Levitating Magnet with Load of 12oz: Shielding Electronics & Transmitter

Click For Summary
SUMMARY

This discussion focuses on the challenges of using electronics, specifically wireless transmitters, within the strong electromagnetic field generated by a powerful electromagnet capable of levitating a 12oz load. The main concerns include shielding electronics to prevent damage while ensuring effective signal transmission. Participants suggest exploring options such as Faraday shields and Mu-metal for shielding, while also considering the nature of the magnetic field (DC) and its potential interference with wireless signals. The discussion emphasizes the need for careful planning before implementing these technologies to avoid damaging sensitive components.

PREREQUISITES
  • Understanding of electromagnetic fields and their effects on electronic components
  • Knowledge of shielding materials like Faraday cages and Mu-metal
  • Familiarity with wireless transmission technologies, including Bluetooth
  • Basic principles of AC and DC power systems
NEXT STEPS
  • Research the effectiveness of Faraday shields in high magnetic field environments
  • Investigate the properties and applications of Mu-metal for electromagnetic shielding
  • Learn about the impact of electromagnetic interference on wireless signal integrity
  • Explore microcontroller and sensor compatibility with strong magnetic fields
USEFUL FOR

Electronics engineers, hobbyists working with electromagnets, and developers of wireless communication devices who need to understand the implications of electromagnetic fields on electronic performance.

lzh
Messages
109
Reaction score
0
So basically i have this powerful electromagnet that generates an electromagnetic field that can levitate another magnet and withhold a load of 12oz and still levitate:
levitron_globe.jpg

My problem is, I want to be able to use electronics and send wireless signals through this strong magnetic field. I can shield the electronics with a thin metal sheet but my wireless transmitter cannot have this protection, since it would essentially prevent radio transmission. Additionally, even if the transmitter can be allowed to transmit, the magnetic field would have some major interference on the data transmission(right?). So I was wondering if you guys know of any special way to shield the transmitter so that
1) the electronics shielded within this magnetic field won't fry
2) the signal gets transmitted

Is a faraday's shield even going to be effective in this situation? Should I consider Mu-metal instead? Or do a combination?
 
Last edited:
Engineering news on Phys.org


Is the magnetic field ac or dc? If it is dc, what electronic component do you expect to fail? If it is ac, what frequency is it, and how large is it (Gauss)? Are you sure the magnetic field will have an effect on the circuits? Have you tried it?

Bob S
 


I'm fairly sure that the magnetic field is dc, since it has an ac/dc adapter. I'm thinking of having a microcontroller and various sensors, as well as bluetooth and perhaps a wireless transmitting mini camera. These are all pretty barebone parts from sites like sparkfun, so I don't think that they will be safe from the magnetic field. And then of course there is the problem with the signal transmission.

I haven't tried all this yet since I'd like to seek some advice before I accidentally destroy something :/

thanks for the help
 

Similar threads

Replies
3
Views
615
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
33
Views
3K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 1 ·
Replies
1
Views
278
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 12 ·
Replies
12
Views
2K
Replies
3
Views
4K
  • · Replies 8 ·
Replies
8
Views
2K