Recently France banned cell phone use in its primary schools based on the “cautionary principle” that the long-term health effects of being exposed to the EM fields from cell phones from childhood on is still an unknown. At present cell phone use is allowed on school grounds but not in classrooms. Under the new regulations, their use in primary schools is simply banned. French … [Read more...]
Medical Device Liability Bill
A cardiologist testifying before a House Energy and Commerce Subcommittee has testified in favor of passage of the Medical Devices Safety Act of 2009. Dr. William Maisel, of Beth Israel Deaconess Medical Center in Boston, who chairs a Food and Drug Administration (FDA) advisory panel, noted that 10 million patients have implanted devices and that it is apparent that additional … [Read more...]
Single Certificate Facilitates Access to European Marketplace
TÜV Rheinland® now offers the manufacturers a convenient way to show product compliance to both the Low Voltage Directive (LVD) and the GS Mark. Regarded as a passport to the European market and a symbol of free trade, the CE Marking demonstrates that a product meets the minimum consumer safety, health, and environmental requirements as outlined by the European Directive. The … [Read more...]
A Short History and Review of Shielded Cables
Effective Shielding prevents interference from entering or emanating from a cable. Don Dodge, Calmont Wire and cable, Inc., Santa Ana, California, USA HISTORY In the late 1800s, as the use of electricity was first being used for communications, interference reared its ugly head. The imperative for some form of mitigation became apparent. The first attempts involved wire … [Read more...]
RF Shielding Materials: An Update on Selection and Cost Consideration
RF gasket selection must be a well-informed decision in the design process. Gary Fenical, Laird Technologies, St. Louis, MD, USA Advances in electronic components continue to occur at a rapid pace, and this ongoing rush means more and more wireless devices, increasing power levels, and higher frequencies. While consumers demand more advanced products with increased features … [Read more...]
RF Emission Reduction Techniques for ARM-Based Microcontroller Applications
A system's immunity can be enhanced without causing any functional drawbacks. Mart Coenen, EMCMCC bv, Eindhoven, the Netherlands INTRODUCTION With today’s digital designs and the time frame available for design-in, electrical system engineers and PCB designers are more or less forced to follow the application concepts provided by embedded device manufacturers. The … [Read more...]
IEEE and NATO Standardisation Agency Sign Technical Co-Operation Agreement
PISCATAWAY, N.J. & BRUSSELS--(BUSINESS WIRE)--The IEEE Standards Association (IEEE-SA) and the NATO Standardisation Agency (NSA) have signed a Technical Co-operation Agreement (TCA) in order to share knowledge of each organization’s standards development activities and avoid duplication of technical standards whenever possible.Under the terms of the TCA, IEEE-SA and NSA … [Read more...]
Voltage Sag Testing for Industrial Equipment—and a New Power Quality Measurement Technology
An electrical product should be able to ride through any regular voltage sag. Andreas Eberhard, Power Standards Labs, Alameda, California, USA Immunity from voltage sags is vital for reliable operation of our ever-more-sophisticated electronic controls and equipment. Every electrical product should be able to ride through typical voltage sags, but in many cases the first sag … [Read more...]
Regulatory Agencies Upping Enforcement Actions
The FCC carries out random audits of products that have received recent TCB grants. David A. Case NCE, NCT, Cisco, Richfield, Ohio, USA The question that occasionally comes up, generally from someone not familiar with compliance, goes something like, “What will the Federal Communications Commission do to us if we are non-compliant, or how will the agency know?” Both questions … [Read more...]
Increasing Design Flexibility for Board-Level Shielding
Today's consumers want electronic devices in all shapes and sizes, a demand that can dictate the enclosure design and board shape. David P. Donaldson, Applications Engineer, W.L. Gore & Associates, Inc., Newark, DE, USA As electronic devices are getting smaller and as consumers are demanding more features, designing printed circuit boards (PCBs) is becoming increasingly … [Read more...]
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