JPS53106506A - Power supply circuit for subscriber's telephone set - Google Patents
Power supply circuit for subscriber's telephone setInfo
- Publication number
- JPS53106506A JPS53106506A JP2125077A JP2125077A JPS53106506A JP S53106506 A JPS53106506 A JP S53106506A JP 2125077 A JP2125077 A JP 2125077A JP 2125077 A JP2125077 A JP 2125077A JP S53106506 A JPS53106506 A JP S53106506A
- Authority
- JP
- Japan
- Prior art keywords
- subscriber
- power supply
- supply circuit
- telephone set
- transformer
- 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
- H04M19/003—Arrangements for compensation of the DC flux in line transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
PURPOSE:To make the set small in size and economize the set, by reducing the current in the transformer windings and eliminating the adverse effect due to DC excitation of core, through the provision of the constant current sources having different capacity at the telephone side of transformer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52021250A JPS5949749B2 (en) | 1977-02-28 | 1977-02-28 | Power supply circuit for subscriber's telephone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52021250A JPS5949749B2 (en) | 1977-02-28 | 1977-02-28 | Power supply circuit for subscriber's telephone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53106506A true JPS53106506A (en) | 1978-09-16 |
JPS5949749B2 JPS5949749B2 (en) | 1984-12-04 |
Family
ID=12049811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52021250A Expired JPS5949749B2 (en) | 1977-02-28 | 1977-02-28 | Power supply circuit for subscriber's telephone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5949749B2 (en) |
-
1977
- 1977-02-28 JP JP52021250A patent/JPS5949749B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5949749B2 (en) | 1984-12-04 |
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