BE876181A - Circuit boucle de controle de puissance de poste d'abonne telephonique - Google Patents
Circuit boucle de controle de puissance de poste d'abonne telephoniqueInfo
- Publication number
- BE876181A BE876181A BE2/57786A BE2057786A BE876181A BE 876181 A BE876181 A BE 876181A BE 2/57786 A BE2/57786 A BE 2/57786A BE 2057786 A BE2057786 A BE 2057786A BE 876181 A BE876181 A BE 876181A
- Authority
- BE
- Belgium
- Prior art keywords
- power control
- control loop
- subscriber station
- loop circuit
- station power
- Prior art date
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
- H04M19/008—Using DC/DC converters
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/915,634 US4197432A (en) | 1978-06-15 | 1978-06-15 | Telephone subscriber's loop power control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
BE876181A true BE876181A (fr) | 1979-09-03 |
Family
ID=25436038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE2/57786A BE876181A (fr) | 1978-06-15 | 1979-05-11 | Circuit boucle de controle de puissance de poste d'abonne telephonique |
Country Status (4)
Country | Link |
---|---|
US (1) | US4197432A (fr) |
BE (1) | BE876181A (fr) |
CA (1) | CA1116330A (fr) |
IT (1) | IT1121333B (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4393491A (en) * | 1980-11-05 | 1983-07-12 | Anaconda-Ericsson | Automatic self-test system for a digital multiplexed telecommunication system |
US4361731A (en) * | 1981-02-13 | 1982-11-30 | Bell Telephone Laboratories, Incorporated | Coin telephone control circuit |
US4410982A (en) * | 1981-05-07 | 1983-10-18 | Gte Automatic Electric Labs. Inc. | Arrangement for extending digital signaling to telephone subscribers' substations |
FR2519218A1 (fr) * | 1981-12-24 | 1983-07-01 | Telecommunications Sa | Procede et dispositif d'alimentation d'une regie d'abonne |
NL8202812A (nl) * | 1982-07-12 | 1984-02-01 | Philips Nv | Voedingsinrichting voor het toevoeren van gelijkstroom aan abonneecircuits. |
ES2100803B1 (es) * | 1994-05-20 | 1998-04-16 | Telefonica Nacional Espana Co | Circuito integrado de actuacion y exploracion doble. |
KR0168529B1 (ko) * | 1996-02-12 | 1999-02-01 | 김광호 | 간이 교환장치의 정전시 메모리 보존 회로 |
JP3145942B2 (ja) * | 1997-02-18 | 2001-03-12 | 日本電気株式会社 | 電源システム |
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 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3848094A (en) * | 1972-12-29 | 1974-11-12 | Stromberg Carlson Corp | Telephone battery feed circuit |
GB1563802A (en) * | 1975-11-10 | 1980-04-02 | Post Office | Electronic current feed circuit |
US4087647A (en) * | 1977-05-25 | 1978-05-02 | Bell Telephone Laboratories, Incorporated | Circuit for supplying direct current to telephone station sets |
-
1978
- 1978-06-15 US US05/915,634 patent/US4197432A/en not_active Expired - Lifetime
-
1979
- 1979-05-11 BE BE2/57786A patent/BE876181A/fr unknown
- 1979-06-08 IT IT23377/79A patent/IT1121333B/it active
- 1979-06-08 CA CA000329795A patent/CA1116330A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT1121333B (it) | 1986-04-02 |
US4197432A (en) | 1980-04-08 |
CA1116330A (fr) | 1982-01-12 |
IT7923377A0 (it) | 1979-06-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2019166B (en) | Packet-switched communication network | |
NO790851L (no) | Fordelt kommunikasjonsnettverk | |
JPS5561153A (en) | Power distributing network power line carrier communicating device | |
YU41854B (en) | Distributed control digital commutation network | |
FR2353193A1 (fr) | Reseau de commutation telephonique | |
AT365297B (de) | Mobiler foerderstromvergleichmaessiger | |
EP0176342A3 (en) | Power control network using reliable communications protocol | |
GB2014798A (en) | Telephone network/subscriber interface device | |
FR2406358B1 (fr) | Circuit d'interface pour poste telephonique | |
IL55687A0 (en) | Communication system using intelligent network processor | |
JPS54136166A (en) | Semiconductor switch and telephone subscriber*s line circuit | |
LU80639A1 (fr) | Poste telephonique a haut-parleur | |
DE2962011D1 (en) | Underwater communications device | |
GB2046556B (en) | Telecommunications system incorporating portable communications units | |
BE876181A (fr) | Circuit boucle de controle de puissance de poste d'abonne telephonique | |
BR8307526A (pt) | Conjunto para alimentar corrente a um aparelho telefonico de assinante | |
JPS553100A (en) | Constant current power circuit | |
BE853883A (fr) | Poste telephonique a prepaiement equipe d'un microcalculateur | |
IT1162641B (it) | Apparecchio d'annaffiamento mobile | |
JPS554199A (en) | Communication device | |
AU511552B2 (en) | Subscribers loop network | |
GB2018093B (en) | Telephone subscriber's line circuit | |
FR2407633B1 (fr) | Reseau de commutation telephonique a thyristors | |
GB2035753B (en) | Monitoring telephone line current | |
ZA796152B (en) | Telecommunications system incorporating portable communications units |