ES422307A1 - Repetido de impedancia negativa para la amplificacion de lineas telefonicas de frecuencia vocal. - Google Patents

Repetido de impedancia negativa para la amplificacion de lineas telefonicas de frecuencia vocal.

Info

Publication number
ES422307A1
ES422307A1 ES422307A ES422307A ES422307A1 ES 422307 A1 ES422307 A1 ES 422307A1 ES 422307 A ES422307 A ES 422307A ES 422307 A ES422307 A ES 422307A ES 422307 A1 ES422307 A1 ES 422307A1
Authority
ES
Spain
Prior art keywords
lines
repeater
impedance
converters
stable
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.)
Expired
Application number
ES422307A
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.)
Applic Elettro Telefoniche S N
Original Assignee
Applic Elettro Telefoniche S N
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 Elettro Telefoniche S N filed Critical Applic Elettro Telefoniche S N
Publication of ES422307A1 publication Critical patent/ES422307A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/40—Impedance converters
    • H03H11/44—Negative impedance converters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Amplifiers (AREA)
ES422307A 1973-03-12 1974-01-15 Repetido de impedancia negativa para la amplificacion de lineas telefonicas de frecuencia vocal. Expired ES422307A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT67674/73A IT980548B (it) 1973-03-12 1973-03-12 Ripetitore ad impedenza negativa per linee telefoniche

Publications (1)

Publication Number Publication Date
ES422307A1 true ES422307A1 (es) 1976-05-01

Family

ID=11304397

Family Applications (1)

Application Number Title Priority Date Filing Date
ES422307A Expired ES422307A1 (es) 1973-03-12 1974-01-15 Repetido de impedancia negativa para la amplificacion de lineas telefonicas de frecuencia vocal.

Country Status (4)

Country Link
US (1) US4028505A (es)
DE (1) DE2356826A1 (es)
ES (1) ES422307A1 (es)
IT (1) IT980548B (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1181541A (en) * 1982-05-21 1985-01-22 Mitel Corporation Loudspeaking telephone
JPS5974715A (ja) * 1982-10-22 1984-04-27 Nippon Resuko:Kk 双方向増幅器
US4554504A (en) * 1984-04-30 1985-11-19 Reliance Electric Company Negative resistance compensated transformer
US5249224A (en) * 1987-11-04 1993-09-28 Chambers Charles W Methods and apparatus for providing reciprocal impedance conversion
US4942603A (en) * 1987-11-04 1990-07-17 Chambers Charles W Methods and apparatus for providing reciprocal impedance conversion
US5131028A (en) * 1987-11-04 1992-07-14 Chambers Charles W Methods and apparatus for providing reciprocal impedance conversion
JP6465091B2 (ja) * 2016-09-30 2019-02-06 トヨタ自動車株式会社 二軸押出混練装置およびそれを用いた電極ペーストの製造方法
WO2018085387A1 (en) 2016-11-01 2018-05-11 Pfp Technology, Llc Compositions and methods for stabilizing water sensitive clays and migrating fines in subterranean formations

Family Cites Families (10)

* 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
US2998581A (en) * 1958-06-09 1961-08-29 Automatic Elect Lab Negative impedance repeaters having gain controls
US3042759A (en) * 1959-08-05 1962-07-03 Bell Telephone Labor Inc Negative impedance repeaters
US3024324A (en) * 1960-04-27 1962-03-06 Automatic Elect Lab Negative impedance repeater
ES327315A1 (es) * 1965-05-31 1967-03-16 A E T Applicazioni Elettro-Telefoniche Amplificador tipo serie con impedancia negativa.
US3684975A (en) * 1970-07-10 1972-08-15 Cesare Valfre Negative impedance amplifier
US3814866A (en) * 1971-09-30 1974-06-04 Reliable Electric Co Negative resistance repeater
US3860767A (en) * 1972-09-26 1975-01-14 Garrett Jim C Voice frequency repeater
CA987040A (en) * 1973-08-08 1976-04-06 Peter G. Junek Enhancing impedance characteristics of negative impedance repeaters operating at high gain
US3927280A (en) * 1974-05-13 1975-12-16 Wescom Negative impedance repeater

Also Published As

Publication number Publication date
IT980548B (it) 1974-10-10
DE2356826A1 (de) 1974-09-26
US4028505A (en) 1977-06-07

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