JPS55147871A - Current limiting circuit - Google Patents
Current limiting circuitInfo
- Publication number
- JPS55147871A JPS55147871A JP5554879A JP5554879A JPS55147871A JP S55147871 A JPS55147871 A JP S55147871A JP 5554879 A JP5554879 A JP 5554879A JP 5554879 A JP5554879 A JP 5554879A JP S55147871 A JPS55147871 A JP S55147871A
- Authority
- JP
- Japan
- Prior art keywords
- photo transistor
- service current
- light
- resistance
- 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.)
- Pending
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 |
---|---|---|---|
JP5554879A JPS55147871A (en) | 1979-05-07 | 1979-05-07 | Current limiting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5554879A JPS55147871A (en) | 1979-05-07 | 1979-05-07 | Current limiting circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55147871A true JPS55147871A (en) | 1980-11-18 |
Family
ID=13001752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5554879A Pending JPS55147871A (en) | 1979-05-07 | 1979-05-07 | Current limiting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55147871A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59115666A (ja) * | 1982-12-22 | 1984-07-04 | Matsushita Electric Ind Co Ltd | 電話回線への直流供給装置 |
-
1979
- 1979-05-07 JP JP5554879A patent/JPS55147871A/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59115666A (ja) * | 1982-12-22 | 1984-07-04 | Matsushita Electric Ind Co Ltd | 電話回線への直流供給装置 |
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