Is it possible to make very small, low power, but high frequency electromagnets and stack them up or inside each other
to make a high field strength, high frequency magnet? or does the presece of other magnetic fields cause the same problems you would expect with only one coil?
would superconductors work well for what i want? say maybe a 0.5 T at 800Mhz?
will just the plain watered down equations work at high frequecies and field strengths if I don't have a core? :)
btw, thanks for you input :)
btw, when I was asking for an explination about maxwells equations, I wasnt asking for specific applications, a completely general explination would be fine, like "to find the magnetic field strength, take this constant multiply it by the permiability equation for the material then multiply it...
yeah, I know that the're nonlinear at high field strengths, that's why I am not useing the watered down versions of those equations.
basically I want an electromagnet that changes polarity at a rate of at least 400Mhz and the highest field strength that the magnet can handle at those...
Say I have an electromagnet, (that I know the dimentions, geometry, material characteristics, etc) that I am driving with a current that is oscilating at some frequecy how can I calculate the maximum strength of the magnetic field that it can create at that frequency?
and the equations need...