JPS6480108A - Base current compensation circuit - Google Patents

Base current compensation circuit

Info

Publication number
JPS6480108A
JPS6480108A JP62236763A JP23676387A JPS6480108A JP S6480108 A JPS6480108 A JP S6480108A JP 62236763 A JP62236763 A JP 62236763A JP 23676387 A JP23676387 A JP 23676387A JP S6480108 A JPS6480108 A JP S6480108A
Authority
JP
Japan
Prior art keywords
current
base
trsq26
amplifier circuit
differential amplifier
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
JP62236763A
Other languages
Japanese (ja)
Inventor
Toru Amamoto
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
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 filed Critical Toshiba Corp
Priority to JP62236763A priority Critical patent/JPS6480108A/en
Publication of JPS6480108A publication Critical patent/JPS6480108A/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
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for

Landscapes

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

Abstract

PURPOSE:To eliminate the limit of a load circuit connected to a collector by feeding back a base current of a transistor(TR) whose emitter connects to a constant current source to a base of a differential amplifier circuit via a current mirror circuit to compensate the base current in the differential amplifier circuit used for a voltage input - current output amplifier circuit or the like. CONSTITUTION:An input voltage vi fed to input terminals 24, 25 is fed to a differential amplifier circuit 27 comprising NPN TRsQ26, Q27 and a constant current source 26 and an output current i0 is obtained from the collector of the TRQ27. The same current as the sum of base currents of the TRsQ26, Q27 is produced on the base of the NPN TRQ28 by the action of the constant current source 28 supplying the same constant current as the constant current source 26 and the base current is fed back to the bases of the TRsQ26, Q27 via TRsQ29, Q30 being components of the current mirror circuit 29 and PNP TRsQ31, Q32 to reduce the current flowing to the TRsQ26, Q27, Q31, Q32 and the collector potential of the TRsQ26, Q27 being components of the differential amplifier circuit has no limit.
JP62236763A 1987-09-21 1987-09-21 Base current compensation circuit Pending JPS6480108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62236763A JPS6480108A (en) 1987-09-21 1987-09-21 Base current compensation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62236763A JPS6480108A (en) 1987-09-21 1987-09-21 Base current compensation circuit

Publications (1)

Publication Number Publication Date
JPS6480108A true JPS6480108A (en) 1989-03-27

Family

ID=17005431

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62236763A Pending JPS6480108A (en) 1987-09-21 1987-09-21 Base current compensation circuit

Country Status (1)

Country Link
JP (1) JPS6480108A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH031707A (en) * 1989-05-30 1991-01-08 Sharp Corp Base current compensation circuit
JPH03145809A (en) * 1989-10-31 1991-06-21 Nec Corp High dielectric strength driving circuit
US5341108A (en) * 1991-12-16 1994-08-23 Alcatel N.V. Amplifier biasing circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH031707A (en) * 1989-05-30 1991-01-08 Sharp Corp Base current compensation circuit
JPH03145809A (en) * 1989-10-31 1991-06-21 Nec Corp High dielectric strength driving circuit
US5341108A (en) * 1991-12-16 1994-08-23 Alcatel N.V. Amplifier biasing circuit

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