Comment on First Cable-Free Elevator Zooms Horizontally and Vertically Using Maglev TechparentComments−ComputerGuru9yI'm not sure how the elevator works, but if you've ever tried to toss a magnet down a copper tube, it appears to defy gravity - no electricity involved. Something similar could work to create a "fail-proof" elevator.−k26dr9yIn this case the eletric current creates the magentism though. Turn off power and poof, gravity is back−rrobukef9yOnly half of the setup are electro magnets. The other half are permanent. If the elevator falls the permanent magnets will induce the coils.
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I'm not sure how the elevator works, but if you've ever tried to toss a magnet down a copper tube, it appears to defy gravity - no electricity involved. Something similar could work to create a "fail-proof" elevator.
In this case the eletric current creates the magentism though. Turn off power and poof, gravity is back
Only half of the setup are electro magnets. The other half are permanent. If the elevator falls the permanent magnets will induce the coils.