thank's Let's explain some:
This is a Dentate ferromagnetic core in front of a magnet.
The flux density is different grooves and indentations.
When the core was moving horizontally perpendicular to the magnetic field
Induction voltage wires inside the groove and the tooth matched.
If necessary,send your email to my PV's that i send the project file to you.
thank's a lot:thumbsup: