and 3182 cover the … [Read more...]
Two Sad Losses for IEEE EMC Society Community
IEEE EMC society members are rightfully proud of the many accomplishments of their fellow members. Still, it sometimes takes a moment of sobering reflection to remember the contributions of others who have lent so much to members’ accomplishments. Spouses, children, friends, and colleagues, very accomplished persons in their own right, have made invaluable, if incalculable … [Read more...]
Rise Time vs. Bandwidth and Applications
A simple, practical mathematical model allows one to relate signal rise-time to the available bandwidth of a measurement instrument. Mekonen Buzuayene, Anritsu Corporation, Morgan Hills, Calif., USA In measurement instruments such as oscilloscopes and spectrum analyzers, the maximum rise time (tr) that can be measured with reasonable amplitude accuracy is directly related … [Read more...]
Gore Scores Prize as One of the Nation’s Best
Well-known for their EMI shielding and other products for the electronics sector, W.L. Gore has announced that it has earned a position on FORTUNE magazine’s annual list of the “100 Best Companies to Work For” for the 12th consecutive year. Gore is ranked No. 15. The full list and related stories appear in the February 2 issue of FORTUNE; it is available now on newsstands … [Read more...]
Teleporting Arrives
It’s not quite as wondrous as Scotty’s beaming the crew back to the Starship Enterprise, but a team from the Joint Quantum Institute (JQI) at the University of Maryland and the University of Michigan has succeeded in teleporting a quantum state directly from one atom to another over a substantial distance. Such a capability is necessary for workable quantum information systems … [Read more...]
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