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
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)
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)
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 |
US11208590B2 (en) | 2016-11-01 | 2021-12-28 | Pfp Technology, Llc | Compositions and methods for stabilizing water sensitive clays and migrating fines in subterranean formations |
Family Cites Families (10)
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 |
-
1973
- 1973-03-12 IT IT67674/73A patent/IT980548B/it active
- 1973-11-14 DE DE2356826A patent/DE2356826A1/de active Pending
-
1974
- 1974-01-15 ES ES422307A patent/ES422307A1/es not_active Expired
-
1975
- 1975-10-06 US US05/619,905 patent/US4028505A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2356826A1 (de) | 1974-09-26 |
IT980548B (it) | 1974-10-10 |
US4028505A (en) | 1977-06-07 |
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