demagnetize


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Electrical power is only required for 1-2 seconds to initially magnetize or demagnetize the mold.
Patients with cochlear implants may want to steer clear of certain magnetic imaging devices such as 3T MRI machines, because the machines can demagnetize the patient's implant, according to research published in the December 2008 issue of Otolaryngology - Head and Neck Surgery.
This is required to optimally demagnetize the outer-most permalloy shield.
Idle disks may start to lose data and start to demagnetize after a year or two, unless they are spun-up every 30 days.
Electrical pulses lasting 20 millisec completely demagnetize the ALNICO magnet when it is time to remove the mold.