EP1755363A1 - Circuit and method for operating at least one electric discharge lamp and at least one Led - Google Patents
Circuit and method for operating at least one electric discharge lamp and at least one Led Download PDFInfo
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- EP1755363A1 EP1755363A1 EP06013146A EP06013146A EP1755363A1 EP 1755363 A1 EP1755363 A1 EP 1755363A1 EP 06013146 A EP06013146 A EP 06013146A EP 06013146 A EP06013146 A EP 06013146A EP 1755363 A1 EP1755363 A1 EP 1755363A1
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- led
- supply unit
- circuit
- bridge
- circuit arrangement
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- 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
- H05B35/00—Electric light sources using a combination of different types of light generation
Definitions
- the present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED (Light Emitting Diode), comprising an inverter with a bridge circuit having at least a first and a second series-connected bridge transistor, wherein between the first and the second bridge transistor a center of the bridge circuit is defined, and a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which comprises a supply line with an inductance, via which the center of the bridge circuit is coupled to a first terminal for the electric lamp. It also relates to a corresponding operating method for at least one electric lamp and at least one LED on such a circuit arrangement.
- LED Light Emitting Diode
- the basic problem underlying the present invention is that in order to achieve special optical effects, for example for realizing an emergency light or night light function of a lighting unit or for varying the color temperature, both electric lamps, for example fluorescent lamps, and LEDs are operated in a lighting unit.
- two ballasts are used in the prior art, namely a ballast for the LEDs and a second for the fluorescent lamps.
- both ballasts are connected by the manufacturer of such a lighting unit via corresponding lines to the mains connection of the lighting unit.
- a disadvantage of this known solution is the costs incurred by the manufacturer of such a lighting unit cabling and the costs incurred by the two ballasts in such a lighting unit space.
- the object of the present invention is therefore to further develop the circuit arrangement mentioned at the outset or the operating method mentioned at the outset in such a way that it is possible to reduce the cabling effort and to reduce the space requirement of the unit (s) used to drive the electric lamps or the LEDs.
- the present invention is based on the recognition that the disadvantages of the prior art can be overcome if the at least one electric lamp and the at least one LED are operated with one and the same ballast. Because this only requires a ballast to be connected to the power supply. On the other hand, such a ballast requires less space than the two ballasts that were necessary in the prior art approach, especially when certain assemblies are used both for the operation of the at least one electric lamp and for the operation of the at least one LED. To realize the night-light function, in which only the at least one LED should be lit, the bridge circuit can be operated at a frequency which is higher than the frequency in normal operation, but in which the ignition condition for the electric lamp is not yet met. An optional preheater for the coils should be deactivated.
- an ohmic resistance and / or an inductance can be connected in series with the at least one LED.
- a preferred embodiment is characterized in that the LED supply unit has an input and an output, wherein the input and the output are galvanically isolated from each other in terms of their potentials.
- the potential separation ensures that no direct current is transferred from the input of the LED supply unit to the output of the LED supply unit. This measure makes it easy to comply with the safety regulations for the operation of LEDs provided for some applications or in various countries.
- the LED supply unit comprises a transformer, which is coupled to the supply line, in particular to the center of the bridge circuit.
- the amplitude of the AC voltage can be set on the secondary side.
- a particularly space-saving realization can be achieved if the inductance in the supply line of the electric lamp represents the primary winding of this transformer.
- the LED supply unit may also comprise a capacitive voltage divider which is connected to the supply line, in particular to the center of the bridge circuit.
- the capacitive voltage divider replaces the above-mentioned transformer and also ensures that no direct current is transmitted from the input to the output of the LED supply unit.
- so-called X or Y capacitors are considered for the capacitive voltage divider.
- a voltage limiting device in particular a Zener diode, is preferably connected in parallel with the at least one LED.
- a voltage limiting device in particular a Zener diode, is preferably connected in parallel with the at least one LED.
- the LED supply unit further comprises a rectifier which is designed to be connected to the output of the LED supply unit, i. H. at the terminal, where the at least one LED is connected to the LED supply unit to provide a rectified signal.
- a rectifier which is designed to be connected to the output of the LED supply unit, i. H. at the terminal, where the at least one LED is connected to the LED supply unit to provide a rectified signal.
- a smoothing inductor can be serially inserted in the current path of the LEDs.
- FIG. 1 shows a schematic representation of a first embodiment of a circuit arrangement according to the invention, wherein for reasons of clarity, only the relevant in terms of the invention components are shown.
- a so-called intermediate circuit voltage U ZW applied which, as is well known, is generated from the mains voltage and usually is on the order of 400V.
- a half-bridge circuit is used as the bridge circuit.
- the switches S1 and S2 are driven in a known manner for the realization of an inverter.
- a center M of the bridge circuit is defined.
- a lamp supply unit 10 which serves to supply an electric lamp LP. It comprises a coupling capacitor C1, an inductance L1 and a resonance capacitor C2.
- an LED supply unit 12 which is designed to supply the LED with energy.
- the LED supply unit 12 comprises a transformer Tr with a transmission ratio U, whose primary side is coupled to the center M of the bridge circuit and whose secondary side to a Rectifier coupled to the diodes D1 to D4, wherein the output of the rectifier is coupled to the LED.
- FIG. 2 shows a schematic representation of the relevant components of a second embodiment of a circuit arrangement according to the invention, wherein for components corresponding to those of Figure 1, the same, already introduced with reference to Figure 1 reference numerals are used.
- the inductance L1 in the supply line of the electric lamp LP represents the primary winding of the transformer Tr.
- the secondary transformer winding is applied to the inductance L1.
- the LED in the preheating and in the ignition of the electric lamp LP with a different current, in ignition mode, especially with a higher current, operated as intended for ongoing operation is to protect the LED against overloading by excessive voltages, in particular in Zünd ist, parallel to the LED, a voltage limiting device, in this case a Zener diode ZI arranged.
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Schaltungsanordnung zum Betrieb mindestens einer elektrischen Lampe und mindestens einer LED (Light-Emitting Diode), umfassend einen Wechselrichter mit einer Brückenschaltung mit mindestens einem ersten und einem zweiten in Serie zueinander angeordneten Brückentransistor, wobei zwischen dem ersten und dem zweiten Brückentransistor ein Mittelpunkt der Brückenschaltung definiert ist, und einer Lampen-Versorgungseinheit zur Versorgung der elektrischen Lampe mit Energie aus der Brückenschaltung, die eine Versorgungsleitung mit einer Induktivität umfasst, über die der Mittelpunkt der Brückenschaltung mit einem ersten Anschluss für die elektrische Lampe gekoppelt ist. Sie betrifft überdies ein entsprechendes Betriebsverfahren für mindestens eine elektrische Lampe und mindestens eine LED an einer derartigen Schaltungsanordnung.The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED (Light Emitting Diode), comprising an inverter with a bridge circuit having at least a first and a second series-connected bridge transistor, wherein between the first and the second bridge transistor a center of the bridge circuit is defined, and a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which comprises a supply line with an inductance, via which the center of the bridge circuit is coupled to a first terminal for the electric lamp. It also relates to a corresponding operating method for at least one electric lamp and at least one LED on such a circuit arrangement.
Die grundsätzlich der vorliegenden Erfindung zugrunde liegende Problematik besteht darin, dass zur Erzielung besonderer optischer Effekte, beispielsweise zur Realisierung einer Notlicht- oder Nachtlichtfunktion einer Beleuchtungseinheit oder zur Variation der Farbtemperatur, in einer Beleuchtungseinheit sowohl elektrische Lampen, beispielsweise Leuchtstofflampen, als auch LEDs betrieben werden. Hierzu werden im Stand der Technik zwei Vorschaltgeräte verwendet, und zwar ein Vorschaltgerät für die Leuchtdioden und ein zweites für die Leuchtstofflampen. Dabei werden vom Hersteller einer derartigen Beleuchtungseinheit beide Vorschaltgeräte über entsprechende Leitungen mit dem Netzanschluss der Beleuchtungseinheit verbunden. Nachteilig an dieser bekannten Lösung ist der beim Hersteller einer derartigen Beleuchtungseinheit anfallende Verkabelungsaufwand sowie der durch die zwei Vorschaltgeräte in einer derartigen Beleuchtungseinheit anfallende Platzbedarf.The basic problem underlying the present invention is that in order to achieve special optical effects, for example for realizing an emergency light or night light function of a lighting unit or for varying the color temperature, both electric lamps, for example fluorescent lamps, and LEDs are operated in a lighting unit. For this purpose, two ballasts are used in the prior art, namely a ballast for the LEDs and a second for the fluorescent lamps. In this case, both ballasts are connected by the manufacturer of such a lighting unit via corresponding lines to the mains connection of the lighting unit. A disadvantage of this known solution is the costs incurred by the manufacturer of such a lighting unit cabling and the costs incurred by the two ballasts in such a lighting unit space.
Die Aufgabe der vorliegenden Erfindung besteht deshalb darin, die eingangs genannte Schaltungsanordnung bzw. das eingangs genannte Betriebsverfahren derart weiterzubilden, dass eine Reduktion des Verkabelungsaufwands sowie eine Reduktion des Platzbedarfs der zur Ansteuerung der elektrischen Lampen bzw. der LEDs verwendeten Einheit(en) ermöglicht wird.The object of the present invention is therefore to further develop the circuit arrangement mentioned at the outset or the operating method mentioned at the outset in such a way that it is possible to reduce the cabling effort and to reduce the space requirement of the unit (s) used to drive the electric lamps or the LEDs.
Diese Aufgabe wird gelöst durch eine Schaltungsanordnung mit den Merkmalen von Patentanspruch 1 sowie durch ein Betriebsverfahren mit den Merkmalen von Patentanspruch 8.This object is achieved by a circuit arrangement having the features of patent claim 1 and by an operating method having the features of patent claim 8.
Die vorliegende Erfindung basiert grundsätzlich auf der Erkenntnis, dass die Nachteile des Stands der Technik überwunden werden können, wenn die mindestens eine elektrische Lampe und die mindestens eine LED mit ein und demselben Vorschaltgerät betrieben werden. Denn dadurch braucht zum einen nur dieses eine Vorschaltgerät mit dem Netzanschluss verkabelt werden. Zum anderen benötigt ein derartiges Vorschaltgerät weniger Raum als die zwei Vorschaltgeräte, die bei der Vorgehensweise nach dem Stand der Technik nötig waren, insbesondere wenn bestimmte Baugruppen sowohl für den Betrieb der mindestens einen elektrischen Lampe als auch für den Betrieb der mindestens einen LED genutzt werden. Zur Realisierung der Nachtlichtfunktion, bei der nur die mindestens eine LED leuchten soll, kann die Brückenschaltung bei einer Frequenz betrieben werden, die höher ist als die Frequenz im Normalbetrieb, bei der jedoch die Zündbedingung für die elektrische Lampe noch nicht erfüllt wird. Dabei sollte eine für die Wendeln optionale Vorheizung deaktiviert sein.Basically, the present invention is based on the recognition that the disadvantages of the prior art can be overcome if the at least one electric lamp and the at least one LED are operated with one and the same ballast. Because this only requires a ballast to be connected to the power supply. On the other hand, such a ballast requires less space than the two ballasts that were necessary in the prior art approach, especially when certain assemblies are used both for the operation of the at least one electric lamp and for the operation of the at least one LED. To realize the night-light function, in which only the at least one LED should be lit, the bridge circuit can be operated at a frequency which is higher than the frequency in normal operation, but in which the ignition condition for the electric lamp is not yet met. An optional preheater for the coils should be deactivated.
Zur Begrenzung des Stroms durch die mindestens eine LED kann ein ohmscher Widerstand und/oder eine Induktivität in Reihe zur mindestens einen LED geschaltet werden.To limit the current through the at least one LED, an ohmic resistance and / or an inductance can be connected in series with the at least one LED.
Eine bevorzugte Ausführungsform zeichnet sich dadurch aus, dass die LED-Versorgungseinheit einen Eingang und einen Ausgang aufweist, wobei der Eingang und der Ausgang hinsichtlich ihrer Potentiale voneinander galvanisch getrennt sind. Durch die Potentialtrennung wird sichergestellt, dass kein Gleichstrom vom Eingang der LED-Versorgungseinheit an den Ausgang der LED-Versorgungseinheit übertragen wird. Durch diese Maßnahme lassen sich auf einfache Weise die für manche Anwendungen bzw. in diversen Ländern vorgesehenen Sicherheitsvorschriften für den Betrieb von LEDs einhalten.A preferred embodiment is characterized in that the LED supply unit has an input and an output, wherein the input and the output are galvanically isolated from each other in terms of their potentials. The potential separation ensures that no direct current is transferred from the input of the LED supply unit to the output of the LED supply unit. This measure makes it easy to comply with the safety regulations for the operation of LEDs provided for some applications or in various countries.
Besonders bevorzugt umfasst die LED-Versorgungseinheit einen Übertrager, der mit der Versorgungsleitung, insbesondere mit dem Mittelpunkt der Brückenschaltung, gekoppelt ist.Particularly preferably, the LED supply unit comprises a transformer, which is coupled to the supply line, in particular to the center of the bridge circuit.
Im Betrieb liegt damit auf der Primärseite des Übertragers eine Wechselspannung mit konstanter Amplitude an und folglich auch auf der Sekundärseite des Übertragers. Durch die Wahl des Windungsverhältnisses kann die Amplitude der Wechselspannung auf der Sekundärseite festgelegt werden. Infolge der Spannung auf der Sekundärseite des Übertragers ergibt sich über die Kennlinie der mindestens einen LED ein typischer Strom durch die LED und damit eine bestimmte Farbtemperatur.In operation, this results in an alternating voltage with a constant amplitude on the primary side of the transformer and consequently also on the secondary side of the transformer. By choosing the turns ratio, the amplitude of the AC voltage can be set on the secondary side. As a result of the voltage on the secondary side of the transformer results over the characteristic of at least one LED, a typical current through the LED and thus a certain color temperature.
Eine besonders Raum sparende Realisierung lässt sich erzielen, wenn die Induktivität in der Versorgungsleitung der elektrischen Lampe die Primärwicklung dieses Übertragers darstellt.A particularly space-saving realization can be achieved if the inductance in the supply line of the electric lamp represents the primary winding of this transformer.
Die LED-Versorgungseinheit kann auch einen kapazitiven Spannungsteiler umfassen, der mit der Versorgungsleitung, insbesondere mit dem Mittelpunkt der Brückenschaltung verbunden ist. Dabei ersetzt der kapazitive Spannungsteiler den oben erwähnten Übertrager und stellt ebenfalls sicher, dass kein Gleichstrom vom Eingang zum Ausgang der LED-Versorgungseinheit übertragen wird. Für den kapazitiven Spannungsteiler kommen im Hinblick auf gute Isolationseigenschaften insbesondere so genannte X- oder Y-Kondensatoren in Betracht.The LED supply unit may also comprise a capacitive voltage divider which is connected to the supply line, in particular to the center of the bridge circuit. In this case, the capacitive voltage divider replaces the above-mentioned transformer and also ensures that no direct current is transmitted from the input to the output of the LED supply unit. With regard to good insulation properties, in particular so-called X or Y capacitors are considered for the capacitive voltage divider.
Bevorzugt ist weiterhin parallel zu der mindestens einen LED eine Spannungsbegrenzungsvorrichtung, insbesondere eine Zener-Diode, geschaltet. Insbesondere bei der oben bereits erwähnten Ausführungsform, bei der die Induktivität in der Versorgungsleitung der elektrischen Lampe die Primärwicklung des Übertragers darstellt, wird durch eine derartige Spannungsbegrenzungsvorrichtung sichergestellt, dass die mindestens eine LED vor Überlastung durch zu hohe Spannungen im Zündbetrieb der elektrischen Lampe gesichert wird.Furthermore, a voltage limiting device, in particular a Zener diode, is preferably connected in parallel with the at least one LED. In particular, in the above-mentioned embodiment, in which the inductance in the supply line of the electric lamp is the primary winding of the transformer is ensured by such a voltage limiting device that the at least one LED is secured against overloading by excessive voltages in the ignition operation of the electric lamp.
Bevorzugt umfasst die LED-Versorgungseinheit weiterhin einen Gleichrichter, der ausgelegt ist, am Ausgang der LED-Versorgungseinheit, d. h. an dem Anschluss, an dem die mindestens eine LED an die LED-Versorgungseinheit angeschlossen wird, ein gleichgerichtetes Signal bereitzustellen.Preferably, the LED supply unit further comprises a rectifier which is designed to be connected to the output of the LED supply unit, i. H. at the terminal, where the at least one LED is connected to the LED supply unit to provide a rectified signal.
Vorteilhaft kann zur Glättung des Stroms in den LEDs eine Glättungsdrossel in den Strompfad der LEDs seriell eingefügt werden.Advantageously, to smooth the current in the LEDs, a smoothing inductor can be serially inserted in the current path of the LEDs.
Weitere vorteilhafte Ausführungsformen ergeben sich aus den Unteransprüchen.Further advantageous embodiments will become apparent from the dependent claims.
Die im Vorhergehenden mit Bezug auf die erfindungsgemäße Schaltungsanordnung beschriebenen bevorzugten Ausführungsformen und Vorteile gelten entsprechend für das erfindungsgemäße Betriebsverfahren.The preferred embodiments and advantages described above with reference to the circuit arrangement according to the invention apply correspondingly to the operating method according to the invention.
Im Nachfolgenden werden nunmehr zwei Ausführungsbeispiele einer erfindungsgemäßen Schaltungsanordnung mit Bezug auf die beigefügten Zeichnungen näher beschrieben. Es zeigen:
- Figur 1
- ein erstes Ausführungsbeispiel einer erfindungsgemäßen Schaltungsanordnung; und
Figur 2- ein zweites Ausführungsbeispiel einer erfindungsgemäßen Schaltungsanordnung.
- FIG. 1
- a first embodiment of a circuit arrangement according to the invention; and
- FIG. 2
- A second embodiment of a circuit arrangement according to the invention.
Figur 1 zeigt in schematischer Darstellung ein erstes Ausführungsbeispiel einer erfindungsgemäßen Schaltungsanordnung, wobei aus Gründen der Übersichtlichkeit lediglich die im Hinblick auf die Erfindung relevanten Bauelemente dargestellt sind. So wird an die Serienschaltung eines ersten Schalters S1, realisiert durch einen ersten Brückentransistor, und eines zweiten Schalters S2, realisiert durch einen zweiten Brückentransistor, eine so genannte Zwischenkreisspannung UZW angelegt, die, wie allgemein bekannt ist, aus der Netzspannung erzeugt wird und üblicherweise in der Größenordnung von 400 V liegt. Im vorliegenden Ausführungsbeispiel wird als Brückenschaltung eine Halbbrückenschaltung verwendet. Wie für den Fachmann jedoch offensichtlich, kann die Erfindung auch unter Verwendung einer Vollbrückenschaltung realisiert werden. Die Schalter S1 und S2 werden in bekannter Weise zur Realisierung eines Wechselrichters angesteuert. Zwischen den beiden Schalten S1, S2 ist ein Mittelpunkt M der Brückenschaltung definiert. Mit dem Brückenmittelpunkt M ist eine Lampen-Versorgungseinheit 10 verbunden, die zur Versorgung einer elektrischen Lampe LP dient. Sie umfasst einen Koppelkondensator C1, eine Induktivität L1 und einen Resonanzkondensator C2. Erfindungsgemäß umfasst sie überdies eine LED-Versorgungseinheit 12, die ausgelegt ist, die LED mit Energie zu versorgen. Die LED-Versorgungseinheit 12 umfasst einen Übertrager Tr mit einem Übersetzungsverhältnis Ü, dessen Primärseite an den Mittelpunkt M der Brückenschaltung gekoppelt ist und dessen Sekundärseite an einen Gleichrichter gekoppelt ist, der die Dioden D1 bis D4 umfasst, wobei der Ausgang des Gleichrichters an die LED gekoppelt ist. Durch die Wahl des Übersetzungsverhältnisses Ü des Übertragers Tr können die Eigenschaften des von der LED abgegebenen Lichts, insbesondere die Farbtemperatur und die Helligkeit, eingestellt werden.Figure 1 shows a schematic representation of a first embodiment of a circuit arrangement according to the invention, wherein for reasons of clarity, only the relevant in terms of the invention components are shown. Thus, to the series connection of a first switch S1, realized by a first bridge transistor, and a second switch S2 realized by a second bridge transistor, a so-called intermediate circuit voltage U ZW applied, which, as is well known, is generated from the mains voltage and usually is on the order of 400V. In the present embodiment, a half-bridge circuit is used as the bridge circuit. However, as will be apparent to those skilled in the art, the invention can also be practiced using a full bridge circuit. The switches S1 and S2 are driven in a known manner for the realization of an inverter. Between the two switches S1, S2, a center M of the bridge circuit is defined. With the bridge center M, a
Figur 2 zeigt in schematischer Darstellung die relevanten Bauelemente eines zweiten Ausführungsbeispiels einer erfindungsgemäßen Schaltungsanordnung, wobei für Bauelemente, die denen von Figur 1 entsprechen, dieselben, bereits mit Bezug auf Figur 1 eingeführten Bezugszeichen verwendet werden. Bei dem in Figur 2 dargestellten Ausführungsbeispiel stellt die Induktivität L1 in der Versorgungsleitung der elektrischen Lampe LP die Primärwicklung des Übertragers Tr dar. Zur Realisierung des Übertragers Tr wird dabei die sekundäre Übertragerwicklung auf die Induktivität L1 aufgebracht. Da damit die LED im Vorheiz-und im Zündbetrieb der elektrischen Lampe LP mit einem anderen Strom, im Zündbetrieb insbesondere mit einem höheren Strom, betrieben würde als wie für den laufenden Betrieb vorgesehen, wird zur Absicherung der LED gegen Überlastung durch zu hohe Spannungen, insbesondere im Zündbetrieb, parallel zur LED eine Spannungsbegrenzungsvorrichtung, vorliegend eine Zener-Diode ZI, angeordnet.Figure 2 shows a schematic representation of the relevant components of a second embodiment of a circuit arrangement according to the invention, wherein for components corresponding to those of Figure 1, the same, already introduced with reference to Figure 1 reference numerals are used. In the exemplary embodiment illustrated in FIG. 2, the inductance L1 in the supply line of the electric lamp LP represents the primary winding of the transformer Tr. To implement the transformer Tr, the secondary transformer winding is applied to the inductance L1. Since the LED in the preheating and in the ignition of the electric lamp LP with a different current, in ignition mode, especially with a higher current, operated as intended for ongoing operation, is to protect the LED against overloading by excessive voltages, in particular in Zündbetrieb, parallel to the LED, a voltage limiting device, in this case a Zener diode ZI arranged.
Claims (9)
dass die Lampen-Versorgungseinheit (10) eine LED-Versorgungseinheit (12) umfasst, die ausgelegt ist, die mindestens eine LED mit Energie zu versorgen.Circuit arrangement for operating at least one electric lamp (LP) and at least one LED comprising:
in that the lamp supply unit (10) comprises an LED supply unit (12) which is designed to supply the at least one LED with energy.
dadurch gekennzeichnet,
dass die LED-Versorgungseinheit (12) einen Eingang und einen Ausgang aufweist, wobei der Eingang und der Ausgang hinsichtlich ihrer Potentiale voneinander galvanisch getrennt sind.Circuit arrangement according to Claim 1,
characterized,
in that the LED supply unit (12) has an input and an output, the input and the output being galvanically isolated from each other in terms of their potentials.
dadurch gekennzeichnet,
dass die LED-Versorgungseinheit (12) einen Übertrager (Tr) umfasst, der mit der Versorgungsleitung, insbesondere mit dem Mittelpunkt (M) der Brückenschaltung, gekoppelt ist.Circuit arrangement according to one of Claims 1 or 2,
characterized,
in that the LED supply unit (12) comprises a transformer (Tr) which is coupled to the supply line, in particular to the midpoint (M) of the bridge circuit.
dadurch gekennzeichnet,
dass die Induktivität (L1) in der Versorgungsleitung der elektrischen Lampe (LP) die Primärwicklung dieses Übertragers (Tr) darstellt.Circuit arrangement according to Claim 3,
characterized,
that the inductance (L1) in the supply line of the electric lamp is (LP), the primary winding of this transformer (Tr).
dadurch gekennzeichnet,
dass die LED-Versorgungseinheit (12) einen kapazitiven Spannungsteiler umfasst, der mit der Versorgungsleitung, insbesondere mit dem Mittelpunkt (M) der Brückenschaltung, verbunden ist.Circuit arrangement according to one of Claims 1 or 2,
characterized,
in that the LED supply unit (12) comprises a capacitive voltage divider which is connected to the supply line, in particular to the midpoint (M) of the bridge circuit.
dadurch gekennzeichnet,
dass parallel zu der mindestens einen LED eine Spannungsbegrenzungsvorrichtung, insbesondere eine Zener-Diode (Z1), geschaltet ist.Circuit arrangement according to one of the preceding claims,
characterized,
is that parallel to the at least one LED, a voltage limiting device, in particular a Zener diode (Z1) connected.
dadurch gekennzeichnet,
dass die LED-Versorgungseinheit (12) einen Gleichrichter (D1, D2, D3, D4) umfasst, der ausgelegt ist, am Ausgang der LED-Versorgungseinheit ein gleichgerichtetes Signal bereitzustellen.Circuit arrangement according to one of the preceding claims,
characterized,
in that the LED supply unit (12) comprises a rectifier (D1, D2, D3, D4) which is designed to provide a rectified signal at the output of the LED supply unit.
dadurch gekennzeichnet,
dass in Serie zur mindestens einen LED eine Glättungsdrossel geschaltet ist.Circuit arrangement according to one of the preceding claims,
characterized,
that a smoothing reactor is connected in series with the at least one LED.
dadurch gekennzeichnet,
dass die Lampen-Versorgungseinheit (10) eine LED-Versorgungseinheit (12) umfasst, die die mindestens eine LED mit Energie versorgt.Operating method for at least one electric lamp (LP) and at least one LED on a circuit arrangement having an inverter with a bridge circuit having at least a first (S1) and a second (S2) series-connected bridge transistor, wherein between the first (S1) and the second (S2) bridge transistor is a center (M) of the bridge circuit is defined and a lamp supply unit (10) for supplying the electric lamp (LP) with energy from the bridge circuit, which comprises a supply line with an inductance (L1) via the Center point (M) of the bridge circuit is coupled to a first terminal for the electric lamp (LP);
characterized,
in that the lamp supply unit (10) comprises an LED supply unit (12) which supplies the at least one LED with energy.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005030114A DE102005030114A1 (en) | 2005-06-28 | 2005-06-28 | Circuit arrangement for operating electrical lamp e.g. fluorescent lamp, and light emitting diode, has lamps-supply unit with light emitting diode-supply unit, which is designed to supply light emitting diode with energy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1755363A1 true EP1755363A1 (en) | 2007-02-21 |
| EP1755363B1 EP1755363B1 (en) | 2008-12-10 |
Family
ID=37071816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06013146A Not-in-force EP1755363B1 (en) | 2005-06-28 | 2006-06-26 | Circuit for operating at least one fluorescent discharge lamp and at least one LED |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7786683B2 (en) |
| EP (1) | EP1755363B1 (en) |
| CN (1) | CN1893754B (en) |
| AT (1) | ATE417489T1 (en) |
| CA (1) | CA2550940A1 (en) |
| DE (2) | DE102005030114A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7633239B2 (en) * | 2007-03-12 | 2009-12-15 | Masco Corporation | Dimming circuit for controlling electrical power |
| DE102007043416B4 (en) * | 2007-09-12 | 2009-09-17 | P.E.R. Flucht- Und Rettungsleitsysteme Gmbh | Emergency lighting method and system |
| US8164271B2 (en) * | 2008-01-14 | 2012-04-24 | Tai-Her Yang | Uni-directional light emitting diode drive circuit in bi-directional power series resonance |
| US7759880B2 (en) * | 2008-02-12 | 2010-07-20 | General Electric Company | Combined ballast for fluorescent lamp and light emitting diode and method of driving same |
| DE102008057007A1 (en) * | 2008-11-12 | 2010-05-20 | HÜCO Lightronic GmbH | Electronic ballast and lighting system |
| US7990070B2 (en) * | 2009-06-05 | 2011-08-02 | Louis Robert Nerone | LED power source and DC-DC converter |
| EP2362717A3 (en) * | 2010-02-22 | 2017-01-11 | Panasonic Intellectual Property Management Co., Ltd. | Lighting Device and Illumination Fixture using thereof |
| DE102010011157A1 (en) | 2010-03-12 | 2011-09-15 | Vossloh-Schwabe Deutschland Gmbh | Operating apparatus for use as ballast in e.g. high-intensity discharge lamp in room for illumination purposes, has control device comprising control channel to control light source under consideration of control variables |
| DE102010029100A1 (en) * | 2010-05-19 | 2011-11-24 | Osram Gesellschaft mit beschränkter Haftung | Circuit arrangement for operating at least one discharge lamp and at least one LED |
| DE102011005596A1 (en) * | 2011-03-16 | 2012-09-20 | Osram Ag | Electronic ballast for operating at least one LED and / or at least one discharge lamp |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1076476A2 (en) * | 1999-08-11 | 2001-02-14 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Device for operating at least one light emitting diode |
| DE10013207A1 (en) * | 2000-03-17 | 2001-09-20 | Tridonic Bauelemente | Circuit for supplying voltage to and controlling operating characteristics of light emitting diode(s) has inverter with power switches with variable switching frequency for brightness control |
| WO2004097866A1 (en) * | 2003-05-02 | 2004-11-11 | George Alan Limpkin | Apparatus for supplying energy to a load and a related system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4536695A (en) * | 1983-12-12 | 1985-08-20 | Lin Ming Hsin | Discharging protection device for battery-operated portable electric light |
| US5781418A (en) * | 1996-12-23 | 1998-07-14 | Philips Electronics North America Corporation | Switching scheme for power supply having a voltage-fed inverter |
| US6429597B1 (en) * | 1998-10-15 | 2002-08-06 | Hubbell Incorporated | Externally mountable discharge lamp ignition circuit having visual diagnostic indicator |
| TW437909U (en) * | 1998-10-26 | 2001-05-28 | Idea Up Tech Co Ltd | Soft start device of lighting |
| DE10134966A1 (en) * | 2001-07-23 | 2003-02-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Ballast for operating at least one low-pressure discharge lamp |
| US7178971B2 (en) * | 2001-12-14 | 2007-02-20 | The University Of Hong Kong | High efficiency driver for color light emitting diodes (LED) |
| US7323828B2 (en) * | 2005-04-25 | 2008-01-29 | Catalyst Semiconductor, Inc. | LED current bias control using a step down regulator |
| US7196483B2 (en) * | 2005-06-16 | 2007-03-27 | Au Optronics Corporation | Balanced circuit for multi-LED driver |
-
2005
- 2005-06-28 DE DE102005030114A patent/DE102005030114A1/en not_active Withdrawn
-
2006
- 2006-06-26 DE DE502006002311T patent/DE502006002311D1/en active Active
- 2006-06-26 EP EP06013146A patent/EP1755363B1/en not_active Not-in-force
- 2006-06-26 AT AT06013146T patent/ATE417489T1/en active
- 2006-06-27 US US11/475,095 patent/US7786683B2/en not_active Expired - Fee Related
- 2006-06-27 CA CA002550940A patent/CA2550940A1/en not_active Abandoned
- 2006-06-28 CN CN2006101076770A patent/CN1893754B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1076476A2 (en) * | 1999-08-11 | 2001-02-14 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Device for operating at least one light emitting diode |
| DE10013207A1 (en) * | 2000-03-17 | 2001-09-20 | Tridonic Bauelemente | Circuit for supplying voltage to and controlling operating characteristics of light emitting diode(s) has inverter with power switches with variable switching frequency for brightness control |
| WO2004097866A1 (en) * | 2003-05-02 | 2004-11-11 | George Alan Limpkin | Apparatus for supplying energy to a load and a related system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502006002311D1 (en) | 2009-01-22 |
| CA2550940A1 (en) | 2006-12-28 |
| DE102005030114A1 (en) | 2007-01-18 |
| CN1893754B (en) | 2011-03-09 |
| ATE417489T1 (en) | 2008-12-15 |
| EP1755363B1 (en) | 2008-12-10 |
| CN1893754A (en) | 2007-01-10 |
| US7786683B2 (en) | 2010-08-31 |
| US20070210719A1 (en) | 2007-09-13 |
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