EP1333707A1 - Elektronisches Vorschaltgerät für Gasentladungslampe - Google Patents
Elektronisches Vorschaltgerät für Gasentladungslampe Download PDFInfo
- Publication number
- EP1333707A1 EP1333707A1 EP03000735A EP03000735A EP1333707A1 EP 1333707 A1 EP1333707 A1 EP 1333707A1 EP 03000735 A EP03000735 A EP 03000735A EP 03000735 A EP03000735 A EP 03000735A EP 1333707 A1 EP1333707 A1 EP 1333707A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- switches
- electronic ballast
- control circuit
- inverter
- 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
- H05B41/288—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 and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/2881—Load circuits; Control thereof
- H05B41/2882—Load circuits; Control thereof the control resulting from an action on the static converter
- H05B41/2883—Load circuits; Control thereof the control resulting from an action on the static converter the controlled element being a DC/AC converter in the final stage, e.g. by harmonic mode starting
-
- 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
- H05B41/2825—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 by means of a bridge converter in the final stage
- H05B41/2828—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 by means of a bridge converter in the final stage using control circuits for the switching elements
-
- 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
- H05B41/295—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 and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
- H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2986—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against internal abnormal circuit conditions
Definitions
- the present invention relates to an electronic ballast for at least one Gas discharge lamp according to the preamble of claim 1 and a method to operate such a device.
- the invention is concerned with the Operations during the ignition of the gas discharge lamp.
- the entrance of a typical electronic ballast forms a connection to the power supply network connected high-frequency filter, which with a rectifier circuit connected is.
- the rectified by the rectifier circuit Supply voltage is a smoothing circuit to generate a DC link voltage supplied, one fed with the DC link voltage
- the inverter generates a high-frequency AC voltage, which is applied to the Load circuit with the gas discharge lamp connected to it is applied.
- the Operating with the high frequency AC voltage has a reduction in Electrode losses and an increase in light output result. There is also the possibility to light the lamps in a controlled and gentle manner.
- the present invention is therefore based on the object of being reliable Ignition of the lamp with an inductance reduced in volume bring about.
- the ignition current or the ignition voltage should be in one remain acceptable range to exclude damage to the ballast can.
- the object is further achieved by a method according to the invention.
- the premature opening of the switch means that the current switching period of the two switches of the inverter is shortened, which is equivalent to one higher instantaneous frequency. This allows a suitable choice of Reference values of operation in the non-linear area of the choke can be mastered.
- the switch is subsequently switched on again regularly, i.e. in the subsequent switching periods the previously set switch-on time for the two Switch or its operating frequency is maintained over a longer period Period of controlled operation in the limit area of the choke of the load circuit and ultimately enables the lamp to be ignited safely.
- the control circuit for monitoring the load circuit current preferably detects the via a resistor arranged at the base of the half bridge of the inverter falling voltage and compares it with a reference voltage. The The current is then monitored during the switch-on phase of the lower one Half bridge switch.
- the switches are preferably MOS field effect transistors, whose gates by means of the control circuit pulse width modulated signals can be controlled.
- that can Ballast have an additional safety circuit, which in the case of late opening of the switch and thus uncontrollable voltage peaks Inverters completely shut down for a temporary period. For this the control circuit also monitors the lamp voltage and compares it this with a further predetermined limit value.
- the essential components of the present invention are in the circuit diagram in Fig. 1 shown.
- the further elements of the Ballast - for example, the rectifier and the smoothing circuit - are already well known and will therefore not be explained in more detail below.
- the inverter is formed by a half bridge made up of two series-connected electronic switches Q1 and Q2. These switches Q1, Q2 can be formed, for example, by two MOS field effect transistors.
- the base of the half-bridge is connected to ground via a shunt resistor R1, while the DC voltage U BUS is present at the input of the half-bridge, which can be generated, for example, by shaping the mains voltage using a combination of radio interference suppressor and rectifier.
- any other DC voltage source can also be present on the half bridge.
- the Gas discharge lamp LA which is preferably a fluorescent lamp acts, contained load circuit connected.
- This consists of one Series resonance circuit, which consists of a choke L1 and a resonance capacitor C1 composed.
- a series circuit consisting of a coupling capacitor C2 and the gas discharge lamp LA connected in such a way that they are parallel to the Resonance capacitor C1 is.
- the two switches Q1, Q2 of the inverter are activated by a Control circuit 1, the control signals to the gates of the two field effect transistors Q1 and Q2 transmitted.
- a clock pattern for the two switches Q1, Q2 is shown in Fig. 2a.
- a switching period begins when the upper switch Q1 of the half-bridge is switched on or closed for a specific switch-on time t on , the term “closing” when using field-effect transistors means that these are switched through.
- the switch Q1 is opened again or the transistor is blocked and the switch Q2 is alternately closed.
- a predetermined delay time t d is waited between the opening of the switch Q1 and the subsequent closing of the switch Q2 in order to avoid a simultaneous closing of the two switches Q1, Q2 and thus a short circuit of the inverter in any case.
- the second switch Q2 is also closed for the switch-on time t on and then opened again. After waiting again for the delay time t d , the upper switch Q1 is closed again, thus ending a complete switching period.
- T p 2 ⁇ ( t on + t d )
- the electrodes of the Lamp LA preheated which is done by having a AC voltage is applied at a frequency that is significantly above that Resonance frequency of the load circuit is.
- the resulting tension is then too low to cause the LA lamp to ignite.
- the ignition of the lamp LA is initiated, which is done by gradually increasing the switch-on time t on for the two switches Q1, Q2 of the inverter and accordingly reducing the operating frequency of the inverter.
- the frequency then approaches ever closer to the resonance frequency of the load circuit until the resulting voltage is so great that it causes the gas discharge lamp LA to ignite.
- a high current can occur in the load circuit before the lamp LA is ignited, which has the consequence that the inductor L1 no longer acts linearly and consequently high current and voltage peaks occur.
- the control circuit 1 monitors the level of the current supplied to the load circuit during the switch-on phase of the lower switch Q2. For this purpose, it detects the voltage drop across the shunt resistor R1 and feeds it to a comparator 2, which compares it with a reference voltage V ref1 .
- This voltage V ref1 is selected such that the maximum current is sufficient on the one hand to ensure reliable ignition and on the other hand excessive current loads are avoided, in particular if the choke is operated in saturation.
- the reaction of the control circuit 1 to a state in which the voltage drop across the resistor R1 exceeds the reference value V ref1, that is to say the current supplied to the load circuit exceeds the maximum current of the inductor L1, is shown in FIG. 2b.
- the first half of the switching period corresponds to the timing diagram shown in FIG. 2a for the uncontrolled case, since in the present example the monitoring described below only takes place during the switch-on phase of the lower switch Q2.
- the upper switch Q1 is thus closed for the switch-on time t on currently set by the control circuit 1, and then the lower switch Q2 is closed after opening the switch Q1 and waiting for the delay time t d .
- the voltage U R1 dropping across the shunt resistor R1 rises continuously, as shown in the upper area of FIG. 2. This is monitored by the control circuit 1. As soon as the measurement voltage U R1 exceeds the reference voltage V ref1 , a pulse P occurs at the output of the comparator 2, which causes the control circuit 1 to switch off the switch Q2 after a system-related response time t r . The switch-on time t ' on of the lower switch Q2 is thus reduced compared to the switch-on time t on of the upper switch Q1. After waiting for the delay time t d , the first switch Q1 then becomes normal again, that is, it is switched on and off again for the previously defined switch-on time t on .
- the first two steps 100 and 101 of the method consist in that the upper switch Q1 is switched on and is switched off again normally after the switch-on time has elapsed.
- the lower switch Q2 is switched on in step 103.
- the switch-on time of the switch Q2 it is continuously checked whether the reference voltage V ref1 has been reached (step 104). If this is not the case, then an internal count value R of the control circuit 1 is increased by (step 105) and the switch Q2 is regularly switched off (step 106).
- Increasing the count value R in step 105 results in an increase in the switch-on time t on for the two switches Q1 and Q2. This is because the switch-on time is derived from the count value R, for example by an internal counter of the control circuit 1 counting up to the value R.
- t on R ⁇ T cl
- T cl corresponds to the duration of the base clock of an internal timer of the control circuit 1.
- step 107 the switch Q2 is immediately switched off (step 107) and the delay time is waited for in step 108 before the switch Q1 is switched on again. In this case, the count R and thus the on-time for the two switches Q1 and Q2 are no longer increased, which, as explained above, has the result that controlled operation of the throttle is realized.
- the Count R does not have to be increased with every pass. For example, a Increase the count R only every third or fifth pass depending on how fast the frequency of the inverter during the Ignition operation should be reduced.
- FIG. 4 An extended variant of the circuit according to the invention is therefore shown in FIG. 4, in which the lamp voltage is additionally monitored.
- the voltage drop across the lamp LA is fed here to a further comparator 3, which compares it with a further reference value V ref2 . If the lamp voltage exceeds this second reference value V ref2 , the control circuit 1 switches the inverter off completely for a short period of time in order to avoid damage to the entire circuit arrangement.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
- Fig. 1
- ein erstes Ausführungsbeispiel einer Schaltungsanordnung für das erfindungsgemäße Vorschaltgerät;
- Fig. 2a
- ein Taktschema der beiden Schalter des Wechselrichters für den Fall, dass die erfindungsgemässe Regelung inaktiv, d.h. ein Referenzwert noch nicht überschritten ist;
- Fig. 2b
- ein Taktschema der beiden Schalter, für den Fall, dass die erfindungsgemässe Regelung aktiv, d.h. der Referenzwert bereits überschritten ist;
- Fig. 3
- ein Flussdiagramm des erfindungsgemäßen Verfahrens; und
- Fig. 4
- eine Erweiterung der in Fig. 1 dargestellten Schaltungsanordnung.
Claims (12)
- Elektronisches Vorschaltgerät für mindestens eine Gasentladungslampe, vorzugsweise für eine Leuchtstofflampe (LA), mit einem mit einer Gleichspannungsquelle (UBUS) verbundenen Wechselrichter sowie einem an den Wechselrichter angeschlossenen Lastkreis, der die Lampe (LA) und einen Serienresonanzkreis aufweist,
wobei der Wechselrichter durch zwei in einer Halbbrückenanordnung angeordnete Schalter (Q1, Q2) gebildet ist, die von einer Steuerschaltung (1) während einer Zündphase derart alternierend angteuerbar sind, dass ihre Einschaltzeit (ton) schrittweise erhöht wird,
dadurch gekennzeichnet, dass die Steuerschaltung (1) während der Einschaltzeit eines der beiden Schalter (Q1, Q2) die Höhe des dem Lastkreis zugeführten Stromes überwacht und für den Fall, dass der Strom einen vorgegebenen Referenzwert überschreitet, den Schalter (Q1, Q2) vorzeitig öffnet und dann regulär wieder einschaltet. - Elektronisches Vorschaltgerät nach Anspruch 1,
dadurch gekennzeichnet, dass der vorgegebene Referenzwert so eingestellt ist, dass eine in dem Serienresonanzkreis enthaltene Drossel (L1) in Sättigung betrieben ist. - Elektronisches Vorschaltgerät nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Steuerschaltung (1) zum Überwachen des Stromes die über einen am Fußpunkt der Halbbrücke angeordneten Widerstand (R1) abfallende Spannung (UR1) erfasst und mit einer Referenzspannung (Vref1) vergleicht. - Elektronisches Vorschaltgerät nach Anspruch 3,
dadurch gekennzeichnet, dass die Steuerschaltung (1) die Höhe des dem Lastkreis zugeführten Stromes während der Einschaltzeit des unteren Schalters (Q2) der Halbbrücke überwacht. - Elektronisches Vorschaltgerät nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Steuerschaltung (1) zwischen dem Ausschalten eines der beiden Schalter (Q1, Q2) und dem darauffolgenden Einschalten des anderen Schalter (Q1, Q2) eine vorgegebene Verzögerungszeit (td) abwartet. - Elektronisches Vorschaltgerät nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass es sich bei den beiden Schaltern um Feldeffekttransistoren (Q1, Q2) handelt. - Elektronisches Vorschaltgerät nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass die Steuerschaltung (1) die beiden Schalter (Q1, Q2) mittels Impulssignalen ansteuert. - Elektronisches Vorschaltgerät nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass die Steuerschaltung (1) ferner auch die an der Lampe (LA) anliegende Spannung überwacht und für den Fall, dass diese einen vorgegebenen weiteren Referenzwert (Vref2) überschreitet, den Wechselrichter verübergehend ausschaltet. - Elektronisches Vorschaltgerät nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass die Steuerschaltung (1) vor der Zündphase den Lastkreis in einem Vorheizbetrieb zum Heizen der Lampenelektroden ansteuert. - Elektronisches Vorschaltgerät nach eine mder vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Steuerschaltung (1) die Einschaltzeit (tON) erst erhöht, wenn die Schalter (Q1, Q2) das Taktschema mehrfach durchlaufen haben. - Verfahren zum Betrieb eines elektronisches Vorschaltgerät für mindestens eine Gasentladungslampe, vorzugsweise für eine Leuchtstofflampe (LA), mit einem mit einer Gleichspannungsquelle (UBUS) verbundenen Wechselrichter sowie einem an den Wechselrichter angeschlossenen Lastkreis, der die Lampe (LA) und einen Serienresonanzkreis aufweist,
wobei der Wechselrichter durch zwei in einer Halbbrückenanordnung angeordnete Schalter (Q1, Q2) gebildet ist, die während einer Zündphase derart alternierend angesteuert werden, dass ihre Einschaltzeit (ton) schrittweise erhöht wird,
dadurch gekennzeichnet, dass während der Einschaltzeit eines der beiden Schalter (Q1, Q2) die Höhe des dem Lastkreis zugeführten Stromes überwacht und für den Fall, dass der Strom einen vorgegebenen Referenzwert überschreitet, der Schalter (Q1, Q2) vorzeitig geöffnet und dann regulär wieder eingeschaltet wird. - Verfahren nach Anspruch 11,
dadurch gekennzeicnet,
dadurch gekennzeichnet, dass eine in dem Serienresonanzkreis enthaltene Drossel (L1) durch entsprechende Wahl des Referenzwerts in Sättigung betrieben wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10204044 | 2002-02-01 | ||
DE10204044A DE10204044A1 (de) | 2002-02-01 | 2002-02-01 | Elektronisches Vorschaltgerät für Gasentladungslampe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1333707A1 true EP1333707A1 (de) | 2003-08-06 |
EP1333707B1 EP1333707B1 (de) | 2006-08-02 |
Family
ID=7713522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03000735A Expired - Lifetime EP1333707B1 (de) | 2002-02-01 | 2003-01-13 | Elektronisches Vorschaltgerät für Gasentladungslampe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1333707B1 (de) |
AT (1) | ATE335387T1 (de) |
DE (3) | DE10204044A1 (de) |
Cited By (6)
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---|---|---|---|---|
DE102006061357A1 (de) * | 2006-12-22 | 2008-06-26 | Infineon Technologies Austria Ag | Verfahren zur Ansteuerung einer Leuchtstofflampe |
WO2008119613A1 (en) * | 2007-03-30 | 2008-10-09 | Osram Gesellschaft mit beschränkter Haftung | Method of ignition regulation of discharge lamp and the corresponding electronic ballast circuit |
EP2124510A1 (de) | 2008-05-16 | 2009-11-25 | Infineon Technologies Austria AG | Verfahren zur Ansteuerung einer Leuchtstofflampe und Lampenvorschaltgerät |
WO2010076735A1 (en) * | 2008-12-31 | 2010-07-08 | Nxp B.V. | Method of igniting a lamp, controller for a lamp, and a lamp controlled by a controller |
US7982452B2 (en) | 2009-07-30 | 2011-07-19 | Infineon Technologies Austria Ag | Detection of a load state of a half-bridge |
WO2013007727A3 (en) * | 2011-07-11 | 2013-04-04 | Tridonic Gmbh & Co Kg | Electronic ballast for a lamp |
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US7266725B2 (en) | 2001-09-03 | 2007-09-04 | Pact Xpp Technologies Ag | Method for debugging reconfigurable architectures |
DE19651075A1 (de) | 1996-12-09 | 1998-06-10 | Pact Inf Tech Gmbh | Einheit zur Verarbeitung von numerischen und logischen Operationen, zum Einsatz in Prozessoren (CPU's), Mehrrechnersystemen, Datenflußprozessoren (DFP's), digitalen Signal Prozessoren (DSP's) oder dergleichen |
DE19654595A1 (de) | 1996-12-20 | 1998-07-02 | Pact Inf Tech Gmbh | I0- und Speicherbussystem für DFPs sowie Bausteinen mit zwei- oder mehrdimensionaler programmierbaren Zellstrukturen |
ATE243390T1 (de) | 1996-12-27 | 2003-07-15 | Pact Inf Tech Gmbh | Verfahren zum selbständigen dynamischen umladen von datenflussprozessoren (dfps) sowie bausteinen mit zwei- oder mehrdimensionalen programmierbaren zellstrukturen (fpgas, dpgas, o.dgl.) |
US6542998B1 (en) | 1997-02-08 | 2003-04-01 | Pact Gmbh | Method of self-synchronization of configurable elements of a programmable module |
US8686549B2 (en) | 2001-09-03 | 2014-04-01 | Martin Vorbach | Reconfigurable elements |
DE19861088A1 (de) | 1997-12-22 | 2000-02-10 | Pact Inf Tech Gmbh | Verfahren zur Reparatur von integrierten Schaltkreisen |
CN1378665A (zh) | 1999-06-10 | 2002-11-06 | Pact信息技术有限公司 | 编程概念 |
EP1342158B1 (de) | 2000-06-13 | 2010-08-04 | Richter, Thomas | Pipeline ct-protokolle und -kommunikation |
US8058899B2 (en) | 2000-10-06 | 2011-11-15 | Martin Vorbach | Logic cell array and bus system |
US9037807B2 (en) | 2001-03-05 | 2015-05-19 | Pact Xpp Technologies Ag | Processor arrangement on a chip including data processing, memory, and interface elements |
US7844796B2 (en) | 2001-03-05 | 2010-11-30 | Martin Vorbach | Data processing device and method |
US7444531B2 (en) | 2001-03-05 | 2008-10-28 | Pact Xpp Technologies Ag | Methods and devices for treating and processing data |
AU2002347560A1 (en) | 2001-06-20 | 2003-01-02 | Pact Xpp Technologies Ag | Data processing method |
US7996827B2 (en) | 2001-08-16 | 2011-08-09 | Martin Vorbach | Method for the translation of programs for reconfigurable architectures |
US7434191B2 (en) | 2001-09-03 | 2008-10-07 | Pact Xpp Technologies Ag | Router |
US8686475B2 (en) | 2001-09-19 | 2014-04-01 | Pact Xpp Technologies Ag | Reconfigurable elements |
AU2003208266A1 (en) | 2002-01-19 | 2003-07-30 | Pact Xpp Technologies Ag | Reconfigurable processor |
AU2003214003A1 (en) | 2002-02-18 | 2003-09-09 | Pact Xpp Technologies Ag | Bus systems and method for reconfiguration |
US8914590B2 (en) | 2002-08-07 | 2014-12-16 | Pact Xpp Technologies Ag | Data processing method and device |
US7657861B2 (en) | 2002-08-07 | 2010-02-02 | Pact Xpp Technologies Ag | Method and device for processing data |
WO2004021176A2 (de) | 2002-08-07 | 2004-03-11 | Pact Xpp Technologies Ag | Verfahren und vorrichtung zur datenverarbeitung |
AU2003289844A1 (en) | 2002-09-06 | 2004-05-13 | Pact Xpp Technologies Ag | Reconfigurable sequencer structure |
EP1676208A2 (de) | 2003-08-28 | 2006-07-05 | PACT XPP Technologies AG | Datenverarbeitungseinrichtung und verfahren |
WO2007082730A1 (de) | 2006-01-18 | 2007-07-26 | Pact Xpp Technologies Ag | Hardwaredefinitionsverfahren |
DE102008023603A1 (de) * | 2008-05-14 | 2009-11-19 | Hella Kgaa Hueck & Co. | Vorschaltgerät für Gasentladungslampen für den Betrieb an einer Gleichspannung |
FI121561B (fi) | 2009-06-30 | 2010-12-31 | Helvar Oy Ab | Elektronisen liitäntälaitteen toimintojen säätäminen ja mittaaminen |
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US4060751A (en) * | 1976-03-01 | 1977-11-29 | General Electric Company | Dual mode solid state inverter circuit for starting and ballasting gas discharge lamps |
GB2052896A (en) * | 1979-06-13 | 1981-01-28 | Gen Electric | Lighting unit and circuit |
US4587463A (en) * | 1983-09-22 | 1986-05-06 | Isco, Inc. | Absorbance monitor |
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US6037722A (en) * | 1994-09-30 | 2000-03-14 | Pacific Scientific | Dimmable ballast apparatus and method for controlling power delivered to a fluorescent lamp |
-
2002
- 2002-02-01 DE DE10204044A patent/DE10204044A1/de not_active Withdrawn
- 2002-02-01 DE DE20221985U patent/DE20221985U1/de not_active Expired - Lifetime
-
2003
- 2003-01-13 EP EP03000735A patent/EP1333707B1/de not_active Expired - Lifetime
- 2003-01-13 DE DE50304410T patent/DE50304410D1/de not_active Expired - Lifetime
- 2003-01-13 AT AT03000735T patent/ATE335387T1/de active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US4060751A (en) * | 1976-03-01 | 1977-11-29 | General Electric Company | Dual mode solid state inverter circuit for starting and ballasting gas discharge lamps |
GB2052896A (en) * | 1979-06-13 | 1981-01-28 | Gen Electric | Lighting unit and circuit |
US4587463A (en) * | 1983-09-22 | 1986-05-06 | Isco, Inc. | Absorbance monitor |
US6037722A (en) * | 1994-09-30 | 2000-03-14 | Pacific Scientific | Dimmable ballast apparatus and method for controlling power delivered to a fluorescent lamp |
US5925990A (en) * | 1997-12-19 | 1999-07-20 | Energy Savings, Inc. | Microprocessor controlled electronic ballast |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8497640B2 (en) | 2006-12-22 | 2013-07-30 | Infineon Technologies Austria Ag | Method for operating a fluorescent lamp |
DE102006061357B4 (de) * | 2006-12-22 | 2017-09-14 | Infineon Technologies Austria Ag | Verfahren zur Ansteuerung einer Leuchtstofflampe |
US7990073B2 (en) | 2006-12-22 | 2011-08-02 | Infineon Technologies Austria Ag | Method for operating a fluorescent lamp that is connected to a series resonant circuit |
DE102006061357A1 (de) * | 2006-12-22 | 2008-06-26 | Infineon Technologies Austria Ag | Verfahren zur Ansteuerung einer Leuchtstofflampe |
US8344640B2 (en) | 2006-12-22 | 2013-01-01 | Infineon Technologies Austria Ag | Method for operating a fluorescent lamp |
WO2008119613A1 (en) * | 2007-03-30 | 2008-10-09 | Osram Gesellschaft mit beschränkter Haftung | Method of ignition regulation of discharge lamp and the corresponding electronic ballast circuit |
CN101277571B (zh) * | 2007-03-30 | 2014-02-12 | 电灯专利信托有限公司 | 放电灯的点燃控制方法及相应的电子镇流器电路 |
EP2124510A1 (de) | 2008-05-16 | 2009-11-25 | Infineon Technologies Austria AG | Verfahren zur Ansteuerung einer Leuchtstofflampe und Lampenvorschaltgerät |
US8242702B2 (en) | 2008-05-16 | 2012-08-14 | Infineon Technologies Austria Ag | Method for driving a fluorescent lamp, and lamp ballast |
CN102318446A (zh) * | 2008-12-31 | 2012-01-11 | Nxp股份有限公司 | 灯的点火方法、用于灯的控制器以及由控制器控制的灯 |
WO2010076735A1 (en) * | 2008-12-31 | 2010-07-08 | Nxp B.V. | Method of igniting a lamp, controller for a lamp, and a lamp controlled by a controller |
US7982452B2 (en) | 2009-07-30 | 2011-07-19 | Infineon Technologies Austria Ag | Detection of a load state of a half-bridge |
WO2013007727A3 (en) * | 2011-07-11 | 2013-04-04 | Tridonic Gmbh & Co Kg | Electronic ballast for a lamp |
Also Published As
Publication number | Publication date |
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EP1333707B1 (de) | 2006-08-02 |
DE10204044A1 (de) | 2003-08-14 |
ATE335387T1 (de) | 2006-08-15 |
DE20221985U1 (de) | 2010-03-04 |
DE50304410D1 (de) | 2006-09-14 |
DE10204044A8 (de) | 2004-07-08 |
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