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Keith Armstrong

After working as an electronic designer, then project manager and design department manager, Keith started Cherry Clough Consultants in 1990 to help companies reduce financial risks and project timescales through the use of proven good EMC engineering practices. Over the last 20 years, Keith has presented many papers, demonstrations, and training courses on good EMC engineering techniques and on EMC for Functional Safety, worldwide, and also written very many articles on these topics. He chairs the IET’s Working Group on EMC for Functional Safety, and is the UK Government’s appointed expert to the IEC committees working on 61000-1-2 (EMC & Functional Safety), 60601-1-2 (EMC for Medical Devices), and 61000-6-7 (Generic standard on EMC & Functional Safety).

From This Author

Banana Skins

Banana Skins – August 2021 (#347-353)

Cellular telephones can interfere with medical equipment – Mayo Clinic concludes
Banana Skins

Banana Skins – July 2021 (#342-346)

Major news outlets in the Philadelphia metropolitan area report that the head of the city’s Fraternal Order of Police (FOP) has called on city officials to replace the two-and-a-half year old Motorola police radio system because of repeated communications failures.
Banana Skins

Banana Skins – June 2021 (#333-341)

The rear-screen heater in my BMW 3-Series causes so much interference when switched on that it’s impossible to listen to the car radio.
Banana Skins

Banana Skins – May 2021 (#330-332)

Chris van Rossman of Corvallis Oregon turned on his do-everything combo TV and got a big surprise—the police, the Civil Air Patrol, and the County Search and Rescue Officers knocked on his door.
Banana Skins

Banana Skins – March 2021 (#322-329)

We are all aware of TVs and radios being affected by vacuum cleaners, food mixers, mobile phones, and the like...
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Banana Skins

Banana Skins – February 2021 (#316-321)

A number of people who had been enjoying weightless activities in the non-spinning central hub of Virgin Space Ltd’s newest hotel “Arthur C Clarke III” found themselves trapped on the ‘ceiling’ for 15 minutes...
Banana Skins

Banana Skins – January 2021 (#307-315)

Typically, regular voltage quality spot checks are made throughout a local distribution system with additional measurements taken when a customer asks; is there a voltage problem?
Design

EMC and Safety for Installations: Part 2

In Part 2 of this two-part article, we’ll discuss the development and use of isolated bonding networks (IBNs).
Banana Skins

Banana Skins – November 2020 (#295-301)

We are proud to carry on the tradition of sharing Banana Skins for the purpose of promoting education for EMI/EMC engineers.
Design

EMC and Safety for Installations: Part 1

In Part 1 of this two-part article, we’ll discuss the development of “grounding networks” and the shift to meshed structures to reduce damage from overvoltages. Part 2 will appear in our November 2020 issue.
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