AT353851B - Schaltungsanordnung fuer eine fernsprechleitung mit einem negativimpedanzverstaerker - Google Patents

Schaltungsanordnung fuer eine fernsprechleitung mit einem negativimpedanzverstaerker

Info

Publication number
AT353851B
AT353851B AT682474A AT682474A AT353851B AT 353851 B AT353851 B AT 353851B AT 682474 A AT682474 A AT 682474A AT 682474 A AT682474 A AT 682474A AT 353851 B AT353851 B AT 353851B
Authority
AT
Austria
Prior art keywords
telephone line
circuit arrangement
impedance amplifier
negative impedance
negative
Prior art date
Application number
AT682474A
Other languages
English (en)
Other versions
ATA682474A (de
Original Assignee
Applic Elettrotelefoniche A E
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 Applic Elettrotelefoniche A E filed Critical Applic Elettrotelefoniche A E
Priority to AT682474A priority Critical patent/AT353851B/de
Priority to DE2453273A priority patent/DE2453273C2/de
Priority to US05/528,008 priority patent/US3974345A/en
Priority to IT69035/75A priority patent/IT1041486B/it
Priority to ES440331A priority patent/ES440331A1/es
Priority to BR7505329*A priority patent/BR7505329A/pt
Priority to FR7615883A priority patent/FR2353179A1/fr
Publication of ATA682474A publication Critical patent/ATA682474A/de
Application granted granted Critical
Publication of AT353851B publication Critical patent/AT353851B/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/16—Control of transmission; Equalising characterised by the negative-impedance network used
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
AT682474A 1974-08-21 1974-08-21 Schaltungsanordnung fuer eine fernsprechleitung mit einem negativimpedanzverstaerker AT353851B (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT682474A AT353851B (de) 1974-08-21 1974-08-21 Schaltungsanordnung fuer eine fernsprechleitung mit einem negativimpedanzverstaerker
DE2453273A DE2453273C2 (de) 1974-08-21 1974-11-09 Schaltungsanordnung für eine Fernsprechleitung mit einem Negativimpedanzverstärker
US05/528,008 US3974345A (en) 1974-08-21 1974-11-29 Negative impedance repeater with double amplification, for telephone lines
IT69035/75A IT1041486B (it) 1974-08-21 1975-08-05 Ripetitore a impedenza negativa con doppia amplificazione per linee telefoniche
ES440331A ES440331A1 (es) 1974-08-21 1975-08-19 Repetidor a impedancia negativa con compuestos heterocicli- cos derivados de doble amplificacion para linea telefnica a frecuencia vocal.
BR7505329*A BR7505329A (pt) 1974-08-21 1975-08-20 Repetidor de impedancia negativa para linha telefonica
FR7615883A FR2353179A1 (fr) 1974-08-21 1976-05-26 Repeteur a impedance negative avec double amplification, pour lignes telephoniques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT682474A AT353851B (de) 1974-08-21 1974-08-21 Schaltungsanordnung fuer eine fernsprechleitung mit einem negativimpedanzverstaerker

Publications (2)

Publication Number Publication Date
ATA682474A ATA682474A (de) 1979-05-15
AT353851B true AT353851B (de) 1979-12-10

Family

ID=3590144

Family Applications (1)

Application Number Title Priority Date Filing Date
AT682474A AT353851B (de) 1974-08-21 1974-08-21 Schaltungsanordnung fuer eine fernsprechleitung mit einem negativimpedanzverstaerker

Country Status (7)

Country Link
US (1) US3974345A (de)
AT (1) AT353851B (de)
BR (1) BR7505329A (de)
DE (1) DE2453273C2 (de)
ES (1) ES440331A1 (de)
FR (1) FR2353179A1 (de)
IT (1) IT1041486B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT353851B (de) * 1974-08-21 1979-12-10 Applic Elettrotelefoniche A E Schaltungsanordnung fuer eine fernsprechleitung mit einem negativimpedanzverstaerker
US4527073A (en) * 1983-11-22 1985-07-02 Carroll William R Shielded electrical cable system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT180588B (de) * 1936-12-05 1954-12-27 Western Electric Co Schaltung zur Herstellung einer rauscharmen Impedanz vorbestimmter Größe
CH366309A (it) * 1955-08-10 1962-12-31 S T I P E L Societa Telefonica Dispositivo d'amplificazione ad impedenza negativa
US3024324A (en) * 1960-04-27 1962-03-06 Automatic Elect Lab Negative impedance repeater
US3187266A (en) * 1960-09-12 1965-06-01 Rca Corp Impedance inverter coupled negative resistance amplifiers
ES327315A1 (es) * 1965-05-31 1967-03-16 A E T Applicazioni Elettro-Telefoniche Amplificador tipo serie con impedancia negativa.
US3503002A (en) * 1965-07-05 1970-03-24 Cesare Valfre Transistor negative impedance amplifier,stable in short circuit,particularly for telephone systems
US3860767A (en) * 1972-09-26 1975-01-14 Garrett Jim C Voice frequency repeater
AT353851B (de) * 1974-08-21 1979-12-10 Applic Elettrotelefoniche A E Schaltungsanordnung fuer eine fernsprechleitung mit einem negativimpedanzverstaerker

Also Published As

Publication number Publication date
ES440331A1 (es) 1977-03-01
DE2453273A1 (de) 1976-03-04
FR2353179A1 (fr) 1977-12-23
US3974345A (en) 1976-08-10
DE2453273C2 (de) 1982-06-03
IT1041486B (it) 1980-01-10
BR7505329A (pt) 1976-08-03
ATA682474A (de) 1979-05-15

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