How to Simulate 3-Axis Helmholtz Coil in Maxwell 3D?

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SUMMARY

The discussion focuses on simulating a 3-axis Helmholtz Coil using Maxwell 3D software. The user seeks clarification on the correct ratios of coils in the x, y, and z axes, as well as their current excitation settings. Additionally, they request examples of H field or B field plots to verify their simulation results. The conversation emphasizes the importance of understanding coil excitation types and the intended application of the magnetic field generated.

PREREQUISITES
  • Maxwell 3D simulation software
  • Understanding of Helmholtz Coil configurations
  • Knowledge of magnetic field theory (H field and B field)
  • Familiarity with AC and DC current excitation methods
NEXT STEPS
  • Research the design principles of Helmholtz Coils
  • Learn how to set up coil excitation in Maxwell 3D
  • Explore methods for visualizing magnetic fields in simulation software
  • Investigate applications of 3-axis magnetic fields in experimental setups
USEFUL FOR

Engineers, physicists, and researchers involved in electromagnetic simulations, particularly those utilizing Maxwell 3D for designing and analyzing magnetic field configurations.

pisoj
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First of all, hello to all of you.

My question is, I want to simulate 3-axis Helholtz Coil in Maxwell 3d. I made some models of it, but I am not sure I got all right - especially ration of coils in x-y-z and their current excitation.

Second, i'd like to see H field, or B field plot if some of you has it, as I am not sure if mine is alright.

thanks in advance, and I hope this topic will get to live!
 
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pisoj said:
First of all, hello to all of you.

My question is, I want to simulate 3-axis Helholtz Coil in Maxwell 3d. I made some models of it, but I am not sure I got all right - especially ration of coils in x-y-z and their current excitation.

Second, i'd like to see H field, or B field plot if some of you has it, as I am not sure if mine is alright.

thanks in advance, and I hope this topic will get to live!
Can you show us what you have so far? Are the coils excited with DC or AC currents? Can you say what you are going to use the 3-D steerable magnetic field for? How large are the coils going to be, and how high will the field be? How large is the volume that you want to fill with the magnetic field from the 3 pairs of coils?
 
Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?

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