Learn To Fix EMC Problems Easily And In Your Lab - Troubleshooting Immunity Issue | Min Zhang
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- Опубликовано: 25 апр 2024
- Step by step explaining, debugging and fixing EMC immunity issue. Thank you very much Min Zhang
Links:
- Min's Company: mach1design.co.uk/
- PDF presentation from this video: mach1design.co.uk/a-radiated-...
- Min's EMC Online course: mach1design-shop.fedevel.educ...
Chapters:
00:00 What is this video about
00:54 The EMC immunity problem explained
04:00 EMC Immunity test
08:38 EMC Conducted & Radiated immunity tests
11:47 EFT and ESD tests
13:51 EMC immunity test setup
23:40 Testing and finding where the problem is
32:00 Analyzing the problems
45:12 Proving the problem - measuring at the critical places
1:02:44 FIX Attempt 1 - Add more decoupling capacitors
1:08:01 FIX Attempt 2 - Creating additional connection to GND
1:09:57 FIX Attempt 3 - RC bonding
1:14:01 FIX Attempt 4 - Shielding
1:19:15 FIX Attempt 5 - Absorber sheet
1:23:02 The FIX - Ferrite plates
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It is much appreciated. Thank you,
- Robert
Min again demonstrated a classic troubleshooting process. The only issue is that I need to get my notebook and pencil out for this video! Thanks Robert for this amazing video. Keep up with the good work!
The solution of using ferrite plates is very clever. I think that this video could be a part of a paid course: thanks for the time spent in creating it
Hey, thanks for hooking us up with those industry experts for all the electronics enthusiasts out there. And big props for sharing their awesome content through those topic-specific calls. But you know what's really surprising? Only a measly 2% of people actually liked it out of all the views. Can you believe that?
Very good content Robert. Dr Min is very knowledgeable and have combined the theory and practicality in a most precise and acceptable approach both in the parts of assembly house and the company. Cheers! More to videos like this with real life troubleshooting. I am back in this job and think I need to attend a refresher on the course that Dr Min has.
Thank you Robert and Min!
Excellent 👍🙏
Excellent video!
Thanks so much for these videos. I'm designing a hobby project that was going to have 40 amps of 48v power with a power rail at the top and a ground at the bottom of a 160mm wide 400mm long board (eurocard backplane). After watching your videos I realised how horrifically bad an idea that was lol. It's now got power and ground interleaved on the connectors all at the top of the connectors with a multiple power and ground planes on a 6 layer board :-)
-Its 3:20 AM here and I continued to watch this video.very very interesting and useful. actually I relate to most of the things that has been said in this video.Thanks for providing such content.
Thank you so much for explaining these emc troubleshooting and emc phenomenon to us🎉 I am newbie and encounter these situations in my smps !
Superb content! Seeing the approaches that didn't succeed, and their relative performance is VERY helpful as well as seeing what did succeed.
All the best! Robert and Min. 👏👏
Very interesting topic. So much is said about reducing EM emissions it is easy to forget about the immunity testing side of the problem, and how to design boards to avoid immunity problems.
Thanks Nicholas, indeed, I think one of the reasons that immunity has become more prevalent is the use of low voltage power architecture. For instance, 3.3V is far more susceptible to noise compared with a 5V system. We also have more and more noisy emitters in our working environment and home environment, certainly challenging times.
Awesome! I really like the video, very useful, thank you both very much. Min, you have done amazing job on the EMC, WOW !
Many thanks Lin Qiang.
Wouldn't separating two boards much further apart solve the problem? What effect would it have?
Great video! thanks for sharing.
thank you
youre so so much more knowledgable than those people you conference with
good content‘thanks
Thank you so much for these videos, I have learned a lot.
Just a suggestion: if possible, can you break these videos into two parts.
Not sure if anyone else has the same problem as me but it's kinda hard to keep track of all the content after an hour or so.
It works for sharing.
_Learn To Fix EMC Problems Easily And In Your Lab_ , Nice 'Thanks for sharing. Sending full support. Done :)
If you design another two layer pcb under the daughterCard with the exact dimensions of holes and connect it to ground pin in order to perform a solid ground plane, will it make the performance better?
Any more courses by Min is going to come??
Thanks. Yes, we are working on a 5-hour course focusing on EMC tests and perhaps another course focusing on switched mode power supply, please stay tuned. All the very best
@@MachOneDesignEMC any timeline? When you are going to publish?
Can any one explain about the connection between dv/dt and energy from ESD test..
Hi, check a normal ESD discharge current waveform, you will see the current rise time is about 500ps to a few nanoseconds, to achieve this, a high voltage such as 4kV needs to be built, then you can see the high dV/dt related to an ESD event.
Hi sir
How do simulation for giga bit ethernet differential pair signals?
These are PAM5 coded signals that are analog ...how to do simulation ?
Hoping for the reply,🤞
This is more related to signal integrity, I would suggest you read Eric Bogatin's book
@@MachOneDesignEMC thank you for the response, I do follow Eric boggatin book but I want information regarding Analog IO simulation (4 differential AIO pairs of gigabit ethernet is connected to Transformer then to RJ45 connector) ..is it possible to do simulation for analog iO and how we can practice ?
Why nobody in the world is not talking about EFT & Surge? No practical demonstration.
Everyone is talking about only radiated and conducted emissions.
Are they (EMC troubleshoot engineers) playing safely?
I know "sometimes" good PCB design will solve the EFT problem but not always. Happy that here you started with EFT, but please do some lessons for surge also.
Please do something above 100v.
Yeah sure, as we mentioned in the video, there will definitely be more discussions on EFT and ESD in the future. Many thanks for your feedback, we appreciated it.
Looks too complicated...
"I don't want to complicate tNice tutorials video" I was out from the first second
This channel has become an ads channel.
It takes a lot of time and it actually cost me money to create free content. I need some money to live from + I need some money to create place which will be helping people to learn and get better in their jobs or to get better jobs. Please keep in mind, it costs a lot of money to build something great. Plus, don't forget many of my guests are very busy people and are very careful about their time and they also need to get something back when their share their time and knowledge with you. I am open to hear your suggestions on how to get this money and I am very happy to receive your donations to help me to create free videos with pure content only. I would love to do that, I don't like marketing nor advertisement.
@@RobertFeranec Hey mate, nothing you do will satisfy everyone. I have learnt so much watching your videos. You keep asking the presenters the questions I want to ask :-)
No it hasn’t.