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FR2239717A1 - High impedance constant current regulator - has low temperature coefficient and controls with low voltages and high currents - Google Patents

High impedance constant current regulator - has low temperature coefficient and controls with low voltages and high currents

Info

Publication number
FR2239717A1
FR2239717A1 FR7328327A FR7328327A FR2239717A1 FR 2239717 A1 FR2239717 A1 FR 2239717A1 FR 7328327 A FR7328327 A FR 7328327A FR 7328327 A FR7328327 A FR 7328327A FR 2239717 A1 FR2239717 A1 FR 2239717A1
Authority
FR
France
Prior art keywords
resistor
current
controls
constant current
effect transistor
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
FR7328327A
Other languages
French (fr)
Other versions
FR2239717B1 (en
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.)
ROUVES FRANCIS
Original Assignee
ROUVES FRANCIS
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 ROUVES FRANCIS filed Critical ROUVES FRANCIS
Priority to FR7328327A priority Critical patent/FR2239717A1/en
Publication of FR2239717A1 publication Critical patent/FR2239717A1/en
Application granted granted Critical
Publication of FR2239717B1 publication Critical patent/FR2239717B1/fr
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

Difficulties of obtaining a regulated current source of high impedance and at low voltages independent of the current are overcome by a circuit suitable for applications such as current and power protection of semiconductor circuits. Current variations in a sensing resistor (1) cause a potential difference to be generated across it. Corrections for temperature effects are obtained from a thermistor (8) and resistor (7) connected in series across the sensing resistor (1). The voltage across the former resistor (7) is applied between the gate and source of a fluid effect transistor (4). A second field effect transistor (3), in association with a resistor (5) for correcting the sign of the output impedance, couples the first field effect transistor to two Darlington connected transistors (2, 6) in series with the sensing resistor. These transistors correct for the current variations.
FR7328327A 1973-08-02 1973-08-02 High impedance constant current regulator - has low temperature coefficient and controls with low voltages and high currents Granted FR2239717A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7328327A FR2239717A1 (en) 1973-08-02 1973-08-02 High impedance constant current regulator - has low temperature coefficient and controls with low voltages and high currents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7328327A FR2239717A1 (en) 1973-08-02 1973-08-02 High impedance constant current regulator - has low temperature coefficient and controls with low voltages and high currents

Publications (2)

Publication Number Publication Date
FR2239717A1 true FR2239717A1 (en) 1975-02-28
FR2239717B1 FR2239717B1 (en) 1976-05-14

Family

ID=9123514

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7328327A Granted FR2239717A1 (en) 1973-08-02 1973-08-02 High impedance constant current regulator - has low temperature coefficient and controls with low voltages and high currents

Country Status (1)

Country Link
FR (1) FR2239717A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380728A (en) * 1981-05-19 1983-04-19 General Motors Corporation Circuit for generating a temperature stabilized output signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380728A (en) * 1981-05-19 1983-04-19 General Motors Corporation Circuit for generating a temperature stabilized output signal

Also Published As

Publication number Publication date
FR2239717B1 (en) 1976-05-14

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BR Restoration of rights
ST Notification of lapse