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???
09/05/05 08:44
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Msg Score: +1
 +1 Good Answer/Helpful
#100595 - speaker magnets
Responding to: ???'s previous message
The speaker magnet is not suitable for your test. In speaker magnets, magnetic flux is designed to concentrate in the gap between side wall of magnet and outer york, where voice coil is placed. So, the "center" of the magnet is not the place where magnetic flux is the strongest, rather the weakest. Cut out the iron outer york of the speaker magnet.

Or find another magnets. You'll find many magnets around you.
Magnet clips for white board, small DC motors including CPU fan, hard disk, etc.

Tsuneo

List of 29 messages in thread
TopicAuthorDate
Triggering Hall Effect sensors            01/01/70 00:00      
   Comparator            01/01/70 00:00      
      Analog output?            01/01/70 00:00      
         Nope.            01/01/70 00:00      
            Little magnets            01/01/70 00:00      
               Wow !            01/01/70 00:00      
               Nice link            01/01/70 00:00      
            bar magnets?            01/01/70 00:00      
               bar magnets            01/01/70 00:00      
                  Got the point,            01/01/70 00:00      
               The earth magnetism            01/01/70 00:00      
                  Made it work !            01/01/70 00:00      
                     BLDC motor, Gear tooth sensor, etc            01/01/70 00:00      
                        Geartooth sensors good ;)            01/01/70 00:00      
         Analog output?            01/01/70 00:00      
   speaker magnets            01/01/70 00:00      
      Ditto that            01/01/70 00:00      
         Flux            01/01/70 00:00      
      C like motor magnets            01/01/70 00:00      
         Open-Collector output            01/01/70 00:00      
            I did            01/01/70 00:00      
   How to attach more than one magnet            01/01/70 00:00      
      symmetric placement            01/01/70 00:00      
         photo coupler            01/01/70 00:00      
      Measuring RPM - the software side            01/01/70 00:00      
         Timing routines are alright            01/01/70 00:00      
   Unipolar vs bipolar sensors            01/01/70 00:00      
   try here            01/01/70 00:00      
      Thanks for your contribution erik            01/01/70 00:00      

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