MAGLEV CRADLE DIAGRAM
W. Beaty 1994

Here a 3 inch alnico rod magnet is levitated by the cradle. Below the magnet are two rows of tilted coils. On the core face of each coil is the Hall device which provides the feedback-generated repulsion profile between the magnet and the coil. This particular version was only marginally stable, and the bar magnet would remain levitated for several seconds before oscillations built up and ejected it from the device.

See also: Schematic & more info

        _       _       _       _ 
       | |     | |     | |     | |
       | |     | |     | |     | |
       | |     | |     | |     | |
       | |     | |     | |     | | 
    ___| |_____| |_____| |_____| |___
   |_________________________________|
   Side view of iron bar  
   with threaded rods screwed in.

        _       _       _       _    
      _| |_   _| |_   _| |_   _| |_  
     |     | |     | |     | |     | 
     |     | |     | |     | |     | 
     |     | |     | |     | |     | 
     |     | |     | |     | |     | 
    _|_   _|_|_   _|_|_   _|_|_   _|_
   |_________________________________|
 Side view of iron bar 
   with coils on rods. (2 needed)



           ss41
         (===)
    _____|---|_____   Each coil has a 
   |               |  "Hall" sensor 
   |               |  placed on the end 
   |               |  of the iron rod 
   |               |  core, with wires
   |               |  leading back to 
   |               |  the circuitry.
   |               |
   |               |
 __|_______________|_________
|____________________________|



   row of                  row of
   threaded               threaded
     rods  /\           /\  rods
         /\  /         \  /\
       /\  /             \  /\
/\   /\  /                 \  /\   /\
\  \/\ /        END          \  /\/ /
 \  \/          VIEW           \/  /
   \  \                       /  /   
     \/   flat iron bars,     \/     
          1" x 1/4", with
          threaded holes





               magnet rod
              floats here
                   _           
                  (_)          
       /\  /\             /\  /\  
     /    \ /             \ /    \ 
   /        \             /        \
/\          /             \          /\
\ \       /       END       \       / /
 \  \   /         VIEW        \   /  /
   \  \                         /  /   
     \/                         \/
coils wound on
   iron rods