JPS56153814A - Audio power amplifier - Google Patents

Audio power amplifier

Info

Publication number
JPS56153814A
JPS56153814A JP5550480A JP5550480A JPS56153814A JP S56153814 A JPS56153814 A JP S56153814A JP 5550480 A JP5550480 A JP 5550480A JP 5550480 A JP5550480 A JP 5550480A JP S56153814 A JPS56153814 A JP S56153814A
Authority
JP
Japan
Prior art keywords
load
working
negative feedback
transistor
instant value
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
JP5550480A
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 JP5550480A priority Critical patent/JPS56153814A/en
Publication of JPS56153814A publication Critical patent/JPS56153814A/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 obtain a high-quality reproduced sound, by controlling the working current flowing to the transistor of output stage via the load with a negative feedback circuit which forms a feedback loop separated from the load. CONSTITUTION:The working current I flowing to the transistor TR1 of output stage via the load Z is controlled by a negative feedback circuit which forms a feedback loop separated from load Z. The negative feedback circuit gives a negative feedback control to the current I by the audio input signal voltage V1 and the working voltage V2 that is applied to the output side of transistor TR1, i.e. applied between the collector and the emitter. Then the instant value of the working current, the instant value of the input signal voltage and the instant value of the working voltage are referred to as I, V1 and V2 respectively within the working range set previously to an audio amplifier. Thus I=K1V1+K2V2+K3 (K1, K2 and K3: constants) is satisfied to enhance the quality of reproduced sound.
JP5550480A 1980-04-28 1980-04-28 Audio power amplifier Pending JPS56153814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5550480A JPS56153814A (en) 1980-04-28 1980-04-28 Audio power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5550480A JPS56153814A (en) 1980-04-28 1980-04-28 Audio power amplifier

Publications (1)

Publication Number Publication Date
JPS56153814A true JPS56153814A (en) 1981-11-28

Family

ID=13000488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5550480A Pending JPS56153814A (en) 1980-04-28 1980-04-28 Audio power amplifier

Country Status (1)

Country Link
JP (1) JPS56153814A (en)

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