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Basic program for plotting flux density of a coil?

Basic program for plotting flux density of a coil?

Basic program for plotting flux density of a coil?

(OP)
Dear Group,

I need to design coils for a matress that would emit a uniform magnetic field (~100 gauss at surface). Does anyone know of a free software program that plots magnetic field strength of a coil? Just something basic that has inputs for dimensions, wire size, number of turns, etc; then will show the field strength around the coil at a DC current level.

Many thanks!
Mike

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