JPS5737967A - Talking current supply protecting circuit - Google Patents
Talking current supply protecting circuitInfo
- Publication number
- JPS5737967A JPS5737967A JP11243680A JP11243680A JPS5737967A JP S5737967 A JPS5737967 A JP S5737967A JP 11243680 A JP11243680 A JP 11243680A JP 11243680 A JP11243680 A JP 11243680A JP S5737967 A JPS5737967 A JP S5737967A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- talking
- talking current
- level
- current
- 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
-
- 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)
- Devices For Supply Of Signal Current (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11243680A JPS5737967A (en) | 1980-08-15 | 1980-08-15 | Talking current supply protecting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11243680A JPS5737967A (en) | 1980-08-15 | 1980-08-15 | Talking current supply protecting circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5737967A true JPS5737967A (en) | 1982-03-02 |
JPS6230545B2 JPS6230545B2 (ja) | 1987-07-02 |
Family
ID=14586579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11243680A Granted JPS5737967A (en) | 1980-08-15 | 1980-08-15 | Talking current supply protecting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5737967A (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61128718A (ja) * | 1984-11-26 | 1986-06-16 | 富士通株式会社 | 電子回路保護方式 |
EP0425675A1 (en) * | 1989-01-19 | 1991-05-08 | Fujitsu Limited | Ground fault detecting circuit for subscriber lines |
WO1991014333A1 (en) * | 1990-03-15 | 1991-09-19 | Telefonaktiebolaget Lm Ericsson | An arrangement for reduced power supply |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0413961Y2 (ja) * | 1986-07-30 | 1992-03-30 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54107609A (en) * | 1978-02-13 | 1979-08-23 | Hitachi Ltd | Overcurrent automatic interruption system for telephone exchanger subscribing circuit |
-
1980
- 1980-08-15 JP JP11243680A patent/JPS5737967A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54107609A (en) * | 1978-02-13 | 1979-08-23 | Hitachi Ltd | Overcurrent automatic interruption system for telephone exchanger subscribing circuit |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61128718A (ja) * | 1984-11-26 | 1986-06-16 | 富士通株式会社 | 電子回路保護方式 |
EP0425675A1 (en) * | 1989-01-19 | 1991-05-08 | Fujitsu Limited | Ground fault detecting circuit for subscriber lines |
WO1991014333A1 (en) * | 1990-03-15 | 1991-09-19 | Telefonaktiebolaget Lm Ericsson | An arrangement for reduced power supply |
Also Published As
Publication number | Publication date |
---|---|
JPS6230545B2 (ja) | 1987-07-02 |
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