JPS55154868A - Current supply circuit for telephone switchboard - Google Patents
Current supply circuit for telephone switchboardInfo
- Publication number
- JPS55154868A JPS55154868A JP6264079A JP6264079A JPS55154868A JP S55154868 A JPS55154868 A JP S55154868A JP 6264079 A JP6264079 A JP 6264079A JP 6264079 A JP6264079 A JP 6264079A JP S55154868 A JPS55154868 A JP S55154868A
- Authority
- JP
- Japan
- Prior art keywords
- current
- load
- current supply
- voltage detecting
- circuit
- 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
- H04M19/06—Current supply arrangements for telephone systems in which current supply sources at subordinate switching centres are charged from the main exchange
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54062640A JPS5930358B2 (ja) | 1979-05-23 | 1979-05-23 | 電話交換機用電流供給回路 |
CA336,004A CA1130940A (en) | 1978-09-22 | 1979-09-20 | Current supply circuit for telephone exchange |
DE2938346A DE2938346C2 (de) | 1978-09-22 | 1979-09-21 | Stromversorgungsschaltung |
US06/078,469 US4315206A (en) | 1978-09-22 | 1979-09-24 | Current supply circuit for telephone exchange |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54062640A JPS5930358B2 (ja) | 1979-05-23 | 1979-05-23 | 電話交換機用電流供給回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55154868A true JPS55154868A (en) | 1980-12-02 |
JPS5930358B2 JPS5930358B2 (ja) | 1984-07-26 |
Family
ID=13206123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54062640A Expired JPS5930358B2 (ja) | 1978-09-22 | 1979-05-23 | 電話交換機用電流供給回路 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5930358B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61293115A (ja) * | 1985-06-18 | 1986-12-23 | ノ−ザン・テレコム・リミテツド | 電話加入者用ラインインタ−フエ−ス回路の保護装置 |
-
1979
- 1979-05-23 JP JP54062640A patent/JPS5930358B2/ja not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61293115A (ja) * | 1985-06-18 | 1986-12-23 | ノ−ザン・テレコム・リミテツド | 電話加入者用ラインインタ−フエ−ス回路の保護装置 |
Also Published As
Publication number | Publication date |
---|---|
JPS5930358B2 (ja) | 1984-07-26 |
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