FR2079208B1 - - Google Patents
Info
- Publication number
- FR2079208B1 FR2079208B1 FR7103393A FR7103393A FR2079208B1 FR 2079208 B1 FR2079208 B1 FR 2079208B1 FR 7103393 A FR7103393 A FR 7103393A FR 7103393 A FR7103393 A FR 7103393A FR 2079208 B1 FR2079208 B1 FR 2079208B1
- Authority
- FR
- France
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Locating Faults (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702004848 DE2004848A1 (de) | 1970-02-03 | 1970-02-03 | Schaltungsanordnung zum Ermitteln von Fehler oder Inhomogemtatsstellen auf elektrischen Leitungen bzw Kabeln |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2079208A1 FR2079208A1 (fr) | 1971-11-12 |
FR2079208B1 true FR2079208B1 (fr) | 1975-03-21 |
Family
ID=5761307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7103393A Expired FR2079208B1 (fr) | 1970-02-03 | 1971-02-02 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3710240A (fr) |
DE (1) | DE2004848A1 (fr) |
FR (1) | FR2079208B1 (fr) |
GB (1) | GB1320814A (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH609181A5 (fr) * | 1975-06-12 | 1979-02-15 | Bbc Brown Boveri & Cie | |
FR2334116A2 (fr) * | 1975-12-03 | 1977-07-01 | Metraplan Spa | Procede et dispositif destine a la localisation des defauts des lignes de securite pour remontees mecaniques |
SE442920B (sv) * | 1984-06-15 | 1986-02-03 | Asea Ab | Forfarande och anordning for detektering och lokalisering av ett felstelle pa en kraftledning |
US4638244A (en) * | 1984-10-22 | 1987-01-20 | General Electric Company | Ground connection monitor |
US4932615A (en) * | 1988-10-12 | 1990-06-12 | Electric Power Research Institute | Railroad track simulator for assessing track signal susceptibility to electric power line interference |
US5057783A (en) * | 1990-02-16 | 1991-10-15 | Beckman Industrial Corporation | Automatic impedance matching |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1519870A (en) * | 1920-01-28 | 1924-12-16 | Western Union Telegraph Co | Balancing ocean-cable system |
US2345932A (en) * | 1941-03-26 | 1944-04-04 | Bell Telephone Labor Inc | Measuring apparatus |
US2476317A (en) * | 1943-05-08 | 1949-07-19 | Western Union Telegraph Co | Apparatus and method for fault locations |
US2800627A (en) * | 1953-05-18 | 1957-07-23 | Comp Generale Electricite | Device for the measurement of the irregularities of electrical lines |
US2872643A (en) * | 1956-05-07 | 1959-02-03 | Crosby Broadcasting Corp | Electrical measuring instrument |
NL238727A (fr) * | 1958-04-30 | 1900-01-01 | ||
US3156865A (en) * | 1960-04-20 | 1964-11-10 | Western Electric Co | Pulse echo test set calibration circuit and method |
US3115603A (en) * | 1961-09-20 | 1963-12-24 | Phillips Petroleum Co | Capacitance measuring bridge utilizing voltage-sensitive capacitors for rebalancing the bridge |
DE1233488B (de) * | 1962-09-28 | 1967-02-02 | Siemens Ag | Verstaerkerschaltung zur Entzerrung der bei einer nach der Impulsreflexionsmethode arbeitenden Anordnung zum Bestimmen von Fehler- oder Inhomogenitaetsstellen einer elektrischen Leitung auftretenden reflektierten Impulsspannungen |
US3350701A (en) * | 1965-06-08 | 1967-10-31 | Bell & Howell Co | Measuring circuit employing oppositely varying voltage dependent capacitive means |
-
1970
- 1970-02-03 DE DE19702004848 patent/DE2004848A1/de active Pending
-
1971
- 1971-02-01 US US00111373A patent/US3710240A/en not_active Expired - Lifetime
- 1971-02-02 FR FR7103393A patent/FR2079208B1/fr not_active Expired
- 1971-04-19 GB GB2103271A patent/GB1320814A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3710240A (en) | 1973-01-09 |
FR2079208A1 (fr) | 1971-11-12 |
GB1320814A (en) | 1973-06-20 |
DE2004848A1 (de) | 1971-08-19 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |