Does your product use AC mains <16A? IEC 61000-4-31 relates to the conducted immunity of electrical and electronic equipment to electromagnetic disturbances coming from intended and/or unintended broadband signal sources in the frequency range 150 kHz up to 80 MHz. In this blog post, Kenneth Wyatt, Senior Technical Editor at Interference Technology, spends some … [Read more...]
Classical Shielding Theory vs. Near-Field Measurements
This article addresses the fundamental concepts underlying the classical shielding theory based on Schelkunoff’s equations [1]. In order to assess the applicability of these equations, an understanding of their origin, assumptions made in their derivations, and their limitations, are needed. This tutorial article addresses each of these points. The goal is not to show the … [Read more...]
Signal and Data Line Filters Designed for Use in MRI Rooms
ITG Electronics introduces Signal and Data Line filters designed for use in MRI Rooms to provide clean power to low voltage signal and data entering MRI Shielded Rooms through power and CAT-5 cables to mitigate interference with MRI scanning equipment operation. Elmsford, NY June 2018 – ITG Electronics, a leading design and manufacturer of CM, DM chokes and Transformers … [Read more...]
UNECE Regulation 10: Conformity of Production
In this second blog in the series on Type Approval to UNECE Regulation 10, Revision 5 we will cover the subject of Conformity of Production (CoP) and explain why it is a critical part of the Type Approval process. The requirement for CoP is a fundamental element of the 1958 Agreement and the procedure is set out in Schedule 1 therein. Approval Authorities are required to … [Read more...]
UNECE Regulation 10: The Type Approval Process
Welcome to the first in a series of blogs on UNECE Regulation 10. In the first few blogs we will cover the fundamentals of Type Approval and the processes involved in obtaining an 'E' mark. Subsequent blogs will cover the various EMC test requirements set out in UNECE Regulation 10, Revision 5 (hereafter referred to as R10.05) in detail. Testing is only part of the … [Read more...]
ROHM’s New Ultra-Low-Ohmic Shunt Resistors for Automotive Systems and Industrial Equipment
Kyoto and Santa Clara, Calif., – January 25, 2018 – ROHM has recently announced the development of a more compact version of its highly regarded PSR series of high power ultra-low-ohmic shunt resistors for current detection in automotive and industrial applications. Shunt resistors are widely used in the automotive and industrial markets to detect current in high power sets. … [Read more...]
Call For Authors/Bloggers – Editorial Submissions to Interference Technology Magazine
In over 45 years of publication, Interference Technology has earned a reputation for publishing only the highest quality technical articles that focus on practical and innovative technological developments in the EMC, EMI, and RFI fields. Product designers and EMC/compliance engineers have come to rely on Interference Technology as a source of quality, unbiased, non-commercial … [Read more...]
Case Study: Poor PC Board Layout Causes Radiated Emissions
In this case study we're going look at some recent radiated emissions fault finding we performed for a customer. This highlights how one might go about the fault finding process, some of the considerations you might have when coming up with a solution, and how poor PCB layout can give you an emissions headache. Background A new customer discovered a radiated emissions problem … [Read more...]
Radio Equipment Directive
This article provides an update on changes occurring as a result of the new Radio Equipment Directive (RED) 2014/53/EU which can be used from June of 2016. It looks at the changes in the product and regulatory landscape and what it means to equipment manufacturers. More detail on the history of the RED can be found in the article, Radio Equipment Directive, in the … [Read more...]
Huf Installs In-House Testing Thanks to MVG and AR
(October 25, 2016) The Microwave Vision Group (MVG)’s Partnership with Amplifier Research (AR) has enabled automative component company, Huf North America, to more quickly identify potential Electromagnetic Compatibility (EMC) issues. MVG has built and installed a customized semi-anechoic chamber to allow EMC testing in-house at Huf and meet all the varied required … [Read more...]
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