JPS5268945A - Constant-current circuit - Google Patents

Constant-current circuit

Info

Publication number
JPS5268945A
JPS5268945A JP14501975A JP14501975A JPS5268945A JP S5268945 A JPS5268945 A JP S5268945A JP 14501975 A JP14501975 A JP 14501975A JP 14501975 A JP14501975 A JP 14501975A JP S5268945 A JPS5268945 A JP S5268945A
Authority
JP
Japan
Prior art keywords
constant
current circuit
supply voltage
current
arranging
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
JP14501975A
Other languages
Japanese (ja)
Other versions
JPS6037485B2 (en
Inventor
Ryohei Saga
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14501975A priority Critical patent/JPS6037485B2/en
Priority to DE19762655401 priority patent/DE2655401A1/en
Publication of JPS5268945A publication Critical patent/JPS5268945A/en
Publication of JPS6037485B2 publication Critical patent/JPS6037485B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/22—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only
    • G05F3/222—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only with compensation for device parameters, e.g. Early effect, gain, manufacturing process, or external variations, e.g. temperature, loading, supply voltage
    • G05F3/227—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only with compensation for device parameters, e.g. Early effect, gain, manufacturing process, or external variations, e.g. temperature, loading, supply voltage producing a current or voltage as a predetermined function of the supply voltage
    • 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
    • H03F3/347—DC amplifiers in which all stages are DC-coupled with semiconductor devices only in integrated circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE: To obtain a highly stable constant-current irrespective of the variation of the supply voltage by arranging a constant-current means between the base of the specific transistor and the supply voltage terminal.
COPYRIGHT: (C)1977,JPO&Japio
JP14501975A 1975-12-08 1975-12-08 constant current circuit Expired JPS6037485B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP14501975A JPS6037485B2 (en) 1975-12-08 1975-12-08 constant current circuit
DE19762655401 DE2655401A1 (en) 1975-12-08 1976-12-07 Small constant current generator - uses two transistors and has several resistors of related size

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14501975A JPS6037485B2 (en) 1975-12-08 1975-12-08 constant current circuit

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP14494883A Division JPS5962928A (en) 1983-08-10 1983-08-10 Constant current circuit

Publications (2)

Publication Number Publication Date
JPS5268945A true JPS5268945A (en) 1977-06-08
JPS6037485B2 JPS6037485B2 (en) 1985-08-27

Family

ID=15375540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14501975A Expired JPS6037485B2 (en) 1975-12-08 1975-12-08 constant current circuit

Country Status (2)

Country Link
JP (1) JPS6037485B2 (en)
DE (1) DE2655401A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6174018A (en) * 1984-09-18 1986-04-16 New Japan Radio Co Ltd Constant current circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4547881A (en) * 1983-11-09 1985-10-15 Advanced Micro Devices, Inc. ECL Logic circuit with a circuit for dynamically switchable low drop current source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6174018A (en) * 1984-09-18 1986-04-16 New Japan Radio Co Ltd Constant current circuit

Also Published As

Publication number Publication date
JPS6037485B2 (en) 1985-08-27
DE2655401A1 (en) 1977-06-23

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