AU550765B2 - Pwm amplifier - Google Patents

Pwm amplifier

Info

Publication number
AU550765B2
AU550765B2 AU82373/82A AU8237382A AU550765B2 AU 550765 B2 AU550765 B2 AU 550765B2 AU 82373/82 A AU82373/82 A AU 82373/82A AU 8237382 A AU8237382 A AU 8237382A AU 550765 B2 AU550765 B2 AU 550765B2
Authority
AU
Australia
Prior art keywords
pwm amplifier
pwm
amplifier
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.)
Ceased
Application number
AU82373/82A
Other languages
English (en)
Other versions
AU8237382A (en
Inventor
Miki Abe
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of AU8237382A publication Critical patent/AU8237382A/en
Application granted granted Critical
Publication of AU550765B2 publication Critical patent/AU550765B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
AU82373/82A 1981-04-10 1982-04-06 Pwm amplifier Ceased AU550765B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP56054680A JPS57170606A (en) 1981-04-10 1981-04-10 Amplifying circuit for pulse-width-modulated signal
JP56-54680 1981-04-10

Publications (2)

Publication Number Publication Date
AU8237382A AU8237382A (en) 1982-10-14
AU550765B2 true AU550765B2 (en) 1986-04-10

Family

ID=12977495

Family Applications (1)

Application Number Title Priority Date Filing Date
AU82373/82A Ceased AU550765B2 (en) 1981-04-10 1982-04-06 Pwm amplifier

Country Status (9)

Country Link
US (1) US4458208A (OSRAM)
JP (1) JPS57170606A (OSRAM)
KR (1) KR900004193B1 (OSRAM)
AU (1) AU550765B2 (OSRAM)
CA (1) CA1173524A (OSRAM)
DE (1) DE3213269A1 (OSRAM)
FR (1) FR2503961B1 (OSRAM)
GB (1) GB2096850B (OSRAM)
NL (1) NL8201546A (OSRAM)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1215247B (it) * 1985-03-13 1990-01-31 Ates Componenti Elettron Dispositivo e procedimento per azzerare un segnale di uscita in un amplificatore a commutazione.
JPS62145906A (ja) * 1985-12-20 1987-06-30 Nec Corp 増幅回路
JPH04281606A (ja) * 1991-03-11 1992-10-07 Matsushita Electric Ind Co Ltd パルス幅変調増幅器
DE69418371T2 (de) * 1993-03-17 1999-10-21 Kabushiki Kaisha Toshiba, Kawasaki Schaltung zur Pulsweitenmodulation
DE19512383A1 (de) * 1995-04-01 1996-10-10 Nokia Deutschland Gmbh Klasse-D-Leistungsverstärker
US5672998A (en) * 1995-08-09 1997-09-30 Harris Corporation Class D amplifier and method
DE19620693C1 (de) * 1996-05-22 1997-06-26 Becker Gmbh Verstärkerschaltung
US5805020A (en) * 1996-06-27 1998-09-08 Harris Corporation Silent start class D amplifier
US5767740A (en) * 1996-09-27 1998-06-16 Harris Corporation Switching amplifier closed loop dual comparator modulation technique
EP0968565A2 (en) 1998-01-22 2000-01-05 Koninklijke Philips Electronics N.V. Pwm amplifier
US6118336A (en) * 1998-10-30 2000-09-12 Intersil Corporation Start-up circuit for self oscillating class D modulator
DE69829852T2 (de) 1998-11-13 2006-03-02 Stmicroelectronics S.R.L., Agrate Brianza Pulsbreitenmodulierter Brückenverstärker mit konfigurierbarem Eingangsnetzwerk für analogen oder digitalen Eingang ohne Verwendung eines Dreieckwellengenerators
US6249182B1 (en) * 1998-11-18 2001-06-19 Intersil Corporation Class D amplifier with bandwidth independent of load impedance
US6246283B1 (en) * 1999-03-09 2001-06-12 Tripath Technology, Inc. Power efficient line driver
EP1049247B1 (en) 1999-04-27 2005-08-03 STMicroelectronics S.r.l. Class-D amplifier with enhanced bandwidth
JP2003534693A (ja) * 2000-05-25 2003-11-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ カルーセル・ハンドシェイク
JP2003534692A (ja) * 2000-05-25 2003-11-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ サイレントスタート
US6737917B2 (en) 2001-01-18 2004-05-18 Dlogix Co., Ltd. Digital power amplifier
GB0110340D0 (en) * 2001-04-27 2001-06-20 Watts Robert D A signal processing circuit
JP2003110441A (ja) 2001-09-26 2003-04-11 Toshiba Microelectronics Corp ポップ音低減回路及び音声出力増幅装置
US20070139109A1 (en) * 2005-12-21 2007-06-21 Jun Honda Class d amplifier with start-up click noise elimination
WO2007099442A1 (en) * 2006-03-03 2007-09-07 Bang & Olufsen Icepower A/S Hybrid feedback controlled oscillation modulator and switching power amplifier system
US8022756B2 (en) 2007-05-15 2011-09-20 Qualcomm, Incorporated Output circuits with class D amplifier
US8046192B2 (en) * 2008-02-29 2011-10-25 Smurfit-Stone Container Enterprises, Inc. Baler machine monitoring and performance interfaces, systems and methods
US8957726B2 (en) * 2012-10-04 2015-02-17 Semiconductor Components Industries, Llc Amplification circuit and method therefor
US10164581B2 (en) 2014-12-08 2018-12-25 Icepower A/S Self-oscillating amplifier with high order loop filter
JPWO2019131162A1 (ja) * 2017-12-27 2020-12-17 ソニーセミコンダクタソリューションズ株式会社 増幅器および信号処理回路

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1239922A (en) * 1967-04-27 1971-07-21 K D G Instr Ltd Modulated pulse computing circuits
JPS5323419Y2 (OSRAM) * 1972-11-20 1978-06-16
US4061930A (en) * 1976-06-11 1977-12-06 Rohr Industries, Incorporated Base drive inhibit circuit
JPS5947486B2 (ja) * 1976-12-06 1984-11-19 ソニー株式会社 パルス幅変調増巾回路
DE2854196A1 (de) * 1978-12-15 1980-06-26 Bosch Gmbh Robert Schaltungsanordnung zur einschaltverzoegerung bei einer verstaerkerschaltung

Also Published As

Publication number Publication date
KR900004193B1 (en) 1990-06-18
AU8237382A (en) 1982-10-14
DE3213269C2 (OSRAM) 1992-04-02
GB2096850B (en) 1984-10-17
NL8201546A (nl) 1982-11-01
CA1173524A (en) 1984-08-28
GB2096850A (en) 1982-10-20
FR2503961B1 (fr) 1986-03-28
KR840000112A (ko) 1984-01-30
US4458208A (en) 1984-07-03
FR2503961A1 (fr) 1982-10-15
JPS57170606A (en) 1982-10-20
DE3213269A1 (de) 1982-11-04

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