ES455345A1 - Perfeccionamientos en prolongadores de alcanos de intesifi- cacion de baterias. - Google Patents
Perfeccionamientos en prolongadores de alcanos de intesifi- cacion de baterias.Info
- Publication number
- ES455345A1 ES455345A1 ES455345A ES455345A ES455345A1 ES 455345 A1 ES455345 A1 ES 455345A1 ES 455345 A ES455345 A ES 455345A ES 455345 A ES455345 A ES 455345A ES 455345 A1 ES455345 A1 ES 455345A1
- Authority
- ES
- Spain
- Prior art keywords
- line
- telephone line
- boost circuit
- potentials
- central office
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/001—Current supply source at the exchanger providing current to substations
- H04M19/006—Circuits for increasing the range of current supply source
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
Perfeccionamientos en prolongadores de alcance de intensificación de baterias, del tipo que comprenden sensores de corriente para detectar la dirección del flujo de corriente en una línea de transmisión, y elementos de conmutación para introducir de una forma controlada potencial de intensificación en la línea con el fin de ayudar en serie a un potencial alimentado a la línea, caracterizados porque dichos prolongadores comprenden medios para almacenar una representación de la dirección última detectada del flujo de corriente, y medios que responden a dicha representación almacenada de dicha última dirección detectada de flujo de corriente procedente de dichos medios de almacenamiento y la dirección actualmente detectada del flujo de corriente procedente de los sensores de corriente, para retardar de una forma controlable la introducción de potencial de intensificación en la línea solamente cuando se produce una inversión en la dirección del flujo de corriente.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/652,051 US4024351A (en) | 1976-01-26 | 1976-01-26 | Telephone line battery boost circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES455345A1 true ES455345A1 (es) | 1978-01-01 |
Family
ID=24615324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES455345A Expired ES455345A1 (es) | 1976-01-26 | 1977-01-26 | Perfeccionamientos en prolongadores de alcanos de intesifi- cacion de baterias. |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4024351A (es) |
| JP (1) | JPS5291604A (es) |
| AU (1) | AU515242B2 (es) |
| BE (1) | BE850715A (es) |
| CA (1) | CA1069632A (es) |
| CH (1) | CH612807A5 (es) |
| DE (1) | DE2702718C3 (es) |
| ES (1) | ES455345A1 (es) |
| FR (1) | FR2339303A1 (es) |
| GB (1) | GB1561463A (es) |
| IT (1) | IT1082519B (es) |
| NL (1) | NL7700732A (es) |
| SE (1) | SE7700304L (es) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1069232A (en) * | 1976-04-28 | 1980-01-01 | Frederick J. Glenn | Loop extender |
| US4140881A (en) * | 1977-03-08 | 1979-02-20 | Clenney Richard W | Telephone loop extending apparatus |
| US4205204A (en) * | 1977-03-08 | 1980-05-27 | Clenney Richard W | Telephone loop extending apparatus |
| JPS55105485A (en) * | 1979-02-07 | 1980-08-13 | Nec Corp | Trunk circuit of automatic telephone exchange |
| JPS55141937A (en) * | 1979-04-23 | 1980-11-06 | Nippon Electric Co | Power supply circuit |
| DE3542407A1 (de) * | 1985-11-30 | 1987-06-04 | Kabelmetal Electro Gmbh | Schaltungsanordnung zur uebertragung nachrichtentechnischer signale |
| BR112020003127A2 (pt) * | 2017-12-22 | 2020-08-04 | Firmenich S.A. | intensificadores de acidez que compreendem um ácido ciclo-hexanocarboxílico |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3781480A (en) * | 1970-11-10 | 1973-12-25 | Wescom | Loop extender |
| US3763320A (en) * | 1971-10-20 | 1973-10-02 | Lorain Prod Corp | Voltage booster circuit having test-through characteristics |
| US3898389A (en) * | 1972-10-18 | 1975-08-05 | Communic Mfg | Voltage and/or current-sensitive loop extender |
| US3852536A (en) * | 1973-05-16 | 1974-12-03 | Lorain Prod Corp | Test-through voltage booster circuit for telephone systems |
| US3906162A (en) * | 1974-07-30 | 1975-09-16 | Communic Mfg | Loop extender with bypass capacitor discharge |
-
1976
- 1976-01-26 US US05/652,051 patent/US4024351A/en not_active Expired - Lifetime
-
1977
- 1977-01-11 CA CA269,500A patent/CA1069632A/en not_active Expired
- 1977-01-13 SE SE7700304A patent/SE7700304L/ unknown
- 1977-01-20 AU AU21478/77A patent/AU515242B2/en not_active Expired
- 1977-01-21 GB GB2617/77A patent/GB1561463A/en not_active Expired
- 1977-01-21 FR FR7701821A patent/FR2339303A1/fr active Granted
- 1977-01-24 DE DE2702718A patent/DE2702718C3/de not_active Expired
- 1977-01-25 NL NL7700732A patent/NL7700732A/xx not_active Application Discontinuation
- 1977-01-25 BE BE174348A patent/BE850715A/xx not_active IP Right Cessation
- 1977-01-25 IT IT67158/77A patent/IT1082519B/it active
- 1977-01-26 CH CH93677A patent/CH612807A5/xx not_active IP Right Cessation
- 1977-01-26 JP JP688577A patent/JPS5291604A/ja active Granted
- 1977-01-26 ES ES455345A patent/ES455345A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE850715A (fr) | 1977-05-16 |
| JPS5647744B2 (es) | 1981-11-11 |
| IT1082519B (it) | 1985-05-21 |
| FR2339303A1 (fr) | 1977-08-19 |
| US4024351A (en) | 1977-05-17 |
| CA1069632A (en) | 1980-01-08 |
| GB1561463A (en) | 1980-02-20 |
| DE2702718A1 (de) | 1977-08-04 |
| NL7700732A (nl) | 1977-07-28 |
| AU2147877A (en) | 1978-07-27 |
| FR2339303B1 (es) | 1981-06-19 |
| CH612807A5 (es) | 1979-08-15 |
| DE2702718B2 (de) | 1979-09-20 |
| SE7700304L (sv) | 1977-07-27 |
| DE2702718C3 (de) | 1980-06-12 |
| AU515242B2 (en) | 1981-03-26 |
| JPS5291604A (en) | 1977-08-02 |
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