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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...]

Protection of Commercial Installations from the 'Triple Threat' of HEMP, IEMI and Severe Geomagentic Storms

 

With properly designed protection, commercial installations and buildings can be protected against each of these environments. William A. Radasky, Ph.D, P.E., Metatech Corporation, Goleta, California, USA Over the past five years, many publications have indicated that three unusual high-power electromagnetic threats pose significant danger to industry. These are: the … [Read more...]

Mitigation of EMP Effects Using Shielded Rooms and Enclosures

 

Performance and reliability of a shielding system is essential in times of emergency. Wayne D. Martin, ETS-Lindgren, Glendale Heights, Illinois, USA The most cursory assessment of news and events around the globe during this first decade of the Twenty-First Century leads to the inescapable conclusion that we live in perilous times. Around the globe, political, ethnic and … [Read more...]

The New EMC Requirements of Electric Cars

 

Refinements are needed for better correlation between chip-level or module-level measurements and whole vehicle testing. Michael Koffink and Roland Gubisch, Intertek Testing Services, Boxborough, Massachusetts, USA The automotive EMC environment is in a constant state of flux as new onboard electric devices, communications media (both wired and wireless), and new drive … [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...]

Shielding of an EMG Machine Utilizing a Conductive Tent

 

Testers seek to remedy the longstanding problem of “noisy’ responses from an EMG instrument. Terence P. O’Laughlin and Michael J. Oliver, MAJR Products, Saegertown, Pennsylvania, USA INTRODUCTION This paper presents a shielding methodology and test in which an electromyography (EMG) instrument is shielded from spurious electromagnetic and radio frequency interference … [Read more...]

All About Austin

 

Swim year-round in a beautiful, natural pool fed by underground springs. Discover restaurants with personalities as interesting as the food. Be energized with an evening spent listening to jazz, blues, country or rock. When you’re in Austin, you can hear them all during a single evening stroll along historic 6th Street.A sunny climate and idyllic setting on the edge of the … [Read more...]

Low Frequency Magentic Shielding: An Integrated Solution

 

Innovative direct coating technique as an alternative to conventional foils Rich Emrich and Andrew Wang, Integran Technologies Inc.; Toronto, Canada INTRODUCTION Many electrically sensitive devices, such as transducers, sensors, detectors, and test instrumentation require protection from electromagnetic interference (EMI). Higher frequency interference is normally shielded … [Read more...]

The NRTL Program

 

A clear understanding of OSHA safety requirements and the objectives of the NRTL program can render the testing and approval process easier for electronics manufacturers. Regan Arndt, TÜV SÜD America, San Diego, California, USA INTRODUCTION The Occupational Safety and Health Administration (OSHA), an arm of the U.S. Department of Labor, is the primary federal agency … [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...]

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