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 – November 2022 (#411-414)

It has been reported widely in the Japanese press that electromagnetic interference caused by illegally modified transceivers on trucks is suspected of causing two accidents by disabling the braking system of commuter buses.

Banana Skins

Banana Skins – November 2022 (#404-410)

The Japanese National Institute of Technology and Evaluation has announced that they have confirmed that some of the household electrical heaters available in Japan malfunction when subjected to electrical disturbances.

Cabling and Connectivity

Getting the Best EMC from Shielded Cables Up to 2.8 GHz, Part 2

Part 2 of this article summarizes the results of recent testing conducted by the author on the shielding effectiveness of screened cables up to 2.8 GHz.

Banana Skins

Banana Skins – October 2022 (#397-403)

During the testing of one aircraft, we suffered a very marked and complete electrical failure of the aircraft (much to the alarm of both the test engineers and the cockpit crew) which turned out to be due to the EUT we were testing.

Cabling and Connectivity

Getting the Best EMC from Shielded Cables Up to 2.8 GHz, Part 1

Part 1 of this two-part article explores some basic rules for terminating cable shields. Part 2 of the article will appear in our October 2022 issue and will summarize the results of recent testing conducted by the author on the shielding effectiveness of screened cables up to 2.8 GHz

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