The IEEE Guide for the Application of Surge-Protective Devices for Low Voltage (1000 V or Less) AC Power Circuits (C62.92-2007) provides specifiers and users of surge-protective devices (SPDs) about the application considerations associated with power distribution systems within North America. This guide applies to SPDs to be connected to the local side of the service entrance … [Read more...]
IEC Issues Draft of Amendment on ICs and Measurement of EM Emissions
IEC 61967-6 am1 Ed. 1.0 is entitled "Integrated Circuits - Measurement of Electromagnetic Emissions, 150 kHz to 1 GHz - Part 6: Measurement of conducted emissions - Magnetic probe method." The Final Draft International Standard has the following voting period: 2007-11-30 to 2008-02-01. Purchasers of this draft version will receive the definitive version once it … [Read more...]
Keeping Up With Automotive Standards
For those involved with automotive EMC, here's a quick reminder. SAE (Society of Automotive Engineers) standards are available in paper and convenient CD-Rom versions on the Society website. A detailed list of world automotive standards is on the website of Clemson University's Vehicular Electronics Laboratory. With a few a click of the mouse, you can check out both: SAE or … [Read more...]
Lumera Corporation Wins $2.2 Million U.S. Air Force Contract
Lumera Corp. of Bothell, WA has won a $2.2 million contract from the U.S. Air Force to fabricate low driving-voltage, reliable electro-optic modulators using its proprietary high-performance organic polymers. Utilizing RF photonics, in which optical components and optical fiber are used to process and to distribute high-speed electrical signals, helps provide the high … [Read more...]
X PRIZE to Reward Engineering Innovation with $10 Million Prize
On April 4, in a major announcement at the New York International Auto Show, the X PRIZE Foundation and Progressive Insurance jointly announced the company's title sponsorship of the Progressive Insurance Automotive X PRIZE Competition and its funding of the $10 million purse. The newly renamed prize is an international competition designed to inspire the next generation of … [Read more...]
Chip Ferrite Beads Provide Effective EMI Suppression
The BLM Series of chip ferrite beads from MuRata Manufacturing has been crafted to function nearly as a resistor at noise frequencies--a characteristic that greatly reduces the possibility of resonance and leaves signal waveforms undistorted. This series is effective in circuits without stable ground lines because it does not need a connection to ground. The nickel barrier … [Read more...]
ISO Amended Standard: Road Vehicles & Electrical Disturbance
The International Standards Organization has published ISO 7837-1 Amd 1: 2008 entitled "Road vehicles - Electrical Disturbance by conduction and coupling - Part 2: Commercial vehicles with nominal 24-V supply voltage - Electrical transient conduction along supply lines only - Amendment 1. This new publication amends ISO 7637-2: 2004. For more information, or to purchase this … [Read more...]
IEC Issues Three New EMC Standards on MV, HV, and EHV Power Supplies
The International Electrotechnical Commission (IEC) has issued three new standards on electromagnetic compatibility-specifically IEC 61000-3-6 Ed. 2.0; IEC 61000-3-7 Ed. 2.0; and IEC 61000-3-13 Ed. 1.0. All deal with the assessment of emission limits. The first 6100-3-6 is a technical report, informative in nature that provides guidance on principles that can be used as the … [Read more...]
On-site EMF Testing of an Emergency Network Communications Vehicle
Thorough testing requires taking measurements both inside and outside the vehicle. David A. Case, Jaime McLain and Murry Gavin Cisco Systems, Inc., Richland, Ohio, USA Experienced compliance test personnel are familiar with the usual spate of RF issues. Tasks range from performing MPE (maximum permissible exposure) studies and SAR (specific absorption rate) testing to … [Read more...]
Simulation of In-vehicle Human Exposure to Electromagnetic Fields Due to On-board Transmitters
Numerical models can provide data from an enormous number of points and for a number of human simulants. Alastair R. Ruddle, Ph.D. MIRA Limited, Nuneaton, UK On-board transmitters are already commonly encountered in the vehicle environment: typical examples include mobile telephones, Bluetooth systems, and communications equipment used by the emergency services and armed … [Read more...]
