DK1359664T3 - Elektret mikrofonbufferkredslöb med væsentlig forbedret afvisning af effektforsyning - Google Patents

Elektret mikrofonbufferkredslöb med væsentlig forbedret afvisning af effektforsyning

Info

Publication number
DK1359664T3
DK1359664T3 DK03252400T DK03252400T DK1359664T3 DK 1359664 T3 DK1359664 T3 DK 1359664T3 DK 03252400 T DK03252400 T DK 03252400T DK 03252400 T DK03252400 T DK 03252400T DK 1359664 T3 DK1359664 T3 DK 1359664T3
Authority
DK
Denmark
Prior art keywords
electrified
power supply
significantly improved
buffer circuit
improved power
Prior art date
Application number
DK03252400T
Other languages
Danish (da)
English (en)
Inventor
Steven E Boor
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 DK1359664T3 publication Critical patent/DK1359664T3/da

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H03F3/505—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower with field-effect devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Circuit For Audible Band Transducer (AREA)
DK03252400T 2002-04-24 2003-04-15 Elektret mikrofonbufferkredslöb med væsentlig forbedret afvisning af effektforsyning DK1359664T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37498602P 2002-04-24 2002-04-24

Publications (1)

Publication Number Publication Date
DK1359664T3 true DK1359664T3 (da) 2007-10-15

Family

ID=29215900

Family Applications (1)

Application Number Title Priority Date Filing Date
DK03252400T DK1359664T3 (da) 2002-04-24 2003-04-15 Elektret mikrofonbufferkredslöb med væsentlig forbedret afvisning af effektforsyning

Country Status (4)

Country Link
US (1) US7688987B2 (de)
EP (1) EP1359664B1 (de)
DE (1) DE60314326T2 (de)
DK (1) DK1359664T3 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7352876B2 (en) * 2003-04-28 2008-04-01 Knowles Electronics, Llc. Method and apparatus for substantially improving power supply rejection performance in a miniature microphone assembly
US7458041B2 (en) * 2004-09-30 2008-11-25 Magma Design Automation, Inc. Circuit optimization with posynomial function F having an exponent of a first design parameter
US8027489B1 (en) * 2006-07-07 2011-09-27 Analog Devices, Inc. Multi-voltage biasing system with over-voltage protection
JP5842140B2 (ja) * 2010-03-18 2016-01-13 パナソニックＩｐマネジメント株式会社 車載用ラジオ受信装置およびノイズキャンセル方法
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
US10291163B2 (en) * 2016-04-29 2019-05-14 Texas Instruments Incorporated Cascode structure for linear regulators and clamps
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 (13)

* 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
US4647872A (en) * 1985-07-25 1987-03-03 Johnson William Z Cascode amplifier
GB9009577D0 (en) * 1990-04-27 1990-06-20 Oxford Advanced Tech Magnetic field generating 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
US5337011A (en) 1992-12-14 1994-08-09 Knowles Electronics, Inc. Pre-amplifier
US5446413A (en) * 1994-05-20 1995-08-29 Knowles Electronics, Inc. Impedance circuit for a miniature hearing aid
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.
US6853227B2 (en) * 2001-04-17 2005-02-08 K-Tek Corporation Controller for generating a periodic signal with an adjustable duty cycle
US6504409B1 (en) * 2001-04-17 2003-01-07 K-Tek Corporation Controller for generating a periodic signal with an adjustable duty cycle

Also Published As

Publication number Publication date
DE60314326D1 (de) 2007-07-26
US7688987B2 (en) 2010-03-30
EP1359664A1 (de) 2003-11-05
DE60314326T2 (de) 2008-02-21
EP1359664B1 (de) 2007-06-13
US20030202669A1 (en) 2003-10-30

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