JPS57155815A - Double feedback type uninterruptible amplifying circuit - Google Patents

Double feedback type uninterruptible amplifying circuit

Info

Publication number
JPS57155815A
JPS57155815A JP56040645A JP4064581A JPS57155815A JP S57155815 A JPS57155815 A JP S57155815A JP 56040645 A JP56040645 A JP 56040645A JP 4064581 A JP4064581 A JP 4064581A JP S57155815 A JPS57155815 A JP S57155815A
Authority
JP
Japan
Prior art keywords
feedback loop
feedback
parallel connection
circuit
amplifying circuit
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
JP56040645A
Other languages
Japanese (ja)
Inventor
Hidemi Kuramitsu
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56040645A priority Critical patent/JPS57155815A/en
Publication of JPS57155815A publication Critical patent/JPS57155815A/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
    • H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics

Abstract

PURPOSE:To avoid the change in feedback loop gain for in single and parallel connection, by adding the 2nd feedback loop only when two amplifying sections are in parallel connection. CONSTITUTION:A feedback loop consisting of a feedback circuit 8 is provided from an output coupling circuit 4 to an input coupling circuit 2 in addition to a main feedback loop consisting of a feedback circuit 6, and this feedback loop is operated only when amplifying sections 3 and 3' are in parallel connection. Thus, in case of a single connection, the feedback loop by the feedback circuit 8 can not be constituted. Through a suitable setting of the 2nd feedback loop by the feedback circuit 8, the increment of the gain at parallel connection of the amplifying sections can be absorbed, allowing to prevent the increase in the gain of the main feedback loop at parallel connection.
JP56040645A 1981-03-21 1981-03-21 Double feedback type uninterruptible amplifying circuit Pending JPS57155815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56040645A JPS57155815A (en) 1981-03-21 1981-03-21 Double feedback type uninterruptible amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56040645A JPS57155815A (en) 1981-03-21 1981-03-21 Double feedback type uninterruptible amplifying circuit

Publications (1)

Publication Number Publication Date
JPS57155815A true JPS57155815A (en) 1982-09-27

Family

ID=12586286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56040645A Pending JPS57155815A (en) 1981-03-21 1981-03-21 Double feedback type uninterruptible amplifying circuit

Country Status (1)

Country Link
JP (1) JPS57155815A (en)

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