GB0400614D0 - Power amplifier arrangement - Google Patents

Power amplifier arrangement

Info

Publication number
GB0400614D0
GB0400614D0 GB0400614A GB0400614A GB0400614D0 GB 0400614 D0 GB0400614 D0 GB 0400614D0 GB 0400614 A GB0400614 A GB 0400614A GB 0400614 A GB0400614 A GB 0400614A GB 0400614 D0 GB0400614 D0 GB 0400614D0
Authority
GB
United Kingdom
Prior art keywords
power amplifier
amplifier arrangement
arrangement
power
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.)
Withdrawn
Application number
GB0400614A
Other versions
GB2410142A (en
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.)
SCOTT GORDON L
Original Assignee
SCOTT GORDON L
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 SCOTT GORDON L filed Critical SCOTT GORDON L
Priority to GB0400614A priority Critical patent/GB2410142A/en
Publication of GB0400614D0 publication Critical patent/GB0400614D0/en
Publication of GB2410142A publication Critical patent/GB2410142A/en
Withdrawn legal-status Critical Current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
    • H03F1/307—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in push-pull 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
    • H03F1/02—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
    • H03F1/0261—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 polarisation voltage or current, e.g. gliding Class A
    • 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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3217—Modifications of amplifiers to reduce non-linear distortion in single ended push-pull amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3066—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the collectors of complementary power transistors being connected to the output
    • 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
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/30—Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor
    • H03F2203/30015—An input signal dependent control signal controls the bias of an output stage in the SEPP
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/30—Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor
    • H03F2203/30027—Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor the SEPP bias voltage being controlled by a control signal from a feedback circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/30—Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor
    • H03F2203/30078—A resistor being added in the pull stage of the SEPP amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/30—Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor
    • H03F2203/30111—A resistor being added in the push stage of the SEPP amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
GB0400614A 2004-01-13 2004-01-13 An audio power amplifier with automatic class selection Withdrawn GB2410142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0400614A GB2410142A (en) 2004-01-13 2004-01-13 An audio power amplifier with automatic class selection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0400614A GB2410142A (en) 2004-01-13 2004-01-13 An audio power amplifier with automatic class selection

Publications (2)

Publication Number Publication Date
GB0400614D0 true GB0400614D0 (en) 2004-02-11
GB2410142A GB2410142A (en) 2005-07-20

Family

ID=31503776

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0400614A Withdrawn GB2410142A (en) 2004-01-13 2004-01-13 An audio power amplifier with automatic class selection

Country Status (1)

Country Link
GB (1) GB2410142A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7679450B2 (en) 2008-02-14 2010-03-16 Infineon Technologies Ag Amplifier auto biasing
GB2462445A (en) * 2008-08-06 2010-02-10 Kbo Dynamics Ltd Microprocessor-controlled bias adjustment in a thermionic valve audio amplifier
GB2547707B (en) 2016-02-26 2020-04-08 Entotem Ltd Controlling a power amplification stage of an audio signal amplifier
GR1008934B (en) * 2016-04-25 2017-01-24 Κωνσταντινος Γεωργιου Παπαχρηστου Electronic arrangement for the automatic regulation of current polarisation in transistors of single-supply audio amplifiers

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5422859B2 (en) * 1972-12-30 1979-08-09
JPS5832801B2 (en) * 1976-02-10 1983-07-15 ヤマハ株式会社 power amplifier
JPS5797209A (en) * 1980-12-08 1982-06-16 Marantz Japan Inc Power amplifying circuit
JPS58114608A (en) * 1981-12-28 1983-07-08 Nec Home Electronics Ltd Variable bias circuit
JPH0865061A (en) * 1994-08-24 1996-03-08 Nippon Columbia Co Ltd Idling current control circuit
JPH1127059A (en) * 1997-06-27 1999-01-29 Kenwood Corp Idling control circuit for a-class amplifier
JP3460040B2 (en) * 1997-06-27 2003-10-27 株式会社ケンウッド Amplifier circuit
JPH1127056A (en) * 1997-06-27 1999-01-29 Kenwood Corp Idling control circuit for a-class amplifier
JP3508813B2 (en) * 1997-06-27 2004-03-22 株式会社ケンウッド Idling adjustment circuit of class A amplifier
JP3460041B2 (en) * 1997-08-29 2003-10-27 株式会社ケンウッド Amplifier circuit
GB2374220B (en) * 2001-01-17 2004-08-04 Jeffrey Peter Macaulay Simple efficient class a output stage

Also Published As

Publication number Publication date
GB2410142A (en) 2005-07-20

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)