Scientists at the Jiao Tong University School of Medicine in Shanghai studied 123 children under 15 with leukemia and found those with a faulty variant of the XRCC1 gene were 4.3 times more likely to be diagnosed with the disease if they lived within 330 feet of a power line or electricity transformer and the electromagnetic fields that surround such facilities. The gene in … [Read more...]
Norwegian Firm Launches Purpose-Built EM Survey Vessel
Trondheim, Norway-based sea-logging firm Electromagnetic Geoservices ASA (EMGS) has launched the BOA Thalassa, a purpose-built vessel that employs EMGS’ proprietary technology to support oil and gas companies in their search for offshore hydrocarbons. Survey capabilities have been substantially increased by the vessel’s ability to handle a record number of receivers. The BOA … [Read more...]
The 5th IEEE Vehicle Power and Propulsion Conference (VPPC'09)
The conference is co-sponsored by IEEE Power Electronics Society (PELS) and IEEE Vehicular Technology Society (VTS). This year the conference will feature the theme of sustainability: hybrid, plug-in, fuel cell, and battery technology.http://www.ewh.ieee.org/conf/vppc/ … [Read more...]
EM Goes to the Dogs—and the Horses and Cats as Well
BioElectronics Corporation has announced that its HealFast™ line of pain-relieving and healing patches (based on a technique that uses an extra-low-frequency (ELF) pulsed electromagnetic technology) is now available for horses, as well as for dogs and cats. In fact, BioElectronics Corporation, which also produces pain patches for human use, will be displaying its HealFast™ … [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...]
Reducing Ground Noise Emissions in Critical Electronic Equipment and Facility Ground Systems to Help Prevent Conducted EMI Problems
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...]
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...]
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...]
Optimal Techniques for Minimizing IR-Drop and Supply Bounce
Any multi-supply pinned microcontroller can be improved simply by altering the pin allocation Mart Coenen and Dick de Greef Phillips Applied Technologies Eindhoven, the Netherlands On-chip ir drop, ground bounce, and supply bounce are key parameters that may have a serious impact on both the functional reliability and the EMC of integrated circuits (IC). This paper presents a … [Read more...]
Capacitor Termination Can Enhance Reliability
Using a polymer termination for multilayer capacitors forestalls damage during PCB assembly Matthew Ellis For safety critical applications such as aerospace and military, failure caused by a short circuited capacitor could be disastrous. One of the most reliable components for surface mount communications is the multilayer ceramic capacitor, in which a block of ceramic … [Read more...]
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