JPS5439509A - Dc current supplying circuit - Google Patents
Dc current supplying circuitInfo
- Publication number
- JPS5439509A JPS5439509A JP10581777A JP10581777A JPS5439509A JP S5439509 A JPS5439509 A JP S5439509A JP 10581777 A JP10581777 A JP 10581777A JP 10581777 A JP10581777 A JP 10581777A JP S5439509 A JPS5439509 A JP S5439509A
- Authority
- JP
- Japan
- Prior art keywords
- supplying circuit
- current supplying
- current
- output
- establish
- 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
- H04M19/005—Feeding arrangements without the use of line transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
PURPOSE:To establish AC high impedance performance at low current supply, by obtaining the output having desired characteristics through the constant voltage control of current output transistors, in the current supplying circuit used for the terminal unit of a telephone exchanger.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10581777A JPS5439509A (en) | 1977-09-05 | 1977-09-05 | Dc current supplying circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10581777A JPS5439509A (en) | 1977-09-05 | 1977-09-05 | Dc current supplying circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5439509A true JPS5439509A (en) | 1979-03-27 |
Family
ID=14417626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10581777A Pending JPS5439509A (en) | 1977-09-05 | 1977-09-05 | Dc current supplying circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5439509A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4642548A (en) * | 1984-07-25 | 1987-02-10 | Hitachi, Ltd. | Control apparatus for charging generator |
JPS62257260A (en) * | 1986-04-30 | 1987-11-09 | Sharp Corp | Power transmission equipment |
-
1977
- 1977-09-05 JP JP10581777A patent/JPS5439509A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4642548A (en) * | 1984-07-25 | 1987-02-10 | Hitachi, Ltd. | Control apparatus for charging generator |
JPS62257260A (en) * | 1986-04-30 | 1987-11-09 | Sharp Corp | Power transmission equipment |
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