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ATE482521T1 - Verstärkerschaltung zur ansteuerung eines diffusors - Google Patents

Verstärkerschaltung zur ansteuerung eines diffusors

Info

Publication number
ATE482521T1
ATE482521T1 AT09160166T AT09160166T ATE482521T1 AT E482521 T1 ATE482521 T1 AT E482521T1 AT 09160166 T AT09160166 T AT 09160166T AT 09160166 T AT09160166 T AT 09160166T AT E482521 T1 ATE482521 T1 AT E482521T1
Authority
AT
Austria
Prior art keywords
diffuser
charging signal
controlling
amplifier circuit
amplifier
Prior art date
Application number
AT09160166T
Other languages
English (en)
Inventor
Federico Forte
Original Assignee
St Microelectronics Srl
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 St Microelectronics Srl filed Critical St Microelectronics Srl
Application granted granted Critical
Publication of ATE482521T1 publication Critical patent/ATE482521T1/de

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
    • H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/345—Pulse density modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/351—Pulse width modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/48—Indexing scheme relating to amplifiers the output of the amplifier being coupled out by a capacitor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Stereo-Broadcasting Methods (AREA)
AT09160166T 2008-05-21 2009-05-13 Verstärkerschaltung zur ansteuerung eines diffusors ATE482521T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000930A ITMI20080930A1 (it) 2008-05-21 2008-05-21 Circuito di amplificazione per il pilotaggio di un diffusore

Publications (1)

Publication Number Publication Date
ATE482521T1 true ATE482521T1 (de) 2010-10-15

Family

ID=40302790

Family Applications (1)

Application Number Title Priority Date Filing Date
AT09160166T ATE482521T1 (de) 2008-05-21 2009-05-13 Verstärkerschaltung zur ansteuerung eines diffusors

Country Status (5)

Country Link
US (1) US8223991B2 (de)
EP (1) EP2124331B1 (de)
AT (1) ATE482521T1 (de)
DE (1) DE602009000220D1 (de)
IT (1) ITMI20080930A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2365634B1 (de) * 2010-03-10 2016-12-21 Nxp B.V. Impulsdichtemodulierungsverfahren und -vorrichtung
IT1401466B1 (it) * 2010-06-25 2013-07-26 St Microelectronics Srl Circuito elettronico per pilotare un amplificatore a commutazione
US20120300947A1 (en) * 2011-05-23 2012-11-29 Chun-Wei Lin Signal converter with overcurrent protection mechanism
US9197172B2 (en) * 2013-09-17 2015-11-24 Qualcomm Incorporated Switched mode high linearity power amplifier
CN113890719B (zh) * 2017-01-22 2024-10-15 上海朗帛通信技术有限公司 一种无线通信中的方法和装置
FR3072532A1 (fr) * 2017-10-17 2019-04-19 Dolphin Integration Generateur de rampe et modulateur pour reduire les bruits de claquement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5142695A (en) * 1991-03-21 1992-08-25 Novatel Communications, Ltd. Cellular radio-telephone receiver employing improved technique for generating an indication of received signal strength
FR2810814B1 (fr) * 2000-06-26 2002-09-20 St Microelectronics Sa Modulateur fm numerique a faible cout
US7590251B2 (en) * 2003-03-21 2009-09-15 D2Audio Corporation Clip detection in PWM amplifier
WO2005104349A1 (ja) * 2004-04-21 2005-11-03 Rohm Co., Ltd 信号出力回路、それを用いたオーディオ信号出力装置、電子機器
WO2007113736A1 (en) * 2006-03-31 2007-10-11 Nxp B.V. Digital signal converter
US7782129B2 (en) * 2006-06-30 2010-08-24 Ess Technology, Inc. System and method to reduce audio artifacts from an audio signal by reducing the order of the control loop
KR100810853B1 (ko) * 2006-08-25 2008-03-06 삼성전자주식회사 오디오 출력장치에서 팝 노이즈를 방지하기 위한 장치 및방법
US9014396B2 (en) * 2008-01-31 2015-04-21 Qualcomm Incorporated System and method of reducing click and pop noise in audio playback devices

Also Published As

Publication number Publication date
EP2124331A1 (de) 2009-11-25
DE602009000220D1 (de) 2010-11-04
ITMI20080930A1 (it) 2009-11-22
EP2124331B1 (de) 2010-09-22
US20090289704A1 (en) 2009-11-26
US8223991B2 (en) 2012-07-17

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties