DE2952353A1 - Zweidraht-vierdraht-fernmeldeleitungsschaltung - Google Patents
Zweidraht-vierdraht-fernmeldeleitungsschaltungInfo
- Publication number
- DE2952353A1 DE2952353A1 DE19792952353 DE2952353A DE2952353A1 DE 2952353 A1 DE2952353 A1 DE 2952353A1 DE 19792952353 DE19792952353 DE 19792952353 DE 2952353 A DE2952353 A DE 2952353A DE 2952353 A1 DE2952353 A1 DE 2952353A1
- Authority
- DE
- Germany
- Prior art keywords
- line
- wire
- line circuit
- impedance
- dipl
- 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.)
- Granted
Links
- 239000000758 substrate Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000007736 thin film deposition technique Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/581—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using a transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (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)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7850385A GB2041700B (en) | 1978-12-30 | 1978-12-30 | Balance on 2-4 wire hybrid circuits |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2952353A1 true DE2952353A1 (de) | 1980-07-10 |
| DE2952353C2 DE2952353C2 (https=) | 1988-01-21 |
Family
ID=10502017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19792952353 Granted DE2952353A1 (de) | 1978-12-30 | 1979-12-24 | Zweidraht-vierdraht-fernmeldeleitungsschaltung |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4289939A (https=) |
| JP (1) | JPS5593331A (https=) |
| BR (1) | BR7907893A (https=) |
| CA (1) | CA1131821A (https=) |
| DE (1) | DE2952353A1 (https=) |
| FR (1) | FR2445673A1 (https=) |
| GB (1) | GB2041700B (https=) |
| IE (1) | IE48923B1 (https=) |
| NL (1) | NL7909147A (https=) |
| NZ (1) | NZ192463A (https=) |
| SE (1) | SE437099B (https=) |
| ZA (1) | ZA796286B (https=) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4577255A (en) * | 1984-06-20 | 1986-03-18 | Itt Corporation | Lightning protection circuit for digital subscriber loop interface |
| US4757528A (en) * | 1986-09-05 | 1988-07-12 | Harris Corporation | Thermally coupled information transmission across electrical isolation boundaries |
| USD776637S1 (en) * | 2014-09-22 | 2017-01-17 | Ching-Wen Chen | Earhook microphone |
| USD843347S1 (en) | 2016-10-18 | 2019-03-19 | Samson Technologies Corp. | Head-worn microphone |
| WO2020016960A1 (ja) | 2018-07-18 | 2020-01-23 | 三菱電機株式会社 | 高調波電流補償装置および空気調和システム |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1126941B (de) * | 1960-09-30 | 1962-04-05 | Siemens Ag | Schaltungsanordnung zum Ausregeln des Daempfungsunterschiedes verschieden langer Fernmeldeleitungen |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL269763A (https=) * | 1960-09-30 | |||
| US4132863A (en) * | 1977-12-20 | 1979-01-02 | Bell Telephone Laboratories, Incorporated | Automatic gain and return loss compensating line circuit |
-
1978
- 1978-12-30 GB GB7850385A patent/GB2041700B/en not_active Expired
-
1979
- 1979-11-20 ZA ZA00796286A patent/ZA796286B/xx unknown
- 1979-11-27 CA CA340,721A patent/CA1131821A/en not_active Expired
- 1979-12-04 BR BR7907893A patent/BR7907893A/pt unknown
- 1979-12-19 NZ NZ192463A patent/NZ192463A/xx unknown
- 1979-12-19 NL NL7909147A patent/NL7909147A/nl not_active Application Discontinuation
- 1979-12-24 FR FR7931596A patent/FR2445673A1/fr not_active Withdrawn
- 1979-12-24 DE DE19792952353 patent/DE2952353A1/de active Granted
- 1979-12-27 SE SE7910671A patent/SE437099B/sv not_active IP Right Cessation
- 1979-12-27 JP JP17396779A patent/JPS5593331A/ja active Granted
- 1979-12-28 US US06/108,179 patent/US4289939A/en not_active Expired - Lifetime
- 1979-12-28 IE IE2529/79A patent/IE48923B1/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1126941B (de) * | 1960-09-30 | 1962-04-05 | Siemens Ag | Schaltungsanordnung zum Ausregeln des Daempfungsunterschiedes verschieden langer Fernmeldeleitungen |
Also Published As
| Publication number | Publication date |
|---|---|
| BR7907893A (pt) | 1980-07-29 |
| GB2041700B (en) | 1982-12-08 |
| SE7910671L (sv) | 1980-07-01 |
| NL7909147A (nl) | 1980-07-02 |
| US4289939A (en) | 1981-09-15 |
| NZ192463A (en) | 1982-05-25 |
| ZA796286B (en) | 1980-11-26 |
| DE2952353C2 (https=) | 1988-01-21 |
| CA1131821A (en) | 1982-09-14 |
| IE792529L (en) | 1980-06-30 |
| FR2445673A1 (fr) | 1980-07-25 |
| SE437099B (sv) | 1985-02-04 |
| JPS6237852B2 (https=) | 1987-08-14 |
| JPS5593331A (en) | 1980-07-15 |
| IE48923B1 (en) | 1985-06-12 |
| GB2041700A (en) | 1980-09-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8127 | New person/name/address of the applicant |
Owner name: PLESSEY OVERSEAS LTD., ILFORD, ESSEX, GB |
|
| 8128 | New person/name/address of the agent |
Representative=s name: PRINZ, E., DIPL.-ING. HAUSER, G., DIPL.-CHEM. DR.R |
|
| 8110 | Request for examination paragraph 44 | ||
| 8128 | New person/name/address of the agent |
Representative=s name: PRINZ, E., DIPL.-ING. LEISER, G., DIPL.-ING., PAT. |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |