JPH0342825B2 - - Google Patents
Info
- Publication number
- JPH0342825B2 JPH0342825B2 JP59158156A JP15815684A JPH0342825B2 JP H0342825 B2 JPH0342825 B2 JP H0342825B2 JP 59158156 A JP59158156 A JP 59158156A JP 15815684 A JP15815684 A JP 15815684A JP H0342825 B2 JPH0342825 B2 JP H0342825B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- current
- circuit
- amplifier
- line terminals
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6025—Substation equipment, e.g. for use by subscribers including speech amplifiers implemented as integrated speech networks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15815684A JPS6135661A (ja) | 1984-07-28 | 1984-07-28 | 電話機回路 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15815684A JPS6135661A (ja) | 1984-07-28 | 1984-07-28 | 電話機回路 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6135661A JPS6135661A (ja) | 1986-02-20 |
| JPH0342825B2 true JPH0342825B2 (OSRAM) | 1991-06-28 |
Family
ID=15665486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15815684A Granted JPS6135661A (ja) | 1984-07-28 | 1984-07-28 | 電話機回路 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6135661A (OSRAM) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181324B (en) * | 1985-10-07 | 1989-02-01 | Motorola Inc | Telephone circuits |
| FR2686757B1 (fr) * | 1992-01-29 | 1997-03-28 | Sgs Thomson Microelectronics | Modulateur du courant d'une ligne telephonique. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5494213A (en) * | 1978-01-10 | 1979-07-25 | Nec Corp | Amplifier for transmitter |
-
1984
- 1984-07-28 JP JP15815684A patent/JPS6135661A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6135661A (ja) | 1986-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4514595A (en) | Active impedance line feed circuit | |
| EP0272800A2 (en) | Active impedance line feed circuit | |
| US4933625A (en) | Driving circuit for controlling output voltage to be applied to a load in accordance with load resistance | |
| CA2077522C (en) | Battery feed circuit for supplying feed current to telephone set | |
| US4431874A (en) | Balanced current multiplier circuit for a subscriber loop interface circuit | |
| TW384594B (en) | Electronic speech-circuit arrangement | |
| JPS6145424B2 (OSRAM) | ||
| JPS62131657A (ja) | 電話機用電源供給回路 | |
| US4436961A (en) | Communications system connecting circuit for controlling derivation of operating power from subscriber line current | |
| US4485341A (en) | Current limiter circuit | |
| JPH0342825B2 (OSRAM) | ||
| CA1179078A (en) | Active impedance line feed circuit | |
| US4723280A (en) | Constant current line circuit | |
| GB2120498A (en) | Regulator circuit | |
| US4856058A (en) | Office line interface circuits | |
| US4723278A (en) | Voice circuit of telephone | |
| US6091284A (en) | Current control circuit | |
| JPS60142655A (ja) | 音声伝送回路 | |
| JPS61253969A (ja) | 電話用給電回路 | |
| JPH0568142B2 (OSRAM) | ||
| EP0485926B1 (en) | Constant-absorption circuit for the bidirectional transfer of an alternating signal | |
| JPH071872Y2 (ja) | 半導体集積回路 | |
| JPS624736B2 (OSRAM) | ||
| JPH0414824B2 (OSRAM) | ||
| JPS6028365A (ja) | 平衡回路網 |