DK1777814T3 - Fremgangsmåder og apparat til skifte mellem klasse A- og A/B-drift af en effektforstærker - Google Patents

Fremgangsmåder og apparat til skifte mellem klasse A- og A/B-drift af en effektforstærker

Info

Publication number
DK1777814T3
DK1777814T3 DK06076871.0T DK06076871T DK1777814T3 DK 1777814 T3 DK1777814 T3 DK 1777814T3 DK 06076871 T DK06076871 T DK 06076871T DK 1777814 T3 DK1777814 T3 DK 1777814T3
Authority
DK
Denmark
Prior art keywords
class
switching
methods
power amplifier
phase
Prior art date
Application number
DK06076871.0T
Other languages
English (en)
Inventor
John Calvin Fields
Hartley D Peavey
Original Assignee
Peavey Electronics 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 Peavey Electronics Corp filed Critical Peavey Electronics Corp
Application granted granted Critical
Publication of DK1777814T3 publication Critical patent/DK1777814T3/da

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • 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
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes 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
    • 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
    • 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
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes only
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/27—A biasing circuit node being switched in an amplifier circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/421—Multiple switches coupled in the output circuit of an amplifier are controlled by a circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/541—Transformer coupled at the output of an 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
    • H03F2203/20—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F2203/21—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F2203/211—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • H03F2203/21145—Output signals are combined by switching a plurality of paralleled power amplifiers to a common output

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
DK06076871.0T 2005-10-12 2006-10-12 Fremgangsmåder og apparat til skifte mellem klasse A- og A/B-drift af en effektforstærker DK1777814T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/248,533 US7053714B1 (en) 2005-10-12 2005-10-12 Methods and apparatus for switching between class A and A/B operation in a power amplifier

Publications (1)

Publication Number Publication Date
DK1777814T3 true DK1777814T3 (da) 2011-10-17

Family

ID=36462638

Family Applications (1)

Application Number Title Priority Date Filing Date
DK06076871.0T DK1777814T3 (da) 2005-10-12 2006-10-12 Fremgangsmåder og apparat til skifte mellem klasse A- og A/B-drift af en effektforstærker

Country Status (4)

Country Link
US (1) US7053714B1 (da)
EP (1) EP1777814B1 (da)
AT (1) ATE518300T1 (da)
DK (1) DK1777814T3 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8155348B2 (en) * 2008-09-30 2012-04-10 David William Bray Post phase-inverter volume control
US8766082B2 (en) * 2010-12-21 2014-07-01 Mesa/Boogie, Ltd. Amplifier with selectable master control
RU2635270C1 (ru) * 2017-01-10 2017-11-09 Алексей Юрьевич Моисеев Усилитель мощности звуковой частоты

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1495534A (fr) * 1966-07-29 1967-09-22 Thomson Houston Comp Francaise Perfectionnements aux amplificateurs de puissance à transistors
JPS5422859B2 (da) 1972-12-30 1979-08-09
CH554616A (de) * 1973-01-24 1974-09-30 Patelhold Patentverwertung Schaltungsanordnung zur u be-kompensation bei gegentakt ab-verstaerkern.
JP4166318B2 (ja) * 1998-03-25 2008-10-15 松下電器産業株式会社 電力増幅器
US6323733B1 (en) * 2000-03-30 2001-11-27 Nortel Networks Limited High efficiency dual supply power amplifier
US6856199B2 (en) 2000-10-10 2005-02-15 California Institute Of Technology Reconfigurable distributed active transformers
US7412064B2 (en) * 2002-03-21 2008-08-12 Smith Randall C Presence control for guitar amplifier

Also Published As

Publication number Publication date
EP1777814B1 (en) 2011-07-27
ATE518300T1 (de) 2011-08-15
EP1777814A2 (en) 2007-04-25
EP1777814A3 (en) 2008-03-05
US7053714B1 (en) 2006-05-30

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