ES545071A0 - Un circuito de linea para la alimentacion de un bucle de corriente a una linea de abonado telefonico - Google Patents
Un circuito de linea para la alimentacion de un bucle de corriente a una linea de abonado telefonicoInfo
- Publication number
- ES545071A0 ES545071A0 ES545071A ES545071A ES545071A0 ES 545071 A0 ES545071 A0 ES 545071A0 ES 545071 A ES545071 A ES 545071A ES 545071 A ES545071 A ES 545071A ES 545071 A0 ES545071 A0 ES 545071A0
- Authority
- ES
- Spain
- Prior art keywords
- line
- amplifier
- coupled
- gain
- input terminal
- 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.)
- Granted
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
- H04M19/005—Feeding arrangements without the use of line transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/629,659 US4581487A (en) | 1984-07-11 | 1984-07-11 | Universal DC feed for telephone line and trunk circuits |
Publications (2)
Publication Number | Publication Date |
---|---|
ES545071A0 true ES545071A0 (es) | 1986-10-01 |
ES8700820A1 ES8700820A1 (es) | 1986-10-01 |
Family
ID=24523931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES545071A Expired ES8700820A1 (es) | 1984-07-11 | 1985-07-11 | Un circuito de linea para la alimentacion de un bucle de corriente a una linea de abonado telefonico |
Country Status (5)
Country | Link |
---|---|
US (1) | US4581487A (es) |
EP (1) | EP0168318B1 (es) |
AT (1) | ATE50103T1 (es) |
DE (1) | DE3575832D1 (es) |
ES (1) | ES8700820A1 (es) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4706281A (en) * | 1984-04-30 | 1987-11-10 | American Telephone And Telegraph Company | Dynamic impedance element for a battery feed circuit |
US4685130A (en) * | 1985-08-29 | 1987-08-04 | Gte Communication Systems Corporation | Subscriber line circuit having an improved loop current supply circuit |
CA1257027A (en) * | 1987-03-10 | 1989-07-04 | Rolf Meier | Compensation circuit for use with an integrating amplifier |
CA1268873A (en) * | 1987-09-22 | 1990-05-08 | Mihail Stefan Augustin Traian Moisin | Line interface circuit |
JP2881781B2 (ja) * | 1988-11-08 | 1999-04-12 | ローム 株式会社 | Ic化されたダイヤラ回路 |
US5768367A (en) * | 1996-10-17 | 1998-06-16 | Northern Telecom Limited | Method and apparatus for removing FSK in-band signaling |
US6362467B1 (en) * | 1999-10-21 | 2002-03-26 | Infineon Technologies North America Corp. | Fast-switching comparator with hysteresis |
US7821758B1 (en) * | 2006-11-16 | 2010-10-26 | Adtran, Inc. | Systems and methods for reducing intermodulation distortion |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL289634A (es) * | 1962-03-01 | |||
DE1487984A1 (de) * | 1966-07-14 | 1969-03-13 | Standard Elek K Lorenz Ag | Gleichstromsignalverfahren in Nachrichtenvermittlungsanlagen |
US3821486A (en) * | 1973-06-22 | 1974-06-28 | Bell Telephone Labor Inc | Bridge type supervisory detector with reduced breakdown voltage requirements |
NL7903662A (nl) * | 1979-05-10 | 1980-11-12 | Philips Nv | Lijncircuit. |
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 |
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 |
US4419542A (en) * | 1982-05-17 | 1983-12-06 | Bell Telephone Laboratories, Incorporated | Battery feed circuit |
US4514595A (en) * | 1982-06-10 | 1985-04-30 | Northern Telecom Limited | Active impedance line feed circuit |
SE433284B (sv) * | 1982-09-17 | 1984-05-14 | Ericsson Telefon Ab L M | Anordning for strommatning av en abonnentapparat |
-
1984
- 1984-07-11 US US06/629,659 patent/US4581487A/en not_active Expired - Fee Related
-
1985
- 1985-07-04 AT AT85401355T patent/ATE50103T1/de not_active IP Right Cessation
- 1985-07-04 DE DE8585401355T patent/DE3575832D1/de not_active Expired - Lifetime
- 1985-07-04 EP EP85401355A patent/EP0168318B1/en not_active Expired - Lifetime
- 1985-07-11 ES ES545071A patent/ES8700820A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0168318A2 (en) | 1986-01-15 |
ATE50103T1 (de) | 1990-02-15 |
DE3575832D1 (de) | 1990-03-08 |
EP0168318B1 (en) | 1990-01-31 |
EP0168318A3 (en) | 1986-12-30 |
ES8700820A1 (es) | 1986-10-01 |
US4581487A (en) | 1986-04-08 |
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