Functional Safety, Risk Management, EMC and EMI
What is Functional Safety? The safety of products, systems and installations can be split into two parts: i) ‘Basic’ safety: electric shock, excessive temperatures, excessive radiation, fire,...
View ArticleUnder the Medical Safety Standard IEC 60601-1-1:2014 an EMC Test Lab is not...
Note: This content was originally posted in January 2020 on emcstandards.co.uk. IEC 60601-1-2:2014 is a medical device safety standard that deals with safety risks that can be caused by electromagnetic...
View ArticleEMC Question for 400Hz Power System
Question: I would appreciate it if you could provide your view / share your expertise on the EMC/EMI protection requirements between the 400Hz Ground Power Systems and the various ICT/ELV...
View ArticleEMC Confidence Checking
I was recently working with a manufacturer of stand-alone ticket machines, who had big problems with Ethernet-related emissions. Long story short – it was the Ethernet hub they had incorporated in...
View ArticleMains Harmonic Current Emissions are Always Bad – It is Risky to Rely on the...
Many (perhaps all) of EMC standards that are listed under the EMC Directive, that set limits for mains harmonic emissions, have exclusions (‘let-outs’) for certain types of equipment, especially:...
View ArticleMIL-STD-461G Implications with RE102 Changes
Introduction: MIL-STD-461G was issued in December 2015 incorporating many changes throughout the document prompting user questions or interpretations. Laboratory situations arise where the generic...
View ArticleDon’t Rely on the Stability of the Mains Frequency
My old colleague and good friend Tim Williams sent me the story below for inclusion in EMI Stories/Banana Skins, and I found it so interesting in so many ways that I decided to publish it as a Blog. In...
View ArticleKey Points to Remember While Choosing PCB Assembly Company
Once you have designed a PCB and have completed everything that needs to be done before the assembly process, you would require a PCB assembly company to assemble your PCB without any problems. After...
View ArticleGood SI, PI and EMC require this most of all…
Good SI, PI and EMC require a proper, grown-up understanding of electricity… Instead of what circuit designers are taught! As electronic designers, we were taught the children’s version of electricity...
View ArticleThermoplastic Faraday Cage: Specialty Polymers for Inherent EMI Shielding of...
Co-Authors: Leen-Pieter Deurloo | Martin Sas, Ph.D. | Marnik Vaes Today’s electronics can generate strong electromagnetic interference (EMI) that may affect electromagnetic compatibility (EMC) and, as...
View ArticleInstrument Hardware to Ensure Accurate Measurements Using NFPA 5lb Weights...
Authored by: Gene S. Monroe, iNCE, NASA Langley Research Center, Hampton, VA Bob Vermillion, CPP, Fellow, iNCE, RMV Technology Group, LLC, NASA Ames Research Center, CA INTRODUCTION Proper verification...
View ArticleFor Remote Patient Monitoring Systems, Wireless Coexistence Can Be Lifesaving
The demand for wireless medical applications such as remote patient monitoring, real-time diagnostic analysis, smart surgical systems, and implantable sensors have grown significantly over the last...
View ArticleInsertion Loss and Filter Performance
Background Filters are almost always a part of electronics design. Design engineers design a filter to achieve certain attenuation in specified frequency range. There are many types of filters, such...
View ArticleComparison of PWM VFDs versus Resonant Link Converters – Part 1
AC variable frequency drives (VFDs) have been in existence in a number of forms since the early 1970s. In the early 1980s the “pulse width modulated” (PMW) VFD versions began to appear. This form of...
View ArticleComparison of PWM VFDs versus Resonant Link Converters – Part 2
In Part 2 of this blog, the harmonic current distortion of a typical Variable Frequency Drive (VFD) is discussed, as well the possible solutions to the problems that this causes. Active Front End or...
View ArticleA Simple Method for Estimating Radiated Emissions
A simple method for estimating radiated emissions I recently received the following question: How to calculate the radiated E field with following test conditions with an antenna placed 1 meter away...
View ArticleSecuring New 5G Physical Assets with Electronic Access Control
The 5G era of mobile computing and communications is rapidly moving forward. 5G stands for the fifth generation of wireless infrastructure—a massive upscale of network technology. It will provide data...
View ArticleMains Harmonic Current Emissions are Always Bad – It is Risky to Rely on the...
Many (perhaps all) of EMC standards that are listed under the EMC Directive, that set limits for mains harmonic emissions, have exclusions (‘let-outs’) for certain types of equipment, especially:...
View ArticleEMC Confidence Checking
I was recently working with a manufacturer of stand-alone ticket machines, who had big problems with Ethernet-related emissions. Long story short – it was the Ethernet hub they had incorporated in...
View ArticleDoing Things That Usually Do Not Work
“If you’re not making mistakes, then you’re not doing anything.” — John Wooden Over the years, I have seen several things that make me scratch my head. Many of them are things I have done (there, I...
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