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...]
New 1GHz Optically Isolated Differential Measurement System
Tektronix recently announced the highest bandwidth optically-isolated differential probing system at APEC 2016. The system offers complete galvanic isolation between the measured system and oscilloscope. The system will accurately measure high bandwidth differential signals in the presence of large common-mode voltages. It will also offer immunity to external interference and … [Read more...]
New Filters for Asynchronous Motor Control
TDK recently announced a new line of filters designed expressly to filter the frequency converters for asynchronous motor controllers. High frequency noise emissions from these frequency converters has become more of an issue as older motor technology is replaced with the newer variable speed - variable frequency motor controller systems. The EMI from these can cause … [Read more...]
New High-Speed CAN Transceiver Families With High EMC Performance
TI recently announced two new families of controller area network (CAN) transceivers that meet all industry standards for EMC from both U.S. and European auto manufacturers. Key features include compliance to SAE J2962, European IBEE, CISPR 22, IEC 61000-4-6 up to 10V IEC 61000-4-4 Criteria A to ±4kV, and IEC 61000-4-3 from 80 MHz to 2.7 GHz and 100 V/m. Even more … [Read more...]
Lightning Induced Transient Tester Available for Rent
Advanced Test Equipment Rentals signed an agreement with EMC Partner to supply the new AVI3000, which is designed to simulate the new MIL-STD-461G CS117 and DO-160 Section 22 recently added requirements for lightning induced transients. The AVI3000 allows full compliance to level 3 for PIN injection and cable bundling tests. All six waveforms reside in the single unit. To … [Read more...]
Spectrum Analyzer Fundamentals – Part II
Spectrum Analyzer Fundamentals - Part II, presented by Bill Kardine, Application Engineer, of Rohde & Schwarz, expands on Part 1 of this recorded webinar. It explains more specific concepts relevant to spectrum analyzers, such as common analyzer measurements. Phase noise, dynamic range, and other frequently misunderstood specifications are explained, in addition to typical … [Read more...]
White Papers On Automotive EMC Applications Released
ON Semiconductor has released several white papers dealing with automotive EMC applications. The list includes EMI/ESD Protection for the CAN Bus, Auto Power Supply Applications and Efficiency, and EMC Tests and PCB Guidelines for Automotive Linear Regulators. The controller area network (CAN) is a popular communications protocol for automotive systems. Power management is … [Read more...]
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