FR2408948A1 - Source de courant pour differentiel - Google Patents

Source de courant pour differentiel

Info

Publication number
FR2408948A1
FR2408948A1 FR7832136A FR7832136A FR2408948A1 FR 2408948 A1 FR2408948 A1 FR 2408948A1 FR 7832136 A FR7832136 A FR 7832136A FR 7832136 A FR7832136 A FR 7832136A FR 2408948 A1 FR2408948 A1 FR 2408948A1
Authority
FR
France
Prior art keywords
amplifier
current source
differential
output
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
FR7832136A
Other languages
English (en)
Other versions
FR2408948B1 (fr
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.)
The General Electric Company PLC
Original Assignee
The General Electric Company PLC
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 The General Electric Company PLC filed Critical The General Electric Company PLC
Publication of FR2408948A1 publication Critical patent/FR2408948A1/fr
Application granted granted Critical
Publication of FR2408948B1 publication Critical patent/FR2408948B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6025—Substation equipment, e.g. for use by subscribers including speech amplifiers implemented as integrated speech networks
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • G05F1/561—Voltage to current converters
    • 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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/083—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements in transistor amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)

Abstract

L'INVENTION CONCERNE LES SOURCES DE COURANT. ELLE SE RAPPORTE A UNE SOURCE DE COURANT COMPRENANT UN AMPLIFICATEUR 1 ET UN SEUL TRANSISTOR 2 DE SORTIE, COMPRENANT AU MOINS DEUX TRAJETS DE REACTION ENTRE L'EMETTEUR 7 DU TRANSISTOR ET L'AMPLIFICATEUR 1 D'UNE PART ET ENTRE LA SORTIE ET L'ENTREE DE L'AMPLIFICATEUR 1 D'AUTRE PART. L'INTENSITE DU COURANT DU CIRCUIT DE SORTIE DEPEND TRES PEU DU GAIN DE L'ETAGE D'AMPLIFICATION. APPLICATION AUX DIFFERENTIELS DES CIRCUITS TELEPHONIQUES.
FR7832136A 1977-11-15 1978-11-14 Source de courant pour differentiel Granted FR2408948A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4747577A GB1602296A (en) 1977-11-15 1977-11-15 Current sources

Publications (2)

Publication Number Publication Date
FR2408948A1 true FR2408948A1 (fr) 1979-06-08
FR2408948B1 FR2408948B1 (fr) 1984-05-04

Family

ID=10445118

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7832136A Granted FR2408948A1 (fr) 1977-11-15 1978-11-14 Source de courant pour differentiel

Country Status (6)

Country Link
BE (1) BE872025A (fr)
CA (1) CA1135349A (fr)
FR (1) FR2408948A1 (fr)
GB (1) GB1602296A (fr)
NL (1) NL7811241A (fr)
WO (1) WO1979000295A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135846B (en) * 1983-02-04 1986-03-12 Standard Telephones Cables Ltd Current splitter
NL8400508A (nl) * 1984-02-17 1985-09-16 Philips Nv Audiotransmissiecircuit met als lijnspanningsstabilisator uitgevoerde zendversterker.
NL8500674A (nl) * 1985-03-11 1986-10-01 Philips Nv Als lijnspanningsstabilisator uitgevoerde zendversterker met veranderbare referentiespanning.
JPH0826911B2 (ja) * 1990-02-07 1996-03-21 三菱電機株式会社 自動車用電磁クラツチ電流制御装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960660A (en) * 1957-06-07 1960-11-15 Lenkurt Electric Co Inc Feedback amplifier circuit
US3979688A (en) * 1974-05-15 1976-09-07 Analog Devices, Inc. Transistor amplifier of the Darlington type with internal bias providing low offset voltage and offset current drift
DE2626570A1 (de) * 1976-06-14 1977-12-22 Sachs Systemtechnik Gmbh Vorrichtung zur regelung und ueberwachung der stromversorgung eines wasserentkeimungsgeraetes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960660A (en) * 1957-06-07 1960-11-15 Lenkurt Electric Co Inc Feedback amplifier circuit
US3979688A (en) * 1974-05-15 1976-09-07 Analog Devices, Inc. Transistor amplifier of the Darlington type with internal bias providing low offset voltage and offset current drift
DE2626570A1 (de) * 1976-06-14 1977-12-22 Sachs Systemtechnik Gmbh Vorrichtung zur regelung und ueberwachung der stromversorgung eines wasserentkeimungsgeraetes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 10, no. 7, décembre 1967, NEW YORK (US) *

Also Published As

Publication number Publication date
FR2408948B1 (fr) 1984-05-04
GB1602296A (en) 1981-11-11
NL7811241A (nl) 1979-05-17
BE872025A (fr) 1979-03-01
WO1979000295A1 (fr) 1979-05-31
CA1135349A (fr) 1982-11-09

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Legal Events

Date Code Title Description
ST Notification of lapse