SE440582B - Elektronisk krets i en indikeringsanordning - Google Patents
Elektronisk krets i en indikeringsanordningInfo
- Publication number
- SE440582B SE440582B SE8002547A SE8002547A SE440582B SE 440582 B SE440582 B SE 440582B SE 8002547 A SE8002547 A SE 8002547A SE 8002547 A SE8002547 A SE 8002547A SE 440582 B SE440582 B SE 440582B
- Authority
- SE
- Sweden
- Prior art keywords
- current
- loop
- voltage
- transformers
- circuit
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/15—Indicating the presence of current
-
- 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
- G01R31/44—Testing lamps
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/20—Responsive to malfunctions or to light source life; for protection
- H05B47/23—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in series
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Measurement Of Current Or Voltage (AREA)
- Traffic Control Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK138279A DK146840C (da) | 1979-04-04 | 1979-04-04 | Kontrolapparat, fortrinsvis anvendeligt til indikering af antallet af overbraendte lamper i en lufthavns belysningsanlaeg |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8002547L SE8002547L (sv) | 1980-10-05 |
SE440582B true SE440582B (sv) | 1985-08-05 |
Family
ID=8104252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8002547A SE440582B (sv) | 1979-04-04 | 1980-04-02 | Elektronisk krets i en indikeringsanordning |
Country Status (7)
Country | Link |
---|---|
US (1) | US4323841A (fi) |
BE (1) | BE882616A (fi) |
DE (1) | DE3012726A1 (fi) |
DK (1) | DK146840C (fi) |
FI (1) | FI69521C (fi) |
GB (1) | GB2050726B (fi) |
SE (1) | SE440582B (fi) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4650037A (en) * | 1985-06-05 | 1987-03-17 | Westinghouse Electric Corp. | Elevator system |
US4646058A (en) * | 1985-06-05 | 1987-02-24 | Westinghouse Electric Corp. | Elevator system with lamp failure monitoring |
BE902709A (fr) * | 1985-06-20 | 1985-12-20 | Backer Adrien Sa | Procede et dispositif de surveillance de balises lumineuses. |
IT1211687B (it) * | 1987-07-29 | 1989-11-03 | Vitroselenia S P A In El Ingeg | Sistema di rilevamento dei guasti sui circuiti d'illuminazione con alimentazione in serie, particolarmente idoneo per aeroporti |
ES2024296A6 (es) * | 1990-08-06 | 1992-02-16 | Electronic Traffic Sa | Procedimiento para la deteccion de fallos en el alumbrado publico> |
US5581229A (en) * | 1990-12-19 | 1996-12-03 | Hunt Technologies, Inc. | Communication system for a power distribution line |
US6097191A (en) * | 1996-03-21 | 2000-08-01 | Carolina Power & Light Company | Testing high intensity discharge lamp fixtures |
US6232726B1 (en) * | 1999-12-28 | 2001-05-15 | Philips Electronics North America Corporation | Ballast scheme for operating multiple lamps |
WO2001063976A1 (de) * | 2000-02-21 | 2001-08-30 | Siemens Aktiengesellschaft | Lampenausfall- und isolationsmeldesystem |
US7557733B1 (en) | 2006-12-06 | 2009-07-07 | Roger Bieberdorf | Airfield lighting system with regulator selector |
NO330211B1 (no) * | 2009-09-25 | 2011-03-07 | Ledlight Group As | Administrasjon og vedlikehold av belysningsinnretninger |
CN102540001B (zh) * | 2012-02-16 | 2014-09-24 | 云南电网公司 | 500kV变电站模拟穿越式三相短路检验交流电流回路的方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3061828A (en) * | 1958-03-11 | 1962-10-30 | Basic Products Corp | Circuit means |
US3054991A (en) * | 1959-07-02 | 1962-09-18 | Gen Electric | Load monitoring circuit |
BE794608A (fr) * | 1972-01-28 | 1973-05-16 | Plessey Handel Investment Ag | Perfectionnements relatifs a des agencements de circuits |
-
1979
- 1979-04-04 DK DK138279A patent/DK146840C/da not_active IP Right Cessation
-
1980
- 1980-03-31 GB GB8010804A patent/GB2050726B/en not_active Expired
- 1980-04-01 DE DE19803012726 patent/DE3012726A1/de active Granted
- 1980-04-01 FI FI801028A patent/FI69521C/fi not_active IP Right Cessation
- 1980-04-01 US US06/136,353 patent/US4323841A/en not_active Expired - Lifetime
- 1980-04-02 SE SE8002547A patent/SE440582B/sv not_active IP Right Cessation
- 1980-04-03 BE BE0/200101A patent/BE882616A/fr not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI69521B (fi) | 1985-10-31 |
BE882616A (fr) | 1980-10-03 |
DK138279A (da) | 1980-10-05 |
SE8002547L (sv) | 1980-10-05 |
FI69521C (fi) | 1986-02-10 |
DK146840B (da) | 1984-01-16 |
US4323841A (en) | 1982-04-06 |
DE3012726C2 (fi) | 1990-08-09 |
DE3012726A1 (de) | 1980-10-16 |
DK146840C (da) | 1984-07-02 |
GB2050726A (en) | 1981-01-07 |
FI801028A (fi) | 1980-10-05 |
GB2050726B (en) | 1982-11-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 8002547-1 Effective date: 19911108 Format of ref document f/p: F |