SE446798B - Forsterkare for anvendning bl a i en abonnentlinjekrets - Google Patents
Forsterkare for anvendning bl a i en abonnentlinjekretsInfo
- Publication number
- SE446798B SE446798B SE8003419A SE8003419A SE446798B SE 446798 B SE446798 B SE 446798B SE 8003419 A SE8003419 A SE 8003419A SE 8003419 A SE8003419 A SE 8003419A SE 446798 B SE446798 B SE 446798B
- Authority
- SE
- Sweden
- Prior art keywords
- amplifier
- transistor
- output
- resistor
- emitter
- Prior art date
Links
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000020169 heat generation Effects 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 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
- H04M19/005—Feeding arrangements without the use of line transformers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7903663A NL7903663A (nl) | 1979-05-10 | 1979-05-10 | Versterker voor toepassing in een lijncircuit. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE446798B true SE446798B (sv) | 1986-10-06 |
Family
ID=19833138
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8003419A SE446798B (sv) | 1979-05-10 | 1980-05-07 | Forsterkare for anvendning bl a i en abonnentlinjekrets |
| SE8003419D SE8003419L (sv) | 1979-05-10 | 1980-05-07 | Forsterkare i linjekrets |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8003419D SE8003419L (sv) | 1979-05-10 | 1980-05-07 | Forsterkare i linjekrets |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4340869A (enExample) |
| JP (1) | JPS55151852A (enExample) |
| AU (1) | AU543026B2 (enExample) |
| BE (1) | BE883194A (enExample) |
| CA (1) | CA1151331A (enExample) |
| DE (1) | DE3017566C2 (enExample) |
| FR (1) | FR2456431A1 (enExample) |
| GB (1) | GB2050762B (enExample) |
| IT (1) | IT1131453B (enExample) |
| NL (1) | NL7903663A (enExample) |
| SE (2) | SE446798B (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6239648B1 (en) | 1996-11-08 | 2001-05-29 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for dissipating heat in an electric device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2135854B (en) * | 1983-02-10 | 1986-04-23 | Robert James Redding | Line-powered modem |
| NL8403549A (nl) * | 1984-11-22 | 1986-06-16 | Philips Nv | Versterkerschakeling. |
| FR2637752A1 (fr) * | 1988-10-07 | 1990-04-13 | Radiotechnique Compelec | Dispositif de limitation de courant de ligne pour terminal telephonique |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3304513A (en) * | 1959-02-02 | 1967-02-14 | Franklin F Offner | Differential direct-current amplifier |
| DE2159095C3 (de) * | 1971-11-29 | 1985-01-24 | Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | In der Verstärkung einstellbarer mehrstufiger Verstärker mit niederohmigem Eingangs- und Ausgangswiderstand |
| US3896393A (en) * | 1973-12-26 | 1975-07-22 | Motorola Inc | Monolithic power amplifier capable of operating class a and class ab |
| CH586983A5 (enExample) * | 1974-12-23 | 1977-04-15 | Ibm | |
| US4064377A (en) * | 1976-03-11 | 1977-12-20 | Wescom Switching, Inc. | Electronic hybrid and hybrid repeater |
| FR2371840A1 (fr) * | 1976-10-04 | 1978-06-16 | Ibm France | Circuit d'interface |
| GB1527293A (en) * | 1977-04-21 | 1978-10-04 | Garwell K | Composite collector load for class a semiconductor amplifier |
| US4211896A (en) * | 1977-10-17 | 1980-07-08 | Telecommunications Radioelectrique Et Telephoniques T.R.T. | Subscriber's circuit with a symmetrical amplifier |
| FR2406357A1 (fr) * | 1977-10-17 | 1979-05-11 | Trt Telecom Radio Electr | Joncteur d'abonne telephonique |
| US4268798A (en) * | 1977-12-19 | 1981-05-19 | Motorola, Inc. | High performance summing amplifier |
-
1979
- 1979-05-10 NL NL7903663A patent/NL7903663A/nl not_active Application Discontinuation
-
1980
- 1980-04-21 US US06/142,274 patent/US4340869A/en not_active Expired - Lifetime
- 1980-05-02 GB GB8014760A patent/GB2050762B/en not_active Expired
- 1980-05-06 AU AU58118/80A patent/AU543026B2/en not_active Ceased
- 1980-05-07 IT IT21868/80A patent/IT1131453B/it active
- 1980-05-07 CA CA000351418A patent/CA1151331A/en not_active Expired
- 1980-05-07 SE SE8003419A patent/SE446798B/sv not_active IP Right Cessation
- 1980-05-07 SE SE8003419D patent/SE8003419L/xx not_active Application Discontinuation
- 1980-05-08 JP JP6006180A patent/JPS55151852A/ja active Granted
- 1980-05-08 DE DE3017566A patent/DE3017566C2/de not_active Expired
- 1980-05-08 BE BE0/200535A patent/BE883194A/fr not_active IP Right Cessation
- 1980-05-09 FR FR8010453A patent/FR2456431A1/fr active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6239648B1 (en) | 1996-11-08 | 2001-05-29 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for dissipating heat in an electric device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6333755B2 (enExample) | 1988-07-06 |
| IT1131453B (it) | 1986-06-25 |
| IT8021868A0 (it) | 1980-05-07 |
| GB2050762A (en) | 1981-01-07 |
| NL7903663A (nl) | 1980-11-12 |
| BE883194A (fr) | 1980-11-10 |
| SE8003419L (sv) | 1980-11-11 |
| DE3017566A1 (de) | 1980-11-13 |
| DE3017566C2 (de) | 1985-10-10 |
| FR2456431A1 (fr) | 1980-12-05 |
| JPS55151852A (en) | 1980-11-26 |
| CA1151331A (en) | 1983-08-02 |
| GB2050762B (en) | 1983-03-16 |
| AU5811880A (en) | 1980-11-13 |
| US4340869A (en) | 1982-07-20 |
| AU543026B2 (en) | 1985-03-28 |
| FR2456431B1 (enExample) | 1984-12-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAL | Patent in force |
Ref document number: 8003419-2 |
|
| NUG | Patent has lapsed |
Ref document number: 8003419-2 |