Title:
【考案の名称】トランスジュ-サ装置
Document Type and Number:
Japanese Patent JPS6019436
Kind Code:
Y2
Abstract:
A transducer device such as a loudspeaker or microphone has the electrical coil stationary with respect to the acoustic diaphragm. The diaphragm is actuated by a movable permanent magnet which interacts with the field of the stationary electrical coil. The preferred permanent magnet is one having a high torque-to-weight ratio with respect to an external field. The cobalt-rare earth magnets are examples of such permanent magnets.
Inventors:
Rollin' Gems Parker
Application Number:
JP17225880U
Publication Date:
June 11, 1985
Filing Date:
December 02, 1980
Export Citation:
Assignee:
General Electric Company
International Classes:
H04R9/06; H04R11/00; H04R11/02; (IPC1-7): H04R11/00
Attorney, Agent or Firm:
Tokunji Ikunuma
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