JPS55102909A - Differential amplifier circuit - Google Patents

Differential amplifier circuit

Info

Publication number
JPS55102909A
JPS55102909A JP1084779A JP1084779A JPS55102909A JP S55102909 A JPS55102909 A JP S55102909A JP 1084779 A JP1084779 A JP 1084779A JP 1084779 A JP1084779 A JP 1084779A JP S55102909 A JPS55102909 A JP S55102909A
Authority
JP
Japan
Prior art keywords
output
signal
decrease
increase
emitters
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.)
Granted
Application number
JP1084779A
Other languages
Japanese (ja)
Other versions
JPS6052603B2 (en
Inventor
Tatsumi Sumi
Tsuneo Okubo
Shigeru Nakajima
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1084779A priority Critical patent/JPS6052603B2/en
Publication of JPS55102909A publication Critical patent/JPS55102909A/en
Publication of JPS6052603B2 publication Critical patent/JPS6052603B2/en
Expired 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
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only

Landscapes

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

Abstract

PURPOSE:To suppress an increase in distortion and decrease in output by preventing modulation output from being saturated by the common connection point of emitters of 1st and 2nd transistors to a current sucking-out terminal via current source varying in a monotone. CONSTITUTION:Transistor Tr1 is applied with an AM signal at its base, Tr2 is also applied at its base with an AM signal out of phase with the AM signal or a DC voltage, and the collector of TR2 is connected to output terminal 11 via resistance 8. Common connection point X of emitters of Tr1 and Tr2 is connected to current sucking-out terminal 15 via current source 14 which varies monotonously in inversely-relative current according to an increase or decrease in the mean value of output voltages developed at output terminals 5 and 6 or in the mean value of the difference of output voltage. Consequently, even when a strong AM signal arrives, the saturation of modulation output is prevented and an increase in distortion and decrease in output can be suppressed.
JP1084779A 1979-02-01 1979-02-01 differential amplifier circuit Expired JPS6052603B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1084779A JPS6052603B2 (en) 1979-02-01 1979-02-01 differential amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1084779A JPS6052603B2 (en) 1979-02-01 1979-02-01 differential amplifier circuit

Publications (2)

Publication Number Publication Date
JPS55102909A true JPS55102909A (en) 1980-08-06
JPS6052603B2 JPS6052603B2 (en) 1985-11-20

Family

ID=11761737

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1084779A Expired JPS6052603B2 (en) 1979-02-01 1979-02-01 differential amplifier circuit

Country Status (1)

Country Link
JP (1) JPS6052603B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62141805A (en) * 1985-12-13 1987-06-25 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Hybrid uhf amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62141805A (en) * 1985-12-13 1987-06-25 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Hybrid uhf amplifier

Also Published As

Publication number Publication date
JPS6052603B2 (en) 1985-11-20

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