Shielded magnetic assembly for use with a hearing aid

Details Shielded magnetic assembly for use with a hearing aid Shielded magnetic assembly for use with a hearing aid

H - Electricity

04

R

181/22

H04R 25/00 (2006.01)

Patent

CA 1311424

-20- Abstract of the Disclosure A shielded magnetic assembly for use in a magnetic hearing aid is described. The shielded assembly uses a disc-shaped magnet with a high permeability, low coercivity material placed on the face of the magnet away from the air gap. Preferably, the shielding material also covers portions of the edge of the magnet to form a cap. The shielding focuses the magnet's energy into the air gap to improve coupling and reduce interference from external magnetic fields.

605923

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