Magnetic field measurement
Magnetic field measurement
(OP)
Hi guys. I have what I think is a basic question. I'm not much of an electrical engineer, so I hope it does not sound too silly. I have the basic equations that characterize the magnetic field on axis with a solenoid shell at a distance away from the solenoid. However since the field falls away so quickly I wanted to concentrate the flux with a solenoid with some sort of core (probably ferrite). I only need a magnetic field a few millimeters away from the electromagnet, but it will not make contact with the magnetic substrate. I have tried to find equations to help characterize the field away from a solenoid with a core but have not been able to. I also looked for commercial electromagnets that may have specific field equations for that particular electromagnet, but none I found have the formula, plus they are all contact electromagnets.
Any ideas on where I can get (or I guess make?) an electromagnet to attract a magnetic material from a distance of a few mm and its magnetic field equation so I can model it?
Thanks already,
George
Any ideas on where I can get (or I guess make?) an electromagnet to attract a magnetic material from a distance of a few mm and its magnetic field equation so I can model it?
Thanks already,
George





RE: Magnetic field measurement
You asked for advice on if someone already has simplified equations for just this application. I am sorry I do not know that, but someone in this forum might. If you do not get an easy answer, then maybe measuring will have to suffice. You might want to measure anyway, just to refine the calibration. The equations can get you in the ballpark in your experimental stage.
RE: Magnetic field measurement
Peter
RE: Magnetic field measurement