Thanks. I have the test equipment and I appreciate your knowledge in applying them.

Great demonstration. Could using solder sleeves on test cables produce similar results ?

This is an excellent demonstration, great job!

And this happens already in MHz range.. There are some GHz designs out there, where the return path under the clock is interfered with other traces and power planes (so not technically a gap). I myself did also some 200MHz traces on a PCB, where the GND underneath wasn't so clean and had a big issue with crosstalk and radiated emissions. Very nice demonstration, thank you :)

Awesome presentation. Could kind of use a secondary audio channel where a CTF programmer is trying to perform time slip attacks (shout outs to Dr. Amy H. Sturgis via Starship Sofa via Podcast Addict,) on low level comms or Vacuum 11.

Excellent video!!! I love the use of current probes to demonstrate the radiated energy. Thank you for this.

Well, this was great! Thank you for your videos, this is extremely useful for me, as I'm investigating ultra low noise techniques for an upcoming project.

With a 3D printer frame and the equipment hooked up to a computer, one can script a scan across the PCB and visualize the H field in 3D space. Wish I had one to hack it.

At 2:26, you can see the analyzer pick up emissions when the gapped line is plugged in.

Thanks for the nice video. I moved into a new building at work several years back and was amazed at how much RF interference there was in the building. There are about 25 FM broadcast stations in my area, and inside the building, I could receive exactly 2. The rest was noise from the high efficiency ceiling lights that used SMPS in their "ballasts". Fortunately for those outside the building, we also had energy efficient glass windows for walls that were metalized and attenuated VHF/UHF EM emissions by 30 dB. That had some effect on the FM station reception, but most was an increase in the received noise floor of around 60 dB. Sure would be nice if someone could design clean SMPS electronics - or come up with a new technology to replace them. Probably a Nobel prize in there somewhere ;-)

Love it. I ordered one of these so I might be able to get my son interested in science.

Excellent video! The best way to understand this material is to do it or watch someone do it. Thank you very much for making this video and focusing so well on the topic at hand.

Great demo. Would be curious to see common mode currents explained in more detail

i addition with the help of this current probe you can find point of maximum current on the cable, this will be the point where its more efficient to put common mode choke

I test with Van dr Graaf generator sparks

Those spark generators were a real problem back in the 1980s and 90s. The kids would use them to freak out the arcade machines causing them to empty their hoppers, rack up free credits or simply destroy most of the internal logic boards.

That's not ESD though, none of the things in the video are generating ESD pulses. All this is EMI which is another thing you have to worry about, but still unrelated to *static* electricity.

Very nice technique, similar to the one used by Jagadish Bose in the 1890's to generate signals over 100 GHz!

Дуже цікаве відео. Якраз читаю книжку К. Ротхамеля "Антени".

Thanks for the great video and thanks to the algorithm for helping me find you. I’m going to be binging your content

Thanks Ken!

Thanks for the detailed demonstration. We may use a massive gnd plane and heavy Rf shield for any circuits to easyli call or work correct. It allways had an antenna or loop somewhere, or at some point needed to slove the low inductance/high current phats/return phats. So its like a esential thing to know and not only for an RF guy.

Nice demonstration!

Really interesting video. Thanks for sharing.

Nice clear video, thank you very much 😃

Very well explained the need of Uniform Ref Plane, hope more this type of demonstration vedios will come.

neat!

Seems like the size of the antenna on the o-scope would also be influencing the spectral content of the received signals...

would like to see more of these videos

great video, thanks for it!

How much for the duo (spectrum analyzer and the current probe)?

Please make more videos! They’re great : )

Use a VNWA as well, get one if you don’t have one. Mine did cost 280€ and reaches 4,6 GHz

Wow. I didn't know that. And the demo really hammers the point home!

The energy is in the fields, very good demonstration.

Ken, this is a great demo. I'll be showing this to all of the people that ask me about high speed design.

Now if you could bridge that gap with a two wire links, one each side of the wire, it will be interesting to see how much performance is recovered.

This is exactly what we run into sometimes with noisy LED lighting. I wonder if there are any good ways to suppress this RFI when ferrite is ineffective.

Hi Ken, if any custom PCBs may help for upcoming content? Would like to sponsor! (PCBWay zoey)

I love your videos Ken! I would love to see the prob positioned before and after the ferrite bead. I wonder how ferrite beads influence the noise?

Thank you for this demo! It's really comprehensive while still being simple and easy to understand.

I had not seen the dipole setup before, it's quite intriguing. I'd really like to find out how exactly that works. You could also use coins in a ziploc bag as an esd source.

Another amazing demonstration, could do with some additional explanation as to exactly why the dipole setup behaves the way it does

Very interesting video. Can you share more information about the 10 MHz harmonic comb generator? It looks like a small handy tool for RF testing.

Wow, this is how electronic engineering should be taught

Excellent!

Great knowledge. Thanks for good and detailed teaching

I have never seen this stuff so well explained. Usually it’s just explained as magic and people wave their hands. You clearly understand what is going on. When you routed around the gap and showed where the current was going my mind was blown.

Do you thik this kind of ringing can be eliminated / reduced by a simple RC snubber connected to the switching node?

Really great demonstration! I can't wait to see more.