ES8100587A1 - Un circuito de alimentacion para linea de abonado limitado en corriente - Google Patents
Un circuito de alimentacion para linea de abonado limitado en corrienteInfo
- Publication number
- ES8100587A1 ES8100587A1 ES488340A ES488340A ES8100587A1 ES 8100587 A1 ES8100587 A1 ES 8100587A1 ES 488340 A ES488340 A ES 488340A ES 488340 A ES488340 A ES 488340A ES 8100587 A1 ES8100587 A1 ES 8100587A1
- Authority
- ES
- Spain
- Prior art keywords
- current
- feed current
- subscriber
- feed
- threshold value
- 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
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/76—Compensating for differences in line impedance
-
- 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
- H04M19/008—Using DC/DC converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
UN CIRCUITO DE ALIMENTACION PARA LINEAS TELEFONICAS DE ABONADO LIMITADO EN CORRIENTE. CONSISTE EN UN CIRCUITO DE CONTROL SITUADO EN LA CENTRAL QUE SUMINISTRA UNA CORRIENTE OPTIMIZADA PARA EL FUNCIONAMIENTO APROPIADO DE UNO O VARIOS TELEFONOS REMOTOS, INDEPENDIENTEMENTE DE LA LONGITUD DEL BUCLE DE ABONADO, ESTO DISMINUYE LA POTENCIA EN MAS DE LA REQUERIDA PARA EL FUNCIONAMIENTO, PROPORCIONANDO UNA CARACTERISTICA ATENUACION-GANANCIA QUE ASEGURAN UNOS NIVELES DE SEÑAL DE CONVERSACION OPTIMAS. L
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/009,992 US4254305A (en) | 1979-02-07 | 1979-02-07 | Current limited subscriber line feed circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8100587A1 true ES8100587A1 (es) | 1980-11-01 |
ES488340A0 ES488340A0 (es) | 1980-11-01 |
Family
ID=21740893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES488340A Granted ES488340A0 (es) | 1979-02-07 | 1980-02-07 | Un circuito de alimentacion para linea de abonado limitado en corriente |
Country Status (35)
Country | Link |
---|---|
US (1) | US4254305A (es) |
JP (1) | JPS55120257A (es) |
KR (1) | KR830000247B1 (es) |
AR (1) | AR221925A1 (es) |
AT (1) | AT384329B (es) |
AU (1) | AU538261B2 (es) |
BE (1) | BE881581A (es) |
BR (1) | BR8000697A (es) |
CA (1) | CA1131818A (es) |
CH (1) | CH649881A5 (es) |
DD (1) | DD149145A5 (es) |
DE (1) | DE3001362C3 (es) |
DK (1) | DK51080A (es) |
EG (1) | EG14128A (es) |
ES (1) | ES488340A0 (es) |
FI (1) | FI73106C (es) |
FR (1) | FR2448818B1 (es) |
GB (1) | GB2042306B (es) |
GR (1) | GR74013B (es) |
HK (1) | HK41285A (es) |
HU (1) | HU182064B (es) |
IN (1) | IN152284B (es) |
IT (1) | IT1193916B (es) |
MX (1) | MX148000A (es) |
NL (1) | NL8000603A (es) |
NO (1) | NO149125C (es) |
NZ (1) | NZ192787A (es) |
PL (1) | PL127642B1 (es) |
PT (1) | PT70776A (es) |
RO (1) | RO83385B (es) |
SE (1) | SE446146B (es) |
SU (1) | SU1292672A3 (es) |
TR (1) | TR22189A (es) |
YU (1) | YU41404B (es) |
ZA (1) | ZA80425B (es) |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2064268B (en) * | 1979-09-17 | 1983-10-26 | Philips Nv | Electronic signalling device for connection to a signal transmission line |
DE2938981A1 (de) * | 1979-09-26 | 1981-04-30 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur registrierung des schaltzustandes in einem insbesondere durch teilnehmeranschlussleitungen von fernsprechvermittlungsanlagen gebildeten schaltkreis |
US4315106A (en) * | 1979-11-28 | 1982-02-09 | International Telephone And Telegraph Corporation | Apparatus for regulating current supplied to a telephone line signal of the type employed in digital telephone systems |
US4354062A (en) * | 1980-01-31 | 1982-10-12 | Bell Telephone Laboratories, Incorporated | Communication system signaling circuit |
GB2071461B (en) * | 1980-02-14 | 1984-01-25 | Standard Telephones Cables Ltd | Telephone line feed |
US4358643A (en) * | 1980-04-21 | 1982-11-09 | Siemens Corporation | Two to four wire hybrid circuit |
US4387273A (en) * | 1980-08-25 | 1983-06-07 | International Telephone And Telegraph Corporation | Subscriber line interface circuit with impedance synthesizer |
US4317963A (en) * | 1980-09-22 | 1982-03-02 | International Telephone And Telegraph Corporation | Subscriber line interface circuit utilizing impedance synthesizer and shared voltage source for loop current regulation control |
US4343971A (en) * | 1981-02-17 | 1982-08-10 | Reliance Electric Company | Subscriber drop circuit for controlling drop current with load and maximizing power usage |
CA1157175A (en) * | 1981-02-20 | 1983-11-15 | Mitel Corporation | Power saving line circuit |
JPS5854773A (ja) * | 1981-09-28 | 1983-03-31 | Nec Corp | 加入者回路 |
US4495494A (en) * | 1981-10-05 | 1985-01-22 | Bell Telephone Laboratories, Incorporated | Detector circuit for communication lines |
GB8302673D0 (en) * | 1983-02-01 | 1983-03-02 | Motorola Inc | Borsht/slic auto balancing technique |
US4498844A (en) * | 1983-08-08 | 1985-02-12 | The Nash Engineering Company | Liquid ring pump with conical or cylindrical port member |
DE3436022A1 (de) * | 1984-10-01 | 1986-04-03 | Sihi Gmbh & Co Kg, 2210 Itzehoe | Fluessigkeitsring-verdichter |
US4598173A (en) * | 1984-10-15 | 1986-07-01 | Itt Corporation | Interface circuit for a subscriber line circuit |
US4602130A (en) * | 1984-10-15 | 1986-07-22 | Itt Corporation | Dual voltage source feed circuit configuration for a telephone line circuit |
CA1240088A (en) * | 1985-11-20 | 1988-08-02 | Mitel Corporation | Solid state trunk circuit |
US4755107A (en) * | 1986-05-14 | 1988-07-05 | Siemens Aktiengesellschaft | Liquid-ring pump having additional openings in control disc for warm and cold liquid |
ATE71783T1 (de) * | 1987-04-14 | 1992-02-15 | Siemens Ag | Verfahren und schaltungsanordnung zur einstellung der teilnehmerleitungs-nachbildungsimpedanzen von programmierbaren gabelschaltung. |
US4809324A (en) * | 1987-07-27 | 1989-02-28 | Siemens Transmission Systems, Inc. | Subscriber line interface circuit (SLIC) isolation from lighting-induced ground overshoots |
US5054060A (en) * | 1988-06-10 | 1991-10-01 | Adc Telecommunications, Inc. | Circuit for regulating current in a PBX loop |
US4899382A (en) * | 1988-06-15 | 1990-02-06 | Siemens Transmission Systems, Inc. | Telephone circuit using DC blocked transformer and negative impedance technique |
US4965692A (en) * | 1989-07-31 | 1990-10-23 | Siemens Transmission Systems, Inc. | Overload detector and protection circuit |
SE465799B (sv) * | 1990-03-15 | 1991-10-28 | Ericsson Telefon Ab L M | Anordning foer reducerad effektmatning till en abonnentlinje |
US5163090A (en) * | 1990-10-18 | 1992-11-10 | Ag Communication Systems Corporation | Over-current verifier circuit for an enhanced subscriber line interface |
US5661794A (en) * | 1992-04-16 | 1997-08-26 | Northern Telecom Limited | Telephone line interface circuit with voltage control |
US5511118A (en) * | 1991-01-31 | 1996-04-23 | Northern Telecom Limited | Method of providing d.c. feed to a telephone line |
DE4139608A1 (de) * | 1991-11-30 | 1993-06-03 | Siemens Nixdorf Inf Syst | Verfahren zur versorgungsspannungseinstellung der speiseeinrichtung von teilnehmeranschlussschaltungen |
GB2304254B (en) * | 1995-08-04 | 1999-12-08 | Nokia Telecommunications Oy | Power supply for telecommunications devices |
JP2845181B2 (ja) * | 1995-09-22 | 1999-01-13 | 日本電気株式会社 | 加入者回路 |
US5721774A (en) * | 1995-12-15 | 1998-02-24 | Lucent Technologies Inc. | Longitudinally balanced, dual voltage line-feed circuit |
US5854839A (en) * | 1996-05-10 | 1998-12-29 | Lucent Technologies Inc. | Dual voltage, self-monitoring line circuit |
WO1999053627A1 (en) | 1998-04-10 | 1999-10-21 | Chrimar Systems, Inc. Doing Business As Cms Technologies | System for communicating with electronic equipment on a network |
US6480510B1 (en) | 1998-07-28 | 2002-11-12 | Serconet Ltd. | Local area network of serial intelligent cells |
US6115469A (en) * | 1998-08-25 | 2000-09-05 | Unitrode Corporation | Telephone line ring signal and DC power generator |
IL143876A0 (en) * | 1998-12-22 | 2002-04-21 | Ericsson Ahead Comm Systems Gm | Circuit and method for remote feeding |
US6956826B1 (en) | 1999-07-07 | 2005-10-18 | Serconet Ltd. | Local area network for distributing data communication, sensing and control signals |
US6842459B1 (en) * | 2000-04-19 | 2005-01-11 | Serconet Ltd. | Network combining wired and non-wired segments |
US6982860B2 (en) * | 2002-11-13 | 2006-01-03 | Adtran, Inc. | Technique for fault isolation and transient load isolation for multiple electrical loads connected to a common electrical power source |
US20060072740A1 (en) * | 2004-09-30 | 2006-04-06 | Tesu Ion C | Selective analog signal sensing from a plurality of integrated circuits using a common node |
USD608647S1 (en) | 2008-06-05 | 2010-01-26 | Colgate-Palmolive Co. | Container |
USD644313S1 (en) | 2009-03-27 | 2011-08-30 | S.C. Johnson & Son, Inc. | Aerosol dispenser |
USD616308S1 (en) | 2009-06-09 | 2010-05-25 | Colgate-Palmolive Company | Container |
USD615869S1 (en) | 2009-06-09 | 2010-05-18 | Colgate-Palmolive Company | Container |
USD630517S1 (en) | 2009-06-09 | 2011-01-11 | Colgate-Palmolive Company | Container |
US8474663B2 (en) | 2010-07-30 | 2013-07-02 | S.C. Johnson & Son, Inc. | Adapter for a dispenser |
US8459508B2 (en) | 2010-07-30 | 2013-06-11 | S.C. Johnson & Son, Inc. | Shroud for a dispenser |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1069213B (es) * | 1955-09-17 | 1959-11-19 | ||
DE1299735B (de) * | 1965-08-04 | 1969-07-24 | Siemens Ag | Schaltungsanordnung fuer Fernsprechanlagen, insbesondere Nebenstellenanlagen mit Sprechstellen, die einen selbsttaetigen Daempfungsausgleich aufweisen |
US3781481A (en) * | 1971-09-30 | 1973-12-25 | Stromberg Carlson Corp | Amplifier select and control circuit |
US3914560A (en) * | 1971-10-13 | 1975-10-21 | Superior Continental Corp | Self-adjusting repeater for voice frequency telephone transmission systems |
DE2209639A1 (de) * | 1972-02-29 | 1973-09-06 | Siemens Ag | Schaltungsanordnung fuer eine automatische speisestromregelung bei unterschiedlich langen fernsprechleitungen |
DE2209593A1 (de) * | 1972-02-29 | 1973-09-06 | Siemens Ag | Schaltungsanordnung fuer eine automatische speisestromregelung bei unterschiedlich langen fernsprechleitungen |
CH586984A5 (es) * | 1974-12-23 | 1977-04-15 | Ibm | |
US3903378A (en) * | 1974-03-27 | 1975-09-02 | Gte Automatic Electric Lab Inc | Arrangement for controlling the gain of two-way amplifiers in accordance with loop lengths |
CH586983A5 (es) * | 1974-12-23 | 1977-04-15 | Ibm | |
GB1584778A (en) * | 1976-09-17 | 1981-02-18 | Gen Electric | Telecommunication exchanges |
US4056691A (en) * | 1977-01-05 | 1977-11-01 | Bell Telephone Laboratories, Incorporated | Telephone subscriber line circuit |
GB1583634A (en) * | 1977-03-02 | 1981-01-28 | Int Standard Electric Corp | Subscriber line/trunk circuit |
-
1979
- 1979-02-07 US US06/009,992 patent/US4254305A/en not_active Expired - Lifetime
-
1980
- 1980-01-15 GR GR60966A patent/GR74013B/el unknown
- 1980-01-16 DE DE3001362A patent/DE3001362C3/de not_active Expired
- 1980-01-22 GB GB8002018A patent/GB2042306B/en not_active Expired
- 1980-01-24 ZA ZA00800425A patent/ZA80425B/xx unknown
- 1980-01-25 AT AT0040880A patent/AT384329B/de not_active IP Right Cessation
- 1980-01-28 HU HU80179A patent/HU182064B/hu unknown
- 1980-01-30 AU AU55051/80A patent/AU538261B2/en not_active Ceased
- 1980-01-31 NL NL8000603A patent/NL8000603A/nl not_active Application Discontinuation
- 1980-02-01 NZ NZ192787A patent/NZ192787A/xx unknown
- 1980-02-01 PL PL1980221751A patent/PL127642B1/pl unknown
- 1980-02-04 NO NO800274A patent/NO149125C/no unknown
- 1980-02-04 PT PT70776A patent/PT70776A/pt unknown
- 1980-02-04 SE SE8000852A patent/SE446146B/sv not_active IP Right Cessation
- 1980-02-05 BR BR8000697A patent/BR8000697A/pt unknown
- 1980-02-05 DD DD80218901A patent/DD149145A5/de unknown
- 1980-02-06 SU SU802882443A patent/SU1292672A3/ru active
- 1980-02-06 MX MX181097A patent/MX148000A/es unknown
- 1980-02-06 EG EG67/80A patent/EG14128A/xx active
- 1980-02-06 AR AR279895A patent/AR221925A1/es active
- 1980-02-06 DK DK51080A patent/DK51080A/da not_active Application Discontinuation
- 1980-02-07 IT IT19764/80A patent/IT1193916B/it active
- 1980-02-07 CA CA345,194A patent/CA1131818A/en not_active Expired
- 1980-02-07 ES ES488340A patent/ES488340A0/es active Granted
- 1980-02-07 KR KR1019800000477A patent/KR830000247B1/ko active
- 1980-02-07 FI FI800383A patent/FI73106C/fi not_active IP Right Cessation
- 1980-02-07 RO RO100121A patent/RO83385B/ro unknown
- 1980-02-07 BE BE2/58389A patent/BE881581A/nl not_active IP Right Cessation
- 1980-02-07 TR TR22189A patent/TR22189A/xx unknown
- 1980-02-07 JP JP1307880A patent/JPS55120257A/ja active Granted
- 1980-02-07 FR FR8002655A patent/FR2448818B1/fr not_active Expired
- 1980-02-07 CH CH970/80A patent/CH649881A5/de not_active IP Right Cessation
- 1980-02-07 YU YU324/80A patent/YU41404B/xx unknown
- 1980-05-12 IN IN559/CAL/80A patent/IN152284B/en unknown
-
1985
- 1985-05-30 HK HK412/85A patent/HK41285A/xx unknown
Also Published As
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