Microphone with voltage pump
US7391873B2 · kind B2 · utility
11Cited by
11References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2004 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Apr 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/407
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An integrated circuit (102) configured to provide a microphone output signal, comprising: a preamplifier (108) coupled to receive an input signal, generated by a first microphone member that is movable relative to a second microphone member; and a voltage pump (104) to provide a bias voltage to either microphone member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.