EMI filters modules from Foster Transformer are available with optional surge suppression. These devices can be mounted with ¼-inch quick connect terminals, a feature that allows them to be used wherever needed for EMI suppression—even in multiple locations within one piece of equipment. The fully encapsulated construction of these device complies with EN 133200 and UL 1283, … [Read more...]
Company Introduces TVS Diode Arrays with the Highest ESD Protection Level Available
Packaged in miniature SOT23, SOT143 and SC70 (SMD) these ESD TVS diodes are ideally suited for space sensitive applications requiring contact discharge protection as high as 30kV when tested to IEC61000-4-2 International Standards. OnChip Devices, a manufacturer of Integrated Passive Devices, has introduced a family of miniature TVS diodes with very high protection levels … [Read more...]
Optic Rotary Encoder Targets Applications in MRI Units and Other Extreme EM Environments
The TD5207 from Micronor, a non-metallic fiber optic rotary encoder, has been designed especially for use in motion control systems operating in extreme electromagnetic fields. Medical diagnostic and research applications include MRI (magnetic research imaging) or NMR (nuclear magnetic resonance) tomography imaging systems. The encoder also serves as the control feedback … [Read more...]
DIN-Rail Mounted Filters Protect Against Surges and Voltage Transients
The new STFE Elite Series of Active Tracking® filters from SolaHD mount directly on standard DIN rails. They have been crafted to provide superior protection from the full spectrum of voltage transients and surges that may impair operation of control panels, factory automation systems, PLCs, and other industrial and machine tool equipment. These filters combine a hybrid … [Read more...]
Navy Plans to Buy EMI Shielded Cabinets
The Naval Surface Warfare Center, Panama City Division intends to purchase a number of EMI shielded, shock qualified equipment cabinets with two independent 235 CFM cooling fans, mounted in the top rear of the cabinet with the intake in the bottom. The cabinets will require EMI air filters on the intake and outflow. The cabinets must be certified to MIL-STD-461E, shipboard … [Read more...]
Active Filter Protects DC-DC Converters in Harsh Electrical Environments.
The DSF500 from XP Power is a 500-W active filter unit for use in harsh electrical environments. It has been crafted to protect DC-DC converters from the surges, spikes, and ripples that are typically found within the electrical system of any military platform—such as aircraft or vehicles. This filter complies with MIL-STD 1275A-D without the incorporation of any additional … [Read more...]
Navy Plans to Buy EMI Shielded Cabinets
The Naval Surface Warfare Center, Panama City Division intends to purchase a number of EMI shielded, shock qualified equipment cabinets with two independent 235 CFM cooling fans, mounted in the top rear of the cabinet with the intake in the bottom. The cabinets will require EMI air filters on the intake and outflow. The cabinets must be certified to MIL-STD-461E, shipboard … [Read more...]
Filter Connectors Designed With Multilayer Varistor Arrays
Affordable transient protection is now available within electronic connectors Chris Noade, Syfer Technology Limited Arminghall, Norwich UK "Connectors contribute nothing to electronic equipment" is an old and contentious statement that raised a few hackles when written, but is now undisputedly outdated and wrong! A modern connector, in isolation, can fulfill the equipment … [Read more...]
IEEE Publishes Guide for the Application of SPDs for Lower Power AC Power Circuits
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...]
New Standards on EMC Requirements for Welding Equipment
The International Electrotechnical Commission (IEC) has issued IEC 60974-10 Ed. 2.0 (2007-08) entitled "Arc welding equipment - Part 10: Electromagnetic compatibility (EMC) requirements." This document specifies applicable standards and test methods for radio-frequency for harmonic current emission, voltage fluctuations, and flicker. Immunity requirements and test methods … [Read more...]
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