EP1223792A1 - EVG zum Betrieb von elektrischen Lampen - Google Patents
EVG zum Betrieb von elektrischen Lampen Download PDFInfo
- Publication number
- EP1223792A1 EP1223792A1 EP01129450A EP01129450A EP1223792A1 EP 1223792 A1 EP1223792 A1 EP 1223792A1 EP 01129450 A EP01129450 A EP 01129450A EP 01129450 A EP01129450 A EP 01129450A EP 1223792 A1 EP1223792 A1 EP 1223792A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- inverter
- deactivating
- capacitor
- starting
- 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
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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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters
- H05B41/282—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices
- H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2855—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
Definitions
- the invention relates to a circuit arrangement according to the preamble of the claim 1.
- Such a circuit arrangement is, for example, in the European patent application EP 0 682 464 A1.
- This disclosure discloses one self-oscillating inverter with a start circuit that starts to oscillate of the inverter.
- the circuit arrangement also a device for deactivating the start circuit.
- This device contains a transistor as an essential element, the switching path of which is switched on Condition a shunt to the charging capacitor of the starting circuit forms. After the inverter starts to oscillate, the transistor is switched on and the starter is deactivated.
- the European patent application EP 0 753 987 A1 describes a circuit arrangement with an inverter to charge one or more lamps with a medium or high frequency supply voltage and with a start circuit, which is used to start the inverter oscillation. It also points out Circuit arrangement also a device for deactivating the starting circuit on. This device consists of a resistor and a diode through which the Discharge the capacitor of the starting device after the inverter starts to vibrate is, so that the starting device no further trigger pulses for the control of the inverter can generate. In the case of a defective or unwanted ignition The inverter turns on the lamp with the help of a bistable shutdown device shut down. To reset the bistable shutdown device and so one To enable the inverter to restart, the voltage supply of the Inverter or the lamp are at least briefly interrupted.
- the circuit arrangement according to the invention has an inverter for generation a medium or high frequency supply voltage for one or more Lamps and a starting circuit for the inverter and a device for Deactivating the start circuit, the start circuit being a voltage dependent Has switching means and a capacitor.
- the device for deactivating the The starting circuit has a switching means whose switching path is parallel to the capacitor the starting device is arranged.
- To control this switching means is Device for deactivating the start circuit according to the invention with a Provide threshold switch. This measure will deactivate the Start switching guaranteed even when the inverter does not start up. Moreover is a time delay between the generation by means of the threshold switch the first start impulse by starting and deactivating the Start switching enabled. Through the measure according to the invention, a simpler and less expensive shutdown device can be used to switch off the inverter if the lamp is defective.
- the threshold switch is advantageously arranged and the device to deactivate the start circuit is advantageously designed such that after the reset time after switching off the supply voltage for the inverter of the threshold switch or the reset time of the device to deactivate the start circuit is shorter than the swing-out time of the inverter. This ensures that the circuit arrangement is immediate after switching off the supply voltage again in operation without delay can be taken.
- the threshold switch is advantageous so arranged and the device for deactivating the starting circuit advantageously designed so that after switching on the supply voltage for the inverter, the threshold switch is delayed compared to Start circuit is activated. This ensures that the starting circuit generate at least one or two trigger pulses for oscillation of the inverter can before it is deactivated using the threshold switch.
- Another advantage of the circuit arrangement according to the invention is that instead of a bistable shutdown device designed as a threshold switch Shutdown device can be used, which is cheaper and has a simpler structure.
- the shutdown device designed as a threshold switch is not bistable and can in particular without further Measures do not guarantee a stable shutdown state.
- the device has means for deactivating the starting circuit which, when the Supply voltage for the inverter and after the tripping device has responded, to maintain the deactivated state of the start circuit serves, and the device for deactivating the starting circuit with the as Threshold switch trained shutdown device cooperates in the circuit arrangement according to the invention ensures that after the response the inverter's oscillation permanently is terminated and the oscillation of the inverter is only restarted after one reactivate the supply voltage for the inverter or for the Lamp is possible.
- the starting circuit and the device for deactivation the start circuit advantageously differently dimensioned RC elements on.
- the time constants of the two aforementioned RC elements are thus one on the other agreed that after switching on the supply voltage for the Inverter the threshold voltage of the trigger component of the starter earlier is reached as the threshold voltage of the device for deactivation the threshold switch belonging to the start circuit.
- the time constant is of the RC element belonging to the starting circuit is advantageously smaller as the time constant of that associated with the device for deactivating the starting circuit RC element.
- a discharge resistor for deactivating the RC circuit belonging to the start circuit arranged to discharge the capacitor when the supply voltage is switched off serves for the inverter.
- the discharge resistor and the capacitor of the aforementioned RC element are dimensioned so that the product of the resistance value of the resistance and the capacitance value of the capacitor is smaller than 500 ms and preferably even less than 100 ms. This makes the aforementioned Capacitor almost after the oscillation of the inverter has subsided completely discharged.
- the device for deactivating the starting device has a central component an advantageously designed as a transistor switching means, the switching path parallel to the capacitor of the RC element belonging to the starting circuit is arranged, the device for deactivating the starting device belonging threshold switch with the control electrode of the transistor and with the Capacitor belonging to the device for deactivating the starting circuit RC link is connected.
- the switching path of this transistor forms in the low-resistance Switching state a shunt to the capacitor of the starting device and therefore ensures that the capacitor belonging to the starting circuit is discharged or prevented recharging this capacitor.
- Maintaining the deactivated state of the starting circuit advantageously exists from an electrical connection between the power supply of the inverter and the control electrode of the transistor, the aforementioned electrical connection via the device for deactivating the start circuit belonging threshold switch is performed.
- the transistor remains in the switched on state after the oscillation of the inverter the shutdown device has ended.
- the start circuit therefore remains in the deactivated state.
- the control transformer of the self-oscillating oscillator (or an additional winding on a lamp choke) used, whose primary winding is arranged in a load circuit of the inverter is and its secondary winding for controlling the control electrode of the device serves to deactivate the transistor belonging to the starting circuit.
- the oscillation of the inverter is monitored and the The aforementioned transistor is driven accordingly.
- the invention based on a preferred embodiment explained in more detail.
- the figure shows a schematic diagram of a circuit diagram of the preferred embodiment of the circuit arrangement according to the invention.
- the circuit arrangement shown in the figure is used to operate a low-pressure discharge lamp with an electrical power consumption of approx. 18 W.
- This Circuit arrangement has a self-oscillating half-bridge inverter, the essentially of the alternating switching transistors 1, 2 and Free-wheeling diodes 12, 13 and the toroidal transformer 3-5 is formed.
- the Toroidal transformer 3-5 is used to control transistors 1 and 2.
- the purpose is the primary winding 3 of the toroidal transformer in the series resonant circuit trained load circuit of the half-bridge inverter arranged during the secondary windings 4 and 5 each have a base series resistor 6 and 7 with a base electrode of a half-bridge inverter transistor 1 or 2 are connected.
- the control device for transistors 1 and 2 is through the emitter resistors 8 and 9, the resistors 10, 11 and the capacitor 22, which reduces the switching losses in transistors 1, 2.
- the Load circuit is at the center tap between transistors 1, 2 of the half-bridge inverter connected. It contains in addition to the primary winding 3 of the toroidal transformer a coupling capacitor 14, a resonance inductor 15 and a resonance capacitor 16.
- the connections 17-20 for the electrode filaments of the Low pressure discharge lamp 21 are arranged such that the discharge path the low-pressure discharge lamp 21 is connected in parallel to the resonance capacitor 16 is.
- the half-bridge inverter is powered by Rectify the AC mains voltage with the aid of a diode consisting of four diodes 23-26 Bridge rectifier and a capacitor 27, which is parallel to DC output of the bridge rectifier 23-26 is arranged.
- a diode consisting of four diodes 23-26 Bridge rectifier and a capacitor 27, which is parallel to DC output of the bridge rectifier 23-26 is arranged.
- To the Capacitor 27 is therefore a smoothed DC voltage as a voltage supply ready for the half-bridge inverter.
- the coupling capacitor 14 is charged after switching on the voltage supply via the resistor 51.
- One consisting of a capacitor 28 and a current-compensated choke 29 Filter circuit, which with the mains voltage connections 30, 31 and with AC voltage input of the bridge rectifier 23-26 is used for Interference suppression of the circuit arrangement.
- the circuit arrangement has a starting device for the half-bridge inverter, which essentially consists of the resistor 32 and the capacitor 33 and the diac 34.
- the start circuit is used to initiate the oscillation of the half-bridge inverter, by switching on the power supply for the half-bridge inverter Trigger pulses for the base electrode of transistor 2 are generated.
- the circuit arrangement also has a device for deactivating the start circuit and a shutdown device for decommissioning the half-bridge inverter if the lamp is defective.
- the device for deactivating the starting circuit consists of transistor 35, the switching path of which is parallel to the capacitor 33 of the starting circuit is arranged from the RC element 36, 37, which is parallel to the RC element 32, 33 is connected, from the resistor 38, which is used to discharge the capacitor 37 is used when the power supply is switched off or interrupted Zener diode 39, the cathode on the one hand via the resistor 36 and the connections 17, 18 and an electrode coil of the lamp 21 with the positive pole of the Capacitor 27 and on the other hand with the one at the higher potential Connection of the capacitor 37 is connected and its anode to the base of the Transistor 35 is connected, and from the base series resistor 40, through which the base of the transistor 35 connected to the secondary winding 5 of the toroidal transformer is.
- the shutdown device for decommissioning the half-bridge inverter is as Threshold switch formed and consists of the transistor 41, the switching path parallel to the series circuit from the base series resistor 7 of the transistor 2 and the secondary winding 5 is switched, from the diac 42, which is reached its threshold voltage generates trigger pulses for the base of transistor 41, from the series resistors 43, 44, from the capacitor 45, which is used for the voltage supply of the diacs 42 and the base of the transistor 41 is used, from the voltage dividing resistors 46, 47, with the aid of which the operating voltage of the lamp 21 proportional voltage is generated and with the help of the threshold voltage is set to activate the shutdown device from the capacitor 48, which serves to decouple the direct current component in the lamp current, and from the rectifier diodes 49, 50 serving as current valves.
- a suitable dimensioning of the components of the circuit arrangement is in the Specified table.
- the coupling capacitor 14 through the resistor 51 and the capacitor 33 of the starting circuit charged through resistor 32.
- the diac 34 generates trigger pulses for the base of transistor 2. This will oscillate the half-bridge inverter triggered.
- the two transistors 1, 2 of the half-bridge inverter switch alternately, so that a medium or high frequency current in the load circuit flows. The frequency of this current is determined by the switching frequency of the transistors 1, 2 certainly. Since the load circuit is designed as a series resonance circuit, it is possible to use the resonance capacitor 16 by means of the method of excessive resonance, the one for ignition of the gas discharge in the lamp 21 required ignition voltage is provided become. After the gas discharge has ignited, the capacitor 16 is through the then conductive discharge path of the low-pressure discharge lamp 21 short-circuited.
- the start circuit is activated immediately after the half-bridge inverter starts up by means of the primary winding 3 and the secondary winding connected to the load circuit 5 of the toroidal transformer is deactivated.
- a medium or high frequency current in the secondary winding 5 a corresponding voltage for controlling the bases of the transistors 2 and 35 induced.
- the transistor 35 is therefore through its base series resistor 40 turned on and this allows the capacitor 33 through the transistor 35 discharged so that the threshold voltage of the diac 34 is no longer reached and the diac 34 generates no further trigger pulses. Because of the control through the transformer windings 3, 5, the transistor 35 switches in the same Rhythm like the transistor 2. However, the capacitor 33 is not noticeably charged.
- the base of transistor 35 also becomes controlled via the RC element 36, 37 and the Zener diode 39.
- the capacitor 37 is simultaneously via the resistor 36 after switching on the power supply charged with the capacitor 33. Since the time constant of the RC element 36, 37 but is greater than the time constant of the RC element 32, 33 of the start circuit, on the capacitor 33, the threshold voltage required to switch the diac 34 on provided earlier than on the capacitor 37 for switching the Zener diode 39 required threshold voltage.
- the diac 34 can therefore at least generate one or two trigger pulses to control the base of transistor 2, before the capacitor 37 is charged to the threshold voltage of the zener diode 39 is and the transistor 35 is turned on via the Zener diode 39.
- the transistor 35 After switching on the transistor 35 via the Zener diode 39, the transistor 35 remains in the on state, even after the voltage at the capacitor 37 dropped below the threshold voltage of the Zener diode 39 is because the Zener diode 39 on the current path, the components 5, 40, 39, 36 and Connections 17, 18 and the electrode filament of lamp 21 connected to them contains, is connected to the electrolytic capacitor 27 and thereby the on State of the Zener diode 39 is maintained. Only by a new one Switching on the voltage supply of the circuit arrangement or the half-bridge inverter or by briefly interrupting the above Current path, for example by replacing the lamp 21, the transistor 35 locked and the start circuit can be reactivated.
- the shutdown device monitors by means of the voltage divider resistors 46, 47 and the capacitor 48 and the rectifier diode 49 the positive half-wave the AC voltage component of the operating voltage of the low-pressure discharge lamp 21.
- the capacitor 48 is only for the AC voltage component of the lamp operating voltage permeable. The negative half wave of this AC component is clamped to ground by diode 50.
- Resistor 47 has one positive Half wave of the AC voltage component proportional to the lamp operating voltage Tension.
- the capacitor is also at the same voltage value 45 charged. In the case of an ignition-defective or defective lamp 21 or for the case that the operating voltage of the lamp 21 has increased excessively due to aging , the voltage drop across capacitor 45 reaches the threshold voltage of the Diacs 42.
- the Diac 42 then generates trigger pulses for the base of the Transistor 41.
- the transistor 41 is thereby through the resistor 43, the diac 42nd and the base series resistor 44 is switched on and deprives the base of the transistor 2 the control signal so that the oscillation of the half-bridge inverter ends becomes.
- the transistor 41 remains in the on state only until the Has discharged capacitor 45 so far that the voltage drop across capacitor 45 is less than the threshold voltage of the diac 42. After that, the transistor 41 returns back to the locked state. Since the start circuit by discharging the capacitor 33 is deactivated via the switched-on transistor 35, the diac 34 no trigger pulses for the half-bridge inverter to start up again produce.
- the half-bridge inverter is therefore permanently shut down, even though the Base of the transistor 2 only removed the control signal for a relatively short period of time has been.
- the time for decay is the oscillation of the half-bridge inverter approximately 0.5 s to 1 s.
- the two Components 37, 38 are dimensioned such that the capacitor 37 at the end of the oscillation of the half-bridge inverter is almost completely discharged.
- the circuit arrangement according to the invention can, for example, additionally be a Have temperature compensation element that for adjusting the switch-off threshold the switch-off device to the temperature-dependent operating voltage of the lamp 21 serves. It has been shown that the operating voltage of the lamp increases Temperature may decrease.
- the shutdown threshold of the shutdown device To adapt accordingly, a temperature compensation element is provided, which consists of the correspondingly dimensioned parallel connection of an ohmic resistor with a thermistor. This parallel connection can, for example, at the node, which is defined by the components 48, 49, 50, in the inventive Circuit arrangement can be integrated.
- a PTC thermistor can be arranged to before ignition to allow the gas discharge in the lamp 21 to preheat its electrode filaments.
- the circuit arrangement according to the invention can also include a harmonic filter according to patent specification EP 0 244 644 have a sinusoidal shape Ensure mains current drain.
- the shutdown device in addition to the lamp operating voltage, the voltage drop across the capacitor 27 monitor by, for example, the positive connection of the capacitor 27 via a reverse polarized Zener diode with the through the components 43, 45 and 49 defined node is connected.
- the circuit arrangement according to the invention can also be designed such that it is suitable for operating a plurality of low-pressure discharge lamps connected in series or in parallel.
- the shutdown device according to the invention can also be used in circuit arrangements for operating high-pressure discharge lamps or halogen incandescent lamps.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
| Dimensionierung der elektrischen Bauteile gemäß des bevorzugten Ausführungsbeispiels | |
| 1, 2 | BUJ105A |
| 3, 4, 5 | 7/2/2 Windungen |
| 6, 7 | 6,8 Ω |
| 8, 9 | 0,47 Ω |
| 10,11 | 33 Ω |
| 12, 13 | BYD33J |
| 14, 28 | 220 nF |
| 15 | 1,5 mH |
| 16 | 10 nF |
| 22 | 3,3 nF |
| 23-26 | 1N4007 |
| 27 | 4,7 µF |
| 29 | 2x39 mH |
| 32 | 1,2 MΩ |
| 33, 37 | 100 nF |
| 35 | BC847A |
| 36, 51 | 2 MΩ |
| 38, 44, 47 | 220 kΩ |
| 40 | 68 kΩ |
| 41 | BC368 |
| 43 | 100 Ω |
| 45 | 22 µF |
| 46 | 470 kΩ |
| 48 | 2,2 nF |
| 49, 50 | 1N4148 |
Claims (10)
- Schaltungsanordnung zum Betrieb von elektrischen Lampen, wobei die Schaltungsanordnung einen Wechselrichter zur Erzeugung einer mittel- oder hochfrequenten Versorgungsspannung für eine oder mehrere Lampen (21) und eine Startschaltung für den Wechselrichter sowie eine Vorrichtung zum Deaktivieren der Startschaltung aufweist, wobei die Startschaltung ein spannungsabhängiges Schaltelement (34) und einen Kondensator (33) umfasst, und wobei die Vorrichtung zum Deaktivieren der Startschaltung ein Schaltmittel (35) umfasst, dessen Schaltstrecke parallel zum Kondensator (33) der Startschaltung angeordnet ist,
dadurch gekennzeichnet, dass die Vorrichtung zum Deaktivieren der Startschaltung einen Schwellwertschalter (39) zur Steuerung des Schaltmittels (35) aufweist. - Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, dass der Schwellwertschalter (39) derart angeordnet ist und die Vorrichtung zum Deaktivieren der Startschaltung derart ausgebildet ist, dass nach dem Ausschalten der Versorgungsspannung für den Wechselrichter die Rücksetzdauer des Schwellwertschalters (39) beziehungsweise die Rücksetzdauer der Vorrichtung zum Deaktivieren der Startschaltung kürzer ist als die Ausschwingdauer des Wechselrichters.
- Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, dass der Schwellwertschalter (39) so angeordnet ist und die Vorrichtung zum Deaktivieren der Startschaltung so ausgebildet ist, dass nach dem Einschalten der Versorgungsspannung für den Wechselrichter der Schwellwertschalter (39) zeitverzögert gegenüber der Startschaltung aktiviert wird.
- Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Schaltungsanordnung eine als Schwellwertschalter ausgebildete Abschaltungsvorrichtung aufweist, die zum Abschalten des Wechselrichters bei defekter oder zündunwilliger Lampe (21) dient, und die Vorrichtung zum Deaktivieren der Startschaltung ein Mittel aufweist, das, bei eingeschalteter Spannungsversorgung für den Wechselrichter und nach dem Ansprechen der Abschaltungsvorrichtung, zur Aufrechterhaltung des deaktivierten Zustandes der Startschaltung dient.
- Schaltungsanordnung nach Anspruch 1 oder 3, dadurch gekennzeichnet, dass die Startschaltung einen Widerstand (32) aufweist, der mit dem Kondensator (33) der Startschaltung ein RC-Glied bildet, und die Vorrichtung zum Deaktivieren der Startvorrichtung ein RC-Glied (36, 37) besitzt, wobei die Zeitkonstante des RC-Gliedes (32, 33) der Startschaltung kleiner als die Zeitkonstante des RC-Gliedes (36, 37) der Vorrichtung zum Deaktivieren der Startvorrichtung ist.
- Schaltungsanordnung nach den Ansprüchen 2 und 5, dadurch gekennzeichnet, dass parallel zum Kondensator (37) des RC-Gliedes der Vorrichtung zum Deaktivieren der Startvorrichtung ein Widerstand (38) angeordnet ist, der zum Entladen des Kondensators (37) bei ausgeschalteter Versorgungsspannung für den Wechselrichter dient, wobei der Widerstand (38) und der Kondensator (37) so dimensioniert sind, dass das Produkt aus dem Widerstandswert des Widerstandes (38) und dem Kapazitätswert des Kondensators (37) kleiner als 500 ms ist.
- Schaltungsanordnung nach Anspruch 5, dadurch gekennzeichnet, dass das Schaltmittel (35) der Vorrichtung zum Deaktivieren der Startvorrichtung als Transistor ausgebildet ist, dessen Schaltstrecke parallel zum Kondensator (33) des zur Startschaltung gehörenden RC-Gliedes (32, 33) angeordnet ist, wobei der Schwellwertschalter (39) mit der Steuerelektrode des Transistors (35) und mit dem Kondensator (37) des zur Vorrichtung zum Deaktivieren der Startschaltung gehörenden RC-Gliedes (36, 37) verbunden ist.
- Schaltungsanordnung nach den Ansprüchen 4 und 7, dadurch gekennzeichnet, dass das Mittel zur Aufrechterhaltung des deaktivierten Zustandes der Startschaltung bei eingeschalteter Spannungsversorgung für den Wechselrichter und nach dem Ansprechen der Abschaltungsvorrichtung aus einer elektrischen Verbindung zwischen der Spannungsversorgung des Wechselrichters und der Steuerelektrode des Transistors (35) besteht, die über den zur Vorrichtung zum Deaktivieren der Startschaltung gehörenden Schwellwertschalter (39) geführt ist.
- Schaltungsanordnung nach Anspruch 7, dadurch gekennzeichnet, dass die Schaltungsanordnung einen Transformator aufweist, dessen Primärwicklung (3) in einem Lastkreis des Wechselrichters angeordnet ist und der eine Sekundärwicklung (5) besitzt, die zur Ansteuerung des Transistors (35) dient.
- Schaltungsanordnung nach Anspruch 4, dadurch gekennzeichnet, dass ein Temperaturkompensationsglied vorgesehen ist, das mit dem Spannungseingang der Abschaltungsvorrichtung verbunden ist und das dazu dient, die Abschaltschwelle der Abschaltungsvorrichtung an die temperaturabhängige Änderung der Lampenbrennspannung anzupassen.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10100037A DE10100037A1 (de) | 2001-01-03 | 2001-01-03 | Schaltungsanordnung zum Betrieb von elektrischen Lampen |
| DE10100037 | 2001-01-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1223792A1 true EP1223792A1 (de) | 2002-07-17 |
| EP1223792B1 EP1223792B1 (de) | 2005-02-16 |
Family
ID=7669681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01129450A Expired - Lifetime EP1223792B1 (de) | 2001-01-03 | 2001-12-10 | EVG zum Betrieb von elektrischen Lampen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6525489B2 (de) |
| EP (1) | EP1223792B1 (de) |
| AT (1) | ATE289476T1 (de) |
| CA (1) | CA2366894A1 (de) |
| DE (2) | DE10100037A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2651195A1 (de) * | 2012-04-13 | 2013-10-16 | Helvar Oy Ab | Schaltung, Verfahren und Anordnung zum Betreiben einer selbstschwingenden Halbbrücke zur Versorgung einer Lampe mit Strom |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4060617B2 (ja) * | 2002-03-13 | 2008-03-12 | 株式会社小糸製作所 | 放電灯点灯回路 |
| DE102005028239A1 (de) * | 2005-06-17 | 2006-12-28 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungsanordnung und Verfahren zum Betrieb von Hochdruck-Entladungslampen |
| US7956550B2 (en) * | 2008-03-07 | 2011-06-07 | General Electric Company | Complementary application specific integrated circuit for compact fluorescent lamps |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5406177A (en) * | 1994-04-18 | 1995-04-11 | General Electric Company | Gas discharge lamp ballast circuit with compact starting circuit |
| EP0753987A1 (de) * | 1995-07-12 | 1997-01-15 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungansordnung zum Betrieb elektrischer Lampen und Betriebsverfahren für elektrische Lampen |
| US6137241A (en) * | 1996-08-08 | 2000-10-24 | Matsushita Electric Industrial Co., Ltd. | Starting switch circuit for a fluorescent lamp |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3611611A1 (de) | 1986-04-07 | 1987-10-08 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Schaltungsanordnung zum hochfrequenten betrieb einer niederdruckentladungslampe |
| DE4140557A1 (de) * | 1991-12-09 | 1993-06-17 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Schaltungsanordnung zum betrieb einer oder mehrerer niederdruckentladungslampen |
| DE4416401A1 (de) | 1994-05-09 | 1995-11-16 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Schaltungsanordnung zum Betreiben elektrischer Lampen |
| DE4425859A1 (de) * | 1994-07-21 | 1996-01-25 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Schaltungsanordnung zum Betrieb einer oder mehrerer Niederdruckentladungslampen |
| US5994848A (en) * | 1997-04-10 | 1999-11-30 | Philips Electronics North America Corporation | Triac dimmable, single stage compact flourescent lamp |
| ES2150751T3 (es) * | 1997-04-23 | 2000-12-01 | Magnetek Spa | Circuito de alimentacion para lamparas de descarga con proteccion de sobretension. |
| US5982159A (en) * | 1997-07-31 | 1999-11-09 | Philips Electronics North America Corporation | Dimmable, single stage fluorescent lamp |
| DE19819027A1 (de) * | 1998-04-29 | 1999-11-04 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Schaltungsanordnung zum Betrieb mindestens einer Entladungslampe |
| DE19909530A1 (de) * | 1999-03-04 | 2001-01-18 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Schaltungsanordnung zum Betrieb mindestens einer Hochdruckentladungslampe und Betriebsverfahren |
| US6144172A (en) * | 1999-05-14 | 2000-11-07 | Matsushita Electric Works R&D Laboratory, Inc. | Method and driving circuit for HID lamp electronic ballast |
-
2001
- 2001-01-03 DE DE10100037A patent/DE10100037A1/de not_active Withdrawn
- 2001-12-10 EP EP01129450A patent/EP1223792B1/de not_active Expired - Lifetime
- 2001-12-10 DE DE50105361T patent/DE50105361D1/de not_active Expired - Lifetime
- 2001-12-10 AT AT01129450T patent/ATE289476T1/de not_active IP Right Cessation
- 2001-12-26 US US10/025,474 patent/US6525489B2/en not_active Expired - Lifetime
-
2002
- 2002-01-02 CA CA002366894A patent/CA2366894A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5406177A (en) * | 1994-04-18 | 1995-04-11 | General Electric Company | Gas discharge lamp ballast circuit with compact starting circuit |
| EP0753987A1 (de) * | 1995-07-12 | 1997-01-15 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Schaltungansordnung zum Betrieb elektrischer Lampen und Betriebsverfahren für elektrische Lampen |
| US6137241A (en) * | 1996-08-08 | 2000-10-24 | Matsushita Electric Industrial Co., Ltd. | Starting switch circuit for a fluorescent lamp |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2651195A1 (de) * | 2012-04-13 | 2013-10-16 | Helvar Oy Ab | Schaltung, Verfahren und Anordnung zum Betreiben einer selbstschwingenden Halbbrücke zur Versorgung einer Lampe mit Strom |
| CN103379722A (zh) * | 2012-04-13 | 2013-10-30 | 赫尔瓦有限公司 | 用于对供应功率至灯的自振荡半桥进行操作的电路、方法和装置 |
| CN103379722B (zh) * | 2012-04-13 | 2017-06-30 | 赫尔瓦有限公司 | 用于对供应功率至灯的自振荡半桥进行操作的电路、方法和装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE289476T1 (de) | 2005-03-15 |
| EP1223792B1 (de) | 2005-02-16 |
| DE10100037A1 (de) | 2002-07-04 |
| DE50105361D1 (de) | 2005-03-24 |
| US6525489B2 (en) | 2003-02-25 |
| US20020140369A1 (en) | 2002-10-03 |
| CA2366894A1 (en) | 2002-07-03 |
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