The Cheapest Near Field EMI Probes from Amazon

The Cheapest Near Field EMI Probes from Amazon
www.pcbway.com/ Get 5 boards in about a week for $27!
I wanted some near field (EMI) probes for my Tiny SA Spectrum Analyzer. But I didn't want to pay $200+ for probes for a $60 tool. A quick search on Amazon turned up this set of 4 for less than $6.
4PCs EMI Near Field Probe Set Near Field Magnetic Field Probe : amzn.to/3Z3DKbe
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HEY YOU ABOUT TO POST SOMETHING STUPID:
Yes, I know my hands are large/fat. It's because of a heart condition I suffer from called Congestive Heart Failure. Here's a link to some information about CHF: cle.clinic/2TdS2Ux
One of the symptoms is that it causes fluid retention, mostly in the hands, feet/ankles, and face..
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Gear I use:
Multimeter: OWON B33+ amzn.to/3UkTJOo
Oscilloscope: KIPRIM DS1202 amzn.to/3gfJGMN
Signal generator: Junctek JDS8080 shorturl.at/ehTZ1
Component Tester: T7 Multifunction amzn.to/3AYY03v
Soldering Station: Sealody ???????

[@IZ0MTW]

Thanks for sharing the video. Not sure why you keep inverting the names. H field probe is the circular one, the one that picks up the magnetic field. E field is the pointy one, sensing the electric field. The two fields by the way are not 90 degrees out of phase, is just the vectors representing the fields that are at a 90 degree angle in space, but the two fields actually propagate in phase, ie at a moment in time they are both zero for example. I’m about to build some myself but having those super cheap ones available make it non senso to build them. Best wishes

[@learnelectronics]

What I say at the beginning of the video? It's been 30 years since I had RF in school. Forgive me for confusing the efield in the age field

[@bblod4896]

From what I've read, all the probes will have a similar frequency response. The larger probe is used to sniff out the signal and then you move to a smaller probe to narrow down exactly where that signal is coming from. Good for finding interference in a circuit. ☮️

[@KissAnalog]

Paul, I just used these on the job and my manager was so impressed that he bought some for the lab. I was about to do a video and I found this one researching:) Thank you!

[@learnelectronics]

Glad it was helpful!

[@technovideo101]

In an electromagnetic wave, the electric field (E field) and the magnetic field (H field) are in phase and perpendicular to each other.

[@FridayParanormal]

Thank you for the explanation and example! Also thank you for proving some sites will stoop to price gouging lol nevertheless these probes are very handy. Happy new years! Love the breadboard design!

[@hugovale8070]

Happy new year !!!

[@englishrupe01]

A very happy New Year to you. Thanks for the video......they have now shot up to over 12 bucks, because of the "learnelectronics" factor...lol. They perform remarkable well, considering. I am one of those that made my own by following the EEVBlog DIY video. Those work well, too. Thanks, mate, and stay well....and happy.

[@LIM_Khuan]

good explanation, thanks

[@brokenworld1]

I believe you have the terms the wrong way round. The larger loop is the H field, the small tipped one is the E field.

[@warrenbaker4171]

In looking at probes on Amazon, there are half-shield and full-shield probe sets. Can you tell me what the difference is from an application standpoint?

[@davidmoran4471]

A piece of rectangular wave guide is good to explain the E and H propagation at 90° polarization. I used to work on navigational RADAR too many years ago, and wouldn't even be able to climb the stick anymore.

[@michaelpadovani9566]

Pretty neat, happy new year Paul!

[@learnelectronics]

Happy new year!

[@thisoldjeepcj5]

Happy New Year to you also.

[@EnergyTRE]

very much so. thanks friend. not a bad bang for the buck. hard not to find over priced items 😂

[@dsfryda]

Ya they already raised the price to $12 bucks already...LOL

[@learnelectronics]

I hate that

[@dominicread797]

I tensed up at 1:10 - I thought there was going to be blood! I bought a similar set. Mine had 6 pieces, including an even bigger loop probe and a combined loop and stub probe. I found that the 2 smallest loop probes were faulty (the SMA connector was not even touching the PCB) but I still got what I needed for very little money. I hadn't thought about using the VNA as a 'spectrum analyzer' - so glad I saw this. I agree with IZ0MTW - when you say 'E' I shout 'H' and vice versa.

[@learnelectronics]

I know. Can't tell my E from my H

[@MrBC2]

I sent you a show idea via email. It involved setting an RTC using bluetooth and your phone. A button-free solution to set an RTC accurately with a minimum of interaction.

[@w8lvradio]

Happy New Year! What stand are you using for the TinySA? All the Best! 73 DE W8LV BILL

[@learnelectronics]

It's just a smartphone stand

[@bblod4896]

Are you the guy who said not to aim a knife at yourself? That slip was close. Yeah, I shut down my brain for the holidays, only using basic systems for life support 🤣

[@GeigerCounterVirtualMuseum]

Yeah it was almost a video on how to get a blood sample 😮

[@paranoidzkitszo]

23bucks(Canadian) now.... better returns than that of the markets...

[@robertwebb5586]

interesting

[@AJB2K3]

Here's and Idea for a very quick video (KZbin short) Blink a single LED! I have a few shorts now doing this and want to encourage others to join in.

[@nigelsheridan6229]

Happy New Year, thank you for all the informative videos. 73 MM0NJS