Electromagnetic Interference (EMI) is always a potential problem with switched-mode power supplies, both AC-DC and DC-DC converters. Modern designs can perform well for emissions and immunity but external connections must still be correct for the best performance. Sometimes, extra filtering is necessary to meet specific application requirements. However, incorrect filter … [Read more...]
EMI Filtering 101: Understanding the Basics
Introduction To start at the very beginning, what is an electrical filter? An electrical filter can be passive, active, analog, or digital. It is a device usually composed of discrete components which can be placed between circuits, networks, or equipment/systems to either emphasize, de-emphasize or control the frequency components of a desired or undesired signal. The term … [Read more...]
5 Steps to Selecting the Right RF Power Amplifier
Introduction You need an RF power amplifier. You have measured the power of your signal and it is not enough. You may even have decided on a power level in Watts that you think will meet your needs. Are you ready to shop for an amplifier of that wattage? With so many variations in price, size, and efficiency for amplifiers that are all rated at the same number of Watts, many … [Read more...]
A.H. Systems Free Product Catalog
Among the many antennas, probes, preamplifiers, etc. that we sell, the AK-40G Antenna Kit is arguably the most popular. In one convenient package, the AK-40G Antenna Kit provides all the reliable antennas, current probes, and accessories needed to satisfy many customer compliance testing requirements. For more information on the AK-40G Antenna Kit, or a look at A.H. Systems’ … [Read more...]
SteppIR Announces New SY3-EMC Radiated Susceptibility Antenna
New System Provides Automated Tuning Solution to Stringent MIL-STD-461G Testing Requirements NEW ORLEANS (Marketwired – July 22, 2019) – SteppIR Communication Systems, a global provider of EMC testing equipment, today announced at EMC+SIPI 2019 Conference in New Orleans, Louisiana, the launch of the company’s new SY3-EMC EMC testing system. This is the first antenna on the … [Read more...]
Würth Elektronik eiSos and Infineon: Joint development kit 760308EMP for Wireless Power Transfer 200-W-WPT
Power Transfer and Data Transmission in One Waldenburg (Germany), 30 October 2018 – Würth Elektronik eiSos and Infineon Technologies AG have jointly brought a development system for wireless power transfer onto the market. Two aspects distinguish this development kit: On the one hand, it serves to develop applications outside the Qi standard up to a power of 200 W. Data can … [Read more...]
White Paper: Electrical Noise Suppression and Common Mode Choke
Sponsored by ITG Electronics At higher frequencies the impedance of a common mode choke becomes an important factor to effectively suppress EMI noise. This paper will discuss common mode noise generators and how it can be suppressed by using a common mode choke; further discussing impedance improvements by using different winding techniques and wire shapes that enhance the … [Read more...]
Unique CEE Connector with Integrated Line Filter for 1-and 3-Phase Applications
Sponsored by Schurter SCHURTER’s innovative FMAD CEE and FMAB CEE connectors, according to IEC 60309, feature a first of its kind integrated line filter for 1- and 3-phase industrial appliances and power distribution applications. The FMAB CEE has cURus approval on versions rated 16 to 30 A at 125/250 VAC. The FMAD CEE has cURus approval on versions 16 to 32 A at 277/480 … [Read more...]
Exclusive Product Info: Spacesaving Quadpack High-performance EMI Filter Panel
10 inches narrower and 20 pounds lighter than a standard 4x60/100 amp filter panel, with no reduction in performance or quality. Designed for secure shipping containers, shielded rooms, military facilities, SCIFs, and any application where space is at a premium. Get the spec sheet today. Fill out the form to download now. Please complete the form. … [Read more...]
Shielding Effectiveness of Expanded Metal Foils (EMFs)
Sponsored by Dexmet Proper circuit design and component layout can minimize EMC issues, but additional shielding measures are often necessary. This might entail implementing additional shielding material in and around connector interfaces and around seams and openings in enclosures. Expanded metal foil (EMF) is a versatile and effective EMI shielding material that can be … [Read more...]
