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Magnetic suspension for Cd player
Magnetic suspension for Cd player
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Old 6th February 2004, 10:13 AM   #1
peranders is offline peranders  Sweden
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Magnetic suspension for Cd player
Default Magnetic suspension for Cd player

http://www.kedab.se/Intro%20Index_fi...onProjects.htm

I stumbled across this by misstake. Magnetic suspension for a CD player.
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Old 6th February 2004, 02:20 PM   #2
elperopu is offline elperopu  Italy
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wow!
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Old 7th February 2004, 04:37 AM   #3
Lovan is offline Lovan  Sweden
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If my eyes are not mistaken, I think it´s only using magnetics as vertical suspension. Looks like it uses some kind of guidelines so it won´t "fall" of.
I think there are better ways than magnetics anyway
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Old 7th February 2004, 05:08 AM   #4
Prune is offline Prune  Canada
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This tends to come up again and again.
Of course it has guidelines. Earnshaw's theorem: it is not possible to achieve static levitation using any combination of fixed magnets and electric charges.
So, you either need an active system (i.e. the levitating spinning top or electromagnet with feedback system), quantum effects (i.e. an object put on a table levitates a tiny amount over it instead of passing through the table), or diamagnetic levitation (the only practical way to get sufficient effect is to use a superconductor as the diamagnetic material).
Finally, magnetic levitation won't prevent, and worse, won't damp any vibrations from the air (sound).
Do vibration isolation the way it's done in labs -- I've seen a confocal (laser scanning) microscope setup using a heavy marble base, lots of sand, and pneumatic dampers.
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Old 7th February 2004, 10:52 AM   #5
Faber is offline Faber  Italy
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something similar it the Relaxa-1 table. You can find some review http://www.tnt-audio.com/accessories/relaxa1_e.html
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Old 7th February 2004, 09:24 PM   #6
Peter Daniel is offline Peter Daniel  Canada
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What strikes me about this design is that black plastic cover is flush with aluminum block. If this is the case, handling CD is very difficult as there is not enough clearance for the fingers to get hold of the edge of the disk.

Otherwise seems like an interesting approach.
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Old 7th February 2004, 10:58 PM   #7
karma is offline karma  Canada
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yes it would be but it looks nice
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Old 7th February 2004, 11:29 PM   #8
jleaman is offline jleaman  Belgium
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what about the cd's being a little of centered and wobbleing and or the bottem getting scratched..
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Old 7th February 2004, 11:32 PM   #9
tiroth is offline tiroth  United States
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If the CD is wobbling that much you'll have big problems regardless.
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Old 7th February 2004, 11:45 PM   #10
Peter Daniel is offline Peter Daniel  Canada
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As long as aluminum part is not higher than the plastic lens protecting cover, the CD has no way to touch anything, unless of course you were using it for other purposes previously
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