The NNB 21 line impedance stabilization network from Langer EMV-Technik is designed for measuring conducted emissions from DC power cables according to the CISPR 25/ISO 7637 standard. The unit was designed primarily for automotive EMC test applications and can be used from 100 kHz to 1 GHz. Two circuits can be measured at the same time or separately. If there are measurements … [Read more...]
New Line of Power Entry Filter Modules Announced for Medical Applications
The KMF power entry module from Schurter is for use in protection class II double-insulated applications. The new version is perfectly suited for medical equipment used at home. Protection class II equipment, in contrast to protection class I equipment, generally has no metal case. This category of equipment is called double insulated, and requires higher safety levels for … [Read more...]
New USB Type-C Connectors and Cable Assemblies
Heilind Electronics, the largest distributor of Molex products in the U.S.A., is now stocking Molex USB Type-C shielded I/O connectors and cable assemblies. The more compact design of the Type-C connector offers greater PCB savings, while allowing high-frequency mating in data, consumer, automotive, and industrial I/O applications. Molex USB Type-C connectors support up to … [Read more...]
Army’s Need for More Spectrum
(May 1, 2016) The electromagnetic spectrum is a valuable, but crowded, asset and the Army’s demand for spectrum has increased dramatically. To complicate matters, today’s operating environment is the most challenging and diverse the Army has ever known. Though primarily based in the continental United States, the Army is expected to respond rapidly to threats and to … [Read more...]
Military Tests Autonomous Ship Designed to Cross Oceans
(May 2, 2016) The military has starting testing the world's largest autonomous surface vessel — a self-driving, 132-foot ship designed to travel across oceans without a single crew member. The Sea Hunter, developed by DARPA, could potentially revolutionize the shipping industry, if tests prove successful. During the testing phase, the ship will have human operators as a safety … [Read more...]
The IEMI Threat and a Practical Response
William Turner Senior Design Engineer MPE Ltd Email: [email protected] IEMI Threat With the increasing use of electronics to control so many aspects of modern life, from smart grids to driverless cars, Intentional Electromagnetic Interference (IEMI) is a threat gaining concern. Various initiatives have been set up to address the needs of specific market areas, and new … [Read more...]
What's new: IEC 61000-4-5 Second Edition vs. Third Edition
by Jeff Gray, Chief Technology Officer, Compliance West USA Introduction IEC 61000-4-5 is part of the IEC 61000 series, which describes surge immunity testing caused by over-voltages from switching and lightning transients. The second edition of IEC 61000-4-5 was released in 2005 and has been in use for many years. The third edition was released as an EN standard in 2014. The … [Read more...]
Multilayer SMD Ferrites Optimized for Peak Current Loads
By Markus Holzbrecher 1. Background 1.1. Chip bead ferrites Chip bead ferrites are inductive surface mount devices (SMDs) used for filtering undesired high frequency signal distortions in printed board assemblies. They are manufactured using a multilayer screen printing process. Optimised for as high as possible losses, these components consist of a nickel-zinc-ferrite … [Read more...]
How to Select the Right EMC Standard for Your Product
Many companies developing products find it difficult to determine the appropriate EMC standard to comply with. The IEC (International Electrotechnical Commission) has developed a web page that explains EMC and offers a tabbed selection method for determining the right standard that applies to your product family. You can then go to their web store and purchase downloadable … [Read more...]
How the IEC is Organized for EMC
International EMC standards can be confusing to the newcomer. The IEC has posted a chart as to how the various standards organizations are organized. The first level of organization is the committees, such as TC77, CISPR, and various product committees. These committees have liaisons with associated standards organizations, such as ISO, ITU, CENELEC, and many others. Many of … [Read more...]
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