JPS574605A - Audio power amplifier - Google Patents

Audio power amplifier

Info

Publication number
JPS574605A
JPS574605A JP7836980A JP7836980A JPS574605A JP S574605 A JPS574605 A JP S574605A JP 7836980 A JP7836980 A JP 7836980A JP 7836980 A JP7836980 A JP 7836980A JP S574605 A JPS574605 A JP S574605A
Authority
JP
Japan
Prior art keywords
output
voltage
signal
input
arithmetic
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
JP7836980A
Other languages
Japanese (ja)
Inventor
Masaki Yoshimura
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP7836980A priority Critical patent/JPS574605A/en
Publication of JPS574605A publication Critical patent/JPS574605A/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 prevent a distrubance of output due to a disturbance of impedance, by producing a product signal with the output current and the output voltage of an audio power amplifier and controlling the output voltage so that the product signal output follows an input signal. CONSTITUTION:The voltage signal Vi produced across a minor resistance Ri is properly amplified and then multiplied by a coefficient to be led to the arithmetic input at one side of a multiplying circuit M. On the other hand, the voltage signal is multiplied by the coefficient which is obtained by voltage-dividing properly to the output voltage Vo emerging at an output terminal of an amplifier A, and then led to the other arithmetic input of the circuit M. The arithmetic output Vf of the circuit M is applied to the reverse input (-) of the amplifier A. As a result, the voltage Vo receives a negative feedback control so that the output Vf follows an input signal Vs.
JP7836980A 1980-06-12 1980-06-12 Audio power amplifier Pending JPS574605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7836980A JPS574605A (en) 1980-06-12 1980-06-12 Audio power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7836980A JPS574605A (en) 1980-06-12 1980-06-12 Audio power amplifier

Publications (1)

Publication Number Publication Date
JPS574605A true JPS574605A (en) 1982-01-11

Family

ID=13660088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7836980A Pending JPS574605A (en) 1980-06-12 1980-06-12 Audio power amplifier

Country Status (1)

Country Link
JP (1) JPS574605A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014050006A (en) * 2012-09-03 2014-03-17 Korg Inc Headphone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014050006A (en) * 2012-09-03 2014-03-17 Korg Inc Headphone

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