w. michael king

Myth vs. Reality: The Performance of Shields

The myth: The representation of shield performance (in dB) as applied to products will...

Myth vs. Reality: Common-Mode Field Transfer – Coupling Between Circuit Boards and Conductive Chassis Structures

This document discusses the myth that digital circuit boards can be isolated from conductive chassis structures, explaining the reality that they are always coupled through distributed capacitance and transmission line effects.

The First Axiom of System-Product Design

The myth: Electromagnetic Compatibility (EMC) performance was initially intended for the realization of system-product...

System-product Response to Electrostatic Discharge Events

The myth: A system-product that successfully complies with the criteria of ESD (IEC-based) Standards...

Systems Response to Electrostatic Discharge: Part 2

Through the referenced research efforts, it has been recognized that the spectral bandwidth of the ESD event, considered as a continuum, is highly dependent on the electrostatic initialization amplitudes that are evident immediately prior to the displacement of the stored energy through the ESD event.

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Systems Response to Electrostatic Discharge: Part 1

This paper discusses the application of ESP impulse waveform research results toward understanding the ESD amplitude-waveform dependency of susceptibility responses from systems products and outlines the conceptual aspects of the test methodology required for thorough product evaluation.

Power Line Common-mode Conducted EMI Emission

The myth: Conducted EMI emission profiles are always attributable to conducted currents propagating from...

Digital “Noise” Common-mode Coupling Mechanisms in the Z-Axis

The development of “digital common-mode noise” within circuit devices and subsequently within circuit boards is initially formed by peak over-shoot and under-shoot currents in the power and return planes. The peak currents are attributable to the “cross-conduction” transitions in circuit devices, where the driver literally segments turning “on” before the pull-down drivers turn “off”.

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Practical Engineering: Odds and Ends – Navigating the Nuances of Compliance Engineering

FDA Issues Guidance on Third-Party Review Program

FCC Proposes Fine for Video Doorbell Manufacturer

EMC Bench Notes: Design Review: Beaglebone Black Embedded Processor

Standards Practice: Opt for Reverb Chamber Testing