JPS5738008A - Output amplifier - Google Patents

Output amplifier

Info

Publication number
JPS5738008A
JPS5738008A JP11300880A JP11300880A JPS5738008A JP S5738008 A JPS5738008 A JP S5738008A JP 11300880 A JP11300880 A JP 11300880A JP 11300880 A JP11300880 A JP 11300880A JP S5738008 A JPS5738008 A JP S5738008A
Authority
JP
Japan
Prior art keywords
amplifier
resistor
gain
output
error 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
JP11300880A
Other languages
Japanese (ja)
Inventor
Shigeki Inoue
Kazuhiro Tasaka
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 JP11300880A priority Critical patent/JPS5738008A/en
Publication of JPS5738008A publication Critical patent/JPS5738008A/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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback

Landscapes

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

Abstract

PURPOSE:To improve the DC offset and distortion at the same time, by improving the distortion through taking the output of an error amplifier amplifying distorted content as a feedback signal of an output amplifier and increasing the DC gain through grounding the DC input of an error amplifier. CONSTITUTION:The output of an amplifier 2 is split at resistors 9, 10 and applied to a + side input of an error amplifier 8. The - side input of the error amplifier 8 is grounded via a resistor 13, and since a resistor 14 is smaller than the resistor 13, an input signal applied to a terminal 1 is given to the - side input. On the other hand, a capacitor 11 is for DC blocking and the DC offset component is improved by increasing the DC gain of the amplifier 8. The AC gain of the amplifier 8 is decided with the resistors 12 and 14.
JP11300880A 1980-08-19 1980-08-19 Output amplifier Pending JPS5738008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11300880A JPS5738008A (en) 1980-08-19 1980-08-19 Output amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11300880A JPS5738008A (en) 1980-08-19 1980-08-19 Output amplifier

Publications (1)

Publication Number Publication Date
JPS5738008A true JPS5738008A (en) 1982-03-02

Family

ID=14601118

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11300880A Pending JPS5738008A (en) 1980-08-19 1980-08-19 Output amplifier

Country Status (1)

Country Link
JP (1) JPS5738008A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919244A (en) * 1982-07-24 1984-01-31 Pioneer Electronic Corp Focus servo device of information reader
JPS5948112U (en) * 1982-09-21 1984-03-30 日本コロムビア株式会社 amplifier
EP0398065A2 (en) * 1989-05-19 1990-11-22 STMicroelectronics S.r.l. Monolithically integratable differential operational amplifier
EP0427135A2 (en) * 1989-11-08 1991-05-15 STMicroelectronics S.r.l. Circuit for sensing output distortion, in particular of final stages of audio devices
DE4141016A1 (en) * 1991-06-17 1992-12-24 Pioneer Electronic Corp REINFORCEMENT DEVICE
JP2014161214A (en) * 2013-02-13 2014-09-04 Valeo Systemes De Controle Moteur Method for reducing common mode current
JP2020043466A (en) * 2018-09-11 2020-03-19 アキュフェーズ株式会社 Amplifier circuit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919244A (en) * 1982-07-24 1984-01-31 Pioneer Electronic Corp Focus servo device of information reader
JPS5948112U (en) * 1982-09-21 1984-03-30 日本コロムビア株式会社 amplifier
EP0398065A2 (en) * 1989-05-19 1990-11-22 STMicroelectronics S.r.l. Monolithically integratable differential operational amplifier
EP0427135A2 (en) * 1989-11-08 1991-05-15 STMicroelectronics S.r.l. Circuit for sensing output distortion, in particular of final stages of audio devices
DE4141016A1 (en) * 1991-06-17 1992-12-24 Pioneer Electronic Corp REINFORCEMENT DEVICE
JP2014161214A (en) * 2013-02-13 2014-09-04 Valeo Systemes De Controle Moteur Method for reducing common mode current
JP2020043466A (en) * 2018-09-11 2020-03-19 アキュフェーズ株式会社 Amplifier circuit

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