Moving Iron question

Hope that this helps Grado Cartridge Structure. Click on the top tab marked "Cartidges"

FP,

Thanks for the link, but the Grado explanation is that the moving iron element creates an increase in one flux gap and a decrease in another as it moves back and forth on the cantilever. I don't quite understand what that means or how it induces a current. If there were already a constant current, I think I understand how it could impede that as it moves, but I don't understand how it could induce current.

Marty

'Induction' means that a field from a magnet is used to strengthen the smaller field of a magnetic material attached to the cantilever by means of proximity. The smaller material can be iron oxide.

This increases the field strength and keeps the moving mass low.

Thanks Story, I didn't realize that iron meant iron oxide = magnet.

Marty