CA1105162A - Circuit telephonique - Google Patents
Circuit telephoniqueInfo
- Publication number
- CA1105162A CA1105162A CA296,137A CA296137A CA1105162A CA 1105162 A CA1105162 A CA 1105162A CA 296137 A CA296137 A CA 296137A CA 1105162 A CA1105162 A CA 1105162A
- Authority
- CA
- Canada
- Prior art keywords
- tip
- differential amplifier
- output
- input
- amplifier means
- 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
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 abstract description 6
- 101000610118 Homo sapiens Pre-B-cell leukemia transcription factor 4 Proteins 0.000 abstract 1
- 102100040167 Pre-B-cell leukemia transcription factor 4 Human genes 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 241001481828 Glyptocephalus cynoglossus Species 0.000 description 1
- 101100256737 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hlm-1 gene Proteins 0.000 description 1
- 101150062207 SET9 gene Proteins 0.000 description 1
- 241000289690 Xenarthra Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- QHGVXILFMXYDRS-UHFFFAOYSA-N pyraclofos Chemical compound C1=C(OP(=O)(OCC)SCCC)C=NN1C1=CC=C(Cl)C=C1 QHGVXILFMXYDRS-UHFFFAOYSA-N 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
- Amplifiers (AREA)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53055443A JPS5921237B2 (ja) | 1978-02-01 | 1978-05-09 | 電話ライン回路 |
| US05/906,772 US4178485A (en) | 1978-02-01 | 1978-05-17 | Transformerless telephone line circuit |
| DE2824468A DE2824468C2 (de) | 1978-02-01 | 1978-06-03 | Telefonverstärkerschaltung |
| FR7822336A FR2416600B1 (fr) | 1978-02-01 | 1978-07-24 | Circuit de ligne telephonique |
| GB7848666A GB2014398B (en) | 1978-02-01 | 1978-12-15 | Telephone line circuit |
| FR7917277A FR2460076B2 (fr) | 1978-02-01 | 1979-06-27 | Circuit de ligne telephonique |
| US06/062,989 US4281219A (en) | 1978-02-01 | 1979-08-02 | Telephone line circuit |
| CA000371449A CA1117232A (fr) | 1978-02-01 | 1981-02-20 | Circuit de ligne telephonique |
| GB08200788A GB2106345B (en) | 1978-02-01 | 1982-01-12 | Telephone line circuit |
| JP57124279A JPS5853556B2 (ja) | 1978-02-01 | 1982-07-15 | 電話ライン回路用増幅回路 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792925444 DE2925444C2 (de) | 1979-06-23 | 1979-06-23 | Telefonverstärkerschaltung |
| DEP2925444.2 | 1979-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1105162A true CA1105162A (fr) | 1981-07-14 |
Family
ID=6074008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA296,137A Expired CA1105162A (fr) | 1978-02-01 | 1978-02-01 | Circuit telephonique |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1105162A (fr) |
| DE (1) | DE2925444C2 (fr) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3889072A (en) * | 1973-10-19 | 1975-06-10 | Itt | Bi-directional amplification apparatus |
-
1978
- 1978-02-01 CA CA296,137A patent/CA1105162A/fr not_active Expired
-
1979
- 1979-06-23 DE DE19792925444 patent/DE2925444C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2925444A1 (de) | 1981-01-15 |
| DE2925444C2 (de) | 1985-07-04 |
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| Publication | Publication Date | Title |
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| GB1602472A (en) | Compensation of transmission losses in a telephone system | |
| DE1901337B2 (de) | Aktive rueckhoerdaempfende sprechschaltung fuer fernsprech apparat | |
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| US4622441A (en) | Two-wire/four wire communication interface with noise rejection | |
| CA1117232A (fr) | Circuit de ligne telephonique | |
| GB2106345A (en) | Telephone line circuit | |
| US4278843A (en) | Two-way amplifier arrangement | |
| DE3046328A1 (de) | Aktive sprechschaltung fuer einen fernsprechapparat | |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |