Voice coils for use with temperature sensors and devices including the same
US11940329B2 · kind B2 · utility
0Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 24, 2020 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | May 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A panel audio loudspeaker having a panel extends in a plane and an actuator is coupled to the panel. The actuator includes a voice coil attached to and extending from the panel along an axis, a magnet assembly suspended from the panel via one or more springs, and a temperature sensor in electrical contact with the coil at three different axial locations. The temperature sensor is configured, during operation of the device, to measure a temperature of the coil based on voltage measurements at the three different axial locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.