Invention Grant
- Patent Title: Thermal control of voice coils in loudspeakers
- Patent Title (中): 扬声器中音圈的热控制
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Application No.: US13247538Application Date: 2011-09-28
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Publication No.: US08774419B2Publication Date: 2014-07-08
- Inventor: Lars Risbo , Milind Anil Borkar , Theis Buchwald Christiansen
- Applicant: Lars Risbo , Milind Anil Borkar , Theis Buchwald Christiansen
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent John R. Pessetto; Frederick J. Telecky, Jr.
- Main IPC: H03G11/00
- IPC: H03G11/00 ; H04R3/00
Abstract:
In an embodiment of the invention, the voice coil of an electro dynamic transducer is protected against thermal overload by estimating the temperature of a magnet in the electro dynamic transducer. When a power limit based on the temperature of the magnet and on a predetermined voice coil temperature limit is reached by an audio signal, the power applied to the voice coil is reduced.
Public/Granted literature
- US20130077794A1 Thermal Control of Voice Coils in Loudspeakers Public/Granted day:2013-03-28
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