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Interference Technology

For EMI / EMC Engineers

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Global Map of Magnetic Anomalies Compiled

 

An international team of researchers has assembled the first global map of magnetic peculiarities, or anomalies, dispersed around the globe. These magnetic anomalies are caused by differences in the magnetism of rocks within the crust of the Earth. This map is the result of many years of negotiations to gather confidential data from many governments and organizations. The … [Read more...]

Shielding Effectiveness of Gaskets, Composites and Shields

 

There is an ever-increasing demand for lighter, stronger, easy-to-manufacture and cost-effective shielding solutions. Jack Prawica and Jereme Irwin DLS Electronic Systems, Inc., Wheeling, IL, USA As we move into the 21st century, there is a demand for stronger, lighter, less expensive, and environmentally friendly, RoHS-compliant* conductive materials.  Many industry insiders … [Read more...]

Line of Custom Filters Targets Multiple Applications

 

A line of custom EMI filters offered by Electrocube provides solutions for unique filter requirements. Complete design engineering and testing capabilities are provided to customers in the military, industrial, electronic, and aerospace industries. Electrocube filters have current carrying capacities of 0.1 amp to 500 amps; voltage ratings of 1 VDC to 5000 VDC; frequencies to … [Read more...]

Thermal and EMI Shielding Boost Design Reliability

 

Optimal shielding helps meet the challenges of cramming maximum functionality into minimal PCB space. Paul J. Stus Laird Technologies, St. Louis, MO, USA Advances in the miniaturization of electronic components has intensified the need for manufacturers to solve multiple problems simultaneously and earlier in the design process. Solving the issues quickly and early in … [Read more...]

Filter Connectors Designed with Multilayer Varistor Arrays

 

Affordable transient protection is now available within electronic connectors. Chris Noade, Syfer Technology Limited, Arminghall, Norwich UK “Connectors contribute nothing to electronic equipment” is an old and contentious statement that raised a few hackles when written, but is now undisputedly outdated and wrong! A modern connector, in isolation, can fulfill the equipment … [Read more...]

Interference Suppression Using a Balanced MLCC

 

An innovative capacitor design can provide more RFI suppression in a substantially smaller package. Steve Weir and James Muccioli X2Y Attenuators, LLC, Erie, PA, USA Instrumentation amplifiers are often employed in hostile noise environments. Sensor lead cables may pick up substantial RF radiation, particularly if they are long and/or not well shielded. When applied to the … [Read more...]

Building a State-of-the-Art 5-Meter Chamber

 

An efficient shield room for automotive testing progresses from design to finished structure. Michael Koffink and Bob Mitchell Intertek Four years ago, we noticed a growing demand for EMC testing from the automotive industry. As cars and trucks now feature myriad on-board electronic devices, they are increasingly susceptible to stray emissions while simultaneously functioning … [Read more...]

2007 Update on Intentional Electromagnetic Interference (IEMI) and High-altitude Electromagnetic Pulse (HEMP)

 

Of concern are high-level electromagnetic fields that will create serious problems for electronic systems on the Earth’s surface, including critical infrastructure. Dr. William A. Radasky, Ph.D., P.E. Metatech Corporation, Goleta, CA INTRODUCTION Over the past seven years, a substantial number of articles have been written by this author and others identifying the threat … [Read more...]

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