IT8023020A0 - Dispositivo per aumentare l'induttanza in parallelo di trasformatori di linee telefoniche. - Google Patents
Dispositivo per aumentare l'induttanza in parallelo di trasformatori di linee telefoniche.Info
- Publication number
- IT8023020A0 IT8023020A0 IT8023020A IT2302080A IT8023020A0 IT 8023020 A0 IT8023020 A0 IT 8023020A0 IT 8023020 A IT8023020 A IT 8023020A IT 2302080 A IT2302080 A IT 2302080A IT 8023020 A0 IT8023020 A0 IT 8023020A0
- Authority
- IT
- Italy
- Prior art keywords
- inductance
- parallel
- increase
- telephone line
- line transformers
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
- H04Q3/521—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F19/00—Fixed transformers or mutual inductances of the signal type
-
- 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)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
- Coils Or Transformers For Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7919131A FR2462006A1 (fr) | 1979-07-20 | 1979-07-20 | Dispositif pour augmenter l'inductance parallele d'un transformateur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT8023020A0 true IT8023020A0 (it) | 1980-06-26 |
| IT1151017B IT1151017B (it) | 1986-12-17 |
Family
ID=9228260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT23020/80A IT1151017B (it) | 1979-07-20 | 1980-06-26 | Dispositivo per aumentare l'induttanza in parallelo di trasformatori di linee telefoniche |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4336423A (it) |
| EP (1) | EP0022938B1 (it) |
| JP (1) | JPS5618402A (it) |
| AU (1) | AU533622B2 (it) |
| CA (1) | CA1141454A (it) |
| DE (1) | DE3069214D1 (it) |
| FR (1) | FR2462006A1 (it) |
| IL (1) | IL60193A (it) |
| IT (1) | IT1151017B (it) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3007791A1 (de) * | 1980-02-29 | 1981-09-10 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur erhoehung der induktivitaet eines uebertragers |
| SE450677B (sv) * | 1982-04-01 | 1987-07-13 | Ericsson Telefon Ab L M | Matningskrets ingaende i en likstromsmagnetiserad gaffeltransformator |
| FR2552288B1 (fr) * | 1983-09-15 | 1989-03-24 | Telecommunications Sa | Joncteur d'abonne telephonique |
| DE3513625A1 (de) * | 1985-04-16 | 1986-10-23 | Nixdorf Computer Ag, 4790 Paderborn | Schaltungsanordnung fuer die fernspeisung von teilnehmeranschluss-endgeraeten in fernmeldeanlagen |
| US4674936A (en) * | 1985-08-26 | 1987-06-23 | Asyst Technologies | Short arm manipulator for standard mechanical interface apparatus |
| GB2270241B (en) * | 1992-08-28 | 1995-05-31 | Electronic Tech | Duplex communication coupler system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2946855A (en) * | 1958-04-30 | 1960-07-26 | Bell Telephone Labor Inc | Electrical circuit for communication networks |
| AU2587971A (en) * | 1970-03-13 | 1972-08-31 | TELETTRA LABORATORY DI TELEFONICA ELETTRONICA E RADIOS. Pa | System and device tomake electronic semiconductors crosspoints |
| US3684975A (en) * | 1970-07-10 | 1972-08-15 | Cesare Valfre | Negative impedance amplifier |
| BE790791A (fr) * | 1972-02-29 | 1973-02-15 | Sits Soc It Telecom Siemens | Transformateur pour lignes telephoniques |
| US3816668A (en) * | 1972-11-15 | 1974-06-11 | Bell Telephone Labor Inc | Arrangement for providing switched range extension |
| US3828281A (en) * | 1973-02-26 | 1974-08-06 | Lorain Prod Corp | Impedance simulating circuit for transmission lines |
| CA1013080A (en) * | 1973-11-13 | 1977-06-28 | Gte Automatic Electric Laboratories Incorporated | Communication system interface circuits |
| DE2419357C3 (de) * | 1974-04-22 | 1982-02-11 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung zur Entdämpfung von elektronischen Schaltern, insbesondere von Halbleiterkoppelelementen einer Fernsprechvermittlungsstelle |
| US3927280A (en) * | 1974-05-13 | 1975-12-16 | Wescom | Negative impedance repeater |
| US3993880A (en) * | 1976-02-09 | 1976-11-23 | Bell Telephone Laboratories, Incorporated | Resistive battery feed for line circuits |
-
1979
- 1979-07-20 FR FR7919131A patent/FR2462006A1/fr active Pending
-
1980
- 1980-05-27 CA CA000352841A patent/CA1141454A/en not_active Expired
- 1980-05-29 IL IL60193A patent/IL60193A/xx unknown
- 1980-06-04 AU AU59044/80A patent/AU533622B2/en not_active Ceased
- 1980-06-24 EP EP80103547A patent/EP0022938B1/fr not_active Expired
- 1980-06-24 DE DE8080103547T patent/DE3069214D1/de not_active Expired
- 1980-06-26 IT IT23020/80A patent/IT1151017B/it active
- 1980-07-10 US US06/167,573 patent/US4336423A/en not_active Expired - Lifetime
- 1980-07-18 JP JP9767180A patent/JPS5618402A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0241228B2 (it) | 1990-09-17 |
| US4336423A (en) | 1982-06-22 |
| CA1141454A (en) | 1983-02-15 |
| AU533622B2 (en) | 1983-12-01 |
| JPS5618402A (en) | 1981-02-21 |
| AU5904480A (en) | 1981-01-22 |
| FR2462006A1 (fr) | 1981-02-06 |
| IT1151017B (it) | 1986-12-17 |
| IL60193A0 (en) | 1980-07-31 |
| DE3069214D1 (en) | 1984-10-25 |
| IL60193A (en) | 1982-11-30 |
| EP0022938A1 (fr) | 1981-01-28 |
| EP0022938B1 (fr) | 1984-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| IT1091748B (it) | Dispositivo per l'impiego con scambiatori di calore | |
| IT8019348A0 (it) | Dispositivo per l'accumulazione dicalore. | |
| IT1064367B (it) | Dispositivo per ridurre l'usura di cavitazione | |
| IT7927808A0 (it) | Dispositivo per l'accoppiamento di bacchette di avvolgimento. | |
| IT8023020A0 (it) | Dispositivo per aumentare l'induttanza in parallelo di trasformatori di linee telefoniche. | |
| IT7824605A0 (it) | Dispositivo per l'addestramento di puntatori per carrarmati. | |
| IT1164705B (it) | Composti furanici sostituiti dotati di proprieta' farmacollogiche | |
| BE883195A (fr) | Circuit pour ligne d'abonne | |
| IT8122996A0 (it) | Dispositivo per l'addensamento difibre. | |
| IT1129566B (it) | Dispositivo per identificare documenti | |
| IT8022642A0 (it) | Apparecchio per l'azionamento di valvole | |
| IT1113880B (it) | Induttore d'arresto | |
| ITNA910037A0 (it) | Vetrino per microcultura pronto all'impiego. | |
| IT7924169A0 (it) | Apparecchiatura di distribuzione di gas per l'impiego con letti fluidificati. | |
| IT1082513B (it) | Dispositivo per l'allevamento di crostacei | |
| IT8025176A0 (it) | L'impiego in elettroprecipitatori. struttura di elettrodo per | |
| IT1110784B (it) | Dispositivo di serraggio d'un pezzo | |
| BE883955A (fr) | "limnimetre" | |
| IT1088711B (it) | Dispositivo d'impilaggio | |
| IT8022110V0 (it) | Dispositivo per aumentare la stabilita' di apparecchi elettrici per uso domestico. | |
| IT1084719B (it) | Dispositivo per segnalare l'interruzione dello stato di pronto alla ricezione in terminali-dati con scambio dei nominativi | |
| IT1130690B (it) | Trasduttore di velocita' induttivo | |
| IT8235682V0 (it) | Dispositivo di pastura solidale alla lenza | |
| IT1082781B (it) | Dispositivo per l'alimentazione di filtri in dispositivi di protezione elettrica | |
| IT1164744B (it) | Composti cicloalifatici dotati di proprieta' analgesiche e procedimento per la loro preparazione |