发明名称 |
KONDENSATORMIKROPHONBAUGRUPPE, DC SPANNUNGSVERSORGUNG UND VERFAHREN ZUR ERZEUGUNG EINER DC VORSPANNUNG |
摘要 |
The present invention relates to a condenser microphone assembly comprising a capacitive electro-acoustic transducer element comprising a diaphragm and a back-plate operatively connected to a DC bias voltage, a fast charge pump adapted to generate the DC bias voltage, and a controllable or programmable current source operatively connected to the DC bias voltage to draw a predetermined DC current there from. The controllable or programmable current source is responsive to a difference between a representative of a detected DC bias voltage and a DC reference voltage. |
申请公布号 |
DE112009001037(B8) |
申请公布日期 |
2014.03.13 |
申请号 |
DE20091101037T |
申请日期 |
2009.05.04 |
申请人 |
EPCOS PTE LTD |
发明人 |
HANZLIK, TOMASZ E.;POULSEN, JENS KRISTIAN |
分类号 |
H04R19/00;G05F3/20;H02M3/07;H04R3/00;H04R19/04 |
主分类号 |
H04R19/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|