JPS5469367A - Balanced output differencial amplifier - Google Patents

Balanced output differencial amplifier

Info

Publication number
JPS5469367A
JPS5469367A JP13705877A JP13705877A JPS5469367A JP S5469367 A JPS5469367 A JP S5469367A JP 13705877 A JP13705877 A JP 13705877A JP 13705877 A JP13705877 A JP 13705877A JP S5469367 A JPS5469367 A JP S5469367A
Authority
JP
Japan
Prior art keywords
voltage
feedback
output
amplifier
synchronous
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
JP13705877A
Other languages
Japanese (ja)
Inventor
Yasuto Goto
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 JP13705877A priority Critical patent/JPS5469367A/en
Publication of JPS5469367A publication Critical patent/JPS5469367A/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 satisfy load to be completely balanced by inserting differential output voltage from the final voltage amplifier stage individually into the bias circuit and taking out it. CONSTITUTION:In ETQ3 and Q4 constituting the 2nd stage differential amplifier of the complete balance output differential amplifier, input voltage to which negative feedback is applied to Q3 by the synchronous-phase component denying action of differential amplifier that feedback voltage applied from the power- amplifier stage constituted by Q11 to Q14 through feedback resistance denies output voltage of Q2. On the other hand, feedback voltage applied through R21 and R6 from power- amplifier stage Q7 to Q10 is applied to Q4 so that it denys output voltage of Q1. By making equal the quantity of negative feedback to Q3 and Q4, quantity of R7 and R8 and quantity of each voltage generated in the bias circuit, Q3 and Q4 operate with a completed balanced condition and the absolute value of output voltage applied to load resistance R7 and R8 coincides, so that synchronous- phase components are completely denied and distortion of synchronous-plase comoponents is cleared from output.
JP13705877A 1977-11-14 1977-11-14 Balanced output differencial amplifier Pending JPS5469367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13705877A JPS5469367A (en) 1977-11-14 1977-11-14 Balanced output differencial amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13705877A JPS5469367A (en) 1977-11-14 1977-11-14 Balanced output differencial amplifier

Publications (1)

Publication Number Publication Date
JPS5469367A true JPS5469367A (en) 1979-06-04

Family

ID=15189895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13705877A Pending JPS5469367A (en) 1977-11-14 1977-11-14 Balanced output differencial amplifier

Country Status (1)

Country Link
JP (1) JPS5469367A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208711A (en) * 1981-06-19 1982-12-21 Hitachi Ltd Power amplifier having one set inverted output
JPS58129717U (en) * 1982-02-25 1983-09-02 日本電気ホームエレクトロニクス株式会社 amplifier circuit
US5578966A (en) * 1995-04-25 1996-11-26 National Semiconductor Corporation Output stage for a high-speed video amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208711A (en) * 1981-06-19 1982-12-21 Hitachi Ltd Power amplifier having one set inverted output
JPS58129717U (en) * 1982-02-25 1983-09-02 日本電気ホームエレクトロニクス株式会社 amplifier circuit
US5578966A (en) * 1995-04-25 1996-11-26 National Semiconductor Corporation Output stage for a high-speed video amplifier

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