- #1
inversquare
- 17
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Any recommendations for getting an accurate reading of a magnetic field in a solenoid coil?
They're ferrite cores wrapped with magnetic copper wire. Would putting a Hall sensor at the end of the ferrite be a reasonable way to do this? Or will the field have already diverged? (The coil stops before the end of the ferrite).
One technique we tried was to measure the inductance, use that to calculate permeability of our core
##u=\frac{Ll}{N^{2}A}##
... and use that to calculate our B field.
##B = u\frac{N}{l}I = \frac{LI}{NA}##
Any other ideas? Thanks!
They're ferrite cores wrapped with magnetic copper wire. Would putting a Hall sensor at the end of the ferrite be a reasonable way to do this? Or will the field have already diverged? (The coil stops before the end of the ferrite).
One technique we tried was to measure the inductance, use that to calculate permeability of our core
##u=\frac{Ll}{N^{2}A}##
... and use that to calculate our B field.
##B = u\frac{N}{l}I = \frac{LI}{NA}##
Any other ideas? Thanks!