JPS643387B2 - - Google Patents
Info
- Publication number
- JPS643387B2 JPS643387B2 JP5958280A JP5958280A JPS643387B2 JP S643387 B2 JPS643387 B2 JP S643387B2 JP 5958280 A JP5958280 A JP 5958280A JP 5958280 A JP5958280 A JP 5958280A JP S643387 B2 JPS643387 B2 JP S643387B2
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- line
- current
- output
- 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.)
- Expired
Links
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- H04M19/008—Using DC/DC converters
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7903664A NL7903664A (nl) | 1979-05-10 | 1979-05-10 | Lijncircuit. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55150659A JPS55150659A (en) | 1980-11-22 |
| JPS643387B2 true JPS643387B2 (en]) | 1989-01-20 |
Family
ID=19833139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5958280A Granted JPS55150659A (en) | 1979-05-10 | 1980-05-07 | Line circuit |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4314106A (en]) |
| JP (1) | JPS55150659A (en]) |
| AU (1) | AU533095B2 (en]) |
| BE (1) | BE883195A (en]) |
| BR (1) | BR8002805A (en]) |
| CA (1) | CA1138138A (en]) |
| CH (1) | CH647906A5 (en]) |
| DE (1) | DE3017567C2 (en]) |
| FR (1) | FR2456439B1 (en]) |
| IT (1) | IT1131452B (en]) |
| NL (1) | NL7903664A (en]) |
| SE (1) | SE448663B (en]) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5637768A (en) * | 1979-09-04 | 1981-04-11 | Fujitsu Ltd | Call current supply system |
| NL8100242A (nl) * | 1981-01-20 | 1982-08-16 | Philips Nv | Overspanningsbeveiliging van een lijncircuit. |
| US4388500A (en) * | 1981-02-27 | 1983-06-14 | Wescom, Inc. | Electronic hybrid |
| US4476351A (en) * | 1982-03-25 | 1984-10-09 | Rockwell International Corporation | Subscriber loop current regulator |
| US5148475A (en) * | 1990-04-06 | 1992-09-15 | Harris Corporation | Reduced contact resistance on a SLIC |
| US5172409A (en) * | 1990-07-02 | 1992-12-15 | Motorola, Inc. | Precision FET control loop |
| US5124586A (en) * | 1991-08-16 | 1992-06-23 | Sgs-Thomson Microelectronics, Inc. | Impedance multiplier |
| JPH11514828A (ja) * | 1996-09-03 | 1999-12-14 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | 電子的なインピダンスの電源回路 |
| DE102010011486A1 (de) * | 2010-03-16 | 2011-09-22 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Rotor für eine Ladeeinrichtung |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH586983A5 (en]) * | 1974-12-23 | 1977-04-15 | Ibm | |
| US4004109A (en) * | 1975-05-09 | 1977-01-18 | Boxall Frank S | Hybrid circuit |
| CH599731A5 (en]) * | 1976-03-02 | 1978-05-31 | Ibm | |
| US4064377A (en) * | 1976-03-11 | 1977-12-20 | Wescom Switching, Inc. | Electronic hybrid and hybrid repeater |
| US4041252A (en) * | 1976-06-07 | 1977-08-09 | North Electric Company | Transformerless two-wire/four-wire hybrid with DC sourcing capability |
| US4037065A (en) * | 1976-10-04 | 1977-07-19 | The United States Of America As Represented By The Secretary Of The Navy | 20 Hz Ringdown solid state two-wire/four-wire converter |
| FR2371840A1 (fr) * | 1976-10-04 | 1978-06-16 | Ibm France | Circuit d'interface |
| GB1583634A (en) * | 1977-03-02 | 1981-01-28 | Int Standard Electric Corp | Subscriber line/trunk circuit |
| US4203012A (en) * | 1977-07-14 | 1980-05-13 | Boxall Frank S | Hybrid circuit using current mirror circuits |
| US4142075A (en) * | 1977-10-11 | 1979-02-27 | Burr-Brown Research Corporation | Interface circuit and method for telephone extension lines |
-
1979
- 1979-05-10 NL NL7903664A patent/NL7903664A/nl not_active Application Discontinuation
-
1980
- 1980-04-21 US US06/142,275 patent/US4314106A/en not_active Expired - Lifetime
- 1980-05-06 AU AU58117/80A patent/AU533095B2/en not_active Ceased
- 1980-05-07 CH CH3564/80A patent/CH647906A5/de not_active IP Right Cessation
- 1980-05-07 BR BR8002805A patent/BR8002805A/pt unknown
- 1980-05-07 IT IT21867/80A patent/IT1131452B/it active
- 1980-05-07 JP JP5958280A patent/JPS55150659A/ja active Granted
- 1980-05-07 SE SE8003399A patent/SE448663B/sv not_active IP Right Cessation
- 1980-05-07 CA CA000351419A patent/CA1138138A/en not_active Expired
- 1980-05-08 DE DE3017567A patent/DE3017567C2/de not_active Expired
- 1980-05-08 BE BE0/200536A patent/BE883195A/fr not_active IP Right Cessation
- 1980-05-09 FR FR8010454A patent/FR2456439B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55150659A (en) | 1980-11-22 |
| FR2456439A1 (fr) | 1980-12-05 |
| AU5811780A (en) | 1980-11-13 |
| SE448663B (sv) | 1987-03-09 |
| DE3017567C2 (de) | 1985-02-07 |
| IT1131452B (it) | 1986-06-25 |
| DE3017567A1 (de) | 1980-11-13 |
| BE883195A (fr) | 1980-11-10 |
| NL7903664A (nl) | 1980-11-12 |
| IT8021867A0 (it) | 1980-05-07 |
| SE8003399L (sv) | 1980-11-11 |
| CA1138138A (en) | 1982-12-21 |
| CH647906A5 (de) | 1985-02-15 |
| FR2456439B1 (fr) | 1987-07-31 |
| US4314106A (en) | 1982-02-02 |
| BR8002805A (pt) | 1980-12-16 |
| AU533095B2 (en) | 1983-10-27 |
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