Legacy archive & EMC knowledge resource
Donald N. Heirman, 1940-2020
Don Heirman shaped the electromagnetic compatibility (EMC) standards the electronics industry relies on today: he chaired CISPR, ANSI ASC C63, and the IEC Advisory Committee on EMC, and served as president of the IEEE EMC Society and the IEEE Standards Association.
This site preserves his professional legacy and continues its educational mission with plain-English guides to the EMC standards he helped build.
The archive
Preserved from the original donheirman.com (online 1998-2021), the website of Don HEIRMAN Consultants.
Biography
His path from Purdue and Bell Labs to the chairmanship of the world's leading EMC standards bodies.
Publications
His archived publication record, 1973-2018: papers, standards, and conference workshops.
Seminars (archived)
The EMC workshops he taught, from CISPR 32 fundamentals to corporate compliance strategy.
Industry Links
The EMC standards organizations he worked with, updated and annotated.
EMC standards, explained
Plain-English guides for engineers, compliance professionals, and students.
Latest articles
All articlesAug 11, 2026
CISPR 22 vs CISPR 32: What Changed and Why It Matters
How CISPR 32 replaced CISPR 22 and CISPR 13 for multimedia equipment: the 2012-2017 transition timeline, scope merge, and the practical differences for testing.
Aug 11, 2026
FCC Class A vs Class B: Which Limits Apply to Your Product
FCC Class B applies to devices marketed for homes, Class A to commercial environments. Compare the Section 15.109 limits, labeling statements and common mistakes.
Aug 11, 2026
What Is a LISN and Why Conducted Emissions Testing Needs One
A LISN (line impedance stabilization network) gives conducted emission tests a defined 50 ohm/50 uH impedance, blocks grid noise and provides the measurement port.
donheirman.com is an independent memorial and educational project. It is not affiliated with the Heirman family, IEEE, ANSI, or IEC, and offers no consulting services. Read about this site.