JPS54119817A - Generation circuit for low frequency voltage - Google Patents
Generation circuit for low frequency voltageInfo
- Publication number
- JPS54119817A JPS54119817A JP2732178A JP2732178A JPS54119817A JP S54119817 A JPS54119817 A JP S54119817A JP 2732178 A JP2732178 A JP 2732178A JP 2732178 A JP2732178 A JP 2732178A JP S54119817 A JPS54119817 A JP S54119817A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- low frequency
- output
- high frequency
- voltage
- 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
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
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 |
---|---|---|---|
JP2732178A JPS54119817A (en) | 1978-03-09 | 1978-03-09 | Generation circuit for low frequency voltage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2732178A JPS54119817A (en) | 1978-03-09 | 1978-03-09 | Generation circuit for low frequency voltage |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54119817A true JPS54119817A (en) | 1979-09-18 |
Family
ID=12217801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2732178A Pending JPS54119817A (en) | 1978-03-09 | 1978-03-09 | Generation circuit for low frequency voltage |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54119817A (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6110352A (ja) * | 1984-06-26 | 1986-01-17 | Fujitsu Ltd | 加入者線インタフエ−ス回路 |
JPS63211648A (ja) * | 1988-01-29 | 1988-09-02 | Hitachi Ltd | 樹脂封止型半導体装置 |
JPH0652260U (ja) * | 1990-12-20 | 1994-07-15 | 富士通株式会社 | 加入者線インタフェース回路 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4873649A (ja) * | 1972-01-06 | 1973-10-04 |
-
1978
- 1978-03-09 JP JP2732178A patent/JPS54119817A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4873649A (ja) * | 1972-01-06 | 1973-10-04 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6110352A (ja) * | 1984-06-26 | 1986-01-17 | Fujitsu Ltd | 加入者線インタフエ−ス回路 |
JPS63211648A (ja) * | 1988-01-29 | 1988-09-02 | Hitachi Ltd | 樹脂封止型半導体装置 |
JPH0652260U (ja) * | 1990-12-20 | 1994-07-15 | 富士通株式会社 | 加入者線インタフェース回路 |
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