Banana Skins

“Banana Skins” is a collection of anecdotes and reports on interference incidents, from a huge variety of sources, edited by Keith Armstrong of Cherry Clough. It was first published as a column in the EMC Journal (free on-line at in 1998, and to date has over 868 entries, ranging from the downright funny to the seriously worrying.

The first 500 Banana Skins have been embellished with some cartoons and published as a low-cost (about £10) pocket-sized book, perfect for that boss who refuses to believe that EMC is now a significant financial risk issue. To order a copy on-line, visit
The book is also available for free on-line access at - but although you can search them all by topic or EM coupling mode, you can’t download or print out the whole book. If you haven’t already registered with the Compliance Club, itself a very valuable resource, you will be presented with a form to complete. It doesn't take long and you get instant access when you have.

The EMC Journal ceased publication in 2014, but its sites (above) are being maintained as an active archive.

You can download the latest version of the “Compendium of Banana Skins” (nearly 400 A4 pages!) from here.

Banana Skins are also available (as well as a very large amount of valuable practical EMC guidance) from, where they are called “EMI Stories”, and also from, and both of these sites post new Banana Skins / EMI Stories as I find them and write them up

And if you have any anecdotes or reports of EMI, please send them to me at and I’ll see if I can print them. Please tell me if you want your name, position and employer listed, or just your name, or even if you want to remain anonymous!

List of EMC publications NEW (Nov 2006)
Books, magazines, etc.
EMC Awareness A website that introduces EMC techniques by discussing how they relate to some actual interference incidents
Miscellaneous articles

Absence of proof, is not proof of absence, EMCJ Issue 78, September 08
Adding-up Emissions, EMC Journal, November 1997
AES-X13 and interference-free pro-audio systems, 25 Sep 02
Analogue circuit design for RF immunity, EMCJ, Issue 84, Sept 2009
Bench-testing PCBs for immunity, EMC Journal, Issue 92, 10 Jan 2011
BOM cost and profitability, EMCJ, Issue 82, May 09
Bonding cable shields at both ends to reduce noise for EMCJ May 02, PDF version 4 May 02
CE plus CE does not equal CE - what to do instead (for systems and installations)
CE plus CE does not equal CE - what to do instead
Choosing and Using Filters, EMCJ
Designing IOs for ground loops, EMCJ, Issue 83, July 2009
Electronic BSE, EMC Journal, 1998
EMC - good practice makes perfect, Industrial Compliance Magazine, 1 Sep 2008
EMC - Our products are trying to help us, ITEM, 2012
EMC and Signal Integrity, CE magazine, March-April 1999
EMC Directive for Conformity 2009 Annual Guide, 24 Jan 09
EMC fixing using good design practices, 8 May 2013
EMC fixing using good design practices, EMC Journal 8 May 2013
EMCIA's position on PLT, EMCJ, Issue 83, July 09
Getting what you want, EMCJ Issue 77, July 08
Informing the Customer, EMC Journal, 1998
Law vs Reality, EMC Journal, Issue 90, September 2010
Low level of complaints is not evidence of compliance, EMCJ, Issue 84, September 09
Low-cost EMC compliance, 19 May 2015
Maxwells, QED, and good installation practices for SI, PI and EMC, Nov 2010
Murphy's Law, EMCJ Issue 79, November 08
Napoleonic project management, EMCJ, Issue 80, January 09
PCB Design of Gb-s Differential Lines, + graphics, 3 July 06
Procedural TCFs, EMC Journal, February 1998
Procedural TCFs, updated for 2004-10-EC, 2010
Shield current induced noise is negligible, AES, 23 March 03
Signal Integrity and EMC, EMC Journal, April 1998
Suppressing ICs which have BGA packages or multiple DC power rails, 26 Sep 2013
Terminating cable screens, EMCJ, Issue 82, May 2009
When the going gets tough, EMCJ, Issue 81, March 09