JPS6052607B2 - 増幅器 - Google Patents

増幅器

Info

Publication number
JPS6052607B2
JPS6052607B2 JP54057464A JP5746479A JPS6052607B2 JP S6052607 B2 JPS6052607 B2 JP S6052607B2 JP 54057464 A JP54057464 A JP 54057464A JP 5746479 A JP5746479 A JP 5746479A JP S6052607 B2 JPS6052607 B2 JP S6052607B2
Authority
JP
Japan
Prior art keywords
circuit
pulse width
frequency
width modulation
amplifier circuit
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
Application number
JP54057464A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55149512A (en
Inventor
健司 横山
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP54057464A priority Critical patent/JPS6052607B2/ja
Priority to US06/147,502 priority patent/US4346349A/en
Priority to DE3017521A priority patent/DE3017521C2/de
Publication of JPS55149512A publication Critical patent/JPS55149512A/ja
Publication of JPS6052607B2 publication Critical patent/JPS6052607B2/ja
Expired 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0216—Continuous control
    • H03F1/0233—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply
    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0277—Selecting one or more amplifiers from a plurality of 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
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
    • 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
    • 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
    • H03F3/187—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
    • 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
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • 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
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/39—Different band amplifiers are coupled in parallel to broadband the whole amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/432—Two or more amplifiers of different type are coupled in parallel at the input or output, e.g. a class D and a linear amplifier, a class B and a class A amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Amplifiers (AREA)
JP54057464A 1979-05-10 1979-05-10 増幅器 Expired JPS6052607B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP54057464A JPS6052607B2 (ja) 1979-05-10 1979-05-10 増幅器
US06/147,502 US4346349A (en) 1979-05-10 1980-05-07 Multi-channel audio power amplifier
DE3017521A DE3017521C2 (de) 1979-05-10 1980-05-07 Zweikanal-Tonleistungsverstärker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54057464A JPS6052607B2 (ja) 1979-05-10 1979-05-10 増幅器

Publications (2)

Publication Number Publication Date
JPS55149512A JPS55149512A (en) 1980-11-20
JPS6052607B2 true JPS6052607B2 (ja) 1985-11-20

Family

ID=13056391

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54057464A Expired JPS6052607B2 (ja) 1979-05-10 1979-05-10 増幅器

Country Status (3)

Country Link
US (1) US4346349A (US06878557-20050412-C00065.png)
JP (1) JPS6052607B2 (US06878557-20050412-C00065.png)
DE (1) DE3017521C2 (US06878557-20050412-C00065.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010508577A (ja) * 2006-10-30 2010-03-18 クアンタンス， インコーポレイテッド 電力を結合する電源システム
US9281783B2 (en) 2009-03-31 2016-03-08 Quantance, Inc. High speed power supply system

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DE3017414A1 (de) * 1980-05-07 1981-11-12 Deutsche Itt Industries Gmbh, 7800 Freiburg Audio-leistungsverstaerker mit d-gegentakt-endstufe
DE3114743A1 (de) * 1981-04-11 1982-11-11 Blaupunkt-Werke Gmbh, 3200 Hildesheim Nf-verstaerkeranordnung mit einem pdm-verstaerker
IT1190873B (it) * 1982-06-17 1988-02-24 Sgs Microelettronica Spa Amplificatore audio ad alta efficienza
NL8203428A (nl) * 1982-09-02 1984-04-02 Philips Nv Inrichting voor het omzetten van een elektrisch signaal in een akoestisch signaal.
IT1204809B (it) * 1986-02-19 1989-03-10 Sgs Microelettronica Spa Struttura di amplificatore di potenza per basse frequenze,in particolare di tipo integrato,ad alta stabilita'
US5129006A (en) * 1989-01-06 1992-07-07 Hill Amel L Electronic audio signal amplifier and loudspeaker system
FR2666944A1 (fr) * 1990-09-14 1992-03-20 Sextant Avionique Circuit d'amplification a decoupage pour la fourniture d'un courant proportionnel a une tension et systeme de deflexion electromagnetique utilisant au moins un tel circuit.
DE4216918C2 (de) * 1992-05-22 2001-04-05 Blaupunkt Werke Gmbh NF-Leistungsverstärkeranordnung
US5517154A (en) * 1995-01-13 1996-05-14 Tektronix, Inc. Split-path linear isolation circuit apparatus and method
US5802184A (en) * 1996-08-15 1998-09-01 Lord Corporation Active noise and vibration control system
IT1291341B1 (it) * 1997-05-09 1999-01-07 Elettronica 97 Di Ing Giovanni Dispositivo di riduzione della componente di ripple del segnale alimentato ad un carico da un amplificatore di potenza switching
US6097252A (en) * 1997-06-02 2000-08-01 Motorola, Inc. Method and apparatus for high efficiency power amplification
US6016075A (en) * 1997-06-04 2000-01-18 Lord Corporation Class-D amplifier input structure
US5982231A (en) * 1997-07-23 1999-11-09 Linfinity Microelectronics, Inc. Multiple channel class D audio amplifier
US5963086A (en) * 1997-08-08 1999-10-05 Velodyne Acoustics, Inc. Class D amplifier with switching control
US6084468A (en) * 1997-10-06 2000-07-04 Motorola, Inc. Method and apparatus for high efficiency wideband power amplification
US6181796B1 (en) 1998-02-13 2001-01-30 National Semiconductor Corporation Method and system which drives left, right, and subwoofer transducers with multichannel amplifier having reduced power supply requirements
US6587670B1 (en) * 1998-12-22 2003-07-01 Harris Corporation Dual mode class D amplifiers
DE69935198T2 (de) 1999-01-29 2007-10-31 Alcatel Lucent Leistungsverstärkervorrichtung
US6590940B1 (en) * 1999-05-17 2003-07-08 Ericsson Inc. Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform
US6300826B1 (en) 2000-05-05 2001-10-09 Ericsson Telefon Ab L M Apparatus and method for efficiently amplifying wideband envelope signals
US6710646B1 (en) 2000-05-05 2004-03-23 Telefonaktiebolaget Lm Ericsson Cuk style inverter with hysteretic control
TW519792B (en) * 2000-08-30 2003-02-01 Cirrus Logic Inc Circuits and methods for reducing interference from switched mode circuits
JP2003110369A (ja) 2001-09-27 2003-04-11 Hitachi Kokusai Electric Inc 歪み補償増幅装置
US6674325B2 (en) * 2002-05-14 2004-01-06 Windbond Electronics Corporation Balanced current converter with multiple pulse width modulated channels
CN100419614C (zh) * 2002-11-28 2008-09-17 华邦电子股份有限公司 具有平衡电流的多通道脉波宽度调变转换器
ATE485622T1 (de) * 2002-12-17 2010-11-15 Ask Ind Spa Audioleistungsverstärker
AU2003285740A1 (en) * 2002-12-23 2004-07-14 Elop Electro-Optical Industries Ltd. Method and apparatus for efficient amplification
US6984969B1 (en) 2003-03-20 2006-01-10 Analog Devices, Inc. High efficiency high speed low noise regulator
JP4589665B2 (ja) * 2003-08-29 2010-12-01 ルネサスエレクトロニクス株式会社 増幅器及びそれを用いた高周波電力増幅器
US7339426B2 (en) * 2004-03-19 2008-03-04 Powerwave Technologies, Inc. High efficiency linear amplifier employing dynamically controlled back off
US7440733B2 (en) * 2004-04-09 2008-10-21 Powerwave Technologies, Inc. Constant gain nonlinear envelope tracking high efficiency linear amplifier
EP1875603A1 (en) * 2005-04-20 2008-01-09 Nxp B.V. A power supply system.
DE102006032181B3 (de) * 2006-07-12 2007-10-18 Zinoviy, Lerner, Dipl.-Ing. Der Leistungsverstärker
GB2440772B (en) * 2006-08-08 2011-11-30 Asahi Chemical Micro Syst Envelope modulator
EP2063531A4 (en) * 2006-09-14 2015-07-22 Nec Corp REINFORCEMENT UNIT, EXIT CONTROL PROCEDURE AND CONTROL PROGRAM
JP5022792B2 (ja) * 2007-07-02 2012-09-12 株式会社日立国際電気 Ｄｃｄｃコンバータユニット、電力増幅器、及び基地局装置
GB2459894A (en) * 2008-05-09 2009-11-11 Nujira Ltd Switched supply stage with feedback
JP6115477B2 (ja) * 2012-02-03 2017-04-19 日本電気株式会社 電源装置及びこれを用いた送信装置
US8952753B2 (en) 2012-02-17 2015-02-10 Quantance, Inc. Dynamic power supply employing a linear driver and a switching regulator
US8890502B2 (en) 2012-02-17 2014-11-18 Quantance, Inc. Low-noise, high bandwidth quasi-resonant mode switching power supply
GB2510397A (en) 2013-02-01 2014-08-06 Nujira Ltd Envelope tracking power supply with feedback
US10284217B1 (en) 2014-03-05 2019-05-07 Cirrus Logic, Inc. Multi-path analog front end and analog-to-digital converter for a signal processing system
FR3023088B1 (fr) * 2014-06-25 2016-07-22 Devialet Amplificateur audio
US9959856B2 (en) 2015-06-15 2018-05-01 Cirrus Logic, Inc. Systems and methods for reducing artifacts and improving performance of a multi-path analog-to-digital converter
US9880802B2 (en) 2016-01-21 2018-01-30 Cirrus Logic, Inc. Systems and methods for reducing audio artifacts from switching between paths of a multi-path signal processing system
US9998826B2 (en) 2016-06-28 2018-06-12 Cirrus Logic, Inc. Optimization of performance and power in audio system
US10545561B2 (en) 2016-08-10 2020-01-28 Cirrus Logic, Inc. Multi-path digitation based on input signal fidelity and output requirements
US10263630B2 (en) 2016-08-11 2019-04-16 Cirrus Logic, Inc. Multi-path analog front end with adaptive path
US9929703B1 (en) * 2016-09-27 2018-03-27 Cirrus Logic, Inc. Amplifier with configurable final output stage
US9967665B2 (en) 2016-10-05 2018-05-08 Cirrus Logic, Inc. Adaptation of dynamic range enhancement based on noise floor of signal
US10321230B2 (en) 2017-04-07 2019-06-11 Cirrus Logic, Inc. Switching in an audio system with multiple playback paths
US10008992B1 (en) 2017-04-14 2018-06-26 Cirrus Logic, Inc. Switching in amplifier with configurable final output stage
US9917557B1 (en) * 2017-04-17 2018-03-13 Cirrus Logic, Inc. Calibration for amplifier with configurable final output stage
US11095264B2 (en) 2017-12-20 2021-08-17 Dolby Laboratories Licensing Corporation Configurable modal amplifier system
US10727792B1 (en) * 2019-06-27 2020-07-28 Echowell Electronic Co., Ltd. Vacuum tube and transistor amplifier natural sound field tone dividing system

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US3573644A (en) * 1969-03-20 1971-04-06 Hewlett Packard Co Dc stabilized wide band amplifier
JPS5229141A (en) * 1975-08-30 1977-03-04 Toshiba Corp Amplifier
US4240036A (en) * 1979-04-13 1980-12-16 General Electric Company Linearized three-state switching amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010508577A (ja) * 2006-10-30 2010-03-18 クアンタンス， インコーポレイテッド 電力を結合する電源システム
JP2012234560A (ja) * 2006-10-30 2012-11-29 Quantace Inc 電力を結合する電源システム
US9281783B2 (en) 2009-03-31 2016-03-08 Quantance, Inc. High speed power supply system

Also Published As

Publication number Publication date
US4346349A (en) 1982-08-24
JPS55149512A (en) 1980-11-20
DE3017521C2 (de) 1987-02-12
DE3017521A1 (de) 1980-11-13

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