Laminated motor structure for electromagnetic transducer

Details Laminated motor structure for electromagnetic transducer Laminated motor structure for electromagnetic transducer

2003-12-31

2008-11-25

Ensey, Brian (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S412000

Reexamination Certificate

active

07457429

ABSTRACT:
An electromagnetic transducer such as an audio speaker having at least one of the soft magnetic components of its motor assembly constructed as a laminated structure of electrically insulated magnetically conductive sections. Eddy currents, which would have been induced in a monolithic component in response to an electrical signal applied to the voice coil, are prevented or significantly reduced by the electrical insulation material between the sections of the laminated component. The transducer produces less heat, is less susceptible to flux modulation, and has increased power handling and reduced distortion.

REFERENCES:
patent: 2894182 (1959-07-01), Zuerker et al.
patent: 3922501 (1975-11-01), Yamamuro

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