Magnets and Electromagnets (Exptal Set-Up)

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SUMMARY

This discussion focuses on the feasibility of superimposing magnetic fields from electromagnets onto those generated by permanent magnets to achieve a total magnetic field of 1 Tesla. The user, Michael, has two permanent magnets producing a static field of 5000 Gauss and seeks to enhance this with electromagnets. It is confirmed that combining DC and AC magnetic fields is possible, although caution is advised as the AC field may demagnetize the permanent magnets over time.

PREREQUISITES
  • Understanding of magnetic field concepts, specifically Gauss and Tesla units.
  • Knowledge of electromagnet design and operation.
  • Familiarity with the effects of AC and DC magnetic fields on permanent magnets.
  • Basic principles of magnetic levitation and its requirements.
NEXT STEPS
  • Research the design and construction of high-strength electromagnets.
  • Explore the principles of magnetic field superposition.
  • Investigate the demagnetization effects of AC fields on permanent magnets.
  • Learn about magnetic levitation techniques and their applications.
USEFUL FOR

Physics enthusiasts, electrical engineers, and researchers interested in magnetic field applications and magnetic levitation technologies.

Michael Lin
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Hi all,
I need to create a very large magnetic field say 1Tesla (10000 Gauss). But I can not afford to build large electromagnets like the MRI machine. However, I have two permanent magnets that will create a static field of 5000 Gauss. My question is: can I superimpose magnetic fields created by the electromagnets onto the fields created by the permanent magnets? If so, how? There are obvious reasons why I need a changing magnetic field to maintain levitation of a smaller magnet.

Thanks for your help,
Michael
 
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You should be able to superimpose the DC and AC magnetic fields pretty well. I think the only liability is that the AC magnetic field will tend to demagnetize the adjacent permanent magnet a bit over time.
 

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