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DE60329731D1 - Geschalteter Mikrofonpuffer - Google Patents

Geschalteter Mikrofonpuffer

Info

Publication number
DE60329731D1
DE60329731D1 DE60329731T DE60329731T DE60329731D1 DE 60329731 D1 DE60329731 D1 DE 60329731D1 DE 60329731 T DE60329731 T DE 60329731T DE 60329731 T DE60329731 T DE 60329731T DE 60329731 D1 DE60329731 D1 DE 60329731D1
Authority
DE
Germany
Prior art keywords
microphone buffer
switched
switched microphone
buffer
microphone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE60329731T
Other languages
English (en)
Inventor
Robert C Potter
Steven E Boor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knowles Electronics LLC
Original Assignee
Knowles Electronics LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Knowles Electronics LLC filed Critical Knowles Electronics LLC
Application granted granted Critical
Publication of DE60329731D1 publication Critical patent/DE60329731D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/303—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/185—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Electronic Switches (AREA)
DE60329731T 2002-04-15 2003-04-15 Geschalteter Mikrofonpuffer Expired - Lifetime DE60329731D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37245102P 2002-04-15 2002-04-15

Publications (1)

Publication Number Publication Date
DE60329731D1 true DE60329731D1 (de) 2009-12-03

Family

ID=28675595

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60329731T Expired - Lifetime DE60329731D1 (de) 2002-04-15 2003-04-15 Geschalteter Mikrofonpuffer

Country Status (4)

Country Link
US (1) US7092538B2 (de)
EP (1) EP1355415B1 (de)
DE (1) DE60329731D1 (de)
DK (1) DK1355415T3 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8139790B2 (en) * 2008-05-15 2012-03-20 Fortemedia, Inc. Integrated circuit biasing a microphone
US9407256B2 (en) * 2011-05-30 2016-08-02 Sony Corporation Reducing a disturbance on a signal path of a semiconductor switch
US9590571B2 (en) 2012-10-02 2017-03-07 Knowles Electronics, Llc Single stage buffer with filter
US9402131B2 (en) 2013-10-30 2016-07-26 Knowles Electronics, Llc Push-pull microphone buffer
US9485594B2 (en) 2014-08-06 2016-11-01 Knowles Electronics, Llc Connector arrangement in hearing instruments
US9859879B2 (en) 2015-09-11 2018-01-02 Knowles Electronics, Llc Method and apparatus to clip incoming signals in opposing directions when in an off state
US11115744B2 (en) 2018-04-02 2021-09-07 Knowles Electronics, Llc Audio device with conduit connector
US11536757B2 (en) 2020-06-19 2022-12-27 Knowles Electronics, Llc Capacitive sensor assemblies and electrical circuits therefor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512100A (en) 1968-07-03 1970-05-12 Intern Research Products Inc Audio frequency amplification circuit
US4063050A (en) 1976-12-30 1977-12-13 Industrial Research Products, Inc. Acoustic transducer with improved electret assembly
US5083095A (en) 1990-08-22 1992-01-21 Knowles Electronics, Inc. Plural source follower amplifier
US5097224A (en) 1991-04-11 1992-03-17 Telex Communications, Inc. Self-biasing, low noise amplifier of extended dynamic range
US5589799A (en) 1994-09-29 1996-12-31 Tibbetts Industries, Inc. Low noise amplifier for microphone
US6023194A (en) 1997-05-23 2000-02-08 Tibbetts Industries, Inc. Amplifier with reduced input capacitance
NL1009544C2 (nl) 1998-07-02 2000-01-10 Microtronic Nederland Bv Stelsel bestaande uit een microfoon en een voorversterker.
KR20010034031A (ko) 1998-11-12 2001-04-25 롤페스 요하네스 게라투스 알베르투스 증폭기에 의해 생성된 ｄｃ 오프셋 및 노이즈를감소시키는 수단을 포함하는 회로
US6353344B1 (en) 2000-05-22 2002-03-05 Microtronic Us, Inc. High impedance bias circuit

Also Published As

Publication number Publication date
EP1355415A3 (de) 2004-05-06
DK1355415T3 (da) 2010-03-08
US7092538B2 (en) 2006-08-15
EP1355415A2 (de) 2003-10-22
US20030193354A1 (en) 2003-10-16
EP1355415B1 (de) 2009-10-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition