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Interference Technology

For EMI / EMC Engineers

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Shielding

Comparison 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 motor control produced less motor rotor and stator harmonic heating and delivered smoother torque control at slow motor speeds. Thirty years on PWM VFDs are still the most … [Read more...]

Insertion 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 as high pass, low pass or bandwidth. Popular filter configurations include L-C, C-L-C (π) or L-C- L (T). It is safe to say that when it comes to filter design, the discussion of … [Read more...]

Interstate Connecting Components (ICC) Introduces BHA PTFE-Plated M28876 Connectors from Amphenol Fiber Systems

 

Interstate Connecting Components, a division of Heilind Mil-Aero and leading distributor of military-aerospace connectors and accessories, is now offering M28876 circular fiber optic connectors with black hard anodized (BHA) PTFE (polytetrafluoroethylene) plating. The connectors are precision-engineered by Amphenol Fiber Systems International, a leading manufacturer of fiber … [Read more...]

TMD USA Wins Major Defense Contract For Traveling Wave Tube Amplifiers in A Mission-Critical Surveillance Role

 

Now part of Communications & Power Industries (CPI)) has won a large defense contract for traveling wave tube amplifiers (TWTAs) for use in a radar unmanned aerial vehicle program.  Valued in excess of $2.5 million, the contract was awarded by a prime contractor under the terms of a competitive bid.  Said Tom Curtin, vice president, sales and business development, TMD … [Read more...]

Orbel, Niche Designer and Manufacturer of Light-Gauge Metal Components and Assemblies, Serves Critical-Mission Applications from Fighter Jets to Self-Driving Cars for 60 Years and Counting

 

By combining hard work with ingenuity over three generations, Orbel, maker of custom light-gauge metal components and assemblies, quietly contributes to progress around the world.   From precision parts for U.S. fighter jets to electric cars and tomorrow’s self-driving cars, this three-generation family business has grown from a man-in-a-garage operation started … [Read more...]

HARTING Names Heilind Electronics 2020 North American Broadline Distributor of the Year

 

The North American Broadline Distributor of the Year award is based on the outstanding support of HARTING products, year-over-year sales growth and first-class customer support. Heilind Electronics, a leading distributor of electronic components and authorized global distributor for HARTING, has been honored with the manufacturer’s 2020 North American Broadline Distributor … [Read more...]

Maximizing Framerates and Surpassing GigE Bandwidth Limitations with Lossless Compression

 

When getting the most amount of detail from a moving target is critical, system developers are constantly looking for ways to increase framerates without compromising on image quality, ideally at minimal or no extra cost. Introducing the Lossless Compression Feature Delivers up to 70% higher maximum frame rates. Thanks to the reduce image size, the overall throughput of … [Read more...]

Thermoplastic Faraday Cage: Specialty Polymers for Inherent EMI Shielding of Medical Devices

 

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 a result, impact device performance. Polymer compounds with integrated electrical conductivity offer a potential solution to resolve EMI and electrostatic discharge … [Read more...]

Benefits for Test & Measurement Market from Using LabVIEW with Sentinel 3

 

PPM Test has announced a National Instruments certified LabVIEW driver for their world-leading EMP/EMC conformance test and measurement ‘Sentinel 3’ system. Laboratory Instrument Engineering Workbench (LabVIEW) is a system that helps users to visualize their applications from hardware configuration through to debugging via graphical programming. By being National Instruments … [Read more...]

Don’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 so very many EMC standards and other meetings on EMC, we hear that the stability of the AC mains power frequency is either ‘not an EMC issue’ or is ‘never a real EMC … [Read more...]

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