NO167424B - PROCEDURE AND DEVICE FOR CONNECTION RESP. DISCONNECTING A LOAD CIRCUIT IN AN ELECTRIC AC POWER NETWORK. - Google Patents
PROCEDURE AND DEVICE FOR CONNECTION RESP. DISCONNECTING A LOAD CIRCUIT IN AN ELECTRIC AC POWER NETWORK. Download PDFInfo
- Publication number
- NO167424B NO167424B NO890930A NO890930A NO167424B NO 167424 B NO167424 B NO 167424B NO 890930 A NO890930 A NO 890930A NO 890930 A NO890930 A NO 890930A NO 167424 B NO167424 B NO 167424B
- Authority
- NO
- Norway
- Prior art keywords
- luminescent
- red
- compounds
- oxides
- screen according
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 3
- 150000001875 compounds Chemical class 0.000 claims description 28
- 229910052693 Europium Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- 150000001340 alkali metals Chemical class 0.000 claims description 7
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 claims description 6
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 4
- 229910052765 Lutetium Inorganic materials 0.000 claims description 4
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 4
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- 229910001940 europium oxide Inorganic materials 0.000 claims description 2
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052744 lithium Chemical group 0.000 claims description 2
- 229910052706 scandium Inorganic materials 0.000 claims description 2
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 4
- MCSXGCZMEPXKIW-UHFFFAOYSA-N 3-hydroxy-4-[(4-methyl-2-nitrophenyl)diazenyl]-N-(3-nitrophenyl)naphthalene-2-carboxamide Chemical compound Cc1ccc(N=Nc2c(O)c(cc3ccccc23)C(=O)Nc2cccc(c2)[N+]([O-])=O)c(c1)[N+]([O-])=O MCSXGCZMEPXKIW-UHFFFAOYSA-N 0.000 description 3
- -1 europium-activated gadolinium oxide Chemical class 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- QWVYNEUUYROOSZ-UHFFFAOYSA-N trioxido(oxo)vanadium;yttrium(3+) Chemical compound [Y+3].[O-][V]([O-])([O-])=O QWVYNEUUYROOSZ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle
- H01H2009/566—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle with self learning, e.g. measured delay is used in later actuations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Keying Circuit Devices (AREA)
Description
Luminescerende skjerm med et ved energisering Luminescent screen with a when energized
rødtopplysende luminescerende stoff og fremgangsmåte til fremstilling av dette. red-top luminescent substance and method for its production.
Foreliggende oppfinnelse angår en luminescerende skjerm, -som f.eks., kan brukes i katodestrålerør og da spesielt rør for fargefjernsyn, samt en rødt-lumineseerende, komponent som kan brukes i slike skjermer. Oppfinnelsen angår videre en fremgangsmåte for å fremstille en slik rødt-luminesce-rende komponent. The present invention relates to a luminescent screen, which, for example, can be used in cathode ray tubes and in particular tubes for color television, as well as a red-luminescent component which can be used in such screens. The invention further relates to a method for producing such a red-luminescent component.
Det har i den senere tid vær.t publisert meget med hensyn til luminescerende forbindelser, hvor man som aktivator har anvendt -et eller flere av de sjeldne jordmetaller. Spesielt har man gjort forsøk på å fremstille luminescerende forbindelser som gir dyprød emisjon ved ekssitering av elektroner, ettersom slike for.-bindelser er meget viktige i katodestrålerør for fremvisning av fargebilder, og .da spesielt televisjonsbilder. Hvis forbindelsene også kan ekssiteres,ay ultraviolett stråling, kan de brukes for å bedre fargekvaliteten i det lys som emitteres av gassutladningslamper, og da spesielt kvikksølvdamputladningslamper, ettersom dette lys vanligvis mangler røde komponenter, noe som fører til at man-ikke kan oppnå en tilfredsstillende fargegjengivelse med disse lamper. In recent times, much has been published with regard to luminescent compounds, where one or more of the rare earth metals have been used as activators. In particular, attempts have been made to produce luminescent compounds which give deep red emission when electrons are excited, as such compounds are very important in cathode ray tubes for displaying color images, and especially television images. If the compounds can also be excited, say ultraviolet radiation, they can be used to improve the color quality of the light emitted by gas discharge lamps, and especially mercury vapor discharge lamps, since this light usually lacks red components, which means that one cannot obtain a satisfactory color reproduction with these lamps.
Hensikten med tidligere undersøkelser har vært å The purpose of previous investigations has been to
oppnå en høy omdannelseseffekt, tilfredsstillende temperaturavhengig-het og en dyprød farge på det utsendte lys. Man har funnet at disse egenskaper, ofte i kombinasjon, kan oppnås med luminescerende forbindelser med vidt forskjellige krystallgittere, hvis de inneholder det sjeldne jordmetall europium i trivalent form. Man har f.eks. beskrevet europiumaktivert gadoliniumoksyd og yttriumvanadat. På grunn av deres, dyprøde emisjon er disse forbindelser spesielt godt - egnet for bruk i katodestrålerør for fargebilder. Den:emitterte stråling fra disse forbindelser har et intensitetsmaksimum mellom 600 nm og 625 nm. achieve a high conversion effect, satisfactory temperature dependence and a deep red color of the emitted light. It has been found that these properties, often in combination, can be achieved with luminescent compounds with widely different crystal lattices, if they contain the rare earth metal europium in trivalent form. One has e.g. described europium-activated gadolinium oxide and yttrium vanadate. Because of their deep-red emission, these compounds are particularly well-suited for use in cathode ray tubes for color imaging. The emitted radiation from these compounds has an intensity maximum between 600 nm and 625 nm.
Oppfinnelsen vedrører altså luminescerende skjerm The invention therefore relates to a luminescent screen
med et ved energisering rødtopplysende luminescerende stoff, som består av en med 10"^" til 4-IO<-1> mol europium aktivert, alkalimetallholdig forbindelse, idet skjermen er k a r a kt e r i:s e r t ved at den rødt-luminescerende komponent har formelen with a red-peaked luminescent substance when energized, which consists of an alkali metal-containing compound activated with 10"^" to 4-IO<-1> moles of europium, the screen being characterized in that the red-luminescent component has the formula
hvor A betegner et eller ilere alkalimetaller, og B et eller flere av de trivalente metaller yttrium, gadolinium, lutecium, lantan, scandium eller indium, og hvor x er større enn 10~^ og mindre enn 4.IO"<1>. where A denotes one or more alkali metals, and B one or more of the trivalent metals yttrium, gadolinium, lutetium, lanthanum, scandium or indium, and where x is greater than 10~^ and less than 4.IO"<1>.
Forbindelser med ovennevnte formel kan eksiteres av elektroner, kortbølget ultraviolett stråling og røntgenstråler. De kan således brukes i katodestrålerør, røntgenskjermer og i kombinasjon med gassutladningslamper, f.eks. kvikksølvdamputladningslamper. Nevnte forbindelser har en energieffektivitet som er betydelig høy-ere enn for de fleste kjente europium-aktiverte forbindelser, noe som naturligvis er meget viktig for dannelsen av bilder med høy intensi-tet i katodestrålerør. Compounds of the above formula can be excited by electrons, short-wave ultraviolet radiation and X-rays. They can thus be used in cathode ray tubes, X-ray screens and in combination with gas discharge lamps, e.g. mercury vapor discharge lamps. Said compounds have an energy efficiency that is significantly higher than for most known europium-activated compounds, which is of course very important for the formation of images with high intensity in cathode ray tubes.
Forbindelser med ovennevnte formel har i sitt emisjonsspektrum et meget trangt bånd, hvis maksimum ligger mellom 610 og 6L5 nm. I motsetning til f.eks., det kjente europiumaktivert e 'yttriumvanadat , har forbindelser i overensstemmelse med foreliggende oppfin-neise i sitt emisjonsspektrum ingen linjer ved bølgelengder utover 625 nm. Videre kan det nevnes at den grønne del av spektret i alt ve-sentlig ikke har noen emisjonslinjer, noe som ellers ofte opptrer i forbindelse med andre europium-aktiverte forbindelser. Compounds with the above formula have in their emission spectrum a very narrow band, the maximum of which lies between 610 and 615 nm. In contrast to, for example, the known europium-activated yttrium vanadate, compounds in accordance with the present invention have no lines in their emission spectrum at wavelengths beyond 625 nm. Furthermore, it can be mentioned that the green part of the spectrum essentially has no emission lines, which otherwise often occurs in connection with other europium-activated compounds.
Skjermer i overensstemmelse med foreliggende oppfinnelse har videre den store fordel, at fargelegemet for den rødt-luminescerende komponent er hvitt. Dette er spesielt viktig i forbindelse med katodestrålerør. Hvis den luminescerende forbindelse ikke er hvit, men f.eks. gul, slik det er tilfellet med de tidligere anvendte sølv-aktiverte sink-kadmiumsulfider, så betyr dette at fargen på det bildet man observerer, ikke bare er bestemt av fa-rgen på det emitterte, luminescerende lys, men delvis også av det lys som treffer skjermen fra yttersiden og reflekteres til seeren. Hvis man anvender en gulfarget forbindelse som skjermens røde komponent-, noe som er tilfellet med de forannevnte sulfider, så vil den obser-verte farge skifte over -mot oransje på grunn av reflektert innfal-lende lys. Hvis forbindelsen er hvit-farget, noe som er tilfellet med den rødt-luminescerende komponent ifølge foreliggende oppfinnelse, kan det ikke finne sted noen fargeforandring, og det eneste som kan opptre er en noe mindre mettet farge, som er langt mindre forstyrrende enn en fargeforandring. Screens in accordance with the present invention further have the great advantage that the color body for the red-luminescent component is white. This is particularly important in connection with cathode ray tubes. If the luminescent compound is not white, but e.g. yellow, as is the case with the previously used silver-activated zinc-cadmium sulphides, this means that the color of the image you observe is not only determined by the color of the emitted, luminescent light, but partly also by the light that hits the screen from the outside and is reflected to the viewer. If a yellow compound is used as the screen's red component, which is the case with the aforementioned sulphides, then the observed color will shift towards orange due to reflected incident light. If the compound is white-colored, which is the case with the red-luminescent component of the present invention, no color change can occur, and the only thing that can appear is a somewhat less saturated color, which is far less disturbing than a color change .
En luminescerende skjerm i overensstemmelse med foreliggende oppfinnelse Jiar fortrinnsvis en rødt-luminescerende komponent som inneholder natrium og/eller litium og et eller flere av elementene yttrium, gadolinium og lut-ecium. Man oppnår maksimal ener-gieffekt når disse elementer brukes. Vanligvis foretrekkes også forbindelser hvor europiummengden er så stor at x ligger mellom 2.IO-1 og ^. 1Q~^, ettersom man da oppnår den høyeste kvantøeffekt. En spesielt godt egnet forbindelse er derfor A luminescent screen in accordance with the present invention is preferably a red-luminescent component containing sodium and/or lithium and one or more of the elements yttrium, gadolinium and lutetium. Maximum energy efficiency is achieved when these elements are used. Generally, compounds are also preferred where the amount of europium is so large that x is between 2.10-1 and ^. 1Q~^, as the highest quantum effect is then achieved. A particularly well-suited compound is therefore
hvor x ligger mellom 5*10 og 2.10 ;Forbindelsene fremstilles fortrinnsvis ved å oppvarme en blanding av et eller flere av oksydene av metallene med betegnel-sen B, og et eller flere vannfrie oksyder av alkalimetaller sammen med europiumoksydL Oppvarmingen bør skje i en tørr atmosfære ved en temperatur på mellom 900 og 1200°C. I stedet for å anvende vannfrie oksyder av alkalimetallene, kan man anvende vannfrie forbindelser som dekomponeres til oksyder ved nevnte temperaturer. I denne forbindelse bør mån fortrinnsvis bruke forbindelser som dekomponerer uten at det dannes vann, f.eks. karbonater. ;Oppfinnelsen vil nå bli beskrevet i forbindelse med ;et eksempel på fremstilling av forbindelsen NaGdQ c^Euq 05°2* Eksempel. where x is between 5*10 and 2.10; The compounds are preferably prepared by heating a mixture of one or more of the oxides of the metals with the designation B, and one or more anhydrous oxides of alkali metals together with europium oxide. The heating should take place in a dry atmosphere at a temperature of between 900 and 1200°C. Instead of using anhydrous oxides of the alkali metals, you can use anhydrous compounds which decompose to oxides at the mentioned temperatures. In this connection, you should preferably use compounds that decompose without forming water, e.g. carbonates. The invention will now be described in connection with an example of the preparation of the compound NaGdQ c^Euq 05°2* Example.
Utgangsblandingen består av: The starting mixture consists of:
12,7 g vannfri Na^O^, 12.7 g anhydrous Na^O^,
34,4 g vannfri GdgO^, 34.4 g anhydrous GdgO^,
1,76 g vannfri Eu20^. 1.76 g of anhydrous Eu2O^.
Denne blanding som inneholder et sodaoverskudd på ca. 20$ for å sikre høyt utbytte av reaksjonen, blandes meget godt i en morter, hvoretter blandingen tørkes nok en gang i vakuumeksikator over silikagel. Blandingen oppvarmes- deretter i en ovn i 4 timer ved ca. 900°C i en strøm av tørr oksygen. Etter avkjøling males reaksjons-blandingen påny i en morter og tørkes deretter i vakuumeksikatoren. Blandingen holdes så oppvarmet i 4 timer på ca. 1100°C i en strøm This mixture, which contains a soda surplus of approx. 20$ to ensure a high yield of the reaction, is mixed very well in a mortar, after which the mixture is dried once more in a vacuum desiccator over silica gel. The mixture is then heated in an oven for 4 hours at approx. 900°C in a stream of dry oxygen. After cooling, the reaction mixture is ground again in a mortar and then dried in the vacuum desiccator. The mixture is then kept heated for 4 hours at approx. 1100°C in a current
av tørr oksygen. Det oppnådde reaksjonsprodukt måles og hvis nød-vendig, siktes, og er så ferdig for videre"anvendelse i en luminescerende skjerm. Forbindelsen kan eksiteres av kortbølget ultraviolett stråling med en bølgelengde på-253)7 nm °S ved elektroner. of dry oxygen. The reaction product obtained is measured and, if necessary, sieved, and is then ready for further use in a luminescent screen. The compound can be excited by short-wave ultraviolet radiation with a wavelength of -253)7 nm °S by electrons.
Forbindelser som inneholder andre alkalimetaller og/eller trivalente elementer, kan fremstilles ved en tilsvarende fremgangsmåte, idet man anvender utgangsforbindelsene i slike mengder at man oppnår det forønskede molare forhold i den ferdige rødt-luminescerende forbindelse. Compounds containing other alkali metals and/or trivalent elements can be prepared by a similar method, using the starting compounds in such quantities that the desired molar ratio is achieved in the finished red-luminescent compound.
Den etterfølgende tabell angir egenskaper for enkelte forbindelser i overensstemmelse med foreliggende oppfinnelse idet den molare sammensetning er angitt i første kolonne. The following table indicates properties for certain compounds in accordance with the present invention, the molar composition being indicated in the first column.
Claims (2)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO890930A NO167424C (en) | 1989-03-06 | 1989-03-06 | PROCEDURE AND DEVICE FOR CONNECTION RESP. DISCONNECTING A LOAD CIRCUIT IN AN ELECTRIC AC POWER NETWORK. |
| PCT/NO1990/000044 WO1990010942A1 (en) | 1989-03-06 | 1990-03-02 | Method and apparatus for connecting or disconnecting an electrical load circuit |
| AU51787/90A AU5178790A (en) | 1989-03-06 | 1990-03-02 | Method and apparatus for connecting or disconnecting an electrical load circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO890930A NO167424C (en) | 1989-03-06 | 1989-03-06 | PROCEDURE AND DEVICE FOR CONNECTION RESP. DISCONNECTING A LOAD CIRCUIT IN AN ELECTRIC AC POWER NETWORK. |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| NO890930D0 NO890930D0 (en) | 1989-03-06 |
| NO890930L NO890930L (en) | 1990-09-07 |
| NO167424B true NO167424B (en) | 1991-07-22 |
| NO167424C NO167424C (en) | 1991-10-30 |
Family
ID=19891815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO890930A NO167424C (en) | 1989-03-06 | 1989-03-06 | PROCEDURE AND DEVICE FOR CONNECTION RESP. DISCONNECTING A LOAD CIRCUIT IN AN ELECTRIC AC POWER NETWORK. |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU5178790A (en) |
| NO (1) | NO167424C (en) |
| WO (1) | WO1990010942A1 (en) |
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|---|---|---|---|---|
| US5008516A (en) * | 1988-08-04 | 1991-04-16 | Whirlpool Corporation | Relay control method and apparatus for a domestic appliance |
| EP0429158A3 (en) * | 1989-11-17 | 1991-12-27 | Louis S. Polster | Relay with control ciruit to minimize arcing |
| EP0429159A3 (en) * | 1989-11-17 | 1991-12-18 | Louis S. Polster | Relay with arc sensor |
| US5255152A (en) * | 1991-08-21 | 1993-10-19 | Eaton Corporation | Controller for fixed-time pull-in of a relay |
| WO1999000811A1 (en) * | 1997-06-25 | 1999-01-07 | Nkt Research Center A/S | A method of connecting and disconnecting an ac voltage to/from a load, as well as a switch comprising a relay |
| US8154154B2 (en) | 2009-08-11 | 2012-04-10 | Leviton Manufacturing Co., Inc. | Automatic switch configuration |
| US8324761B2 (en) | 2009-11-13 | 2012-12-04 | Leviton Manufacturing Co., Inc. | Electrical switching module |
| US8463453B2 (en) | 2009-11-13 | 2013-06-11 | Leviton Manufacturing Co., Inc. | Intelligent metering demand response |
| US8755944B2 (en) | 2009-11-13 | 2014-06-17 | Leviton Manufacturing Co., Inc. | Electrical switching module |
| FR2953938B1 (en) * | 2009-12-14 | 2012-04-13 | Sagem Comm | METHOD FOR OPENING OR CLOSING AN ELECTRICAL CIRCUIT AT AN ELECTRIC COUNTER |
| US8736193B2 (en) | 2011-12-22 | 2014-05-27 | Leviton Manufacturing Company, Inc. | Threshold-based zero-crossing detection in an electrical dimmer |
| US8664886B2 (en) | 2011-12-22 | 2014-03-04 | Leviton Manufacturing Company, Inc. | Timer-based switching circuit synchronization in an electrical dimmer |
| WO2014015908A1 (en) * | 2012-07-26 | 2014-01-30 | Siemens Aktiengesellschaft | Electrical switching device |
| US9934923B2 (en) * | 2013-12-13 | 2018-04-03 | Te Connectivity Corporation | Relay with integral phase controlled switching |
| US9681526B2 (en) | 2014-06-11 | 2017-06-13 | Leviton Manufacturing Co., Inc. | Power efficient line synchronized dimmer |
| FR3031232B1 (en) * | 2014-12-31 | 2018-02-09 | Groupe Brandt | DEVICE AND METHOD FOR CONTROLLING AN ELECTROMECHANICAL RELAY |
| ES2554564B1 (en) * | 2015-04-01 | 2016-10-27 | Simon, S.A. | Relay and relay control method |
| JP2019187001A (en) * | 2018-04-04 | 2019-10-24 | 三菱重工サーマルシステムズ株式会社 | Inrush current suppression circuit control device, voltage conversion system, inrush current suppression circuit control method and program |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2069762A (en) * | 1980-02-14 | 1981-08-26 | Lyons Claude Ltd | Arrangement for controlling the operation of switch contacts |
| DE3110314A1 (en) * | 1980-07-31 | 1982-04-01 | LGZ Landis & Gyr Zug AG, 6301 Zug | System and device for operating an electromagnet |
| GB2130436A (en) * | 1982-10-23 | 1984-05-31 | Hawker Siddeley Revenue Contr | Zero crossing circuit for arcing preventing in circuit breakers |
-
1989
- 1989-03-06 NO NO890930A patent/NO167424C/en unknown
-
1990
- 1990-03-02 AU AU51787/90A patent/AU5178790A/en not_active Abandoned
- 1990-03-02 WO PCT/NO1990/000044 patent/WO1990010942A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO1990010942A1 (en) | 1990-09-20 |
| NO167424C (en) | 1991-10-30 |
| AU5178790A (en) | 1990-10-09 |
| NO890930L (en) | 1990-09-07 |
| NO890930D0 (en) | 1989-03-06 |
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