AU5838394A - Audio amplifiers - Google Patents

Audio amplifiers

Info

Publication number
AU5838394A
AU5838394A AU58383/94A AU5838394A AU5838394A AU 5838394 A AU5838394 A AU 5838394A AU 58383/94 A AU58383/94 A AU 58383/94A AU 5838394 A AU5838394 A AU 5838394A AU 5838394 A AU5838394 A AU 5838394A
Authority
AU
Australia
Prior art keywords
audio amplifiers
amplifiers
audio
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.)
Abandoned
Application number
AU58383/94A
Inventor
Bruce Keir
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.)
Marshall Amplification PLC
Original Assignee
Marshall Amplification PLC
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 Marshall Amplification PLC filed Critical Marshall Amplification PLC
Publication of AU5838394A publication Critical patent/AU5838394A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
    • H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors
    • 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
    • H03F1/0244—Stepped control
    • 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
    • H03F3/3069—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output
    • H03F3/3076—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output with symmetrical driving of the end stage
    • H03F3/3079—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output with symmetrical driving of the end stage using parallel power transistors
AU58383/94A 1993-01-14 1994-01-13 Audio amplifiers Abandoned AU5838394A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939300669A GB9300669D0 (en) 1993-01-14 1993-01-14 Audio amplifier
GB9300669 1993-01-14
PCT/GB1994/000064 WO1994016493A1 (en) 1993-01-14 1994-01-13 Audio amplifiers

Publications (1)

Publication Number Publication Date
AU5838394A true AU5838394A (en) 1994-08-15

Family

ID=10728712

Family Applications (1)

Application Number Title Priority Date Filing Date
AU58383/94A Abandoned AU5838394A (en) 1993-01-14 1994-01-13 Audio amplifiers

Country Status (5)

Country Link
EP (1) EP0630536A1 (en)
JP (1) JPH07504794A (en)
AU (1) AU5838394A (en)
GB (1) GB9300669D0 (en)
WO (1) WO1994016493A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE511959C2 (en) * 1997-04-21 1999-12-20 Ericsson Telefon Ab L M Power amplifier circuit and method for controlling the temperature of a transistor in a power amplifier circuit
US6822511B1 (en) * 2003-06-27 2004-11-23 Sige Semiconductor Inc. Integrated power amplifier circuit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2705604C3 (en) * 1976-02-12 1979-12-20 Hitachi, Ltd., Tokio NF power amplifier
JPS5935207B2 (en) * 1979-07-27 1984-08-27 ヤマハ株式会社 power amplifier
JPS56131209A (en) * 1980-03-18 1981-10-14 Sanyo Electric Co Ltd Power amplifying circuit
JPS56162515A (en) * 1980-05-20 1981-12-14 Sanyo Electric Co Ltd Power amplifying circuit
JPS5765914A (en) * 1980-10-13 1982-04-21 Toshiba Corp Noise reducing device
JPS58111507A (en) * 1981-12-25 1983-07-02 Nippon Gakki Seizo Kk Power amplifier

Also Published As

Publication number Publication date
EP0630536A1 (en) 1994-12-28
JPH07504794A (en) 1995-05-25
GB9300669D0 (en) 1993-03-03
WO1994016493A1 (en) 1994-07-21

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