emc

How can the EMI/EMC community continue to blame this accident on electromagnetic interference (EMI) from the USS Forrestal’s on-board AN-SPS-43 search radar when the official US Navy inquiry comes to different conclusions?

This series of articles delves into the design principles of power filters for switched-mode power converters and similar applications, focusing on conducted and radiated emissions. Part 2 will examine specific aspects of switched power converters.

Advanced Test Equipment Corp (ATEC), a leading provider of test and measurement equipment rentals, has been recognized by the Institute of Electrical and Electronics Engineers (IEEE) for its exceptional contributions to the Electromagnetic Compatibility (EMC) Society. This prestigious award highlights ATEC’s unwavering commitment to advancing EMC testing, industry education, and regulatory compliance. 

This article explores S₂₁ parameter methods for measuring capacitor impedance. Comparing two-port shunt and series techniques with established benchmarks reveals the two-port shunt method delivers superior accuracy across multiple capacitor values and frequency ranges.

The evolution of HIRF (High Intensity Radio Frequency) testing standards was driven by "fly-by-wire" aircraft vulnerabilities. From 1989, test requirements jumped dramatically from 1-2 V/m to 200 V/m, prompting extensive research and new guidelines for protecting aviation electronics.

In 1967, one of the U.S. Navy's worst peacetime disasters occurred aboard the USS Forrestal aircraft carrier off Vietnam's coast. A weapon misfire triggered a devastating chain of explosions and fires, resulting in hundreds of casualties and nearly destroying the ship.

Explore essential strategies for EMC testing of electric axles in automotive applications. This technical guide examines key challenges in achieving CISPR 25 compliance, from test bench design to managing metallic structures, while ensuring accurate and reproducible measurements for high-power e-drive systems.

This is the third and final article discussing four different circuit models of transmission lines in sinusoidal steady state. This article uses Model 4 to determine the locations of the minima and maxima of standing waves. This determination is first done analytically, followed by the graphical method using the Smith chart.

The month's Banana Skins covers various electromagnetic interference issues in different contexts. It discusses problems with video projectors affecting audio induction loops, switch-mode power supply emissions varying with voltage, hybrid vehicle EM emissions, computer interference with amateur radio, electrostatic discharge in fluid lines, and communication equipment in ambulances causing radio interference.

Understanding current flow patterns is crucial in EMC engineering, particularly the distinction between Common Mode and Differential Mode currents. Controlling current paths and providing local return paths helps reduce electromagnetic interference and improve immunity.