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equipment" is an old and contentious statement that raised a few hackles when written, but is now undisputedly outdated and wrong!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...]
Capacitor Series Is Optimized for Military/Aerospace Applications
A new space grade series of capacitors from KEMET Corporation has been crafted especially for use by military/aerospace customers in high-reliability applications. These capacitors meet the requirements for MIL-PRF-55365 as well as MIL-STD 1580. These devices incorporate an intensive testing and screening protocol that can be customized to meet the specific needs of an … [Read more...]
Surge Protection Firm Joins Innovation Network for Warfighter Systems
Transtector Systems has joined the EDGE? Innovation Network, a collaborative, open-environment initiative that allows industry, academia, and government to work together so as to enhance the delivery of technology and innovation to the warfighter. Sponsored by General Dynamics C4 Systems and located in Scottsdale, AZ, the EDGE provides facilities and labs for developing and … [Read more...]
Project IEC 61643-21 am1 Ed.1.0 Covers Performance & Test Methods for LV Surge Protectors
The International Electrotechnical Commission has published the draft of an amendment covering low voltage surge protection devices. The proposed change is titled "Amendment 1 - Low voltage surge protection devices - Performance requirements and testing methods."? This final draft has a voting period February 2, 2008 to April 11, 2008. Purchasers of this draft edition will … [Read more...]
Revision F of DO-160 Issued
DO-160F: Environmental Conditions & Test Procedures for Airborne Equipment was issued on December 6. 2007 and was prepared by RTCA Special Committee 135. This document provides standard procedures and environmental test criteria for testing airborne equipment for the entire spectrum of aircraft from light general aviation aircraft and helicopters through the "Jumbo Jets" … [Read more...]
