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What is EMI?
Electromagnetic interference or EMI is an electrical disturbance (interference or noise) in a system due to natural phenomena, low-frequency waves from electromechanical devices or high-frequency waves from ICs and other electronic devices.
total search1451 articles
2003-10-22 Aerodev EMI filters provide high attenuation
Aerodev Electromagnetic Tech Inc. has released its DNF258 series of EMI filters that come with a dual alpha section filter to provide high CM and DM attenuation.
2003-11-03 Aerodev EMI filters have dual alpha section filter
The DNF05-H EMI filter from Aerodev Electromagnetic Tech Inc. features a dual alpha section filter that provides high CM and DM attenuation.
2011-11-09 Accelerate time-to-market using benchtop EMI scans
The use of benchtop very-near-field EMI scanning could facilitate rapid resolution of electromagnetic issues in safety-critical systems design.
1999-11-25 5B series signal conditioning subsystems in RFI/EMI fields
This paper deals with the 5B series signal conditioning subsystem that complies with the European Union's electromagnetic compatibility (EMC) directive for use in radio system applications.
2011-04-15 10A switchers offer low EMI
National Semiconductor introduces 12 Simple Switcher power modules, touted to be the first to drive up to 10A of output current.
2008-07-24 XPLA3 I/O cell characteristics
This paper describes the features and benefits of the I/O cells provided by Xilinx CoolRunner XPLA CPLDs.
2008-07-17 Wideband filter quashes noise on DisplayPort links
TDK Corp. announced that it has developed a wideband thin-film common mode filter for EMI suppression on DisplayPort interfaces, an industry first. It is designed specifically to suppress noise on DisplayPort connections.
2006-12-18 VNAs address RF measurement challenges
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2006-05-09 Vishay unveils three new products
Vishay has released three new productsa SMD aluminum capacitor, a white MiniLED and EMI filter arrays.
2013-04-10 Vishay rolls film snubber capacitor for direct IGBT mounting
The MKP386M features a wide capacitance range from 047 to 10?F, high-temperature operation to 105C, and seven voltage ratings from 700 VDC to 2500 VDC and 420 VAC to 800 VAC.
2000-09-27 VFIR: The roadmap for IrDA
The groundwork for VFIR has been laid with high-speed extensions to IrPHY and IrLAP. These changes are backward compatible and are designed for easy migration from FIR. It also ensures that the stack will not be a bottleneck as hardware speed increases.
2006-10-02 Vent panels eliminate costly frame designs
Laird Technologies' new MaxAir vent panels provide greater airflow and EMI protection for electronic enclosures and cabinets used in the military and telecommunications industries.
2001-07-16 Validate EMC design rules with 3D simulation
This article provides an overview of EMC- and 3D-analysis tool capabilities that can enhance an your design's performance.
2015-05-20 Using plastic waveguides for future comm networks
Here's a look at a multi-gigabit communication link using a plastic fibre as transmission channel. It is developed by the KU Leuven ESAT-MICAS research group in Belgium.
2004-12-16 Using cost-effective PWM controller for small power-offline apps
The article presents the development of a new PWM power-supply controller IC for universal input and low-power applications.
2003-09-01 Using automatic Emscan in high-speed PCB design
Emscan claims that its system provides an efficient way of evaluating the replacement component's usability, reducing production cost without any compromise to EMI integrity.
2012-03-09 USB Isolators boast level 4 ESD protection
The Ulinx UHR401 and UHR402 feature 15kV air and 8kV contact ESD protection, and 4kV isolation between upstream and downstream USB ports.
2002-05-14 Updating from user regulated proportional HVPS to UltraVolt's off-the-shelf regulated HVPS
This application note illustrates the advantages of using UltraVolt's of off-the-shelf regulated HVPS, incorporating internal regulation circuitry.
2005-06-16 Understand essentials in high-speed PCB designs
Learn the considerations regarding signal integrity and the preparations necessary in the design of high-speed PCBs
2009-03-03 Tyco unleashes cabling system's new version
Tyco Electronics Corp. has announced a new version of the AMP Netconnect MRJ21 cabling system with optimized performance in environments such as today’s enterprise data centers that are sensitive to EMI.
2007-12-17 Trends to consider when choosing tools
There are many factors to consider during PCB evaluation. Sylvia Teo of Mentor Graphics discusses how to address the challenges in PCB design and what factors must be considered when evaluating a PCB design tool.
2005-03-24 Transformer targets medical apps
Signal Transformer expanded its M4L series of international power isolation transformers to include the 450VA rated M4L-1-4, M4L-2-4, and M4L-3-4 devices.
2001-08-16 The ramifications of component selection
Need to know what is the most important electrical specification for a connector or IC package? This article looks at what is generally the hardest problem in component selection.
2014-06-23 The lowdown on batteries: Zinc/silver-oxide
This battery is known for its high energy density and flat discharge curve. It has found use as a backup power source in the space industry, as well as for the military in some specialty areas.
2014-05-26 The lowdown on batteries: Lithium thionyl chloride
This technology has limited emissions even under abusive conditions, unlike other battery technologies using liquids that produce a gas by-product. Unfortunately, the electrolyte is toxic and reacts with water.
2002-01-01 The difference a differential signal makes
This technical article describes the advantages of employing differential-mode signal propagation over single-ended ones in a wire communications medium.
2004-08-02 Testing SoC interconnects using boundary scan
Delay violations occurring in the interconnects of high-speed SoCs can be tested using JTAG boundary scan architecture.
2004-02-02 Test EMC using novel time-domain methods
This article covers new ways of signal processing to use time-domain measurement techniques to perform accurate and time efficient EMI measurements.
2010-02-21 Test
Electronic products sometimes fail EMC just before they can hit the shelves. You can avoid the cost of redesign and device recall, and product launch delay with "pre-compliance."
2001-01-01 Techniques for handling electromagnetic interference
This technology article focuses on the primary steps that engineers can take at the PCB level to control common-mode radiated EMI.
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