On August 28, 2013, Keith Armstrong presented a live webinar on “Basics: Grounding, Immunity, Overviews of Emissions and Immunity, and Crosstalk.”

This webinar – number 3 in a series of 3 – describes a simple, easy non-mathematical engineering understanding of the physical underpinning of electromagnetics.

Watch the first and second webinar in this series here.

This understanding leads directly to EMC design techniques that have been proven many times in real-life in many countries to easily:

• reduce time-to-market
• improve product functional performance (i.e. improve SI and PI)
• reduce cost of manufacture and so increase profitability
• reduce warranty costs

– and so save time and money overall  whilst reducing financial risks.

Click here to download a pdf of the presentation.

Question & Answer Session

Question: What did it take to fix the supercomputer immunity?
To view the answer, click here.

Question: Can an LRU (Line Replaceable unit) chassi be grounded through a Pin ground?
To view the answer, click here.

Question: How do you filter out harmonics in a system that’s composed of different supplier units?
To view the answer, click here.

Question: When intra-EMC is served, will inter-EMC be satisfied too ?
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Question: Some OEMs require electrical isolation of a few 1000 volts between high voltage return (HV GND) and low voltage return (LV GND) and this requires a slot or split in the return plane. I know solid plane is recommended, but how do we address this functional requirement of electrical isolation and yet design the proper return plane?
To view the answer, click here.

Question:  Is immunity testing with reverberation chamber more real world testing than the standard single tone testing according to IEC61000-4-3?
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Question: Given the ability of a conducting sheet is proportional to its skin effect, what is the relationship between skin effect and caustic atmosphere such as pollution over time.
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Question: What is most important thing keep in mind to reduce interference frequency difference or power level?
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Question: Which of your books covers conducted immunity 10V/m testing?
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Question: Should power harnesses be shielding?
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Question: Why would a board fail line conducted immunity tested at only 4MHz ?
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