EP1755363A1 - Circuit et méthode pour alimenter au moins une lampe à décharge électrique et au moins une Del - Google Patents
Circuit et méthode pour alimenter au moins une lampe à décharge électrique et au moins une Del Download PDFInfo
- Publication number
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- led
- supply unit
- circuit
- bridge
- circuit 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.)
- Granted
Links
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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
- 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.
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005030114A DE102005030114A1 (de) | 2005-06-28 | 2005-06-28 | Schaltungsanordnung und Verfahren zum Betrieb mindestens einer elektrischen Lampe und mindestens einer LED |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1755363A1 true EP1755363A1 (fr) | 2007-02-21 |
EP1755363B1 EP1755363B1 (fr) | 2008-12-10 |
Family
ID=37071816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06013146A Not-in-force EP1755363B1 (fr) | 2005-06-28 | 2006-06-26 | Circuit pour alimenter au moins un tube à décharge fluorescent et au moins une DEL |
Country Status (6)
Country | Link |
---|---|
US (1) | US7786683B2 (fr) |
EP (1) | EP1755363B1 (fr) |
CN (1) | CN1893754B (fr) |
AT (1) | ATE417489T1 (fr) |
CA (1) | CA2550940A1 (fr) |
DE (2) | DE102005030114A1 (fr) |
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 (de) * | 2007-09-12 | 2009-09-17 | P.E.R. Flucht- Und Rettungsleitsysteme Gmbh | Notbeleuchtungsverfahren und -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 (de) * | 2008-11-12 | 2010-05-20 | HÜCO Lightronic GmbH | Elektronisches Vorschaltgerät und Leuchtmittelsystem |
US7990070B2 (en) * | 2009-06-05 | 2011-08-02 | Louis Robert Nerone | LED power source and DC-DC converter |
EP2362717A3 (fr) * | 2010-02-22 | 2017-01-11 | Panasonic Intellectual Property Management Co., Ltd. | Dispositif d'éclairage et accessoire d'éclairage correspondant |
DE102010011157A1 (de) | 2010-03-12 | 2011-09-15 | Vossloh-Schwabe Deutschland Gmbh | Betriebsgerät für eine Entladungslampe |
DE102010029100A1 (de) * | 2010-05-19 | 2011-11-24 | Osram Gesellschaft mit beschränkter Haftung | Schaltungsanordnung zum Betreiben mindestens einer Entladungslampe und mindestens einer LED |
DE102011005596A1 (de) * | 2011-03-16 | 2012-09-20 | Osram Ag | Elektronisches Vorschaltgerät zum Betreiben mindestens einer LED und/oder mindestens einer Entladungslampe |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1076476A2 (fr) * | 1999-08-11 | 2001-02-14 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dispositif pour alimenter au moins une diode électroluminescente |
DE10013207A1 (de) * | 2000-03-17 | 2001-09-20 | Tridonic Bauelemente | Ansteuerung von Leuchtdioden (LED`s) |
WO2004097866A1 (fr) * | 2003-05-02 | 2004-11-11 | George Alan Limpkin | Appareil destine a fournir de l'energie a une charge et systeme associe |
Family Cites Families (8)
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 (de) * | 2001-07-23 | 2003-02-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Vorschaltgerät zum Betrieb mindestens einer Niederdruckentladungslampe |
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/de not_active Withdrawn
-
2006
- 2006-06-26 DE DE502006002311T patent/DE502006002311D1/de active Active
- 2006-06-26 EP EP06013146A patent/EP1755363B1/fr not_active Not-in-force
- 2006-06-26 AT AT06013146T patent/ATE417489T1/de active
- 2006-06-27 CA CA002550940A patent/CA2550940A1/fr not_active Abandoned
- 2006-06-27 US US11/475,095 patent/US7786683B2/en not_active Expired - Fee Related
- 2006-06-28 CN CN2006101076770A patent/CN1893754B/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1076476A2 (fr) * | 1999-08-11 | 2001-02-14 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dispositif pour alimenter au moins une diode électroluminescente |
DE10013207A1 (de) * | 2000-03-17 | 2001-09-20 | Tridonic Bauelemente | Ansteuerung von Leuchtdioden (LED`s) |
WO2004097866A1 (fr) * | 2003-05-02 | 2004-11-11 | George Alan Limpkin | Appareil destine a fournir de l'energie a une charge et systeme associe |
Also Published As
Publication number | Publication date |
---|---|
CA2550940A1 (fr) | 2006-12-28 |
DE502006002311D1 (de) | 2009-01-22 |
CN1893754A (zh) | 2007-01-10 |
CN1893754B (zh) | 2011-03-09 |
EP1755363B1 (fr) | 2008-12-10 |
US20070210719A1 (en) | 2007-09-13 |
ATE417489T1 (de) | 2008-12-15 |
DE102005030114A1 (de) | 2007-01-18 |
US7786683B2 (en) | 2010-08-31 |
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