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High flux field

thread340-222571

High flux field

High flux field

(OP)
I am testing the upper limit of hall sensors and I would like a quick and simple way of generating a high flux field over 10,000 to 20,000 Gauss, over 1 Tesla in a gap about 4 mm (0.15") wide.  The field needs to be reasonably even over about 10x10mm (0.4") so that I don't get too much variation with position.

At the moment I have two 1" Neo. magnets 0.5T at surface and separated by 4 mm.  I am getting good field up to 1 T.

thanks
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RE: High flux field

build a small yolk assembly.  A "C" made from good low carbon iron, your two magnets on the tips of the "C", and pole pieces on the magnets.  I would taper the poles just a bit, but leave the pole faces twice the size that you need to help with uniformity.  Engineer the size to give you your 5mm gap.

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Plymouth Tube

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