EP1443807A2 - Circuit et méthode d'allumage et de commande du fonctionnement des lampes à décharges - Google Patents

Circuit et méthode d'allumage et de commande du fonctionnement des lampes à décharges Download PDF

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Publication number
EP1443807A2
EP1443807A2 EP03029436A EP03029436A EP1443807A2 EP 1443807 A2 EP1443807 A2 EP 1443807A2 EP 03029436 A EP03029436 A EP 03029436A EP 03029436 A EP03029436 A EP 03029436A EP 1443807 A2 EP1443807 A2 EP 1443807A2
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EP
European Patent Office
Prior art keywords
pump
inverter
circuit arrangement
arrangement according
node
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
Application number
EP03029436A
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German (de)
English (en)
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EP1443807B1 (fr
EP1443807A3 (fr
Inventor
Bernd Rudolph
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Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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Publication of EP1443807A2 publication Critical patent/EP1443807A2/fr
Publication of EP1443807A3 publication Critical patent/EP1443807A3/fr
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Publication of EP1443807B1 publication Critical patent/EP1443807B1/fr
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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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/05—Starting and operating circuit for fluorescent lamp
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/07—Starting and control circuits for gas discharge lamp using transistors

Definitions

  • the invention relates to a circuit arrangement according to the preamble of Claim 1. It is in particular a circuit arrangement for Operation of discharge lamps, the so-called charge pumps to reduce mains harmonics.
  • Circuit arrangements for starting and operating discharge lamps come in electronic control gear for discharge lamps. Under the start The discharge lamp will at least ignite during one Ignition phase understood. However, electrode coils can also be preheated precede the ignition phase during a preheating phase. If the control gear is on are operated with a mains voltage, they are subject to relevant regulations with respect to mains harmonics, e.g. B. IEC 1000-3-2. So these regulations circuitry measures for reduction are observed mains harmonics necessary. One such measure is installation so-called charge pumps. The advantage of charge pumps is that they are small circuitry expenditure, which is necessary for their realization.
  • the topology of a charge pump means that the rectifier has one electronic pump switch is coupled to the main energy storage. Thereby arises between the direct current and the electronic pump switch Pumping node.
  • the pump node is via a pulp network with the inverter output coupled.
  • the pump network can contain components that are also the Adaptation network can be assigned.
  • the principle of charge pumping exists in that during a half period of the inverter frequency over the pump node Energy taken from the mains voltage and buffered in the pump network becomes. In the following half period of the inverter frequency is the temporarily stored energy via the electronic pump switch to the main energy storage fed.
  • the above Matching network contains a resonant circuit, which is essentially one Contains resonance capacitor and a lamp choke.
  • the resonant circuit has one Resonance frequency on that without damping the resonance circuit at a natural frequency of the resonance circuit.
  • the inverter To ignite the discharge lamp, the inverter is first switched on Inverter frequency operated, which is above the natural frequency. In an ignition phase the inverter frequency is reduced until it is close to the natural frequency the resonant circuit generates a high voltage on the discharge lamp and the discharge lamp ignites.
  • One controller is described in prior art EP 0 621 743 (Mattas) has first controller input.
  • This first controller input is an electrical one Size supplied, the first operating size of a lamp clamp operated Discharge lamp corresponds.
  • the controller has a second controller input.
  • the second A second electrical variable is fed to the controller input, that of a second operating variable corresponds, which is a measure of the reactive energy, in the resonant circuit swings.
  • the second electrical variable is the second controller input supplied via a threshold switch. In the event that the value of the second electrical quantity exceeds the threshold value of the threshold switch, the inverter frequency is increased.
  • the threshold and frequency increase can be selected the maximum energy imbalance in the charge pump can. According to the invention, with optimal use of the components, a maximum ignition voltage can be reached. This is a reliable ignition of Discharge lamps also possible with inexpensive components.
  • resistors are represented by the letter R, transistors by the Letter T, coil by letter L, amplifier by letter A, Diodes through the letter D, node potentials through the letters N and Capacitors denoted by the letter C followed by a number. Also below are for the same and equivalent elements of the different Embodiments used the same reference numerals throughout.
  • FIG. 1 is a block diagram for a circuit arrangement according to the invention shown for starting and operating discharge lamps.
  • At terminals J can be a line voltage from a line voltage source of the circuit arrangement are fed.
  • the mains voltage is first fed into a block FR.
  • this block contains known means for filtering interference.
  • this block contains a rectifier that has the mains voltage, the one AC voltage is rectified.
  • a full-wave rectifier is usually used for this used in bridge circuit.
  • Important for the function of one in the circuit arrangement realized charge pump is the property of the rectifier, that it does not allow current to flow from the circuitry to the mains voltage source.
  • the rectified mains voltage is an electronic pump switch UNI supplied, being at the junction between rectifier FR and electronically cm Pump switch UNI a pump node N1 is created.
  • the electronic pump switch UNI from a pump diode that only has a current flow allowed that flows from the pump node N1 to the pump diode.
  • any electronic switch such as. B. a MOSFET for the electronic Use pump switch UNI, which fulfills the function of the pump diode.
  • the main energy storage is mostly STO as an electrolytic capacitor executed. However, other types of capacitors are also possible.
  • the dual form of energy storage with the capacitor is also possible. In the dual case, the main energy storage STO is designed as a coil. Because of the lower cost and better efficiency is a capacitor than Main energy storage STO preferred.
  • the main energy storage STO supplies its energy to an inverter INV Available.
  • the inverter INV generates an alternating variable, usually an alternating voltage, which is fed to a block designated MN and PN.
  • MN describes the function of the block as a matching network. Regarding this function the block MN / PN can be connected to a discharge lamp L.
  • Designated PN the function of the block as a pump network.
  • the block is related to this function MN / PN connected to the pump node N1.
  • the connecting line between the Pump node N1 and the block MN / PN is in Figure 1 on both ends with a Arrow. This is to indicate that energy alternates from Pump node N1 flows to block MN / PN and back.
  • the functions of the matching network and the pump network are combined in the MN / PN block because Embodiments of the invention are possible in which individual components both can be assigned to one or the other function.
  • a controller CONT is provided to regulate a desired first operating variable which acts on the inverter INV via a manipulated variable. So that becomes a Parameters of the alternating variable output by the inverter, e.g. B. the operating frequency or the pulse width, so changed that a change in the first company size is counteracted.
  • the first company size becomes a first input of the controller via connection B1.
  • At the first company size is a size that determines the operation of the lamp. Therefore rises in FIG. 1 the connection B1 to the block for the discharge lamp L.
  • the first operating variable is the lamp current or the lamp power.
  • the CONT controller has a second input. About one Threshold switch TH is fed a second operating variable to the second input.
  • the second operating variable is a measure of the reactive energy which oscillates in a resonant circuit, which is contained in the block MN / PN.
  • the tap The second company size using connection B2 is therefore carried out on the block MN / PN. But it is also possible to measure the reactive energy from lamp sizes, such as B. to gain the lamp voltage.
  • the reactive energy provides information about the energy imbalance of the charge pump and the stress on components. If the second company size exceeds the threshold of the threshold switch, the controller CONT Inverters influenced in such a way that the reactive energy does not increase any further. This can be done by raising the operating frequency of the inverter INV becomes.
  • the CONT controller can contain an adder which is connected to the controller inputs applied signals added. It must be ensured that the signal the signal at the second controller input does not jam at the first controller input. exceeds the signal at the second controller input the signal at the first controller input, see above the signal at the second controller input must be the relevant controller signal.
  • FIG. 2 shows an exemplary embodiment of a circuit arrangement according to the invention shown for the start and operation of discharge lamps.
  • a mains voltage can be connected to the connections J1 and J2. Via a filter consisting of two capacitors C1, C2 and two coils L1, L2, the mains voltage a full bridge rectifier consisting of diodes D1, D2, D3, D4 fed.
  • the full-bridge rectifier provides one positive output Node N21, the rectified mains voltage with respect to a reference node N0 ready.
  • the rectified mains voltage becomes two pump nodes via the diodes D5 and D6 N22 and N23 fed.
  • the exemplary embodiment in FIG. 2 accordingly has two pump branches.
  • the diodes are used to decouple the pump branches from each other D5 and D6 required. If there is only one pumping branch, a pumping node can be used directly the rectifier output, node 21, are connected. However, this is too note that the diodes used in the rectifier can switch quickly enough to follow the inverter frequency. If this is not the case, must a fast diode between the rectifier output even with only one pump branch and pump nodes are switched.
  • Pump node coupled to the positive output of the rectifier From the literature charge pump topologies are also known, in which pump nodes with the negative output of the rectifier are coupled.
  • An electronic pump switch leads from the pump nodes N22 and N23, which are designed as diodes D7 and D8, to node N24. Between N24 and N0 the main energy store, which is designed as an electrolytic capacitor C3, is connected.
  • C3 feeds the inverter, which is designed as a half-bridge.
  • inverter which is designed as a half-bridge.
  • converter topologies such as B. flyback converter or full bridge can be used.
  • Advantageous a half bridge is used for lamp powers between 5W and 300W, because it represents the least expensive topology.
  • the half-bridge essentially consists of a series connection of two half-bridge transistors T1 and T2 and a series connection of two coupling capacitors C4 and C5. Both series connections are connected in parallel to C3.
  • a connection node N25 the half-bridge transistors and a connection node N26 the Coupling capacitors form the inverter output at the one rectangular Inverter voltage with an inverter frequency is present.
  • a lamp choke L3 is located between N25 and a lamp voltage node N27 connected.
  • the connection J3 is connected to N27, to that in the exemplary embodiment the series connection of two discharge lamps Lp1 and Lp2 is connected.
  • the present However, the invention can also be carried out with one or more lamps.
  • the Current through the discharge lamps Lp1 and Lp2 flows through a connection J8, through a winding W1 of a measuring transformer to node N26.
  • the inverter voltage is connected to a series connection of two discharge lamps Lp1, Lp2 and the lamp choke L3.
  • the current fed into J3 does not only flow through the gas discharge of the discharge lamps Lp1, Lp2 but also by an outer filament of the first discharge lamp Lp1 to a connection J4. From there through a winding W4 of a heating transformer, further by a variable resistor R1, further by a winding W3 of the measuring transformer for connection J7. There is an external one at connection J7 Filament of the second discharge lamp Lp2 connected, the other end of the Connection J8 leads. There are two inner filaments of the discharge lamps Lp1 and Lp2 each via the connections J5 and J6 with the winding W5 of the heating transformer connected.
  • the arrangement described in this paragraph causes the inverter voltage not just a current through the gas discharge of the discharge lamps Lp1, Lp2 but also a heating current through the outer coils and a heating current through the inner coils of the Discharge lamps Lp1, Lp2. If only one discharge lamp is to be operated, so the heating transformer can be omitted.
  • the heating current is essentially before the ignition of the discharge lamps Lp1, Lp2 during a preheating phase as preheating current for preheating the filaments needed.
  • the variable resistor R1 essentially determines the value of the heating current. During the preheating phase, the value of R1 is so low that a lamp data predetermined heating current is reached. After the preheating phase, the Value of R1 so that compared to the current through the gas discharge of the discharge lamps Lp1, Lp2 negligible heating current flows.
  • R1 is implemented by a so-called PTC or PTC thermistor. It is a Resistance that has a low resistance when cold. By the The PTC thermistor heats up the heating current, which increases its resistance.
  • R1 can also be implemented by an electronic switch that is in the preheating phase is closed and then open. In series with this switch can be a resistor be switched with constant resistance value. So that's a quick one Transition from the preheating phase to the ignition phase possible.
  • the arrangement described for preheating the coils is during the Preheat phase by damping the resonance frequency one in the next section described resonance circuit lower than its natural frequency.
  • an inverter frequency is selected that is below the natural frequency is so that there is a high heating current and thus a short preheating phase results.
  • the lamp voltage node N27 is connected via a first resonance capacitor C6 connected to the pump node N23. Between N23 and N0 is a second resonance capacitor C7 switched. C6 and C7 form a resonant circuit with the lamp choke L3. To determine the natural frequency of the resonance circuit, C6 and C7 considered in series. The effective capacity value of C6 and C7 regarding the natural frequency is thus the quotient of the product and the sum of the Capacitance values of C6 and C7. The resonant circuit becomes close to its natural frequency excited, an ignition voltage is generated across the lamps, which is used to ignite the discharge lamps leads. After ignition, L3 works together with C6 and C7 as a matching network, the one output impedance of the inverter into one for operation the necessary impedance is transformed by the discharge lamps.
  • the combination works by connecting C6 and C7 to the pump node N23 of L3, C6 and C7 not only as a resonance circuit and matching network, but at the same time as a pump network.
  • the potential at N23 is lower than that current mains voltage, the pump network L3, C6, C7 draws energy from the Mains voltage. If the potential at N23 exceeds the voltage at the main energy storage C3, the energy absorbed by the mains voltage is given to C3.
  • the ratio of the capacitance values of C6 and C7 the Effect of the network L3, C6, C7 can be compared as a pump network. The bigger the capacity value of C7 is chosen, the less the effect of Network L3, C6, C7 as a pump network.
  • a further pumping effect is based on a capacitor C8, which is between N23 and the connection node N25 of the half-bridge transistors T1, T2 is connected.
  • C8 also not only acts as a pump network, but also fulfills the task a snubber capacitor. Snubber capacitors are common as a measure for switch relief in inverters.
  • the pump network for the second pump branch consists of a series connection of one Pump choke L4 and a pump capacitor C9. This pump network is between the connection node N25 of the half-bridge transistors T1, T2 and Pump node N22 switched.
  • two Pump branches are used so that the pumped energy is divided into several components becomes. This makes it possible to dimension the components more cost-effectively. Also this gives a degree of freedom in the design of the dependency of the pumped Energy from operating parameters of the discharge lamps.
  • the invention is but can also be implemented with just one pump branch.
  • the half-bridge transistors T1, T2 are designed as MOSFETs. Other electronic too Switches can be used for this.
  • T1 and T2 are provided with an integrated circuit IC1.
  • IC1 is a circuit from International Rectifier IR2153. There are also alternative circuits to this type on the Market available; z. B. L6571 from STM.
  • the circuit IR2153 contains one So-called high-side drivers with which the half-bridge transistor T1 can also be controlled can, although it has no connection to the reference potential N0. These are one Diode D10 and a capacitor C10 necessary.
  • the IC1 is supplied with operating voltage via connection 1 of the IC1.
  • a voltage source VCC between terminal 1 of IC1 and N0 intended.
  • this voltage source VCC can be realized.
  • the IC can be operated via a Resistor are supplied by the rectified mains voltage.
  • the IC1 contains one Oscillator whose oscillation frequency can be set via connections 2 and 3 can.
  • the oscillation frequency of the oscillator corresponds to the inverter frequency.
  • Between connections 2 and 3 is a frequency-determining resistor R3 connected.
  • Between connection 3 and N0 is the series connection of a frequency determining Capacitor C11 and the emitter-collector path of a bipolar transistor T3 switched.
  • the basic connection of T3 is connected to a manipulated variable node N28.
  • T3, IC1 and their Circuitry can thus be seen as a controller.
  • the functions of the IC1 and its wiring can also be implemented by any voltage or current controlled oscillator, which has driver circuits controls the half-bridge transistors.
  • the control loop in the exemplary embodiment records the current through the Gas discharge of the discharge lamps Lp1, Lp2.
  • the measuring transformer has a winding W2.
  • the winding direction in the measuring transformer is designed so that from the heating current in winding W3 is subtracted from a total current in winding W1 is so that a current flows in winding W2, which corresponds to the current through the gas discharge of the discharge lamps Lp1, Lp2 is proportional.
  • a full bridge rectifier formed by diodes D11, D12, D13 and D14 directs the current through winding W2 is the same and leads it via a low-resistance measuring resistor R4 to N0.
  • the Voltage drop across R4 is thus a measure of the current through the gas discharge of the Discharge lamps Lp1, Lp2. Via a low pass for averaging, which by a resistor R5 and a capacitor C13 is formed, the voltage drop occurs at R4 to the input of a non-inverting measuring amplifier.
  • the measuring amplifier is made in a known manner by an operational amplifier AMP and the resistors R6, R7 and R8 realized.
  • the exemplary embodiment is a Gain of the measuring amplifier set at approx. 10.
  • the measuring amplifier can be omitted or by an impedance converter, such as. B. an emitter follower.
  • the output of the measuring amplifier is via a diode D15 with the manipulated variable node N28 connected. This is the control loop for regulating the current through the Gas discharge of the discharge lamps Lp1, Lp2 closed.
  • the diode D15 is necessary so that the potential of N28 can be raised to a value above that value specified by the measuring amplifier.
  • the anode of D15 is a first Controller input.
  • the threshold switch according to the invention is in Figure 2 by a varistor MOV realized. It is connected in series with a capacitor C12, a resistor R2 and a diode D17, which connects the lamp voltage node N27 with the Control variable node N28 connects.
  • the anode of D17 provides a second controller input N28 is through the parallel connection of a resistor R9 and one Capacitor C14 connected to N0.
  • N27 there is a voltage compared to N0, which is a measure of that in the resonant circuit is formed from L3, C6 and C7 vibrating reactive energy. Exceeds this tension the threshold voltage of the varistor MOV, a current flows through R9 and C14 is charging. This increases the voltage at the manipulated variable node N28. This causes an increase in the inverter frequency and that in the resonance circuit Vibrating reactive energy is reduced as the inverter frequency continues moves away from the natural frequency of the resonance circuit.
  • the diode D 16 is connected between N0 and the connection point of R2 and D17. In combination with C12 at N28, the sum of positive and negative amplitude of the voltage applied through the varistor MOV leaves. Any other threshold switch can be used instead of the MOV find how he z. B. built up by Zener diodes or suppressor diodes can be.
  • the threshold value of the MOV varistor is in the application example 250Veff selected. A higher value means more reactive energy in the resonance circuit approved, resulting in a higher ignition voltage on the discharge lamps Lp1, Lp2, but also leads to a higher load on components. On the The threshold value of the varistor MOV can thus set a desired optimum become.
  • the value of the resistance R2 influences the strength of the effect of the invention Intervention on the control loop at the manipulated variable node N28. It is also advantageous a non-linear relationship between the voltage at the manipulated variable node N28 and the inverter frequency. This nonlinear relationship is shown in the application example realized by the nonlinear characteristic of T3. He will also on the dependence of the frequency of the oscillator in the IC1 on the voltage at Connection 3 of the IC1 influenced. A sharp rise in the voltage at N27 leads due to the non-linearity to a disproportionate increase in the inverter frequency, whereby an overload of components such. B. the voltage load of C3 or the current load of T1 and T2 is prevented.
  • the current in the resonance circuit could also be used as a measure for that in the resonance circuit vibrating reactive energy can be used.
  • the current in the resonance circuit could also be used as a measure for that in the resonance circuit vibrating reactive energy can be used.

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  • Circuit Arrangements For Discharge Lamps (AREA)
  • Dc-Dc Converters (AREA)
EP03029436A 2003-01-28 2003-12-19 Circuit et méthode d'allumage et de commande du fonctionnement des lampes à décharges Expired - Lifetime EP1443807B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10303276 2003-01-28
DE10303276A DE10303276A1 (de) 2003-01-28 2003-01-28 Schaltungsanordnung und Verfahren zum Start und Betrieb von Entladungslampen

Publications (3)

Publication Number Publication Date
EP1443807A2 true EP1443807A2 (fr) 2004-08-04
EP1443807A3 EP1443807A3 (fr) 2005-10-26
EP1443807B1 EP1443807B1 (fr) 2007-01-24

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EP03029436A Expired - Lifetime EP1443807B1 (fr) 2003-01-28 2003-12-19 Circuit et méthode d'allumage et de commande du fonctionnement des lampes à décharges

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US (1) US6933681B2 (fr)
EP (1) EP1443807B1 (fr)
KR (1) KR101010164B1 (fr)
CN (1) CN1558705B (fr)
AT (1) ATE352976T1 (fr)
CA (1) CA2456371A1 (fr)
DE (2) DE10303276A1 (fr)
TW (1) TWI340608B (fr)

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EP1601237A2 (fr) 2004-05-26 2005-11-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast avec circuit de contrôle pour l' alimentation permanente d' une lampe à décharge
EP1635620A1 (fr) * 2004-09-13 2006-03-15 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast électronique de pompe a charge pour lampes a décharge avec électrodes de préchauffage
WO2013113836A1 (fr) * 2012-02-03 2013-08-08 Tridonic Gmbh & Co Kg Ballast de lampe comportant pompe à commutation de charge dotée d'une protection contre les surcharges

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DE102005007346A1 (de) * 2005-02-17 2006-08-31 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsanordnung und Verfahren zum Betreiben von Gasentladungslampen
DE102005008483A1 (de) * 2005-02-24 2006-08-31 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH EVG für Hochdruckentladungslampe mit Strommesseinrichtung
DE102005058484A1 (de) * 2005-12-07 2007-06-14 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsanordnung und Verfahren zum Betreiben mindestens einer LED
US8736189B2 (en) * 2006-12-23 2014-05-27 Fulham Company Limited Electronic ballasts with high-frequency-current blocking component or positive current feedback
CO6530147A1 (es) * 2011-09-23 2012-09-28 Panacea Quantum Leap Technology Llc Balaso electrónico
DE102013201438A1 (de) * 2013-01-29 2014-07-31 Osram Gmbh Schaltungsanordnung und Verfahren zum Betreiben und Dimmen mindestens einer LED
DE102014114954A1 (de) * 2014-10-15 2016-04-21 Beckhoff Automation Gmbh Halbbrücke mit zwei Halbleiterschaltern zum Betreiben einer Last

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1601237A2 (fr) 2004-05-26 2005-11-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast avec circuit de contrôle pour l' alimentation permanente d' une lampe à décharge
EP1601237A3 (fr) * 2004-05-26 2009-07-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast avec circuit de contrôle pour l' alimentation permanente d' une lampe à décharge
EP1635620A1 (fr) * 2004-09-13 2006-03-15 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast électronique de pompe a charge pour lampes a décharge avec électrodes de préchauffage
US7193375B2 (en) 2004-09-13 2007-03-20 Patent-Treuhand-Gesellschaft Fur Elektrisch Gluhlampen Mbh Electronic ballast having a pump circuit for a discharge lamp having preheatable electrodes
WO2013113836A1 (fr) * 2012-02-03 2013-08-08 Tridonic Gmbh & Co Kg Ballast de lampe comportant pompe à commutation de charge dotée d'une protection contre les surcharges

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KR20040069290A (ko) 2004-08-05
ATE352976T1 (de) 2007-02-15
KR101010164B1 (ko) 2011-01-20
DE50306367D1 (de) 2007-03-15
EP1443807B1 (fr) 2007-01-24
TW200501830A (en) 2005-01-01
CN1558705B (zh) 2010-05-12
CN1558705A (zh) 2004-12-29
TWI340608B (en) 2011-04-11
CA2456371A1 (fr) 2004-07-28
EP1443807A3 (fr) 2005-10-26
DE10303276A1 (de) 2004-07-29
US6933681B2 (en) 2005-08-23
US20040150349A1 (en) 2004-08-05

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