That’s about 267mph by my reckoning! And this takes place every day, as many of you may already have guessed, on the Shanghai Maglev (Magnetic Levitation) Train. Over the last five years, I have tried several times to try this wonder of modern science, only to be thwarted by mechanical failures on their part, or bad timing on my part. Well, last Friday, when leaving the 2008 … [Read more...]
Improving the Way We Measure Insertion Loss
A proposed set of new test methods may provide more accurate attenuation data Kermit O. Phipps, Philip F. Keebler, Bradford R. Connatser Many commercial and industrial electrical environments contain equipment that is sensitive to radio-frequency (RF) interference. Theft detectors, digital sensors, and medical-telemetry systems have all been known to malfunction in the … [Read more...]
Performing GR-1089-Core Lightning and Power Cross Test
A review of the test methodologies and equipment required to perform GR-1089-CORE lightning and power cross testing James Press, Jennifer Lawrence, Mark Betts, John Ngo ABSTRACT The pitfalls and difficulties in performing testing in accordance with GR-1089-CORE, Section 4 are discussed. A brief description of the GR-1089-CORE document is presented to familiarize the reader … [Read more...]
Chinese Safety and EMC Laboratories Receive International Accreditations
The Chinese power supply company, Huntkey Enterprise Group, has announced that its safety laboratory and EMC laboratory have received accreditation certified by UL, TUV and NEMKO. Receiving these accreditations will tremendously shorten the accreditation cycle of product R&D and accelerate the public listing of Huntkey products, the company says.Visit Huntkey’s Web site to … [Read more...]
EMC in Space …
Successfully dealing with EMC in space systems requires strong EMC engineering Daryl Gerke, PE, and William Kimmel, PE Many of us in the EMC business came of age during the “space race” of the 1950s, 60s, and 70s. We well remember names like Sputnik, Mercury, Gemini, and of course, Apollo. Some of us in the EMC business have even been fortunate enough to spend some (or all) or … [Read more...]
Spiteful EMI Can Cost You
The Federal Communications Commission (FCC) has issued a monetary forfeiture order in the amount of $1,500 to Dale Lloyd Allred of Tunnel Hill, GA. Allred was fined for willful and repeated violations of Sections 301 and 333 of the Communications Act of 1934 as amended. Earlier this year, the FCC’s Atlanta office received complaints about interference to school bus radios … [Read more...]
Headphones May Interfere With Implantable Defibrillators & Pacemakers
In a study reported at the American Heart Association’s Scientific Sessions 2008 held in New Orleans, LA., researchers from the Medical Device Safety Institute at Beth Israel Deaconess Medical Center (BIDMC) in Boston, MA investigated the effects of MP3 player headphones, most of which contain the magnetic substance neodymium, on the operation of implanted cardiac devices. The … [Read more...]
Swiss Study Focuses on Alzheimer’s Risk and Exposure to EM Fields
Doctors at the Institute for Social and Preventive Medicine at the University of Berne used census and mortality data from 4.7 million Swiss residents to investigate all deaths taking place there between 2000 and 2005. Using a proportional hazard model, they found that people who lived within 50 meters of high-voltage electricity lines were more likely to die from Alzheimer’s … [Read more...]
Productive Vietnam-U.S. Energy Efficiency Conference Wraps Up
Our colleagues at American TCB, whose Mike Violette has shared his travel experiences with eNews readers in several previous editions, have forwarded word of successful sessions held in Hanoi and Ho Chi Minh City. Organized by American TCB, Washington Labs, Ltd. and Rheintech Laboratories, this conference brought together a multi-national group to address the energy issues … [Read more...]
Vishay Launches Tender Offer for Outstanding Shares of International Rectifier
Component manufacturer Vishay Intertechnology has announced that a wholly-owned subsidiary has commenced a tender offer to acquire all of the outstanding shares of common stock of International Rectifier Corporation for $23 per share in cash. Vishay was not successful in persuading the Board of International Rectifier to agree to the business combination that Vishay … [Read more...]
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