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Interference Technology

For EMI / EMC Engineers

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Shielding

RJ45 with Zinc Diecast Housing Improves EMI/RFI Shielding

 

CONEC GmbH’s existing product line of IP67 rated RJ45 and USB connectors with bayonet locking design are now available with diecast housings. The devices’ housings are nickel plated and improve EMI-RFI shielding. This series is ideal for Ethernet and USB applications in harsh environments, outdoor usage, industrial, communication and factory automation systems. A simple mating … [Read more...]

EMI/RFI Shielding Conduits

 

Electri-Flex Company has released a new catalog featuring the SHIELD-FLEX™ line of EMI/RFI Shielding conduits. SHIELD-FLEX™ represents a line of three shielded conduits, SLA™, EMS™ and EMCS™. This line of conduits is designed to protect sensitive electronic circuits from electromagnetic and radio frequency interference (EMI/RFI) in applications such as communications, radar and … [Read more...]

Holding Steady

 

As the economy gained momentum in late 2009 and early 2010, engineering organizations, like every other business sector, sensed promise that a strong, self-sustaining recovery was kicking in. However, as government spending to stimulate the economy trailed off and businesses concentrated on rebuilding their inventories, the growth rated started to slow – a pattern that … [Read more...]

System Compatibility: An Essential Ingredient for Achieving Electromagnetic Compatibility and Power Quality for Lighting Control Systems

 

Philip Keebler, Kermit Phipps, Frank Sharp, EPRI Lighting Laboratory For years, lighting systems have been operating as stand-alone loads without the use of sophisticated lighting controls for energy savings in all types of facilities—residential, commercial, and industrial. Utilities and end users viewed lighting controls in the past as, luxury, systems that were used only … [Read more...]

Differential Transfer Impedance of Shielded Twisted Pairs

 

Michel Mardiguian, EMC Consultant, Saint-Rémy-lès-Chevreuse, France The concept of Shield Transfer Impedance (Zt), introduced by S. Schelkunoff in 1934, is a very convenient parameter for the prediction and control of EMI coupling through cable shields. Although widely applied to coaxial cables against EMI susceptibility problems, the Zt parameter can be easily extended to … [Read more...]

Clocking Strategies for EMI Reduction

 

Sassan Tabatabaei, SiTime Corporation Electronic devices have to operate in close proximity, whether it is in the home, office, industrial establishment, or outdoors. Each of the devices may radiate electromagnetic energy, which can interfere with the operation of the rest of the devices. To avoid such harmful interference, governments and industry bodies limit the amount of … [Read more...]

Effective EMC Troubleshooting with Handheld Probes

 

EMC testing is an unavoidable part of the development cycle for electronic products. As clock frequencies continue to increase, radiated emissions get harder to control. In an ideal world, the R&D engineer would test the emissions from his product early in the design stage and retest frequently as design changes were made, just ass he tests whether his product meets its … [Read more...]

EMI Shielding Simplified

 

VTI Vacuum Technologies Inc., a provider of EMI/RFI shielding for electronic device designers, recently partnered with William D. Kimmel, PE of Kimmel Gerke Associates, Ltd., to publish a whitepaper explaining the fundamentals of the EMC shielding process.The paper illustrates basic concepts to understand how EMI shielding is effective in providing protection for equipment. In … [Read more...]

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