EP1330945B1 - Elektronisches vorschaltgerät mit vollbrückenschaltung - Google Patents
Elektronisches vorschaltgerät mit vollbrückenschaltung Download PDFInfo
- Publication number
- EP1330945B1 EP1330945B1 EP01974243A EP01974243A EP1330945B1 EP 1330945 B1 EP1330945 B1 EP 1330945B1 EP 01974243 A EP01974243 A EP 01974243A EP 01974243 A EP01974243 A EP 01974243A EP 1330945 B1 EP1330945 B1 EP 1330945B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- lamp
- voltage
- bridge
- electronic ballast
- 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.)
- Expired - Lifetime
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Classifications
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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
- 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
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/39—Controlling the intensity of light continuously
- H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
-
- 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
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/39—Controlling the intensity of light continuously
- H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
- H05B41/3927—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation
Definitions
- the present invention relates to an electronic ballast with a Full bridge circuit for controlling the performance and brightness of a Gas discharge lamp according to the preamble of claim 1 and a method for Control of the brightness of a gas discharge lamp.
- Electronic ballasts with full bridge circuits are preferably used for Operating high pressure gas discharge lamps used, but also for Low-pressure discharge lamps or fluorescent tubes use. It offers the Using a full bridge circuit the possibility of the lamps with one - if necessary with Low frequency reverse polarity - to operate DC, thereby causing the emergence of disturbing alternating electromagnetic fields can be reduced. Femer is in In this case, the influence of the high frequency line impedances Lamp wiring on the operation negligible. Ballasts with Full bridge circuits are described for example in DE 44 01 630 A1 or AT 392 384 B described.
- the full bridge circuit is formed by four controllable switches S1 to S4, which in the present example are field-effect transistors, wherein the two first switches Slund S2 form a first half-bridge and the two switches S3 and S4 form a second half-bridge.
- a series resonant circuit consisting of an inductance L and a capacitor C is arranged in its diagonal branch, ie the series connection of the inductance L and the capacitor C connects the common node between the two switches S1 and S2 of the first half-bridge to the common node between the two switches S3 and S4 of the second half-bridge.
- Parallel to the capacitor C the gas discharge lamp LA is arranged.
- the input of the full bridge circuit is supplied with a DC voltage U BUS , the output of the full bridge circuit is connected via a resistor R to ground.
- the four switches S1 to S4 are actuated by two driver circuits T1 and T2, to which in turn are transmitted by a control circuit 6, the corresponding control commands for driving the switches S1 to S4.
- the four switches S1 to S4 are generally activated in the following way: First, in a first phase, the switches S1 and S4 forming a first bridge diagonal are activated, while the two switches S3 and S2 forming the second bridge diagonal are opened. In this first phase, there is a current flow from the input of the full bridge circuit via the first switch, the load circuit consisting of the series resonant circuit and the gas discharge lamp LA and the switch S4. In this case, one of the two switches, for example, the switch S1 is permanently closed, while the switch S4 is clocked high-frequency.
- the power supplied to the lamp LA is increased or reduced by changing the duty cycle.
- the switches S1 and S4 of the first bridge diagonal are opened, while now the switches S3 and S2 of the second bridge diagonal are activated in an analogous manner, ie the switch S3 is permanently closed, while the switch S2 with one of the desired power corresponding Duty cycle clocked high frequency.
- the change between the two bridge diagonals causes the direction of the current through the lamp LA to change permanently, thereby avoiding mercury deposits on an electrode and increasing the life of the lamp.
- control circuit 6 which, on the one hand, supplies the setpoint value I SOLL corresponding to the desired lamp brightness and, on the other hand, the voltage dropped across the shunt resistor R via the input line 7 as the actual value.
- the control circuit 6 According to the comparison result between the actual value and the setpoint, the control circuit 6 generates control commands which are supplied via the lines 8 1 to 8 4 to the two driver circuits T1 and T2, which in turn convert the control commands into corresponding signals for driving the gates of the four field effect transistors S1 to S4.
- the clocked switch of each active bridge diagonal is at a frequency from about 20 to 50 kHz open and closed. Because of this high frequency clocking parasitic currents flow across the lamp line capacitances giving an accurate Control of lamp brightness is impossible, especially at very low dimming levels with the result that at very low dimming levels an undesirable, for the Eye noticeable flicker of lamp brightness occurs.
- Another circuit for driving is known from EP 0 633 711 A1.
- the circuit has a full bridge circuit to which the lamp is under load is switched.
- the control of the lamp brightness does not take place now a variation of the drive frequency, but by controlling the the Full bridge circuit supplied power.
- a controllable constant current source in the form of a transistor arranged, which is controlled by a control circuit in an appropriate manner.
- the Switching elements of the full bridge circuit in this case only so controlled, which takes place a regular change in direction of the current flow.
- an electronic ballast with indicate a full bridge circuit, which is a dimming of the gas discharge lamp over a very wide range. In particular flicker phenomena should be added very low dimming values are avoided.
- the object is achieved by an electronic ballast, which has the characteristics of Claim 1, and by methods for controlling the brightness of a Gas discharge lamp according to claim 11 solved.
- the inventive electronic Ballast has a full bridge circuit fed with a DC voltage, wherein the gas discharge lamp is connected as a load of this full bridge circuit.
- a Control circuit switches alternately a bridge diagonal of Full bridge on and the other bridge diagonal off.
- the two bridge diagonals each have a controllable Constant current source for controlling the lamp current have. In this case can during the turn-on of a bridge diagonal on a high frequency clocking a Switch be waived.
- a controllable smoothing circuit for generating one of the full bridge circuit supplied variable DC voltage.
- a control circuit is provided, which via the controllable constant current source of each active bridge diagonal detected falling voltage and controls the smoothing circuit such that it detected Voltage substantially corresponds to a predetermined setpoint.
- the smoothing circuit consists of two series-connected switching regulators, the first switching regulator preferably a boost converter and the second switching regulator preferably a buck converter.
- the control circuit controls only the Step-down converter in the desired manner.
- the Smoothing circuit also by a controlled by the control circuit Buck Boost Converter be formed.
- a second preferred embodiment of the inventive electronic Ballast is that the gas discharge lamp part of a load as the Full bridge circuit switched resonant circuit is.
- a first mode of operation which is used at low lamp brightness, the regulation of the Lamp current as previously described by the two controllable constant current sources the bridge diagonal, wherein the inductance in this case due to the direct current is not effective, but only their ohmic DC resistance.
- the control of the lamp takes place supplied power by changing the duty cycle at a constant high Frequency. That is, in this second operating mode, the regulation of the Lamp current is suppressed by the controllable constant current sources and it takes place turn a pure clocking the switch. In this case it is not necessary that one Control of the supplied from the smoothing circuit of the full bridge circuit DC voltage occurs because the controllable DC voltage only at the lower Lamp brightness is used, but here due to the low Amperage the losses play a minor role anyway.
- the current through the Gas discharge lamp through one of the corresponding bridge diagonal respectively assigned adjustable constant current source regulated.
- the two above operating modes come to Use, wherein the gas discharge lamp in the first operating mode at low Lamp brightness with a regulated DC voltage and in a second Operating mode at high lamp brightness with a duty cycle corresponding DC is operated with superimposed Rippelstrom.
- the arrangement of the four field effect transistors S1 to S4 of the full bridge shown in Fig. 1 is identical to the known arrangement of Fig. 6. Again, a DC voltage U BUS is applied to the input of the full bridge circuit, the output of the full bridge circuit forms a ground connected shunt Resistor R. As a load, however, now only the gas discharge lamp LA is switched, the elements of a resonant circuit are no longer present in the first embodiment. Switching between the two bridge diagonals is again effected by the two driver circuits T1 and T2, which drive the four field-effect transistors S1 to S4 in a suitable manner.
- the regulation of the lamp brightness is no longer effected by a corresponding switching on and off of the switches S1 to S4 by the driver circuits T1 and T2, but by driving the arranged in the bridge diagonal field effect transistors S2 and S4 as controllable constant current sources.
- these two field-effect transistors S2, S4 are each operated by an operational amplifier OP1 or OP2 in their modulation range. They thus form a resistor which is connected in series with the lamp LA and defines in this way an operating point for the lamp LA.
- the controllable constant current sources are therefore formed by the two lower field effect transistors S2 and S4 of the two half bridges and the two operational amplifiers OP1 and OP2, each controlling the respective field effect transistors S2 and S4.
- the current flowing through the respective field effect transistor S2 or S4 is supplied to the operational amplifier OP1, OP2 as an actual value via a feedback line 9 1 or 9 2 , the second input signal forms a setpoint value I SOLL corresponding to the desired lamp brightness, for example the two operational amplifiers OP1, OP2 can be supplied by a dimming circuit or the like.
- the two operational amplifiers OP1 and OP2 act as regulators which set the current flowing through the two field effect transistors S2 and S4, respectively, to a value corresponding to the desired value I SOLL .
- the two driver circuits T1 and T2 are used to switch between the two bridge diagonals required control commands in the usual way by a (not shown) supplied control circuit. Again, there is a low frequency Switch between the two bridge diagonals, around which in a one-sided DC operation resulting mercury migration in the lamp LA to reduce.
- the ballast further comprises a control circuit 1, which is supplied via the two input lines 10 1 and 10 2, the voltage drop across the field effect transistor S2 or S4 of the active bridge diagonal voltage as an actual value.
- This actual value is compared with a setpoint I FETsoll , which corresponds to the value that allows a particularly effective current control.
- the control circuit 1 generates a control signal, which is used to control the DC voltage U BUS .
- Fig. 2 shows the block diagram of a ballast.
- the input of the ballast forms a connected to an AC voltage source rectifier circuit 11, for example, a full-bridge rectifier, which supplies a rectified AC voltage U 0 to a first switching regulator 3.
- This first switching regulator 3 is formed by a step-up converter, which generates a high intermediate circuit voltage U Z , which is supplied to a second switching regulator 4.
- This second switching regulator 4 is a buck converter, which reduces the high intermediate circuit voltage U Z to the required lower value for the DC voltage U BUS .
- the reference numeral 2 designates the full bridge circuit shown in FIG.
- Fig. 2 controls the control circuit 1 to the buck converter 4, in a manner such that this generates a DC voltage U BUS , which is as intended only just above the lamp voltage LA, so that via the two transistors S2 or S4 falling voltage to the setpoint U FETsoll corresponds.
- U BUS DC voltage
- the smoothing circuit for generating the DC voltage U BUS is not generated by two series-connected switching regulator, but by a buck-boost converter 5 in which the functions of the switching regulator 3 and 4 shown in Fig. 2 are combined in a circuit.
- This integration is possible because the demands on the control speed of the smoothing circuit are relatively low and thus is not to fear the generation of harmonics at the input of the ballast due to rapid changes in frequency and / or duty cycle.
- the inventive control of the lamp current through the two controllable Constant current sources has in addition to the suppression of flicker phenomena also to Result that when turning on the lamp LA at low lamp brightness no Lightning can occur because of the current due to the two controllable constant current sources is limited to the desired value from the beginning.
- the buck converter 4 or the buck-boost converter is so controlled that he has a maximum output voltage, which for the ignition is sufficient, provides.
- Another possibility is to use a Ignition coil.
- the electronic ballast according to the invention it is possible to dim and increase the gas discharge lamp to 1/1000 of its maximum brightness ignite, without causing a flickering or a switch-on occurs. It is also advantageous that the lamp wiring has no influence on the dimming operation Has. This is because, as before, switching to a low frequency However, the high frequency clocking of switches is omitted and thus by this "quasi-DC" is no influence of the wiring impedances.
- the low frequency Umpolfrequenz, i. the change between the two Brückendiagonalen should be at least slightly above the frequency of the Eye is still perceived, so at least above 100 Hz. Especially Advantageously, a frequency between 700 Hz and 2000 Hz is selected.
- FIG. 5 A second embodiment of the full bridge circuit according to the invention is shown in FIG. This differs, on the one hand, in that the gas discharge lamp LA is now in turn part of a resonant circuit consisting of an inductance L and a capacitor C, which is connected as a load of the full bridge circuit, and, secondly, that the regulator 1 described in FIG is dispensed with for controlling the DC voltage U BUS .
- the full bridge circuit 2 is supplied with a constant DC voltage U BUS , as shown schematically in FIG. 5.
- the electronic ballast shown in this figure 5 now has the rectifier circuit, a boost converter 3 and the full bridge circuit 2.
- the two controllable constant current sources consisting of the operational amplifiers OP1 and OP2 and the associated field effect transistors S2 and S4 are provided. Due to the constant DC voltage U BUS , however, there is now the danger that at high lamp currents, ie at high brightness, the power loss resulting from the two transistors S2 and S4 increases to an impermissible level.
- the function of the two controllable constant current sources is suppressed and the four transistors S1 to S4 are controlled as well as in the known method shown in Fig. 6. That is, with a relatively low frequency is changed between the two bridge diagonals, being clocked at high frequency during the turn-on of a bridge diagonal of one of the two transistors, so that the lamp with a direct current, which is superimposed on a high-frequency ripple current is operated.
- the inductance L forms in this mode, the current-limiting impedance in series with the lamp.
- the control circuit 6 is again responsible for the control of the lamp brightness and transmits via the lines 8 1 to 8 4 the corresponding control commands to the driver circuits T1 and T2, which accordingly drive the four transistors S1 to S4.
- the Line capacitances and line inductances despite the high switching frequency no Role because they are negligible relative to the lamp current and therefore the Do not disturb the control processes. Also, the risk of the appearance of flickering is not given at these high brightnesses.
- the ideal due to the current control ignition behavior, with the occurrence is suppressed by flashes of light. Again, dimming is up to 1/1000 of the maximum lamp brightness possible.
- the inventive concept is thus characterized by the fact that a. lamp is realized, with a dimming over a very wide range of brightness is possible. In addition, the possibility exists, the lamp even at very Low brightness values to start without uncomfortable flashes of light arise.
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- Circuit Arrangements For Discharge Lamps (AREA)
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Description
Claims (16)
- Elektronisches Vorschaltgerät zum Steuern des Betriebsverhaltens und der Helligkeit einer Gasentladungslampe (LA), mit einer mit Gleichspannung (UBUS) gespeisten Vollbrückenschaltung,
wobei die Gasentladungslampe (LA) als Last der Vollbrückenschaltung geschaltet ist und eine Steuerschaltung (T1, T2) abwechselnd jeweils eine Brückendiagonale einschaltet und die andere Brückendiagonale der Vollbrücke ausschaltet,
dadurch gekennzeichnet, dass die beiden Brückendiagonalen jeweils eine regelbare Konstantstromquelle (OP1, OP2, S2, S4) zur Regelung des Lampenstroms aufweisen. - Elektronisches Vorschaltgerät nach Anspruch 1,
dadurch gekennzeichnet, dass der von der Steuerschaltung (T1, T2) durchgeführte Wechsel zwischen den beiden Brückendiagonalen mit einer Frequenz von mehr als 100 Hz erfolgt. - Elektronisches Vorschaltgerät nach Anspruch 2,
dadurch gekennzeichnet, dass der von der Steuerschaltung (T1, T2) durchgeführte Wechsel zwischen den beiden Brückendiagonalen mit einer Frequenz zwischen 700 Hz und 2000 Hz erfolgt. - Elektronisches Vorschaltgerät nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass bei einem Lampenbetrieb bei niedriger Helligkeit lediglich eine einzige Brückendiagonale eingeschaltet ist. - Elektronisches Vorschaltgerät nach einem der vorherigen Ansprüche,
gekennzeichnet durch
eine mit einer gleichgerichteten Wechselspannung (U0) gespeiste steuerbare Glättungsschaltung (3, 5, 5) zum Erzeugen der der Vollbrückenschaltung (2) zugeführten Gleichspannung (IBUS)
sowie durch eine Regelschaltung (1) zum Erfassen der über die regelbare Konstantstromquelle der jeweils eingeschalteten Brückendiagonalen abfallenden Spannung (UFET) und Ansteuern der Glättungsschaltung derart, daß die über die regelbare Konstantstromquelle abfallende Spannung (UFET) im wesentlichen einem vorgegebenen Sollwert (UFETsoll) entspricht. - Elektronisches Vorschaltgerät nach Anspruch 5,
dadurch gekennzeichnet, dass die Glättungsschaltung durch einen mit der gleichgerichteten Wechselspannung gespeisten ersten Schaltregler (3) zum Erzeugen einer Zwischenkreisspannung (UZ) sowie einen zu dem ersten Schaltregler (3) in Serie geschalteten und von der Regelschaltung (1) angesteuerten zweiten Schaltregler (4) gebildet wird. - Elektronisches Vorschaltgerät nach Anspruch 6,
dadurch gekennzeichnet, dass der erste Schaltregler (3) ein Hochsetzsteller ist. - Elektronisches Vorschaltgerät nach Anspruch 6 oder 7,
dadurch gekennzeichnet, dass der zweite Schaltregler (4) ein Tiefsetzsteller ist. - Elektronisches Vorschaltgerät nach Anspruch 5,
dadurch gekennzeichnet, dass die Glättungsschaltung durch einen Buck-Boost-Converter (5) gebildet wird. - Elektronisches Vorschaltgerät nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Gasentladungslampe (LA) Bestandteil eines als Last der Vollbrückenschaltung geschalteten Resonanzkreises (L, C) ist,
wobei in einem ersten Betriebsmodus bei niedriger Lampenhelligkeit die Regelung des Lampenstroms durch die regelbare Konstantstromquelle der eingeschalteten Brückendiagonalen erfolgt, während in einem zweiten Betriebsmodus bei hoher Lampenhelligkeit dem Resonanzkreis (L, C) eine Wechselspannung mit konstanter Frequenz aber mit veränderbarem Tastverhältnis zugeführt wird. - Verfahren zur Steuerung der Helligkeit einer Gasentladungslampe (LA), die als Last einer Vollbrückenschaltung geschaltet ist, wobei abwechselnd jeweils eine Brückendiagonale einschaltet und die andere Brückendiagonale der Vollbrücke ausschaltet ist,
dadurch gekennzeichnet, dass während der Einschaltzeit einer Brückendiagonalen der Strom durch die Gasentladungslampe (LA) durch eine der entsprechenden Brückendiagonalen jeweils zugeordnete einstellbare Konstantstromquelle geregelt wird. - Verfahren nach Anspruch 11,
dadurch gekennzeichnet, dass der Vollbrückenschaltung eine regelbare Gleichspannung (UBUS) zugeführt wird, die um einen vorgegebenen Wert oberhalb der Lampenspannung (ULA) liegt. - Verfahren nach Anspruch 11 oder 12,
dadurch gekennzeichnet, dass nur bei niedriger Lampenhelligkeit in einem ersten Betriebsmodus während der Einschaltzeit einer Brückendiagonalen der Strom durch die Gasentladungslampe (LA) durch die einstellbare Konstantstromquelle geregelt wird und bei hoher Lampenhelligkeit in einem zweiten Betriebsmodus die Gasentladungslampe (LA) mit einer in ihrem Tastverhältnis veränderbaren Wechselspannung betrieben wird. - Verfahren nach einem der Ansprüche 11 bis 13,
dadurch gekennzeichnet, dass der Wechsel zwischen den beiden Brückendiagonalen mit einer Frequenz von mehr als 100 Hz erfolgt. - Verfahren nach Anspruch 14,
dadurch gekennzeichnet, dass der Wechsel zwischen den beiden Brückendiagonalen mit einer Frequenz zwischen 700 Hz und 2000 Hz erfolgt. - Verfahren nach einem der Ansprüche 11 bis 15,
dadurch gekennzeichnet, dass bei einem Lampenbetrieb bei niedriger Helligkeit lediglich eine einzige Brückendiagonale eingeschaltet ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04013891A EP1465465B1 (de) | 2000-10-16 | 2001-09-11 | Elektronisches Vorschaltgerät mit Vollbrückenschaltung |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10051139A DE10051139A1 (de) | 2000-10-16 | 2000-10-16 | Elektronisches Vorschaltgerät mit Vollbrückenschaltung |
DE10051139 | 2000-10-16 | ||
PCT/EP2001/010497 WO2002034015A1 (de) | 2000-10-16 | 2001-09-11 | Elektronisches vorschaltgerät mit vollbrückenschaltung |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04013891A Division EP1465465B1 (de) | 2000-10-16 | 2001-09-11 | Elektronisches Vorschaltgerät mit Vollbrückenschaltung |
EP04013891.9 Division-Into | 2004-06-14 |
Publications (2)
Publication Number | Publication Date |
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EP1330945A1 EP1330945A1 (de) | 2003-07-30 |
EP1330945B1 true EP1330945B1 (de) | 2005-03-16 |
Family
ID=7659903
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP01974243A Expired - Lifetime EP1330945B1 (de) | 2000-10-16 | 2001-09-11 | Elektronisches vorschaltgerät mit vollbrückenschaltung |
EP04013891A Expired - Lifetime EP1465465B1 (de) | 2000-10-16 | 2001-09-11 | Elektronisches Vorschaltgerät mit Vollbrückenschaltung |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP04013891A Expired - Lifetime EP1465465B1 (de) | 2000-10-16 | 2001-09-11 | Elektronisches Vorschaltgerät mit Vollbrückenschaltung |
Country Status (8)
Country | Link |
---|---|
US (1) | US6876158B2 (de) |
EP (2) | EP1330945B1 (de) |
AT (2) | ATE419735T1 (de) |
AU (2) | AU9380701A (de) |
BR (1) | BR0114678A (de) |
DE (3) | DE10051139A1 (de) |
WO (1) | WO2002034015A1 (de) |
ZA (1) | ZA200302354B (de) |
Cited By (1)
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DE102007049397A1 (de) | 2007-10-15 | 2009-04-16 | Tridonicatco Gmbh & Co. Kg | DC-Versorgung, insbesondere für Leuchtdioden, in einem Betriebsgerät mit Wechselrichter |
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CN100521862C (zh) | 2002-12-20 | 2009-07-29 | 皇家飞利浦电子股份有限公司 | 双态hid运行 |
DE102004016945A1 (de) * | 2004-04-06 | 2005-10-27 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | EVG mit Regelschaltung und Störgrößenaufschaltung |
KR100695525B1 (ko) * | 2005-01-31 | 2007-03-15 | 주식회사 하이닉스반도체 | 반도체 기억 소자의 지연 고정 루프 |
ATE385166T1 (de) | 2005-02-02 | 2008-02-15 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren und anordnung zum dimmen von lichtquellen |
DE102005028672A1 (de) * | 2005-06-21 | 2006-12-28 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Glättungsschaltung zur Verbesserung der EMV |
DE102006018569A1 (de) * | 2006-04-21 | 2007-10-25 | Tridonicatco Gmbh & Co. Kg | Dimmbares elektronisches Vorschaltgerät |
JP2010525537A (ja) * | 2007-04-27 | 2010-07-22 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | ガス放電ランプ用のドライブ装置 |
GB2449931B (en) * | 2007-06-08 | 2011-11-16 | E2V Tech | Power supply for radio frequency heating apparatus |
CN101884252B (zh) * | 2007-12-03 | 2013-05-01 | 皇家飞利浦电子股份有限公司 | 驱动气体放电灯的方法 |
CN101897239A (zh) * | 2007-12-14 | 2010-11-24 | 皇家飞利浦电子股份有限公司 | 可调光发光设备 |
EP2340690B1 (de) | 2008-10-23 | 2017-10-04 | OSRAM GmbH | Schaltungsanordnung und verfahren zum betreiben einer hochdruckentladungslampe |
CA2842398C (en) | 2011-08-23 | 2017-11-28 | Exxonmobil Upstream Research Company | Estimating fracture dimensions from microseismic data |
US8754583B2 (en) * | 2012-01-19 | 2014-06-17 | Technical Consumer Products, Inc. | Multi-level adaptive control circuitry for deep phase-cut dimming compact fluorescent lamp |
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JPS61159702A (ja) * | 1984-12-29 | 1986-07-19 | 株式会社村田製作所 | 有機正特性サ−ミスタ |
AT392384B (de) | 1985-02-04 | 1991-03-25 | Zumtobel Ag | Vorschaltgeraet zum betrieb von gasentladungslampen mit gleichstrom |
JPH04109952A (ja) | 1990-08-31 | 1992-04-10 | Toshiba Lighting & Technol Corp | 紫外線照射装置 |
US5491388A (en) * | 1992-03-25 | 1996-02-13 | Toto Ltd. | Power regulator of discharge lamp and variable color illumination apparatus using the regulator |
DE4238388C2 (de) * | 1992-11-13 | 1997-02-20 | Heidelberger Druckmasch Ag | Elektronische Schaltungsanordnung zur Ansteuerung einer UV-Strahlungsquelle |
DE4416042A1 (de) * | 1993-06-25 | 1995-01-05 | Prolux Maschinenbau Gmbh | Schaltungsanordnung zum Betrieb von Entladungslampen |
DE4401630A1 (de) | 1994-01-20 | 1995-07-27 | Bischl Johann | Zünd- und Betriebsgerät für den Gleichstrombetrieb von Gasentladungslampen |
FR2721475B1 (fr) * | 1994-06-15 | 1996-07-19 | Sgs Thomson Microelectronics | Circuit de commande de commutation et dispositif de commande pour lampe fluorescente à basse pression. |
DE19523750A1 (de) * | 1995-06-29 | 1997-01-02 | Thomson Brandt Gmbh | Wechselstromquelle |
US6124682A (en) * | 1996-11-19 | 2000-09-26 | Micro Tech Limited | Lamp driver circuit using resonant circuit for starting lamp |
US5932976A (en) * | 1997-01-14 | 1999-08-03 | Matsushita Electric Works R&D Laboratory, Inc. | Discharge lamp driving |
US5817413A (en) * | 1997-05-20 | 1998-10-06 | Nyacol Products, Inc. | High shear pipeline tape |
JP3488807B2 (ja) * | 1997-05-26 | 2004-01-19 | セイコープレシジョン株式会社 | El素子の駆動回路 |
GB9714785D0 (en) * | 1997-07-14 | 1997-09-17 | Sheffield University | Discharge lamp |
JP3829507B2 (ja) * | 1997-12-12 | 2006-10-04 | 松下電工株式会社 | 電子バラストおよびhidランプ制御回路 |
ATE221715T1 (de) * | 1998-09-18 | 2002-08-15 | Knobel Lichttech | Schaltungsanordnung zum betreiben von gasentladungslampen |
-
2000
- 2000-10-16 DE DE10051139A patent/DE10051139A1/de not_active Ceased
-
2001
- 2001-09-11 AT AT04013891T patent/ATE419735T1/de not_active IP Right Cessation
- 2001-09-11 EP EP01974243A patent/EP1330945B1/de not_active Expired - Lifetime
- 2001-09-11 AU AU9380701A patent/AU9380701A/xx active Pending
- 2001-09-11 AU AU2001293807A patent/AU2001293807B2/en not_active Ceased
- 2001-09-11 ZA ZA200302354A patent/ZA200302354B/en unknown
- 2001-09-11 DE DE50114634T patent/DE50114634D1/de not_active Expired - Lifetime
- 2001-09-11 WO PCT/EP2001/010497 patent/WO2002034015A1/de active IP Right Grant
- 2001-09-11 AT AT01974243T patent/ATE291341T1/de not_active IP Right Cessation
- 2001-09-11 EP EP04013891A patent/EP1465465B1/de not_active Expired - Lifetime
- 2001-09-11 BR BR0114678-5A patent/BR0114678A/pt not_active Application Discontinuation
- 2001-09-11 DE DE50105645T patent/DE50105645D1/de not_active Expired - Lifetime
-
2003
- 2003-04-16 US US10/414,319 patent/US6876158B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007049397A1 (de) | 2007-10-15 | 2009-04-16 | Tridonicatco Gmbh & Co. Kg | DC-Versorgung, insbesondere für Leuchtdioden, in einem Betriebsgerät mit Wechselrichter |
DE202008013673U1 (de) | 2007-10-15 | 2010-11-11 | Tridonic Gmbh & Co. Kg | DC-Versorgung, insbesondere für Leuchtdioden, in einem Betriebsgerät mit Wechselrichter |
Also Published As
Publication number | Publication date |
---|---|
BR0114678A (pt) | 2003-10-07 |
ZA200302354B (en) | 2004-03-26 |
US20040004447A1 (en) | 2004-01-08 |
ATE291341T1 (de) | 2005-04-15 |
ATE419735T1 (de) | 2009-01-15 |
AU9380701A (en) | 2002-04-29 |
EP1465465B1 (de) | 2008-12-31 |
DE50105645D1 (de) | 2005-04-21 |
EP1330945A1 (de) | 2003-07-30 |
US6876158B2 (en) | 2005-04-05 |
EP1465465A3 (de) | 2004-10-13 |
DE50114634D1 (de) | 2009-02-12 |
AU2001293807B2 (en) | 2006-02-16 |
WO2002034015A1 (de) | 2002-04-25 |
EP1465465A2 (de) | 2004-10-06 |
DE10051139A1 (de) | 2002-04-25 |
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