EP0629104A2 - 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
- EP0629104A2 EP0629104A2 EP94107985A EP94107985A EP0629104A2 EP 0629104 A2 EP0629104 A2 EP 0629104A2 EP 94107985 A EP94107985 A EP 94107985A EP 94107985 A EP94107985 A EP 94107985A EP 0629104 A2 EP0629104 A2 EP 0629104A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- circuit arrangement
- arrangement according
- state
- switch device
- 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.)
- Granted
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 a discharge lamp according to the preamble of claim 1.
- Ballasts for discharge lamps operated with alternating current generally contain a choke for current limitation.
- the discharge lamps act almost like rectifiers for the first time after ignition. This means that a relatively high direct current flows through the choke with a negligible superimposed alternating current component. In extreme cases, this has the consequence that the operating point of the throttle shifts into the saturation range.
- the choke which has only a very low DC resistance anyway, also represents a low AC resistance in this case. This in turn results in a very high DC peak value, which can adversely affect the life of the lamps.
- the case described above applies in particular to high-pressure discharge lamps.
- the invention has for its object to provide a circuit arrangement of the type described, which allows a choke to be used with smaller dimensions.
- the object is achieved according to the invention by a further current limiting circuit part connected in series with the inductor, which passes a more limited current in a first state after switching on the AC supply source and, after a certain time, switches to a second state in which it is less passes very limited current.
- the current limiting circuit part thus relieves the current limiting function of the choke in the switch-on phase, with the result that the latter can be dimensioned smaller.
- the switchover of the current limiting circuit part from one state to the second state can either be made use of in the switch-on phase on one of the components of the ballast or. Ignitor occurring heating or by a timing device. Refinements of the basic solution to the problem specified in claim 1 are given in subclaims 2 to 13.
- a high-pressure discharge lamp HL is connected to an alternating current source U via an ignition device ZG.
- the igniter ZG contains a further current limiting part B connected in series with the latter.
- a current limiting circuit part B is connected in series with the choke, which not only limits the starting alternating current in the starting phase, but also the direct current peak value. After a certain period of time, within which the rectifying effect of the high-pressure discharge lamp subsides, the current limiting circuit part B then switches from the first state to a second state in which it limits the current flowing through less. Since the current now has a significantly lower DC component, the current is effectively limited in this case by the choke L.
- a low-pressure gas discharge lamp NL is connected to an alternating current source U via a ballast VG.
- An ignition starter Z is located parallel to the gas discharge lamp NL. After the ignition starter Z has been closed, a glow discharge occurs on it, as a result of which it heats up and closes. After the ignition starter Z has been closed, practically the full mains voltage U is at the ballast VG, since the heating filaments of the gas discharge lamp NL are still cold and have a low resistance. This leads to a high starting alternating current through the ballast VG.
- the ballast VG contains the usual choke L and a current limiting part B connected in series with the choke. The current limiting part B switches, as described in connection with FIG.
- the inductor L can therefore be dimensioned smaller than without a power supply circuit part B.
- the ignition starter Z cools down after closing and finally opens again, which in cooperation with the inductor L generates a high ignition pulse which is used to ignite the Gas discharge lamp NL leads. After ignition, the arrangement is in the operating state and a gas discharge current flows through the lamp. The ignition starter Z remains open after ignition, since no further glow discharge occurs on it.
- the current limiting circuit part consists of a series resistor RV and a temperature-sensitive switch S connected in parallel therewith.
- the switch S can be, for example, a bimetallic switch which is open in the cold state and closes when heated.
- the arrangement is chosen such that heat generated by the current flowing through it is transferred to the switch S in the series resistor RV.
- the inductor L can also be in thermal contact with the switch S.
- the current limiting part according to FIG. 4 also contains a series resistor RH, which is connected in series with the series resistor RV and in parallel with the inductor L.
- the series resistor RH is also in thermal contact with the switch S.
- the heating resistor RH is connected in parallel to the series circuit comprising the series resistor RV and the inductor L.
- the heating resistor RH serves the same purpose as that described in connection with FIG. 4.
- the current limiting circuit part B contains a control circuit ST for switching the switch from the first state to the second state.
- the switchover does not take place here due to heat development on one of the elements, but rather in that the control circuit triggers the switchover after a certain period of time.
- ohmic resistance RV can of course also be replaced by any equivalent impedance in the individual exemplary embodiments.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Emergency Protection Circuit Devices (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
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 a discharge lamp according to the preamble of claim 1.
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 generally contain a choke for current limitation. When the discharge lamps are switched on, they act almost like rectifiers for the first time after ignition. This means that a relatively high direct current flows through the choke with a negligible superimposed alternating current component. In extreme cases, this has the consequence that the operating point of the throttle shifts into the saturation range. This means that the choke, which has only a very low DC resistance anyway, also represents a low AC resistance in this case. This in turn results in a very high DC peak value, which can adversely affect the life of the lamps. 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 when these are ignited with a starter. The starter, which is parallel to the discharge lamp, is briefly closed for the ignition of the gas discharge lamp, as a result of which the full supply AC voltage (line voltage) is applied to the choke in series with the gas discharge lamp. The throttle must therefore be designed 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 to provide a circuit arrangement of the type described, which allows a choke to be used with smaller dimensions.
Die Aufgabe ist erfindungsgemäß gelöst durch ein mit der Drossel in Serie geschaltetes weiteres Strombegrenzungsschaltungsteil, das nach dem Einschalten der Wechselstrom-Versorgungsquelle 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.The object is achieved according to the invention by a further current limiting circuit part connected in series with the inductor, which passes a more limited current in a first state after switching on the AC supply source and, after a certain time, switches to a second state in which it is less passes very 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 current limiting function of the choke in the switch-on phase, with the result that the latter can be dimensioned smaller.
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.The switchover of the current limiting circuit part from one state to the second state can either be made use of in the switch-on phase on one of the components of the ballast or. Ignitor occurring heating or by a timing device. Refinements of the basic solution to the problem specified in claim 1 are given 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.
Es zeigen:
- Fig. 1 eine Hochdruck-Entladungslampe mit Zündgerät,
- Fig. 2 eine Niederdruck-Gasentladungslampe mit Vorschaltgerät und Starter,
- Fig. 3 bis 6 verschiedene Ausführungsformen für einen Strombegrenzungsschaltungsteil.
- 1 is a high pressure discharge lamp with ignitor,
- 2 a low-pressure gas discharge lamp with ballast and starter,
- 3 to 6 different embodiments for a current limiting circuit part.
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 fießt 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 HochdruckEntladungslampe 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 alternating current source U via an ignition device ZG. In addition to a choke L serving to limit the current, the igniter ZG contains a further current limiting part B connected in series with the latter. When the alternating current source U is connected to the igniter G and the high-pressure discharge lamp HL, the high-pressure discharge lamp initially acts like a rectifier, ie a direct current superimposed with an alternating current component flows through the lamp. The choke L practically forms not only a significant DC resistance, but is also driven into saturation by the direct current flowing through it, which also reduces its AC resistance if it is not dimensioned accordingly large. In order to avoid the latter, a current limiting circuit part B is connected in series with the choke, which not only limits the starting alternating current in the starting phase, but also the direct current peak value. After a certain period of time, within which the rectifying effect of the high-pressure discharge lamp subsides, the current limiting circuit part B then switches from the first state to a second state in which it limits the current flowing through less. Since the current now has a significantly lower DC component, the current is effectively limited in this case by the choke 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 enthalt 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 FIG. 2, a low-pressure gas discharge lamp NL is connected to an alternating current source U via a ballast VG. An ignition starter Z is located parallel to the gas discharge lamp NL. After the ignition starter Z has been closed, a glow discharge occurs on it, as a result of which it heats up and closes. After the ignition starter Z has been closed, practically the full mains voltage U is at the ballast VG, since the heating filaments of the gas discharge lamp NL are still cold and have a low resistance. This leads to a high starting alternating current through the ballast VG. The ballast VG contains the usual choke L and a current limiting part B connected in series with the choke. The current limiting part B switches, as described in connection with FIG. 1, after a certain time from a first state in which it limits the current flowing through it more , into a second state in which it limits the current flowing through less. During this time, the heating filaments of the gas discharge lamp NL have warmed up, as a result of which their resistance is higher, with the result that the full alternating voltage U is no longer applied to the ballast. The inductor L can therefore be dimensioned smaller than without a power supply circuit part B. For the sake of completeness, it should also be mentioned that the ignition starter Z cools down after closing and finally opens again, which in cooperation with the inductor L generates a high ignition pulse which is used to ignite the Gas discharge lamp NL leads. After ignition, the arrangement is in the operating state and a gas discharge current flows through the lamp. The ignition starter Z remains open after ignition, since no further glow discharge occurs 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 Warme 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 FIG. 3, the current limiting circuit part consists of a series resistor RV and a temperature-sensitive switch S connected in parallel therewith. The switch S can be, for example, a bimetallic switch which is open in the cold state and closes when heated. The arrangement is chosen such that heat generated by the current flowing through it is transferred to the switch S in the series resistor RV. In addition, the inductor L can also be in thermal contact with the switch S. After switching on, current flows through the series circuit from the series resistor RV and the inductor L. The through the series circuit of these current flowing through both elements is thus limited both by the inductor L and by the series resistor RV. After a certain time, the two elements heat up with the result that the switch S closes and the series resistor RV closes. The current then only flows through the choke L, which takes over the sole current limiting function.
Der Strombegrenzungsteil gemäß Figur 4 enthalt 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 also contains a series resistor RH, which is connected in series with the series resistor RV and in parallel with the inductor L. The series resistor RH is also in thermal contact with the switch S. When the switch S switches from the first state in which it is open after heating the elements L, RV and RH to the second state in which it is closed, current flows only through the parallel connection of the choke L and the heating resistor RH. The purpose of the heating resistor RH is to generate enough heat to keep the switch S closed if the heat generated by the choke L in the normal operating state should not be sufficient for this.
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 FIG. 5, in contrast to the embodiment according to FIG. 4, the heating resistor RH is connected in parallel to the series circuit comprising the series resistor RV and the inductor L. The heating resistor RH serves the same purpose as that described in connection with FIG. 4.
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 FIG. 5, the current limiting circuit part B contains a control circuit ST for switching the switch from the first state to the second state. The switchover does not take place here due to heat development on one of the elements, but rather in that the control circuit triggers the switchover after 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 can of course also be replaced by any equivalent impedance in the individual exemplary embodiments.
Claims (13)
gekennzeichnet durch
ein mit der Drossel (D) in Serie geschaltetes weiteres Strombegrenzungsschaltungsteil (B) das nach dem Einschalten in einem ersten Zustand einen stärker begrenzten Strom durchläßt und nach Ablauf einer bestimmten Zeit in einen zweiten Zustand umschaltet, in welchem es einen weniger stark begrenzten Strom durchläßt.Circuit arrangement for limiting the direct current peak value and / or the starting alternating current after switching on a discharge lamp (HL; NL), which can be connected to an alternating current supply source (U), with a choke (D) serving to limit the current,
marked by
a further current limiting circuit part (B) connected in series with the inductor (D) which, after being switched on, passes a more limited current in a first state and, after a certain time, switches into a second state in which it passes a less limited current.
dadurch gekennzeichnet,
daß das weitere Strombegrenzungsschaltungsteil (B) einen Vorwiderstand (RV) umfaßt.Circuit arrangement according to claim 1,
characterized,
that the further current limiting circuit part (B) comprises a series resistor (RV).
dadurch gekennzeichnet,
daß parallel zu dem Vorwiderstand (RV) eine Schaltereinrichtung (S) angeordnet ist, die in dem ersten Zustand des Strombegrenzungsschaltungsteils (B) geöffnet und in dem zweiten Zustand geschlossen ist.Circuit arrangement according to claim 2,
characterized,
that a switch device (S) is arranged in parallel with the series resistor (RV) and is open in the first state of the current limiting circuit part (B) and closed in the second state.
dadurch gekennzeichnet,
daß die Schaltereinrichtung (S) temperaturempfindlich ist.Circuit arrangement according to one of the preceding claims
characterized,
that the switch device (S) is temperature sensitive.
dadurch gekennzeichnet,
daß die temperaturempfindliche Schaltereinrichtung (S) ein Bimetallschalter ist.Circuit arrangement according to claim 4,
characterized,
that the temperature sensitive switch device (S) is a bimetal switch.
dadurch gekennzeichnet,
daß der Vorwiderstand (RV) ein Heizwiderstand ist, der aufgrund seiner Wärmeentwicklung die zunächst offene Schaltereinrichtung (S) schließt.Circuit arrangement according to claim 4 or 5,
characterized,
that the series resistor (RV) is a heating resistor which closes the initially open switch device (S) due to its heat development.
dadurch gekennzeichnet,
daß die Drossel (L) in der Schaltereinrichung (S) thermisch derart gekoppelt ist, daß die Drossel (L) aufgrund ihrer Wärmeentwicklung die zunächst offene Schaltereinrichtung (S) schließt und/oder im geschlossenen Zustand hält.Circuit arrangement according to one of claims 4 to 6,
characterized,
that the throttle (L) in the switch device (S) is thermally coupled such that the throttle (L) closes the initially open switch device (S) due to its heat development and / or keeps it in the closed state.
dadurch gekennzeichnet,
daß eine zusätzliche Heizeinrichtung vorgesehen ist, die die zunächst offene Schaltereinrichtung (S) aufgrund ihrer Wärmeentwicklung schließt und/oder geschlossen hält.Circuit arrangement according to one of claims 4 to 7,
characterized,
that an additional heating device is provided which closes and / or keeps the initially open switch device (S) due to its heat development.
dadurch gekennzeichnet,
daß die zusätzliche Heizeinrichtung einen Heizwiderstand (RH) umfaßt.Circuit arrangement according to claim 8,
characterized,
that the additional heating device comprises a heating resistor (RH).
dadurch gekennzeichnet,
daß der zusätzliche Heizwiderstand (RH) parallel zu der Drossel (L) geschaltet ist.Circuit arrangement according to claim 9,
characterized,
that the additional heating resistor (RH) is connected in parallel to the choke (L).
dadurch gekennzeichnet,
daß der zusätzliche Heizwiderstand (RH) parallel zu der aus dem Vorwiderstand (RV) und der Drossel (L) bestehenden Serienschaltung geschaltet ist.Circuit arrangement according to claim 9,
characterized,
that the additional heating resistor (RH) is connected in parallel to the series circuit consisting of the series resistor (RV) and the choke (L).
dadurch gekennzeichnet,
daß eine Steuereinrichtung (ST) zur Steuerung der Schaltereinrichtung (S) vorgesehen ist.Circuit arrangement according to claim 3,
characterized,
that a control device (ST) is provided for controlling the switch device (S).
dadurch gekennzeichnet,
daß die Steuereinrichtung (ST) die zunächst offene Schaltereinrichtung (S) nach Ablauf der bestimmten Zeit schließt.Circuit arrangement according to claim 12,
characterized,
that the control device (ST) closes the initially open switch device (S) after the specified time.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4319501 | 1993-06-11 | ||
| DE4319501 | 1993-06-11 | ||
| 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 |
| DE4404658 | 1994-02-14 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0629104A2 true EP0629104A2 (en) | 1994-12-14 |
| EP0629104A3 EP0629104A3 (en) | 1995-08-02 |
| EP0629104B1 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19515592A1 (en) * | 1995-05-02 | 1996-11-07 | Walter Holzer | Soft-start gas-discharge lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| FR2383576A1 (en) * | 1977-03-08 | 1978-10-06 | Ulrich Helmut | Starter and supply circuit for fluorescent tubes - has series resonant circuit using current limiting choke for starting and variable resistance for light control |
| EP0485866A1 (en) * | 1990-11-15 | 1992-05-20 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Switching circuit for operating a discharge lamp |
Family Cites Families (4)
| 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 |
| 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 |
-
1994
- 1994-02-14 DE DE4404658A patent/DE4404658A1/en not_active Withdrawn
- 1994-05-24 AT AT94107985T patent/ATE187863T1/en not_active IP Right Cessation
- 1994-05-24 EP EP94107985A patent/EP0629104B1/en not_active Expired - Lifetime
- 1994-05-24 DE DE59409000T patent/DE59409000D1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| FR2383576A1 (en) * | 1977-03-08 | 1978-10-06 | Ulrich Helmut | Starter and supply circuit for fluorescent tubes - has series resonant circuit using current limiting choke for starting and variable resistance for light control |
| EP0485866A1 (en) * | 1990-11-15 | 1992-05-20 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Switching circuit for operating a discharge lamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE187863T1 (en) | 2000-01-15 |
| DE59409000D1 (en) | 2000-01-20 |
| DE4404658A1 (en) | 1994-12-15 |
| EP0629104B1 (en) | 1999-12-15 |
| EP0629104A3 (en) | 1995-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0185179B1 (en) | Starting circuit for low-pressure discharge 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 | |
| DE4100349C2 (en) | Electronic ballast | |
| EP0629104B1 (en) | Circuit for limiting the DC crest current and/or the inrush current after the ignition of a discharge lamp | |
| EP0319003B1 (en) | Supply circuit for a low or high pressure discharge lamp, a mercury vapour lamp or the like | |
| DE10252836A1 (en) | Device for operating discharge lamps | |
| EP2103192B1 (en) | Circuit arrangement and method for starting and operating one or more discharge lamps | |
| 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 | |
| DE2032446A1 (en) | Circuit arrangement for an alternating current fed gas discharge lamp with preheatable electrodes | |
| AT383000B (en) | CIRCUIT TO OPERATE AT LEAST ONE GAS DISCHARGE LAMP WITH HIGH FREQUENCY VOLTAGE | |
| 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 | |
| DE3236852C2 (en) | Starting device for gas discharge lamps with heatable electrodes | |
| DE9104136U1 (en) | Starter for AC powered low pressure discharge lamps | |
| DE4406534C2 (en) | Ignitor for cold start discharge lamps | |
| EP1377136A2 (en) | Device for operating discharge lamps | |
| DE4120269C2 (en) | Inverter for igniting and operating a discharge lamp with heated electrodes | |
| DE2514321A1 (en) | Starter circuit for vapour discharge lamp - has supply voltage applied to lamp electrodes via choke element | |
| DE3438003A1 (en) | Circuit arrangement for the AC operation of gas-discharge lamps | |
| DE2452417A1 (en) | Safety starter for LV discharge lamp - has NTC register soldered to bimetal strip for short pre-heat and cut-out times | |
| DE1914211C (en) | Starterless circuit arrangement for the operation of one or more low-voltage fluorescent lamps | |
| EP1589791A2 (en) | Bypass device for bypassing an electric load | |
| DE1764697C3 (en) | Circuit arrangement for igniting and operating low-voltage discharge lamps |
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 |