Magnetic suspension for Cd player - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 6th February 2004, 10:13 AM   #1
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
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.
__________________
/Per-Anders (my first name) or P-A as my friends call me
  Reply With Quote
Old 6th February 2004, 02:20 PM   #2
diyAudio Member
 
Join Date: Jan 2004
Location: TN
wow!
  Reply With Quote
Old 7th February 2004, 04:37 AM   #3
Lovan is offline Lovan  Sweden
diyAudio Member
 
Lovan's Avatar
 
Join Date: Oct 2003
Location: Sweden
Send a message via ICQ to Lovan
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
  Reply With Quote
Old 7th February 2004, 05:08 AM   #4
Prune is offline Prune  Canada
Account Disabled
 
Join Date: Mar 2003
Location: Vancouver
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.
  Reply With Quote
Old 7th February 2004, 10:52 AM   #5
Faber is offline Faber  Italy
diyAudio Member
 
Join Date: Jun 2002
Location: East side of Milano
Send a message via ICQ to Faber Send a message via MSN to Faber
something similar it the Relaxa-1 table. You can find some review http://www.tnt-audio.com/accessories/relaxa1_e.html
__________________
Fabrizio
  Reply With Quote
Old 7th February 2004, 09:24 PM   #6
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
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.
Attached Images
File Type: jpg cdp.jpg (19.2 KB, 494 views)
  Reply With Quote
Old 7th February 2004, 10:58 PM   #7
karma is offline karma  Canada
diyAudio Member
 
karma's Avatar
 
Join Date: Feb 2003
Location: hamilton,ontario
yes it would be but it looks nice
  Reply With Quote
Old 7th February 2004, 11:29 PM   #8
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
what about the cd's being a little of centered and wobbleing and or the bottem getting scratched..
  Reply With Quote
Old 7th February 2004, 11:32 PM   #9
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
If the CD is wobbling that much you'll have big problems regardless.
  Reply With Quote
Old 7th February 2004, 11:45 PM   #10
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
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
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Self-centering Magnetic Suspension? Stocker Everything Else 19 14th January 2013 07:17 AM
fs3 suspension phildcamp Subwoofers 4 29th October 2008 12:29 PM
Suspension collapsed davidsrsb Analogue Source 4 26th January 2006 08:06 PM
Suspension Grommets JonesS Analogue Source 2 17th November 2005 02:20 AM
Magnetic suspension linear-tracking tonearm? Shaun Analogue Source 5 4th June 2003 11:21 PM


New To Site? Need Help?

All times are GMT. The time now is 04:47 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2