BE790791A - Transformateur pour lignes telephoniques - Google Patents

Transformateur pour lignes telephoniques

Info

Publication number
BE790791A
BE790791A BE790791DA BE790791A BE 790791 A BE790791 A BE 790791A BE 790791D A BE790791D A BE 790791DA BE 790791 A BE790791 A BE 790791A
Authority
BE
Belgium
Prior art keywords
transformer
telephone lines
telephone
lines
Prior art date
Application number
Other languages
English (en)
Inventor
N Montefuscoet M Manca
Original Assignee
Sits Soc It Telecom Siemens
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.)
Publication date
Publication of BE790791A publication Critical patent/BE790791A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/46—One-port networks
    • H03H11/48—One-port networks simulating reactances
    • H03H11/485—Simulating inductances using operational amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/46—One-port networks
    • H03H11/52—One-port networks simulating negative resistances

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
BE790791D 1972-02-29 Transformateur pour lignes telephoniques BE790791A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT21157/72A IT951804B (it) 1972-02-29 1972-02-29 Traslatore per linee telefoniche

Publications (1)

Publication Number Publication Date
BE790791A true BE790791A (fr) 1973-02-15

Family

ID=11177593

Family Applications (1)

Application Number Title Priority Date Filing Date
BE790791D BE790791A (fr) 1972-02-29 Transformateur pour lignes telephoniques

Country Status (7)

Country Link
US (1) US3843943A (fr)
BE (1) BE790791A (fr)
DE (1) DE2307015A1 (fr)
FR (1) FR2173899B1 (fr)
GB (1) GB1405166A (fr)
IT (1) IT951804B (fr)
NL (1) NL7302513A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51113439A (en) * 1975-03-28 1976-10-06 Yokogawa Hokushin Electric Corp Negative impedance circuit
FR2462006A1 (fr) * 1979-07-20 1981-02-06 Ibm France Dispositif pour augmenter l'inductance parallele d'un transformateur
DE3007791A1 (de) * 1980-02-29 1981-09-10 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur erhoehung der induktivitaet eines uebertragers
US5740241A (en) * 1995-05-12 1998-04-14 Carrier Access Corporation T1 channel bank control process and apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH366309A (it) * 1955-08-10 1962-12-31 S T I P E L Societa Telefonica Dispositivo d'amplificazione ad impedenza negativa
US2941041A (en) * 1955-10-25 1960-06-14 Philips Corp Arrangement for transmitting audiofrequency signals and ringing signals below the audio-frequency band
US3061790A (en) * 1960-02-16 1962-10-30 Rca Corp Signal detectors
US3108231A (en) * 1960-02-29 1963-10-22 Rca Corp Negative resistance amplifier
US3243740A (en) * 1960-10-20 1966-03-29 Westinghouse Electric Corp Reactance enhancing networks
US3344285A (en) * 1965-01-19 1967-09-26 Tektronix Inc Ramp generator and comparator circuit employing non-saturating gate
US3493901A (en) * 1968-03-05 1970-02-03 Nasa Gyrator type circuit
CA939016A (en) * 1972-02-02 1973-12-25 T. Lim Jin Active delay-equalizer network

Also Published As

Publication number Publication date
GB1405166A (en) 1975-09-03
FR2173899A1 (fr) 1973-10-12
NL7302513A (fr) 1973-08-31
DE2307015A1 (de) 1973-10-04
FR2173899B1 (fr) 1976-10-29
US3843943A (en) 1974-10-22
IT951804B (it) 1973-07-10

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