JPS5783913A - Current amplifying circuit - Google Patents

Current amplifying circuit

Info

Publication number
JPS5783913A
JPS5783913A JP55160229A JP16022980A JPS5783913A JP S5783913 A JPS5783913 A JP S5783913A JP 55160229 A JP55160229 A JP 55160229A JP 16022980 A JP16022980 A JP 16022980A JP S5783913 A JPS5783913 A JP S5783913A
Authority
JP
Japan
Prior art keywords
input
reference voltage
currents
current
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
JP55160229A
Other languages
Japanese (ja)
Inventor
Katsumi Nagano
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55160229A priority Critical patent/JPS5783913A/en
Publication of JPS5783913A publication Critical patent/JPS5783913A/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
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only

Landscapes

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

Abstract

PURPOSE:To equalize potentials at two current input terminals to that at a reference voltage terminal, by providing the reference voltage terminal to a differential input type current amplifying circuit. CONSTITUTION:Input currents i1 and i2 are applied to the emitters of transistors (TR)Q2 and Q1, and an input reference voltage Vref is applied to the emitter of a TRQ3, so that output currents from the collectors of TRs Q5 and Q6, i.e. a difference current i0 between input currents i1 and i2 appear at an output terminal out. When two input currents i1 and i2 are much less than a bias current, the baas-emitter voltages of the TRs Q1, Q2 and Q3 are nearly equal, and voltages at input terminals + and - are equal to the reference voltage Vref.
JP55160229A 1980-11-14 1980-11-14 Current amplifying circuit Pending JPS5783913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55160229A JPS5783913A (en) 1980-11-14 1980-11-14 Current amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55160229A JPS5783913A (en) 1980-11-14 1980-11-14 Current amplifying circuit

Publications (1)

Publication Number Publication Date
JPS5783913A true JPS5783913A (en) 1982-05-26

Family

ID=15710490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55160229A Pending JPS5783913A (en) 1980-11-14 1980-11-14 Current amplifying circuit

Country Status (1)

Country Link
JP (1) JPS5783913A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015095830A (en) * 2013-11-13 2015-05-18 株式会社東芝 Differential amplification circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015095830A (en) * 2013-11-13 2015-05-18 株式会社東芝 Differential amplification circuit

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