JPS5253252A - Constant current circuit - Google Patents

Constant current circuit

Info

Publication number
JPS5253252A
JPS5253252A JP12960775A JP12960775A JPS5253252A JP S5253252 A JPS5253252 A JP S5253252A JP 12960775 A JP12960775 A JP 12960775A JP 12960775 A JP12960775 A JP 12960775A JP S5253252 A JPS5253252 A JP S5253252A
Authority
JP
Japan
Prior art keywords
constant current
current circuit
constant
held
constant value
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
JP12960775A
Other languages
Japanese (ja)
Inventor
Yasuhiro Nanba
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP12960775A priority Critical patent/JPS5253252A/en
Priority to DE19762647640 priority patent/DE2647640A1/en
Publication of JPS5253252A publication Critical patent/JPS5253252A/en
Pending 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
    • G05F3/26—Current mirrors
    • G05F3/265—Current mirrors using bipolar transistors only

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)
  • Control Of Electrical Variables (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE: Electric current ratio currented to PN connections of two semi-conductors is held as a constant value, the difference of each both ends voltages of both PN connection is held as a constant value, and then, constant current can be obtained, based on a constant voltage.
COPYRIGHT: (C)1977,JPO&Japio
JP12960775A 1975-10-27 1975-10-27 Constant current circuit Pending JPS5253252A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP12960775A JPS5253252A (en) 1975-10-27 1975-10-27 Constant current circuit
DE19762647640 DE2647640A1 (en) 1975-10-27 1976-10-21 Constant current generator independent of ambient temp. - has transistors resistor and base current supply forming two currents kept at constant ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12960775A JPS5253252A (en) 1975-10-27 1975-10-27 Constant current circuit

Publications (1)

Publication Number Publication Date
JPS5253252A true JPS5253252A (en) 1977-04-28

Family

ID=15013630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12960775A Pending JPS5253252A (en) 1975-10-27 1975-10-27 Constant current circuit

Country Status (2)

Country Link
JP (1) JPS5253252A (en)
DE (1) DE2647640A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55123711A (en) * 1979-03-16 1980-09-24 Hitachi Ltd Constant-voltage circuit
JPS5654126A (en) * 1979-10-09 1981-05-14 Mitsubishi Electric Corp Bias circuit
JPS6059414A (en) * 1983-08-17 1985-04-05 テレフンケン・エレクトロニク・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Dc signal conversion circuit
JPS60116015A (en) * 1983-11-29 1985-06-22 Sony Corp Current generating method
US5175489A (en) * 1989-10-02 1992-12-29 Kabushiki Kaisha Toshiba Current-detecting circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2642512C2 (en) * 1976-09-22 1983-10-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit arrangement for stabilizing a direct current
NL8302458A (en) * 1983-07-11 1985-02-01 Philips Nv CURRENT STABILIZATION CIRCUIT.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040369A (en) * 1973-08-08 1975-04-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040369A (en) * 1973-08-08 1975-04-14

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55123711A (en) * 1979-03-16 1980-09-24 Hitachi Ltd Constant-voltage circuit
JPS5654126A (en) * 1979-10-09 1981-05-14 Mitsubishi Electric Corp Bias circuit
JPS6059414A (en) * 1983-08-17 1985-04-05 テレフンケン・エレクトロニク・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Dc signal conversion circuit
JP2545501B2 (en) * 1983-08-17 1996-10-23 テレフンケン・エレクトロニク・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング DC signal conversion circuit
JPS60116015A (en) * 1983-11-29 1985-06-22 Sony Corp Current generating method
US5175489A (en) * 1989-10-02 1992-12-29 Kabushiki Kaisha Toshiba Current-detecting circuit

Also Published As

Publication number Publication date
DE2647640A1 (en) 1977-04-28

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