JPS5394162A - Power amplifier - Google Patents

Power amplifier

Info

Publication number
JPS5394162A
JPS5394162A JP771977A JP771977A JPS5394162A JP S5394162 A JPS5394162 A JP S5394162A JP 771977 A JP771977 A JP 771977A JP 771977 A JP771977 A JP 771977A JP S5394162 A JPS5394162 A JP S5394162A
Authority
JP
Japan
Prior art keywords
power amplifier
active element
voltage
lpf
amplification
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
JP771977A
Other languages
Japanese (ja)
Inventor
Toru Sanbe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP771977A priority Critical patent/JPS5394162A/en
Publication of JPS5394162A publication Critical patent/JPS5394162A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

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

Abstract

PURPOSE:To vary the voltage to be applied to the active element in accordance with the scale of the input signal by inserting the switching element and LPF between the power source and the active element for amplification, and thus to reduce the voltage loss of the active element and then to increase the element efficiency.
JP771977A 1977-01-28 1977-01-28 Power amplifier Pending JPS5394162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP771977A JPS5394162A (en) 1977-01-28 1977-01-28 Power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP771977A JPS5394162A (en) 1977-01-28 1977-01-28 Power amplifier

Publications (1)

Publication Number Publication Date
JPS5394162A true JPS5394162A (en) 1978-08-17

Family

ID=11673527

Family Applications (1)

Application Number Title Priority Date Filing Date
JP771977A Pending JPS5394162A (en) 1977-01-28 1977-01-28 Power amplifier

Country Status (1)

Country Link
JP (1) JPS5394162A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56168406A (en) * 1980-05-29 1981-12-24 Pioneer Electronic Corp Power supply circuit of amplifying element
JPS57166710A (en) * 1981-04-06 1982-10-14 Tadao Totsuka Power amplifying circuit
JPS57173204A (en) * 1981-04-18 1982-10-25 Pioneer Electronic Corp Power supplying circuit for amplifying element
JPS58107065A (en) * 1981-12-17 1983-06-25 Pioneer Electronic Corp Chopper type power supply circuit
US4472687A (en) * 1980-12-24 1984-09-18 Tokyo Shibaura Denki Kabushiki Kaisha Audio power amplifier for supplying electric power to a load by switching of power supply voltage
US5396194A (en) * 1993-11-19 1995-03-07 Carver Corporation Audio frequency power amplifiers
US5543753A (en) * 1994-06-22 1996-08-06 Carver Corporation Audio frequency power amplifiers with actively damped filter
US5606289A (en) * 1994-06-22 1997-02-25 Carver Corporation Audio frequency power amplifiers with actively damped filter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56168406A (en) * 1980-05-29 1981-12-24 Pioneer Electronic Corp Power supply circuit of amplifying element
US4472687A (en) * 1980-12-24 1984-09-18 Tokyo Shibaura Denki Kabushiki Kaisha Audio power amplifier for supplying electric power to a load by switching of power supply voltage
JPS57166710A (en) * 1981-04-06 1982-10-14 Tadao Totsuka Power amplifying circuit
JPS57173204A (en) * 1981-04-18 1982-10-25 Pioneer Electronic Corp Power supplying circuit for amplifying element
JPS58107065A (en) * 1981-12-17 1983-06-25 Pioneer Electronic Corp Chopper type power supply circuit
US5396194A (en) * 1993-11-19 1995-03-07 Carver Corporation Audio frequency power amplifiers
US5543753A (en) * 1994-06-22 1996-08-06 Carver Corporation Audio frequency power amplifiers with actively damped filter
US5606289A (en) * 1994-06-22 1997-02-25 Carver Corporation Audio frequency power amplifiers with actively damped filter

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