MX3921E - Mejoras en repetidor tipo amplificador para lineas de transmision telefonicas - Google Patents
Mejoras en repetidor tipo amplificador para lineas de transmision telefonicasInfo
- Publication number
- MX3921E MX3921E MX767419U MX741976U MX3921E MX 3921 E MX3921 E MX 3921E MX 767419 U MX767419 U MX 767419U MX 741976 U MX741976 U MX 741976U MX 3921 E MX3921 E MX 3921E
- Authority
- MX
- Mexico
- Prior art keywords
- transmission lines
- telephone transmission
- amplifier type
- repeater amplifier
- repeater
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/36—Repeater circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/560,258 US3989906A (en) | 1975-03-20 | 1975-03-20 | Repeater for transmission lines |
Publications (1)
Publication Number | Publication Date |
---|---|
MX3921E true MX3921E (es) | 1981-09-23 |
Family
ID=24237017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX767419U MX3921E (es) | 1975-03-20 | 1976-03-18 | Mejoras en repetidor tipo amplificador para lineas de transmision telefonicas |
Country Status (3)
Country | Link |
---|---|
US (1) | US3989906A (es) |
CA (1) | CA1052921A (es) |
MX (1) | MX3921E (es) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4065646A (en) * | 1976-06-28 | 1977-12-27 | Bell Telephone Laboratories, Incorporated | Power converter |
US4049928A (en) * | 1976-06-30 | 1977-09-20 | Northern Telecom Limited | Self-adjusting voice frequency repeater |
US4135064A (en) * | 1977-08-15 | 1979-01-16 | Northern Telecom Limited | Impedance compensation of transmission line |
US4192974A (en) * | 1978-03-20 | 1980-03-11 | Lorain Products Corporation | Multi-section apparatus for improving signal transmission through telephone transmission lines |
US4393491A (en) * | 1980-11-05 | 1983-07-12 | Anaconda-Ericsson | Automatic self-test system for a digital multiplexed telecommunication system |
GB2137057B (en) * | 1983-03-18 | 1986-07-02 | Telspec Ltd | Improvements in and relating to signal transmission devices |
US4837780A (en) * | 1987-07-27 | 1989-06-06 | Northern Telecom Limited | Transmit line buildout circuits |
GB2320380B (en) * | 1996-12-11 | 2001-09-12 | Nokia Mobile Phones Ltd | A telephone line interface |
US8897974B2 (en) * | 2010-06-07 | 2014-11-25 | Gm Global Technology Operations, Llc | Gear selector system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3706862A (en) * | 1971-06-28 | 1972-12-19 | Lorain Prod Corp | Amplifier circuit for transmission lines |
US3731012A (en) * | 1971-09-30 | 1973-05-01 | Stromberg Carlson Corp | Current limiting and resistance monitoring circuit |
US3781481A (en) * | 1971-09-30 | 1973-12-25 | Stromberg Carlson Corp | Amplifier select and control circuit |
US3851108A (en) * | 1972-12-20 | 1974-11-26 | Bell Lab Inc | Communication line supervisory circuit |
US3818151A (en) * | 1973-01-26 | 1974-06-18 | Lorain Prod Corp | Method and apparatus for amplifying signal transmission through transmission lines |
US3903378A (en) * | 1974-03-27 | 1975-09-02 | Gte Automatic Electric Lab Inc | Arrangement for controlling the gain of two-way amplifiers in accordance with loop lengths |
-
1975
- 1975-03-20 US US05/560,258 patent/US3989906A/en not_active Expired - Lifetime
-
1976
- 1976-02-09 CA CA245,326A patent/CA1052921A/en not_active Expired
- 1976-03-18 MX MX767419U patent/MX3921E/es unknown
Also Published As
Publication number | Publication date |
---|---|
US3989906A (en) | 1976-11-02 |
CA1052921A (en) | 1979-04-17 |
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