Patent ID: 11902764
Assignee: GOERTEK INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. The magnetic circuit structure of the transducer of claim 2, wherein the permanent magnets for generating the static magnetic field are disposed in pairs and the permanent magnets of each pair are opposite to each other, the permanent magnets are magnetized in the moving direction of the transducer, and polarities of opposite ends of the permanent magnets that are opposite to each other of each pair are configured to be opposite,
wherein the third magnet set is correspondingly provided between two adjacent sets of permanent magnets on each side of the static magnetic field generated by the first magnet set and the second magnet set, and
wherein the polarities of the two second magnetism gathering permanent magnets at ends close to the same static magnetic field are configured to be opposite.