Emc research portland11/9/2023 ![]() Ferrite is not a 100% inductive component.For high-speed design, PCB designers really need to understand how the wave propagates.70% of the EMI issues are somehow related to resonance.Min shares a recent video he did with Robert Feranec which discusses the topic of EMI troubleshooting on immunity.Shielding is a good solution, but understanding fundamentals are necessary to avoid increased cost, weight, and also the bending ratio would be affected.How to deal with cables connected to another system that is outside of the shielding?.He continues with his answer with an example involving a three-phase brushless DC motor drive.Min answers by recommending Rick Hartley's famous YouTube video about grounding.What happens when EMI problems exist off the board and they interfere with the system or create so much noise that the system is never going to pass EMC?.Min’s recommendation to design engineers solving EMI issues is to understand the fundamentals – “only when you understand the fundamentals, understand the basics, and the first principle, then you can really design a system” - Min Zhang.It was his first time seeing a step-by-step diagnosis and troubleshooting EMI issues - checking the grounding, checking the bonding, and applying ferrites at the right place, performed by his friend’s father who was then a principal engineer in the European Space Agency.Min recalls being fascinated by his first time seeing an EMI diagnosis kit composed of the spectrum analyzer, lots of ferrites, and cable shooting copper tape in a suitcase.The university he went to specializes in motor and power converter design, but did not offer any solutions in fixing the EMI issues.The lack of education in the university in regards to EMI issues is one of the reasons that sparked Min’s interest in EMI.His first experience dealing with EMI issues was at the university while doing research for his PhD.He started his engineering consulting business, Mach One Design EMC Consultants 2 years ago.Earlier in his career, he worked with big companies as a motor drive engineer and power electronics design engineer for 10 years.Let’s hear more about Min’s background and his early exposure to EMI issues.It will be a very interesting discussion because we will look a little bit deeper at the system level.ĭownload this episode (right-click and save) Today, we'll be talking about EMC, both on board and off the board. Min is an independent EMC consultant based in the UK. ![]() We are very delighted to have Min Zhang in this episode.
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