An efficient shield room for automotive testing progresses from design to finished structure Michael Koffink, Bob Mitchell Intertek ETL Semko Littleton, MA Four years ago, we noticed a growing demand for EMC testing from the automotive industry. As cars and trucks now feature myriad on-board electronic devices, they are increasingly susceptible to stray emissions while … [Read more...]
Lithium-zinc Ferrite for the Suppression of Electromagnetic Noise
Studies show that Li-Zn ferrites can successfully suppress EMI N.C. Joshi, S.S. Islam, Ph.D., Jamia Islamia University Jamia Nagar Anjali Verma, Ph.D., Indian Institute of Technology New Delhi, India Recent technological development has been characterized by an unprecedented proliferation of digital technology in information and communications equipment. The worldwide … [Read more...]
Reverberation Chamber for EMC Testing
The reverberation chamber provides the most realistic simulation/equivalency for electronics functioning within a cavity Er-Ping Li, Ph.D.; Xing-Chang Wei, Ph.D., Electromagnetic Labs, Singapore National Institute of High Performance Computing Singapore Introduction The problem is familiar, but growing. The widespread and ever-growing use of electronic devices with high-speed … [Read more...]
Understanding Inductance in the Real-world
As soon as current flows through metal conductors, inductance exists Bruce Archambeault, Ph.D., IBM Distinguished Engineer, IBM, Research Triangle Park, NC The concept of inductance is one of the most misunderstood concepts in electrical engineering. Terms such as ‘self inductance’, ‘loop inductance’, ‘partial inductance’, ‘mutual inductance’ are used with little concern … [Read more...]
Expanded Amplifier Line Delivers Reliable Performance in Demanding Environments
Five new broadband power amplifiers from Teseq operate from 0.8 GHz to 3.1 GHz and from 2 GHz to 6 GHz with power levels ranging from 30 W to 450 W. Three Class A models are based on gallium arsenide (GaAs) integrated circuit (IC) technology and offer significantly better compression characteristics and increased efficiencies than earlier silicon-based low power amplifiers. The … [Read more...]
VIDEOs: the latest from Espresso Engineering!
Washington Laboratories Ltd., Interference Technology, and American TCB have teamed to create Espresso Engineering. Their latest offerings include: 1. ATCB’s William Graff reviewing radio law and FCC rules and regs. (1.57 min.) 2. Steve Ferguson clarifying intricacies of CE101 testing.(10.45 min.) 3. Tom Fortier and Joe Avrunin of Tektronix unravel the ever-increasing … [Read more...]
RF Conducted Immunity System Tests to DO 160D & E and Other Exacting Standards
The Model C100400 from AR RF/Microwave Instrumentation is a fully contained system for testing RF conducted immunity. It contains all the instruments need to perform conducted immunity testing for the MIL-STD-461D/E, DO 160 D/E, and IEC 61000-4-6 specifications. The system includes a signal generator, a two-channel power meter, and a 100-watt nominal AR amplifier (10 kHz to 400 … [Read more...]
Key EMC Standards on Avionics Available Online
The Vehicular Electronics Laboratory at Clemson University has posted a convenient update on the latest avionics EMC standards on its website. Included are ISO 14302e on “Electromagnetic Compatibility Requirements”, MIL-STD-461F, the “Military Standard for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment”, DO-160F on "Environmental … [Read more...]
Updated Test System Includes New Voltage Spike Requirement of MIL-STD-461F
The Fx-CS106 from EMC Partners is a “plug-and-play extension to its MIG2000-6 test system. This extension updates testing by providing a new waveform that has been defined for all three services and thus replaces the CS06 test that was part of MIL-STD-461C. Its 2/5-µs voltage spike is applicable to single-phase and three-phase AC, as well as DC interfaces. A 2/5- µs can be … [Read more...]
DO-160 Tested Capacitors Target Avionics Applications
AVX HV02-HV06 DIP leaded stack capacitors, SV conformally coated radiated leaded capacitors, and high voltage MLCCs (>/= 1kV) are now available in DO-160 tested versions rendering them suitable for use in flight applications. The typical civilian aircraft is struck by lightning approximately every 1000 flight-time hours, posing a possible threat to increasingly complex and … [Read more...]
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