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Interference Technology

For EMI / EMC Engineers

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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...]

EMC 2009 Call for Demonstrations – Call for EMC Computer Modeling & Simulation Demonstrations

 

In this highly popular symposium event, fundamental EMC modeling approaches and simulation methods are illustrated through a series of interactive computer demonstrations. Various computational electromagnetic (CEM) modeling techniques will be demonstrated illustrating their application to simple canonical type problems in order to show how specific EMC problems can be solved. … [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...]

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...]

First Offshore Wind Farm in U.S. Approved

 

The federal government approved Wednesday the nation’s first offshore wind farm off the coast of Cape Cod, after nine years of regulatory review. The 130 Cape Wind turbines would lie in Nantucket Sound, about five miles from the nearest shoreline, and cover 24 square miles. The tip of the highest blade of each turbine would reach 440 feet above the water. While supporters say … [Read more...]

Plated Mesh Features Encapsulated Wires

 

The EMIgard™ Series of conductively plated, optical fine wire mesh for EMI/RFI shielding of electronic displays and enclosures is available from Dontech. This shielding mesh is manufactured in 304 stainless, copper, and custom alloys. Meshes are available from 50 to 250 openings per inch (opi) in standard sheet sizes of 22″ x 28″ or precut to a specific size. In a unique, … [Read more...]

MOV Planar Arrays Provide Transient Protection in Safety Critical Applications

 

The newest range of MOV (metal oxide varistor) planar arrays from Syfer Technology provides comprehensive protection from lighting strikes and other transients in safety critical applications including the military and aerospace industries. These application specific MOV planar arrays are typically built into military-style filtered connectors, including circular shell sizes 8 … [Read more...]

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