Magnetic potential coil (probe)
Laboratorio Elettrofisico
potential coil is essentially a long winding made of many turns
wounded in a thin tube.
The potential coil is connected to a fluxmeter and is mainly used
to measure the demagnetization field Ha inside permanent
magnets.
The measurement is made by positioning the end of the coil on one
surface of the magnet, then resetting the fluxmeter and removing
the coil to a zero-field region. The measured flux O is related to Hd
by the relationship: ^
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