Talk:Pole piece

Pole pieces for electromagnets?

"In the case of an electromagnet, the pole piece or pieces simply extend the magnetic core and can even be regarded as part of it, particularly if they are made of the same material. In the case of a permanent magnet, the distinction between the magnet itself and the pole piece or pieces is more clear cut." clarification probably needs either more clarification, or its own section.

As far as I'm aware, "pole piece" in an electromagnet is only really used to refer to pieces of a separate material attached to the core to direct the field. Is there ever a way in which the "pole piece" is not part of the core if they're the same material? Attaching e.g. a ferrite cap to the pole of a transformer's ferrite core shouldn't be meaningfully different from having a larger single piece of ferrite. (At least electrically; if the core is also under mechanical stress it might matter, but that's certainly an edge case.)

The latter sentence for permanent magnets warrants some neater way of saying "it's the part that isn't permanently magnetised"; I can't immediately think of a way to phrase it that isn't just tautology. Fishsicles (talk) 17:18, 10 October 2024 (UTC)