August 2022

In This Issue

The August 2022 issue of In Compliance concentrates on EM Interference Control.

NASA Space Shuttle’s Return to Flight
By Brian M. Kent
The 2003 Columbia re-entry accident was caused by a piece of liberated external tank foam that struck and damaged the left leading edge during powered ascent. Computational and experimental electromagnetics were ultimately applied to foster the development of a new NASA Ascent Debris Radar (NDR) for the remaining 22 Shuttle missions. In the process, countless static and dynamic radar signature and EMI/EMC calculations and tests were completed to assure this safety-critical radar system was ready for the return to flight (RTF) missions.

Reducing Battery Life Risk in Mission Critical IoT Devices
By Brad Jolly
The Internet of Things (IoT) is moving into more mission critical applications, especially with connected medical devices. Engineers can reduce the risk of premature battery failure by following the practical methods described in this article.

Common Mode Filter Design Guide
By Leonard Crane
The selection of component values for common mode filters need not be a difficult and confusing process. The use of standard filter alignments can be utilized to achieve a relatively simple and straightforward design process, though such alignments may readily be modified to utilize pre-defined component values.

The Impact of Tin Whisker Formation on Vehicle Electronics
By Michelle Kuykendal, Daniel Kingsley, and Ashish Arora
Tin whiskers are small, hair-like structures that can form naturally from the surface of tin components. This article explores potential contributors to tin whisker growth, failure mechanisms that may be induced by whiskers, current testing standards and processes, and mitigation strategies, with a particular focus on the automotive industry.

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