A highly ruggedized system enclosure from One Stop Systems (OSS) targets military and airborne applications. Constructed of solid seam-welded aluminum, the 11U high enclosure measures 19″ (H) x 25″ x 17″ (W) and weighs 56 pounds. It contains a 3U 15-slot CPCI backplane and features a “floating card that sits within the enclosure and is surrounded by four banks looped cable … [Read more...]
Expanded Filter Family Assures EMC Compliance in High Power Applications
The new FN 3280 from Schaffner has been expanded for use in higher power applications with new sizes including 300 A, 400 A, and 600 A. The new high-performance EMI filters are well suited to use in large industrial machines and plants with numerous motor drives, long motor cables, and high interference levels—as well as inverter and converter applications such as UPS … [Read more...]
Measurement of Intermittent Emissions with a Time-Domain EMI Measurement System
With time-domain EMI measurement, a single scan can test intermittent radiating devices quickly and accurately. Stephan Braun and Peter Russer, Institute for High Frequency Engineering Munich University of Technology Munich, Germany For some time, measurements of electromagnetic interference have been carried out by super-heterodyne receivers operating in the frequency … [Read more...]
Power Supply Capacitors Offer High Capacitance in a Reduced Footprint
The TurboCap™ MLCs (multilayer capacitors) from AVX Corporation are stackable capacitors that feature a compact footprint to conserve PCB space. These patent-pending devices offer both high capacitance values and low ESR and can handle high ripple current at high frequencies and power levels. TurboCaps are well suited for use in filters in the input and output stages of DC/DC … [Read more...]
More Shielding Products
Line of Silicone and Fluorosilicone Elastomers Offers Variety of Design OptionsConductive elastomers from UK-based Kemtron Ltd. are fully post cured silicones or fluorosilicones with highly conductive particles that provide low contact resistance between mating surfaces. The various fillers have been chosen to ensure galvanic compatibility between the surfaces. Extruded … [Read more...]
Time Domain Measurement System Processes Signals in Real Time
The TDEMI 3G systems is the latest addition to the TDEMI family of test instruments from Germany’s GAUSS Instruments. The system digitizes the EMI signal using an analog-to-digital unit. Simultaneously, the TDEMI 3G provides several thousand digitally simulated EMI receivers working in parallel—via an FFT-based bank of filters and parallel detectors. An extended measurement … [Read more...]
Don’t Settle for Being Just an E3 Engineer—Become an E3 Advocate!
Expand your E3 support role so you can provide your project with a “best value” solution by taking project priorities into consideration WOODY HAWTHORNE INTRODUCTION It is often the accepted practice for the E3 engineer on a program simply to provide his technical expertise on meeting EMI, EMC, EMP and other E3 requirements and to let others take the recommendations from … [Read more...]
Updates on the New Release of IEC 61000-4-3 Edition 3
Continuous efforts are needed to maintain a consistently repeatable test Jason Smith, AR Worldwide Souderton, PA The IEC 61000-4-3 standard on radiated electromagnetic field immunity has long been used in order to satisfy one key criterion of the European Union’s requirements for obtaining the CE mark. It is usually used in conjunction with a specific product test standard … [Read more...]
Expanded Line of IEC Inlet Filters Includes Higher Attenuation Models
An expanded line of IEC inlet filters from Schaffner EMC includes two new versatile models that offer up to 10 dB better attenuation than other versions in the series. The new FN9244 and FN9244E (with an integrated choke for additional EMI suppression on the earth line) offer a current rating of up to 15 A with an inductance up to 59.5 mH. These devices are well suited for use … [Read more...]
Multilayer Ceramic Capacitors Available in ESD-Resistant Version
The new E-series of multilayer capacitors from EPCOS is based on X7R material to create highly rugged and durable components. They are characterized as highly resistant to ESD pulses. With low capacitance values down to 1 nF, the E-series offers protection from EMI up to 300 MHz. With such low capacitance, these devices can also be used to implement ESD-resistant low-pass … [Read more...]
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