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Interference Technology

For EMI / EMC Engineers

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Printed Circuit Board Type AC-DC Power Supplies

 

TDK-Lambda Corporation has developed the “ZWS-B” series printed circuit board type AC-DC power supplies. The “ZWS-B” series features reduced internal losses and smaller size (up to 38% smaller as compared with existing models) by adopting a simple circuit design, without harmonic current suppression circuitry.Learn more from TDK-Lambda. … [Read more...]

Multi-Tone RF Test System Tests Reduces Radiated Immunity Testing Time

 

AR RF/Microwave Instrumentation is introducing a new Multi- tone RF Test System, model MT06000 (80 MHz – 6 GHz), includes all the necessary instruments to perform radiated immunity testing per IEC 61000-4-3 except the required amplifiers, antennas and directional couplers. Amplifiers are selected and sized based on your required field levels and testing needs.The system mimics … [Read more...]

Focus on ETS-Lindgren

 

ETS-Lindgren Supports OTA Testing from 2G to 4G/LTE/MIMO Using Anritsu MT8820C RF Tester ETS-Lindgren Announces EMQuest™ Support of Agilent Technologies PXT Wireless Communications Test Set for LTE Over-the-Air Testing  ETS-Lindgren Shielding Featured in World Class MRI News Report … [Read more...]

Novel Features of Short Pulse Electromagnetics

 

IEEE EMC Society Washington DC/Northern Virginia Chapter Meeting 6:30 p.m. - 8:30 p.m., May 28, 2012 Rhein Tech Laboratories, 360 Herndon Pkwy, #1400, Herndon, VA 20170-4865 Short pulses are inherently ultra-wideband (UWB) and have been the subject of interest for various applications such as wireless communications, high speed data transfer, fast switches, high speed … [Read more...]

Avionics Testing Evolution

 

Nicholas Wright, EMC Partner AG, Laufen, Switzerland Many disturbance sources can affect the correct functioning and therefore the safety of an aircraft. The latest commercial airliner designs include many technological changes that have necessitated a review of avionic system test requirements. The trend today is to move toward structures made from Carbon Fiber Reinforced … [Read more...]

Protecting Security Systems in a Healthcare Facility from Lightning Induced Transients

 

A healthcare facility is a multifunctional building or campus that provides health care to citizens and when designated, also provides protection to the population in times of crisis. This includes common functions associated with patient care (e.g. operating rooms, emergency rooms, recovery rooms, etc), but also areas for educational centers, exercise facilities, food service, … [Read more...]

Simple Method for Predicting a Cable Shielding Factor, Based on Transfer Impedance

 

For a shielded cable, an approximate relationship valid from few kHz up to the first cable resonance can be derived from its Transfer Impedance (Zt) allowing to predict the cable shielding factor. This Cable Shielding factor, as a figure of merit, is often preferred by engineers dealing with product specifications and early design. Being not necessarily EMC specialists, they … [Read more...]

Shortcomings of Simple EMC Filters

 

Oversimplification of EMC filter selection to reduce size and cost can often be a false economy as anticipated performance may not be achieved. INTRODUCTION EMC design principles are best considered at the equipment design stage, where good mechanical design including component layout and cable routing can help reduce EMC problems at source. Even with good EMC practice, it is … [Read more...]

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