Tapered ferrite core, method and apparatus for manufacturing the same, and inductance element using the same

摘要

It has a columnar or cylindrical shape with a length larger than the outer diameter, and has a taper portion formed by a grinding surface on at least one end, and the taper portion is a stripe shape along the longitudinal direction of the ferrite core. The tapered ferrite core having grinding marks can be formed by centerless grinding with a rotating grindstone while rotating the ferrite core.