RS Components’ Souriau 8DA connector is part of the Micro-38999 series. The 8DA range is up to 45% smaller than the traditional size 9 connector, but still offers the features of a connector designed to meet the requirements of MIL-C-38999.The aluminium shell is designed with backshell to accept heatshrink termination and is sealed to IP67 when mated. The connectors are … [Read more...]
U.S. Patent Issued for Card Edge Connector
United States Patent no. 7,927,114 was assigned to Hon Hai Precision Ind. Co. Ltd. "Card Edge Connector Having Additional Ground Contact Facilitating Grounding of Inserted Memory Module" was invented by Hua Li and Zhen-Hua Wang. According to the abstract released by the U.S. Patent & Trademark Office, “A card edge connector includes an elongated housing defining a plurality … [Read more...]
Long-Reach Cable Assemblies Designed for EMI Control
TE Connectivity’s long-reach cable assemblies designed to the DisplayPort standard meet the V1.1a reduced bit rate (RBR) specification, offering 1.62 Gbps per lane (for up to four lanes) with embedded clocking for better signal integrity and electromagnetic interference control. The long-reach cable assembly can be used in projectors, large commercial LCD monitors, and bulletin … [Read more...]
New Damped Oscillatory Wave Immunity Test Standard
IEC 61000-4-18 ed1.1 Consolidated with am1, Electromagnetic compatibility (EMC) - Part 4-18: Testing and measurement techniques – Damped oscillatory wave immunity test, relates to the immunity requirements and test methods for electrical and electronic equipment, under operational conditions, with regard to: a) repetitive damped oscillatory waves occurring mainly in power, … [Read more...]
Accurate Feedthrough Capacitor Measurements at High Frequencies Critical for Component Evaluation and High Current Design
The shunt capacitor is the critical element in almost all low pass filters. Feed-through capacitors are configured as a center electrode passing through a grounded housing, which contains the desired capacitance from the electrode to the grounded housing, and practically eliminates lead inductance. This article will explain the importance of feedthrough capacitors, and provide … [Read more...]
Going from Analog to Digital
Philip F. Keebler, EMC Group, Electric Power Research Institute, Knoxville, Tennessee USA; Stephen Berger, TEM Consulting, LLC, Georgetown, Texas USA Nuclear power plants (NPPs) in the United States have been undergoing upgrades from analog instrumentation and control (I&C) equipment to digital equipment over the past several years. Upgrades have been occurring on the … [Read more...]
Numerical Solution of Complex EMC Problems Involving Cables with Combined Field / Transmission Line Approach
Many problems of electromagnetic compatibility and interference involve cables, which either radiate through imperfect shields and cause coupling into other cables, devices or antennas, or which receive (irradiation) external electromagnetic fields (radiated from antennas or leaked through other devices) and then cause disturbance voltages and currents potentially resulting in … [Read more...]
High Power Electromagnetic (HPEM) Threats to the Smart Grid
This paper is focused on the threats and impacts of High Power Electromagnetic (HPEM) environments on the U.S. Power Grid and further introduces the implications of making the power grid “smarter” through the introduction of additional electronics. These Smart Grid electronics may introduce additional vulnerabilities if the grid is exposed to the high power EM threats of … [Read more...]
Troubleshooting Radiated Emissions Using Low-Cost Bench-Top Methods
Kenneth Wyatt Wyatt Technical Services LLC Editor's Note: Click on the pdf icon at left for a printable copy of this article. Because time-to-market and budget factors often drive many of today’s high-tech designs, electromagnetic compatibility (EMC) issues often surface at the last moment in the design cycle, potentially delaying product introductions. Very often, simple … [Read more...]
New EMC Requirements for Commercial Avionics: RTCA/DO-160G
Erik J. Borgstrom, Environ Laboratories LLC, Bloomington, Minnesota, US OVERVIEW RTCA/DO-160G, Environmental Conditions and Test Procedures for Airborne Equipment, prepared by RTCA Special Committee 135, was issued on December 8, 2010, superseding the previous version, DO-160F [1]. DO-160G covers standard procedures and environmental test criteria for testing airborne … [Read more...]
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