FR2364565A1 - Amplificateur a transistors a resistance interne elevee - Google Patents

Amplificateur a transistors a resistance interne elevee

Info

Publication number
FR2364565A1
FR2364565A1 FR7727762A FR7727762A FR2364565A1 FR 2364565 A1 FR2364565 A1 FR 2364565A1 FR 7727762 A FR7727762 A FR 7727762A FR 7727762 A FR7727762 A FR 7727762A FR 2364565 A1 FR2364565 A1 FR 2364565A1
Authority
FR
France
Prior art keywords
internal resistance
transistor amplifier
high internal
resistance transistor
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.)
Withdrawn
Application number
FR7727762A
Other languages
English (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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of FR2364565A1 publication Critical patent/FR2364565A1/fr
Withdrawn legal-status Critical Current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
    • H03F1/38—Positive-feedback circuit arrangements without negative feedback
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Networks Using Active Elements (AREA)

Abstract

Amplificateur à transistors à résistance interne élevée variable. L'accroissement de la résistance interne est obtenu à l'aide d'une réaction positive du collecteur sur la base du transistor de sortie de l'amplificateur à transistors 4, à l'aide d'un circuit miroir de courant 21 en particulier.
FR7727762A 1976-09-14 1977-09-14 Amplificateur a transistors a resistance interne elevee Withdrawn FR2364565A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762641336 DE2641336C3 (de) 1976-09-14 1976-09-14 Transistorverstärker mit hohem Innenwiderstand

Publications (1)

Publication Number Publication Date
FR2364565A1 true FR2364565A1 (fr) 1978-04-07

Family

ID=5987875

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7727762A Withdrawn FR2364565A1 (fr) 1976-09-14 1977-09-14 Amplificateur a transistors a resistance interne elevee

Country Status (6)

Country Link
CH (1) CH619085A5 (fr)
DE (1) DE2641336C3 (fr)
FR (1) FR2364565A1 (fr)
GB (1) GB1589442A (fr)
IT (1) IT1087817B (fr)
NL (1) NL7709650A (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2207233A1 (de) * 1971-02-16 1972-09-14 Rca Corp Elektronischer Signalverstärker

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015071A (en) * 1959-04-15 1961-12-26 Bell Telephone Labor Inc Broadband amplifier using vacuum tubes and transistors

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2207233A1 (de) * 1971-02-16 1972-09-14 Rca Corp Elektronischer Signalverstärker

Also Published As

Publication number Publication date
GB1589442A (en) 1981-05-13
DE2641336A1 (de) 1978-03-16
NL7709650A (nl) 1978-03-16
CH619085A5 (en) 1980-08-29
DE2641336C3 (de) 1981-08-13
DE2641336B2 (de) 1980-11-20
IT1087817B (it) 1985-06-04

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Legal Events

Date Code Title Description
RE Withdrawal of published application