Equipment failure resulting from TOVs can be reduced by proper coordination of the line fuse and MOV. Philip F. Keebler, Kermit O. Phipps and Doni Nastasi EPRI Solutions Knoxville, Texas, USA Real world electrical environments in residential, commercial, and industrial facilities experience the gamut of undervoltage and overvoltage disturbances. Examples of undervoltage … [Read more...]
Telephonics Corporation’s Telecommunications System Passes EMI/TEMPEST Testing
Telephonics Corporation has announced that it has completed all qualification testing of its NetCom-V™ networked telecommunication system. NetCom-V can now enter full-scale production. The qualification test profile, conducted by certified independent testing laboratories included all environmental Military Standard (MIL-STD 810F), electromagnetic interference (MIL-STD 461), … [Read more...]
How to Cut Costs and Improve Lead-times in Circuit Board Shields: Standard EMI Solutions for Custom Designs
Dario Negrini Leader Tech Inc. Tampa, FL Let's face it. If you didn’t have to worry about EMI shielding issues with your circuit board, life would be much simpler. Unfortunately, as product designs continue to shrink in size and as the list of features continues to grow, EMI compliance issues cannot be overlooked. Circuit board shields are one of the best ways to … [Read more...]
2006 Update on Intentional Electromagnetic Interference (EMI)
Dr. William A. Radasky, Ph.D., P.E. Metatech Corporation Introduction Over the past 6 years a substantial number of articles have been written by this author and others identifying the threat and importance of intentional electromagnetic interference (IEMI) [1-5]. Since the publication of the Interference Technology Annual EMC Guide in 2005, work has continued at an … [Read more...]
Concerning Exposure of Workers and the General Public to Electromagnetic Fields
Keith G. Richens Cranage EMC & Safety Oakley, Shropshire, UK Introduction Electromagnetic fields (EMF) are universally present in the everyday environment, including workplaces and public areas. Measurements are made to identify and characterise them to ensure that people are not exposed to fields that could potentially cause injury or adversely affect … [Read more...]
Measuring and Managing Electromagnetic Interference: Selecting the Right Antenna for Your E3 Program
Philip F. Keebler and Kermit O. Phipps EPRI Solutions, Knoxville, TN Bradford R. Connatser WriteNow Communication, Knoxville, TN Introduction What is an E3 program? Outside of the military environment, the National Aeronautical Space Administration (NASA), and the telecommunication industry, the study of electromagnetic environmental effects (E3) and spectral management … [Read more...]
Options for North American Product Compliance
Jack Black D.L.S. Electronic Systems, Inc. Wheeling, IL Manufacturers and distributors of electronic and electrical devices are required to meet various product safety and EMC standards established by the United States and Canada. They may be asked to show proof of compliance for these products by residential and workplace end-users. Today, there are multiple options for … [Read more...]
Fibrous Dust Testing – Genesis and Successful Reproduction of a Menace
Testing services and equipment are now available to analyze designs for fibrous dust susceptibility. Dan Willemin Professional Testing Incorporated, Round Rock, TX, USA Accumulations of dusts have always hampered cooling, to some extent, but dusts and electronics cooling problems of the past usually involved industrial or military applications. To understand why dust has … [Read more...]
Developments in Lightning Testing Standards for Aircraft Avionics
Test standards are running behind the fast pace of technological change. Nicholas Wright EMC-Partner, Laufen, Switzerland INTRODUCTION Escalating costs and increasing complexity in modern aircraft has ensured that aircraft design and assembly is now a global phenomena. Today, subsystems can be designed, manufactured, and tested at any location around the world, then … [Read more...]
EMC Management and Design in Military and Aerospace Systems—Avoiding the Pitfalls
A systematic approach to EMC engineering and management is the best way of achieving compliance. A.S. De Beer, Ph.D Ruphus Technologies (Pty) Ltd., Lonehill, South Africa ABSTRACT This article focuses on the necessity of following a systematic engineering approach in the design and testing of military and aerospace systems that must comply with stringent EMC Standards. It … [Read more...]
