Hi All
    I was wondering , Sean Thomas has described in detail how to
construct a speaker style coil for use in a smt8 sensor.  Various
factors were discussed to improve the strength of the coil/magnet .  My
question, to Sean Thomas  and all, is  would the use of ferrite over
steel improve the magnet field concentration and therefore sensor
performance. I have seen various ferrite shapes. I'm not sure how well
it machines.
Regards
Barry


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