Magnets & a hard drive platter
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Uploader Comments (stop4stuff)
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before this i thought that all that eddy current & hysteresis is bullshit , i thought that its so small that its effects could be neglected in TRFs , Motors ect !
But its amazing that eddy current have enough force to rotate the HD platter !
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If you have access to a decent sized mains transformer with 12 volt primary, remove one end of it then feed the secondary coil with 12 volts ac, be sure the open end is up with the disk platter on top, oh and just in case, stand back before switching on.
Eddy currents, the bane of some motors and transformers, but fun to experiment with.
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man thats nice
when i saw it moving i got like wtf holy shiit!
ima rly going to open up some trashed hds
itanium86 4 years ago
you'll need a couple of small torx/star type screwdrivers & there's one or 2 arc shaped neo magnets in there too... good luck
stop4stuff 4 years ago
What Lego motor was that? Robotics?
xXxmidgexXx 4 years ago
yep... officially described as 'Electric Technic Mini-Motor 9v' part # 71427
stop4stuff 4 years ago
Dude thats just retarded, the HD platter has nothing to do with it, but the magnets you put inside the platter, those are making the whole thing turn in reaction to the motor spunning underneath...
olBidimanriver 5 years ago
What or who is retarded?
The HD platter is solid aluminium with surface metals for data storage... I don't have the tools or resources to install magnets within a solid metal disc & make it look original.
The HD platter is spinning due to eddy currents creating a magnetic field in the aluminium which attract to the magnets on the rotor. Go google for 'paramagnetic' & try to understand what you're talking about b4 shooting ur mouth off eh!
stop4stuff 5 years ago