The French cosmetics firm Clarins has incurred the wrath of yet another consumer group. According to the Nevada based National Toxic Encephalopathy Foundation (NTEF), Expertise 3P Poly Pollution Protection (3P) products are touted as "the most advanced protection against every type of pollution known today...for the first time in cosmetology, it also protects against the … [Read more...]
Shielding
Leader Tech Completes Expanded Facility
Leader Tech, a well known name in EMI shielding, has opened its new Global EMI Technology Center in Tampa, FL. According to Leader Tech president Dario Negrini, "Every detail of our new one-of-a-kind facility has been engineered to streamline and improve our customer service, engineering, and manufacturing processes. The new expansion encompasses all facets of the business … [Read more...]
IEC Issues Draft of Amendment on ICs and Measurement of EM Emissions
IEC 61967-6 am1 Ed. 1.0 is entitled "Integrated Circuits - Measurement of Electromagnetic Emissions, 150 kHz to 1 GHz - Part 6: Measurement of conducted emissions - Magnetic probe method." The Final Draft International Standard has the following voting period: 2007-11-30 to 2008-02-01. Purchasers of this draft version will receive the definitive version once it … [Read more...]
Investigators Rule Out EMI in Investigation of Boeing Crash Landing at Heathrow
Since the crash landing of a Boeing 777 returning from Beijing to London's Heathrow Airport on January 17, 2008, speculation and the rumor bill have looked for an explanation as to what caused a crash landing on a grassy area short of the runway after a seemingly normal flight. One persistent version blamed electromagnetic interference from the many WiFi systems in densely … [Read more...]
Moderately Soft EMI Gasketing Approved for Spaceflight and Military Applications
The GORE-SHIELD® GS2100 EMI gasket is a conductive, adhesive-backed EMI gasketing material that is moderately soft and is approved for spaceflight and military applications. This gasketing can be supplied in die-cut panel forms or in slit width rolls. Slit width material is particularly well suited to manual, "peel-and-stick" gasketing applications. GS2100 consists of a … [Read more...]
EMI Causes Washington, DC Metro Trains to Switch to Manual Operation of Doors
The Washington Metropolitan Area Transit Authority has announced that for the immediate future the opening of all doors on its trains will be controlled by train operators. On rare occasions, doors have opened on the wrong side of the car as the train comes to a stop at a station. This problem has occurred as Metro officials have been working to upgrade power substations and … [Read more...]
Spread Spectrum IC Reduces EMI in USB Applications
A USB 2.0 Peak EMI Reduction IC from PulseCore Semiconductor uses spread spectrum technology to achieve compliance in USB applications. The PCS3P73U00A is based on patent-pending technology and is said to simplify EMI reduction while reducing or eliminating the need for expensive metal shielding, ferrite beads, conductive paint, or filtering networks. Spread spectrum clocking … [Read more...]
Catalog Details Wide Line of Shielding Products
A new catalog from Tech-Etch details the company's EMI/RFI shielding product line, including all sizes, shapes, compositions, mounting options, and seal types. This 52-page catalog features to-scale technical drawings, compression values, and metal thicknesses for over 100 BeCu and stainless steel finger stock shielding profiles--including low gasket profiles; soft no-snag … [Read more...]
Solving the Galvanic Corrosion Issue in EMI Shielding
Tungsten carbide/aluminum composite particles inhibit galvanic corrosion of aluminum. An on-going issue in the design of reliable EMC shielding is galvanic corrosion of aluminum. How can an aluminum frame be protected from galvanic corrosion if it contacts an EMI gasket containing non-aluminum particles? Chromate conversion coatings have long been used to reduce the corrosion … [Read more...]
On-site EMF Testing of an Emergency Network Communications Vehicle
Thorough testing requires taking measurements both inside and outside the vehicle. David A. Case, Jaime McLain and Murry Gavin Cisco Systems, Inc., Richland, Ohio, USA Experienced compliance test personnel are familiar with the usual spate of RF issues. Tasks range from performing MPE (maximum permissible exposure) studies and SAR (specific absorption rate) testing to … [Read more...]
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