EP0629104B1 - Circuit for limiting the DC crest current and/or the inrush current after the ignition of a discharge lamp - Google Patents
Circuit for limiting the DC crest current and/or the inrush current after the ignition of a discharge lamp Download PDFInfo
- Publication number
- EP0629104B1 EP0629104B1 EP94107985A EP94107985A EP0629104B1 EP 0629104 B1 EP0629104 B1 EP 0629104B1 EP 94107985 A EP94107985 A EP 94107985A EP 94107985 A EP94107985 A EP 94107985A EP 0629104 B1 EP0629104 B1 EP 0629104B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- arrangement according
- switching
- choke
- circuitry arrangement
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
- H05B41/18—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having a starting switch
-
- 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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/02—Details
- H05B41/04—Starting switches
- H05B41/042—Starting switches using semiconductor devices
- H05B41/044—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes
Definitions
- the invention relates to a circuit arrangement for limiting the DC peak value and the starting alternating current after switching on one Discharge lamp according to the preamble of claim 1.
- a corresponding circuit arrangement is, for example, from FR-A-2 383 576 known.
- This document describes an ignition arrangement for gas discharge lamps, where a current limiting choke in series with a series resistor to one igniting gas discharge lamp is connected. There is also a capacitor present, which together with the choke a series resonance circuit for igniting the Gas discharge lamp forms.
- this series resistor has no impedance, i.e. he is not present at all, while according to the other case the series resistor is one has an impedance comparable to the impedance of the inductor, which clearly leads to a leads to softer ignition of the gas discharge lamp.
- the ignition or. Ballasts for discharge lamps operated with alternating current usually contain a choke to limit the current.
- the choke has a relatively high direct current a negligible superimposed AC component flows.
- This has in Extreme case that the operating point of the throttle up to Saturation range shifts. That means the throttle, which is only one very much anyway has low DC resistance, in this case also a low one AC resistance. This in turn has a very high one DC peak value, which adversely affects the life of the lamps can impact.
- the case described above applies in particular to High pressure discharge lamps.
- the invention has for its object a circuit arrangement of the beginning described type that allows a throttle with lower Dimensions to use.
- the throttle additional current limiting circuit part available which after switching on the AC power source passes a more limited current in a first state and after a certain time switches to a second state in which it passes a less limited current.
- the current limiting circuit part thus relieves the on-phase Current limiting function of the choke with the result that the latter is dimensioned smaller can be.
- Switching the current limiting circuit part from the one state to the second state can either by taking advantage of the in the start-up phase on a the components of the ballast. Ignitor occurring by or a timing device. Refinements of those specified in claim 1 basic solution to the problem specified in subclaims 2 to 13.
- a high-pressure discharge lamp HL is connected to an ignition device ZG AC power source U connected.
- the ignitor ZG contains one for Current-limiting choke L is another one connected in series with the latter Current limiting part B.
- the high-pressure discharge lamp acts at first like a rectifier, i.e. through the lamp flows a direct current superimposed with an alternating current component.
- the throttle L practically not only forms a significant DC resistance, but it will through the direct current flowing through it also into saturation driven, which also reduces their AC resistance when they are not is appropriately large.
- the throttle is on Current limiting circuit part B connected in series, which not only in the start-up phase the starting alternating current, but also the DC peak value. After Expiration of a certain time, within which the rectifying effect of the high-pressure discharge lamp subsides, the current limiting circuit part B then switches from that first state into a second state, in which it flows through Electricity less limited. Since the current is now significantly lower DC component has an effective current limitation in this case by Throttle L.
- a low pressure gas discharge lamp NL is on via a ballast VG an AC power source U connected. Is parallel to the gas discharge lamp NL an ignition starter Z. After closing the ignition starter Z, one occurs at this Glow discharge, causing it to warm up and close. After closing the Ignition starter Z is practically the full line voltage U at the ballast VG, since the Heating coils of the gas discharge lamp NL are still cold and have a low resistance to have. This leads to a high starting alternating current through the ballast VG.
- the ballast VG contains the usual choke L as well as one with the choke in series switched current limiting part B.
- the current limiting part B switches as in Described in connection with Figure 1, after a certain time of one first state, in which it limits the current flowing through, into one second state, in which there is less flow through the current limited.
- the throttle L can therefore be smaller be dimensioned as without power supply circuit part B.
- the current limiting circuit part consists of a series resistor RV and a temperature-sensitive switch S connected in parallel with it
- Switch S can be, for example, a bimetal switch that opens when cold and closes when heated.
- the arrangement is chosen so that in the Series resistor RV generated by the current flowing through the heat Switch S is transmitted.
- the inductor L can also be in thermal contact be with the switch S.
- the current limiting part according to FIG. 4 still contains a series resistor RH, which is in series with the series resistor RV and parallel to the Throttle L is switched.
- the series resistor RH is also in thermal contact with the switch S.
- the heating resistor RH is different from the embodiment according to 4 parallel to the series circuit comprising the series resistor RV and the inductor L. switched.
- the heating resistor RH serves the same purpose here as in In connection with Figure 4 has been described.
- the current limiting circuit part B for switching the Switch from the first state to the second state a control circuit ST.
- the Switching does not take place here due to heat development on one of the elements, but by the fact that the control circuit switches after a triggers a certain period of time.
Abstract
Description
Die Erfindung betrifft eine Schaltungsanordnung zur Begrenzung des Gleichstromscheitelwertes und des Anlaufwechselstromes nach dem Einschalten einer Entladungslampe gemäß dem Oberbegriff des Anspruches 1.The invention relates to a circuit arrangement for limiting the DC peak value and the starting alternating current after switching on one Discharge lamp according to the preamble of claim 1.
Eine entsprechende Schaltungsanordnung ist beispielsweise aus der FR-A-2 383 576 bekannt. Diese Druckschrift beschreibt eine Zündanordnung für Gasentladungslampen, wobei eine Strombegrenzungsdrossel in Serie mit einem Vorwiderstand an eine zu zündende Gasentladungslampe angeschlossen ist. Des weiteren ist ein Kondensator vorhanden, der zusammen mit der Drossel einen Serienresonanzkreis zum Zünden der Gasentladungslampe bildet. In dieser Druckschrift wird insbesondere die Auswirkung dieses Vorwiderstands beschrieben, wobei zwei unterschiedliche Fälle verglichen werden. Gemäß dem einen Fall besitzt der Vorwiderstand keine Impendanz, d.h. er ist überhaupt nicht vorhanden, während gemäß dem anderen Fall der Vorwiderstand eine zu der Impendanz der Drossel vergleichbare Impendanz aufweist, was zu einem deutlich weicheren Zündvorgang der Gasentladungslampe führt.A corresponding circuit arrangement is, for example, from FR-A-2 383 576 known. This document describes an ignition arrangement for gas discharge lamps, where a current limiting choke in series with a series resistor to one igniting gas discharge lamp is connected. There is also a capacitor present, which together with the choke a series resonance circuit for igniting the Gas discharge lamp forms. In this publication, the impact in particular described this series resistor, comparing two different cases become. In one case, the series resistor has no impedance, i.e. he is not present at all, while according to the other case the series resistor is one has an impedance comparable to the impedance of the inductor, which clearly leads to a leads to softer ignition of the gas discharge lamp.
Die Zünd-bzw. Vorschaltgeräte für mit Wechselstrom betriebenen Entladungslampen enthalten in der Regel eine Drossel zur Strombegrenzung. Beim Einschalten der Entladungslampen wirken diese im ersten Augenblick nach der Zündung nahezu wie Gleichrichter. Das bedeutet, daß durch die Drossel ein relativ hoher Gleichstrom mit einer vernachlässigbaren überlagerten Wechselstromkomponente fließt. Dies hat im Extremfall zur Folge, daß sich der Arbeitspunkt der Drossel bis in den Sättigungsbereich verschiebt. Das bedeutet, daß die Drossel, die ohnehin nur einen sehr geringen Gleichstromwiderstand hat, in diesem Fall auch einen geringen Wechselstromwiderstand darstellt. Dies wiederum hat einen sehr hohen Gleichstromscheitelwert zur Folge, der sich nachteilig auf die Lebensdauer der Lampen auswirken kann. Der vorstehend beschriebene Fall gilt insbesondere für Hochdruckentladungslampen.The ignition or. Ballasts for discharge lamps operated with alternating current usually contain a choke to limit the current. When you turn on the Discharge lamps look almost like they do at first Rectifier. This means that the choke has a relatively high direct current a negligible superimposed AC component flows. This has in Extreme case that the operating point of the throttle up to Saturation range shifts. That means the throttle, which is only one very much anyway has low DC resistance, in this case also a low one AC resistance. This in turn has a very high one DC peak value, which adversely affects the life of the lamps can impact. The case described above applies in particular to High pressure discharge lamps.
Ein weiteres Problem tritt bei mit Wechselstrom betriebenen Gasentladungslampen auf, wenn diese mit einem Starter gezündet werden. Der parallel zu der Entladungslampe liegende Starter wird für die Zündung der Gasentladungslampe kurzzeitig geschlossen, wodurch an der in Serie mit der Gasentladungslampe liegenden Drossel die volle Versorgungs-Wechelspannung (Netzspannung) anliegt. Die Drossel muß dementsprechend auf diese volle Belastung ausgelegt werden.Another problem occurs with gas discharge lamps operated with alternating current, if these are ignited with a starter. The parallel to the discharge lamp lying starter is briefly closed for the ignition of the gas discharge lamp, which means that the choke in series with the gas discharge lamp is fully charged AC supply voltage (mains voltage) is present. The throttle must be designed accordingly for this full load.
Der Erfindung liegt die Aufgabe zugrunde, eine Schaltungsanordnung der eingangs beschriebenen Art zu schaffen, die es erlaubt, eine Drossel mit geringeren Abmessungen zu verwenden.The invention has for its object a circuit arrangement of the beginning described type that allows a throttle with lower Dimensions to use.
Diese Aufgabe wird erfindungsgemäß durch eine Schaltungsanordnung mit den Merkmalen der Anspruches 1 gelöst.This object is achieved by a circuit arrangement solved with the features of claim 1.
Erfindungsgemäß ist ein mit der Drossel in Serie geschaltetes weiteres Strombegrenzungsschaltungsteil vorhanden, das nach dem Einschalten der WechselstromVersorgungsquelle in einem ersten Zustand einen stärker begrenzten Strom durchläßt und nach Ablauf einer bestimmten Zeit in einen zweiten Zustand umschaltet, in dem es einen weniger stark begrenzten Strom durchläßt. According to the invention is connected in series with the throttle additional current limiting circuit part available, which after switching on the AC power source passes a more limited current in a first state and after a certain time switches to a second state in which it passes a less limited current.
Das Strombegrenzungsschaltungsteil wirkt also in der Einschaltphase entlastend für die Strombegrenzungsfunktion der Drossel mit der Folge, daß letztere kleiner dimensioniert werden kann.The current limiting circuit part thus relieves the on-phase Current limiting function of the choke with the result that the latter is dimensioned smaller can be.
Das Umschalten des Strombegrenzungsschaltungsteils von dem einen Zustand in den zweiten Zustand kann entweder durch Ausnutzung der in der Einschaltphase an einem der Bauelemente des Vorschalt-bzw. Zündgerätes auftretenden Erwärmung oder durch eine Zeitsteuereinrichtung erfolgen. Ausgestaltungen der im Anspruch 1 angegebenen grundsätzlichen Lösung der Aufgabe in den Unteransprüchen 2 bis 13 angegeben.Switching the current limiting circuit part from the one state to the second state can either by taking advantage of the in the start-up phase on a the components of the ballast. Ignitor occurring by or a timing device. Refinements of those specified in claim 1 basic solution to the problem specified in subclaims 2 to 13.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen beschrieben.Embodiments of the invention are described below with reference to the drawings described.
Es zeigen:
Gemäß Figur 1 ist eine Hochdruck-Entladungslampe HL über ein Zündgerät ZG an eine Wechselstromquelle U angeschlossen. Das Zündgerät ZG enthält neben einer zur Strombegrenzung dienenden Drossel L ein mit letzterer in Serie geschaltetes weiteres Strombegrenzungsteil B. Wenn die Wechselstromquelle U an das Zündgerät G und die Hochdruck-Entladunglampe HL angeschaltet wird, wirkt die Hochdruck-Entladungslampe im ersten Augenblick wie ein Gleichrichter, d.h. durch die Lampe fließt ein mit einer Wechselstromkomponente überlagerter Gleichstrom. Die Drossel L bildet praktisch nicht nur einen nennenswerten Gleichstromwiderstand, sondern sie wird durch den durch sie hindurchfließenden Gleichstrom außerdem in die Sättigung gefahren, wodurch auch ihr Wechselstromwiderstand verringert wird, wenn sie nicht entsprechend groß dimensioniert ist. Um letzteres zu vermeiden, ist mit der Drossel ein Strombegrenzungsschaltungsteil B in Serie geschaltet, das in der Anlaufphase nicht nur den Anlaufwechselstrom, sondern auch den Gleichstromscheitelwert begrenzt. Nach Ablauf einer bestimmten Zeit, innerhalb der die Gleichrichterwirkung der Hochdruck-Entladungslampe abklingt, schaltet der Strombegrenzungsschaltungsteil B dann von dem ersten Zustand in einen zweiten Zustand um, in welchem er den hindurchfließenden Strom weniger stark begrenzt. Da der Strom nunmehr einen erheblich geringeren Gleichstromanteil hat, erfolgt eine wirksame Strombegrenzung in diesem Fall durch die Drossel L.According to FIG. 1, a high-pressure discharge lamp HL is connected to an ignition device ZG AC power source U connected. The ignitor ZG contains one for Current-limiting choke L is another one connected in series with the latter Current limiting part B. When the AC source U to the ignitor G and the High-pressure discharge lamp HL is switched on, the high-pressure discharge lamp acts at first like a rectifier, i.e. through the lamp flows a direct current superimposed with an alternating current component. The throttle L practically not only forms a significant DC resistance, but it will through the direct current flowing through it also into saturation driven, which also reduces their AC resistance when they are not is appropriately large. To avoid the latter, the throttle is on Current limiting circuit part B connected in series, which not only in the start-up phase the starting alternating current, but also the DC peak value. After Expiration of a certain time, within which the rectifying effect of the high-pressure discharge lamp subsides, the current limiting circuit part B then switches from that first state into a second state, in which it flows through Electricity less limited. Since the current is now significantly lower DC component has an effective current limitation in this case by Throttle L.
In Figur 2 ist eine Niederdruck-Gasentladungslampe NL über ein Vorschaltgerät VG an eine Wechselstromquelle U angeschlossen. Parallel zu der Gasentladungslampe NL liegt ein Zündstarter Z. Nach dem Schließen des Zündstarters Z tritt an diesem eine Glimmentladung auf, wodurch er sich erwärmt und schließt. Nach dem Schließen des Zündstarters Z liegt praktisch die volle Netzspannung U am Vorschaltgerät VG, da die Heizwendeln der Gasentladungslampe NL noch kalt sind und einen geringen Widerstand haben. Dies führt zu einem hohen Anlaufwechselstrom durch das Vorschaltgerät VG. Das Vorschaltgerät VG enthält die übliche Drossel L sowie ein mit der Drossel in Serie geschaltetes Strombegrenzungsteil B. Das Strombegrenzungsteil B schaltet, wie in Zusammenhang mit Figur 1 beschrieben, nach Ablauf einer bestimmten Zeit von einem ersten Zustand, in welchem es den hindurchfließenden Strom stärker begrenzt, in einen zweiten Zustand um, in welchem es den hindurchfließenden Strom weniger stark begrenzt. Innerhalb dieser Zeit haben sich die Heizwendeln der Gasentladungslampe NL erwärmt, wodurch ihr Widerstand höher ist, mit der Folge, daß nicht mehr die volle Wechselspannung U an dem Vorschaltgerät liegt. Die Drossel L kann daher kleiner dimensioniert werden als ohne Stromversorgungsschaltungsteil B. Der Vollständigkeit halber sei noch erwähnt, daß der Zündstarter Z nach dem Schließen abkühlt und schließlich wieder öffnet, wodurch im Zusammenwirken mit der Drossel L ein hoher Zündimpuls erzeugt wird, der zum Zünden der Gasentladungslampe NL führt. Nach dem Zünden befindet sich die Anordnung im Betriebszustand, und es fließt ein Gasentladungsstrom durch die Lampe. Der Zündstarter Z bleibt nach dem Zünden geöffnet, da keine weitere Glimmentladung an ihm auftritt.In Figure 2, a low pressure gas discharge lamp NL is on via a ballast VG an AC power source U connected. Is parallel to the gas discharge lamp NL an ignition starter Z. After closing the ignition starter Z, one occurs at this Glow discharge, causing it to warm up and close. After closing the Ignition starter Z is practically the full line voltage U at the ballast VG, since the Heating coils of the gas discharge lamp NL are still cold and have a low resistance to have. This leads to a high starting alternating current through the ballast VG. The ballast VG contains the usual choke L as well as one with the choke in series switched current limiting part B. The current limiting part B switches as in Described in connection with Figure 1, after a certain time of one first state, in which it limits the current flowing through, into one second state, in which there is less flow through the current limited. During this time, the heating filaments of the NL gas discharge lamp warmed, whereby their resistance is higher, with the result that the full is no longer AC voltage U is on the ballast. The throttle L can therefore be smaller be dimensioned as without power supply circuit part B. Completeness half of it should be mentioned that the ignition starter Z cools after closing and finally opens again, which in cooperation with the throttle L a high Ignition pulse is generated, which leads to the ignition of the gas discharge lamp NL. After the ignition is in the operating state, and it flows Gas discharge current through the lamp. The ignition starter Z remains after ignition open because there is no further glow discharge on it.
Gemäß Figur 3 besteht der Strombegrenzungsschaltungsteil aus einem Vorwiderstand RV und einem zu diesem parallel geschalteten temperaturempfindlichen Schalter S. Der Schalter S kann beispielsweise ein Bimetallschalter sein, der im kalten Zustand geöffnet ist und bei Erwärmung schließt. Die Anordnung ist so gewählt, daß in dem Vorwiderstand RV durch den hindurchfließenden Strom erzeugte Wärme auf den Schalter S übertragen wird. Zusätzlich kann auch die Drossel L in Wärmeleitkontakt mit dem Schalter S sein. Nach dem Einschalten fließt Strom durch die Serienschaltung aus dem Vorwiderstand RV und der Drossel L. Der durch die Serienschaltung dieser beiden Elemente fließende Strom wird also sowohl durch die Drossel L als auch durch den Vorwiderstand RV begrenzt. Nach Ablauf einer gewissen Zeit erwärmen sich die beiden Elemente mit der Folge, daß der Schalter S schließt und den Vorwiderstand RV kuzschließt. Der Strom fließt dann nur noch durch die Drossel L, die die alleinige Strombegrenzungsfunktion übernimmt.According to Figure 3, the current limiting circuit part consists of a series resistor RV and a temperature-sensitive switch S connected in parallel with it Switch S can be, for example, a bimetal switch that opens when cold and closes when heated. The arrangement is chosen so that in the Series resistor RV generated by the current flowing through the heat Switch S is transmitted. In addition, the inductor L can also be in thermal contact be with the switch S. After switching on, current flows through the series connection from the series resistor RV and the inductor L. The through the series connection of this current flowing through both elements is thus both through the choke L and through the series resistor RV limited. After a certain period of time, they warm up two elements with the result that the switch S closes and the series resistor RV close. The current then only flows through the choke L, which is the only one Current limiting function takes over.
Der Strombegrenzungsteil gemäß Figur 4 enthält gegenüber derjenigen in Figur 3 noch einen Reihenwiderstand RH, der in Serie zu dem Vorwiderstand RV und parallel zu der Drossel L geschaltet ist. Auch der Reihenwiderstand RH ist in Wärmeleitkontakt mit dem Schalter S. Wenn der Schalter S von dem ersten Zustand, in welchem er geöffnet ist, nach Erwärmung der Elemente L, RV und RH in den zweiten Zustand umschaltet, in welchem er geschlossen ist, fließt Strom nur noch durch die Parallelschaltung der Drossel L und dem Heizwiderstand RH. Der Zweck des Heizwiderstandes RH ist der, genügend Wärme zu erzeugen, um den Schalter S geschlossen zu halten, falls die von der Drossel L im normalen Betriebszustand erzeugte Wärme dazu nicht ausreichen sollte.Compared to that in FIG. 3, the current limiting part according to FIG. 4 still contains a series resistor RH, which is in series with the series resistor RV and parallel to the Throttle L is switched. The series resistor RH is also in thermal contact with the switch S. When the switch S from the first state in which it opened is switched to the second state after heating the elements L, RV and RH, in which it is closed, current only flows through the parallel connection of the Choke L and the heating resistor RH. The purpose of the heating resistor RH is generate enough heat to keep switch S closed if that of the throttle L heat generated in the normal operating state is not sufficient for this should.
In Figur 5 ist der Heizwiderstand RH abweichend von der Ausführungsform gemäß Figur 4 parallel zu der Serienschaltung aus dem Vorwiderstand RV und der Drossel L geschaltet. Der Heizwiderstand RH dient hier dem gleichen Zweck, wie er im Zusammenhang mit Figur 4 beschrieben wurde.In Figure 5, the heating resistor RH is different from the embodiment according to 4 parallel to the series circuit comprising the series resistor RV and the inductor L. switched. The heating resistor RH serves the same purpose here as in In connection with Figure 4 has been described.
Gemäß Figur 5 enthält der Strombegrenzungsschaltungsteil B zum Umschalten des Schalters von dem ersten Zustand in den zweiten Zustand eine Steuerschaltung ST. Die Umschaltung erfolgt hier nicht durch Wärmeentwicklung an einem der Elemente, sondern dadurch, daß die Steuerschaltung die Umschaltung nach Ablauf einer bestimmten Zeitspanne auslöst.According to Figure 5, the current limiting circuit part B for switching the Switch from the first state to the second state, a control circuit ST. The Switching does not take place here due to heat development on one of the elements, but by the fact that the control circuit switches after a triggers a certain period of time.
Ergänzend sei darauf hingewiesen, daß der Ohm'sche Widerstand RV in den einzelnen Ausführungsbeispielen selbstverständlich auch durch eine beliebige äquivalente Impedanz ersetzt werden kann.In addition, it should be noted that the ohmic resistance RV in the individual Embodiments of course also by any equivalent Impedance can be replaced.
Claims (13)
- Circuitry arrangement for limiting the d.c. current peak value and/or the startup a.c. current upon switching on of a gas discharge lamp (HL; NL) which can be connected to an a.c. current supply source (U), having a choke (L) serving for current limiting and a further current limiting circuit part (B) connected in series with the choke (L),
characterised in that,
upon the switching on, the further current limiting circuit part (B) in a first state allows a more strongly limited current to pass and after expiry of a certain time switches into a second state in which it allow a less strongly limited current to pass. - Circuitry arrangement according to claim 1,
characterised in that,
the further current limiting circuit part (B) includes an upstream resistance (RV). - Circuitry arrangement according to claim 2,
characterised in that,
there is arranged parallel to the upstream resistance (RV) a switching device (S) which is open in the first state of the current limiting circuit part (B) and is closed in the second state. - Circuitry arrangement according to any preceding claim,
characterised in that,
the switching arrangement (S) is temperature sensitive. - Circuitry arrangement according to claim 4,
characterised in that,
the temperature sensitive switching arrangement (S) is a bimetallic switch. - Circuitry arrangement according to claim 4 or 5,
characterised in that,
the upstream resistance (RV) is a heater resistance which, due to its heat development, closes the initially open switching arrangement (S). - Circuitry arrangement according to any of claims 4 to 6,
characterised in that,
the choke (L) is so thermally coupled with the switching arrangement (S) that the choke (L), due to its heat development, closes and/or holds in the closed condition the initially open switching arrangement (S). - Circuitry arrangement according to any of claims 4 to 7,
characterised in that,
an additional heating arrangement is provided which, due to its heat development, closes and/or holds closed the initially open switching arrangement (S). - Circuitry arrangement according to claim 8,
characterised in that,
the additional heating arrangement includes a heating resistance (RH). - Circuitry arrangement according to claim 9,
characterised in that,
the additional heating resistance (RH) is connected parallel to the choke (L). - Circuitry arrangement according to claim 9,
characterised in that,
the additional heating resistance (RH) is connected parallel to the series circuit of the upstream resistance (RV) and the choke (L). - Circuitry arrangement according to claim 3,
characterised in that,
a control arrangement (ST) is provided for controlling the switching arrangement (S). - Circuitry arrangement according to claim 12,
characterised in that,
the control arrangement (ST) closes the initially open switching arrangement (S) after expiry of a certain time.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4319501 | 1993-06-11 | ||
| DE4319501 | 1993-06-11 | ||
| DE4404658 | 1994-02-14 | ||
| DE4404658A DE4404658A1 (en) | 1993-06-11 | 1994-02-14 | Circuit arrangement for limiting the DC peak value and / or the starting AC current after switching on a discharge lamp |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0629104A2 EP0629104A2 (en) | 1994-12-14 |
| EP0629104A3 EP0629104A3 (en) | 1995-08-02 |
| EP0629104B1 true EP0629104B1 (en) | 1999-12-15 |
Family
ID=25926712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94107985A Expired - Lifetime EP0629104B1 (en) | 1993-06-11 | 1994-05-24 | Circuit for limiting the DC crest current and/or the inrush current after the ignition of a discharge lamp |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0629104B1 (en) |
| AT (1) | ATE187863T1 (en) |
| DE (2) | DE4404658A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19515592A1 (en) * | 1995-05-02 | 1996-11-07 | Walter Holzer | Soft-start gas-discharge lamp |
| AT12721U1 (en) * | 2011-04-22 | 2012-10-15 | Tridonic Gmbh & Co Kg | DEVICE FOR OPERATING A HIGH-PRESSURE DISCHARGE LAMP |
| DE102011055664A1 (en) | 2011-11-24 | 2013-05-29 | Vossloh-Schwabe Deutschland Gmbh | Direct current voltage supply device for supplying direct current to e.g. incandescent lamp, has starting current limiter circuit connected in series with capacitor and series circuit and parallel to load and direct current voltage source |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1589205C3 (en) * | 1967-09-19 | 1974-11-21 | Fritz Ennenda Glarus Knobel (Schweiz) | Circuit arrangement for the capacitive operation of low-voltage fluorescent lamps |
| DE2451786A1 (en) * | 1974-10-31 | 1976-05-06 | Bosch Gmbh Robert | Supply circuit for fluorescent lamps - has extra capacitor and PTC resistor to compensate series inductors pause shift and increase life |
| US3996495A (en) * | 1975-07-25 | 1976-12-07 | North American Philips Corporation | High efficiency ballast system for electric discharge lamps |
| DE2710066A1 (en) * | 1977-03-08 | 1978-09-14 | Helmut Dipl Chem Ulrich | FLUORESCENT LAMP STARTING AND FEEDING |
| JPS6019637B2 (en) * | 1981-12-29 | 1985-05-17 | 松下電工株式会社 | discharge lamp starting device |
| DE3911758A1 (en) * | 1988-09-06 | 1990-03-15 | Stefan Tupi | Discharge lamp operating circuit - with fuse provided by temp. monitor for choke coil using bimetallic disc to operate cut-out switch |
| DE3912457A1 (en) * | 1989-04-15 | 1990-10-18 | Erzmoneit Dorit | Fluorescent lamps LP discharge arranged in circuit - has lamps power matched across current dependent variable resistances and switching elements to give energy saving of about thirty per cent |
| DE9015674U1 (en) * | 1990-11-15 | 1992-03-12 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De |
-
1994
- 1994-02-14 DE DE4404658A patent/DE4404658A1/en not_active Withdrawn
- 1994-05-24 EP EP94107985A patent/EP0629104B1/en not_active Expired - Lifetime
- 1994-05-24 AT AT94107985T patent/ATE187863T1/en not_active IP Right Cessation
- 1994-05-24 DE DE59409000T patent/DE59409000D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59409000D1 (en) | 2000-01-20 |
| ATE187863T1 (en) | 2000-01-15 |
| EP0629104A3 (en) | 1995-08-02 |
| DE4404658A1 (en) | 1994-12-15 |
| EP0629104A2 (en) | 1994-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0185179B1 (en) | Starting circuit for low-pressure discharge lamps | |
| EP0800335B1 (en) | Circuit for operating electric lamps | |
| DE2116950C3 (en) | Circuit arrangement for igniting and operating gas discharge lamps | |
| EP0471332A1 (en) | Circuit assembly for operating a fluorescent lamp | |
| EP0054301B1 (en) | Lighting circuit for a low-pressure discharge lamp | |
| EP0629104B1 (en) | Circuit for limiting the DC crest current and/or the inrush current after the ignition of a discharge lamp | |
| DE4100349C2 (en) | Electronic ballast | |
| DE10252836A1 (en) | Device for operating discharge lamps | |
| DE3910738A1 (en) | CONTROL UNIT FOR A DIRECTLY HEATED DISCHARGE LAMP | |
| EP0519220A1 (en) | Ballast with controlled heating time | |
| EP0319003A2 (en) | Supply circuit for a low or high pressure discharge lamp, a mercury vapour lamp or the like | |
| DE4216716C1 (en) | Starter circuit for pre-heated gas discharge lamp - uses series choke coil inducing HV pulse for ignition of lamp and logic stage detecting voltage across lamp to detect ignition for controlling heating current | |
| EP2103192B1 (en) | Circuit arrangement and method for starting and operating one or more discharge lamps | |
| EP1280388B1 (en) | Electronic ballast with preheating mode | |
| DE3236852C2 (en) | Starting device for gas discharge lamps with heatable electrodes | |
| AT403870B (en) | IGNITION UNIT FOR COLD START DISCHARGE LAMPS | |
| DE2725532A1 (en) | Fast starter circuit for AC gas discharge lamp - has diode in series with PTC resistor, discharge starter and capacitor all parallel to lamp | |
| DE102004019600B4 (en) | Bridging device for bridging an electrical load | |
| EP1377136A2 (en) | Device for operating discharge lamps | |
| DE4120269C2 (en) | Inverter for igniting and operating a discharge lamp with heated electrodes | |
| DE4406534C2 (en) | Ignitor for cold start discharge lamps | |
| DE4116288C2 (en) | Electronic ballast | |
| DE2242975C3 (en) | Control circuit for oil and gas burners | |
| DE1914211C (en) | Starterless circuit arrangement for the operation of one or more low-voltage fluorescent lamps | |
| DE3912457A1 (en) | Fluorescent lamps LP discharge arranged in circuit - has lamps power matched across current dependent variable resistances and switching elements to give energy saving of about thirty per cent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT CH DE ES FR GB IT LI NL |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT CH DE ES FR GB IT LI NL |
|
| 17P | Request for examination filed |
Effective date: 19951005 |
|
| 17Q | First examination report despatched |
Effective date: 19980529 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE ES FR GB IT LI NL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19991215 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 19991215 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19991215 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19991215 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19991215 |
|
| REF | Corresponds to: |
Ref document number: 187863 Country of ref document: AT Date of ref document: 20000115 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: A. BRAUN, BRAUN, HERITIER, ESCHMANN AG PATENTANWAE |
|
| REF | Corresponds to: |
Ref document number: 59409000 Country of ref document: DE Date of ref document: 20000120 |
|
| EN | Fr: translation not filed | ||
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 19991215 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: TRIDONIC BAUELEMENTE GMBH Free format text: TRIDONIC BAUELEMENTE GMBH#SCHMELZHUETTERSTRASSE 34#6850 DORNBIRN (AT) -TRANSFER TO- TRIDONIC BAUELEMENTE GMBH#SCHMELZHUETTERSTRASSE 34#6850 DORNBIRN (AT) |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20080521 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20080730 Year of fee payment: 15 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090524 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091201 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20120531 Year of fee payment: 19 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130531 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130531 |