JPS572107A - Power supply circuit of electric power amplifier - Google Patents

Power supply circuit of electric power amplifier

Info

Publication number
JPS572107A
JPS572107A JP7530880A JP7530880A JPS572107A JP S572107 A JPS572107 A JP S572107A JP 7530880 A JP7530880 A JP 7530880A JP 7530880 A JP7530880 A JP 7530880A JP S572107 A JPS572107 A JP S572107A
Authority
JP
Japan
Prior art keywords
supplied
power supply
electric power
reference voltages
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.)
Pending
Application number
JP7530880A
Other languages
Japanese (ja)
Inventor
Masamichi Yumino
Akio Ozawa
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP7530880A priority Critical patent/JPS572107A/en
Publication of JPS572107A publication Critical patent/JPS572107A/en
Pending 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
    • H03F1/0244—Stepped control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To ensure a high efficiency and at the same time to reduce the switching distortion, by varying successively the power supply voltage to be applied to a B- class electric power amplifier that drives a speaker or the like and in accordance with the input signal level and thus reducing the collector loss. CONSTITUTION:The input signal voltage VIN applied to a terminal IN is delayed by a prescribed amount through a delaying circuit 1 and supplied to an electric power amplifier 2 as well as to comparators 3-8 to be compared with reference voltages B1-B3 and -B1--B3. The positive reference voltages B1-B3 are set to increase successively, and the absolute value is set in the same way for the negative reference voltages. The comparison outputs S11-S16 are supplied to control signal generating circuits 9-14 to produce control signals S21-S26 having the gentle rise and fall waveforms. These control signals are supplied to switching means SW1-SW6. The voltages V0-V3 and -V0--V3 of a power supply voltage generating circuit 15 are supplied to an amplifier via the means SW1-SW6. In such constitution, the switching distortion is suppressed to reduce the collector loss.
JP7530880A 1980-06-04 1980-06-04 Power supply circuit of electric power amplifier Pending JPS572107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7530880A JPS572107A (en) 1980-06-04 1980-06-04 Power supply circuit of electric power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7530880A JPS572107A (en) 1980-06-04 1980-06-04 Power supply circuit of electric power amplifier

Publications (1)

Publication Number Publication Date
JPS572107A true JPS572107A (en) 1982-01-07

Family

ID=13572487

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7530880A Pending JPS572107A (en) 1980-06-04 1980-06-04 Power supply circuit of electric power amplifier

Country Status (1)

Country Link
JP (1) JPS572107A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58141609U (en) * 1982-03-18 1983-09-24 三洋電機株式会社 Amplifier
US4831334A (en) * 1987-06-08 1989-05-16 Hughes Aircraft Company Envelope amplifier
WO2004019486A1 (en) * 2002-08-21 2004-03-04 Siemens Aktiengesellschaft A power amplifier system
EP1020025B1 (en) * 1997-10-07 2011-04-20 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Method and apparatus for reducing power dissipation in multi-carrier amplifiers
WO2014033811A1 (en) * 2012-08-27 2014-03-06 三菱電機株式会社 Class-g amplifier circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4826772U (en) * 1971-08-02 1973-03-31
JPS5158047A (en) * 1974-11-18 1976-05-21 Mitsubishi Electric Corp KOKORITSUZO FUKUSOCHI
JPS51132746A (en) * 1975-05-14 1976-11-18 Sansui Electric Co Amplifier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4826772U (en) * 1971-08-02 1973-03-31
JPS5158047A (en) * 1974-11-18 1976-05-21 Mitsubishi Electric Corp KOKORITSUZO FUKUSOCHI
JPS51132746A (en) * 1975-05-14 1976-11-18 Sansui Electric Co Amplifier

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58141609U (en) * 1982-03-18 1983-09-24 三洋電機株式会社 Amplifier
US4831334A (en) * 1987-06-08 1989-05-16 Hughes Aircraft Company Envelope amplifier
JPH01503587A (en) * 1987-06-08 1989-11-30 ヒューズ・エアクラフト・カンパニー High frequency amplification device with envelope amplification means
EP1020025B1 (en) * 1997-10-07 2011-04-20 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Method and apparatus for reducing power dissipation in multi-carrier amplifiers
WO2004019486A1 (en) * 2002-08-21 2004-03-04 Siemens Aktiengesellschaft A power amplifier system
CN100431262C (en) * 2002-08-21 2008-11-05 诺基亚西门子通信有限责任两合公司 A power amplifier system
WO2014033811A1 (en) * 2012-08-27 2014-03-06 三菱電機株式会社 Class-g amplifier circuit
JP5851617B2 (en) * 2012-08-27 2016-02-03 三菱電機株式会社 Class G amplifier circuit

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