EP2107859B1 - Commutation et procédé d'alimentation d'une lampe DEL - Google Patents

Commutation et procédé d'alimentation d'une lampe DEL Download PDF

Info

Publication number
EP2107859B1
EP2107859B1 EP09405060A EP09405060A EP2107859B1 EP 2107859 B1 EP2107859 B1 EP 2107859B1 EP 09405060 A EP09405060 A EP 09405060A EP 09405060 A EP09405060 A EP 09405060A EP 2107859 B1 EP2107859 B1 EP 2107859B1
Authority
EP
European Patent Office
Prior art keywords
current
voltage
control
led
circuit
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.)
Active
Application number
EP09405060A
Other languages
German (de)
English (en)
Other versions
EP2107859A1 (fr
Inventor
Michel Noe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sander Elektronik AG
Original Assignee
Sander Elektronik AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sander Elektronik AG filed Critical Sander Elektronik AG
Publication of EP2107859A1 publication Critical patent/EP2107859A1/fr
Application granted granted Critical
Publication of EP2107859B1 publication Critical patent/EP2107859B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/39—Circuits containing inverter bridges
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/385—Switched mode power supply [SMPS] using flyback topology
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/382—Switched mode power supply [SMPS] with galvanic isolation between input and output

Definitions

  • the invention relates to the field of electronic circuit technology, and in particular to a circuit and a method for powering a luminaire, in which light-emitting diodes (LED) are used as lighting means, according to the preamble of the corresponding independent claims.
  • LED light-emitting diodes
  • the converter In a so-called LED lamp (i.e., a lamp in which light-emitting diodes are used as lighting), the converter is usually built as a flyback converter since the light output of the LED lamp is usually less than 24W.
  • a second problem is the fulfillment of the standard defining the electromagnetic compatibility of the electronic control.
  • the clock frequency With conventional integrated circuits, the clock frequency remains constant. Consequently the disturbances in the clock frequency and their harmonic harmonics are high. Accordingly, their filtering is complicated or expensive to implement.
  • Such transducers can operate at very low voltages. This eliminates the need to use a high-value capacitor. Such capacitors are also cheaply available as film capacitors. Consequently, the standard which limits the harmonic content of the mains current is also easy to meet.
  • WO 99/07188 and WO 01/05193 show single-ended flyback converter for powering LED lights. In it, however, no purely free-swinging single-ended flyback converters are described. In addition, there is no output voltage limitation (in the case of a light-emitting diode failure).
  • the light-emitting diode forward current is regulated by modulation of the current in the main or primary winding, wherein safety functions such as a collector current limitation and a limitation of the output voltage can be implemented in a simple manner in this circuit.
  • the limitation of the output voltage is due to the auxiliary winding through a circuit which is galvanically coupled to the primary side, but is galvanically isolated from the secondary side.
  • the limitation of the auxiliary voltage by the voltage limiter automatically also drives the limitation of the secondary voltage. If the bulbs are not connected or faulty, otherwise the secondary voltage or the output voltage could rise to too high values.
  • the auxiliary voltage is preferably limited by a Zener diode, which is connected in parallel with or independent of an amplifier circuit for current regulation.
  • At least a portion of the control current (that is, a portion of the control current or the entire control current) is preferably generated when the auxiliary voltage exceeds a predetermined value. At least one further proportion of the control current is generated by the lighting means from a predetermined desired value in accordance with the control deviation of the secondary current.
  • the flyback converter is described below as being fed by a DC voltage, but it is understood that this DC voltage can indeed have a certain ripple, depending on the quality of any input filters.
  • the control current when the control current is superposed with the collector current, the summation current flows through a shunt resistor, thus generating a voltage across the shunt resistor.
  • a turn-off circuit turns off the switching element when this voltage reaches a predetermined value. This happens, for example, when the summation current at least partially flows off via a zener diode when this predetermined value is reached, thereby triggering the switching element to be switched off.
  • the circuit is designed to generate at a control node a switching voltage for switching off the switching element in accordance with the collector current and the control current.
  • the control node is connected via a reference voltage element to the base of a control transistor, said control transistor in the on state, the switching element off.
  • the reference voltage element stabilizes the temperature dependence of the base-emitter voltage of the control transistor.
  • the reference voltage element may be a single Zener diode or another element or a reference voltage circuit, only the property is important that independent of the current flow through the element a predetermined voltage drops across the element, and that the temperature drift of the base-emitter voltage of the control transistor is compensated as possible.
  • FIG. 1 shows a summary of a circuit according to the invention.
  • a group of LEDs is summarized as a light source 1 and is powered by a secondary voltage 16 of a secondary winding 7C of a flyback transformer 7.
  • a primary winding or main winding 7A of the transformer 7 is fed by an optional rectifier and / or input filter circuit 4 from a voltage source 9.
  • a current I c through the main winding 7A is controllable by a switching element 8.
  • This current I c flows through a shunt resistor 15, whereby a corresponding voltage is produced, by means of which the switching element 8 can be controlled to control the flyback converter.
  • a zero voltage of the primary side is designated 0VP
  • a zero voltage of the galvanically isolated secondary side is OVS.
  • a start-up circuit 5 is used in a known manner for starting the circuit, and can also be used for network monitoring and as over- resp. Undervoltage protection may be formed.
  • the base circuit is to be adapted depending on the type of a transistor used as switching element 8.
  • An auxiliary circuit 6 can also be provided, depending on the type of switching element 8, in a known manner for commutating the transistor.
  • An auxiliary winding 7D of the transformer 7 is arranged to supply an auxiliary voltage source and to generate an auxiliary voltage 17 for supplying the current control.
  • the auxiliary winding 7D is oriented in the same direction as the secondary winding 7C, so that therefore the auxiliary voltage 17 is parallel, ie, proportional to the secondary voltage 16.
  • a control current I s from the auxiliary voltage source flows through a diode 22, an optocoupler 13, which controls the control current I s , and a resistor 12 to a control circuit 10, 11, 15, 23, 24 for driving the switching transistor 8.
  • An input of the optocoupler 13 is fed via a resistor 21 to a control voltage 20 of an amplifier circuit 2.
  • the amplifier circuit 2 generates the control voltage 20 in accordance with a desired value 19 and an actual value of the LED current I LED , corresponding to a voltage measured at a measuring resistor 18.
  • a voltage limiter 14 limits the auxiliary voltage 17, for example, by being connected in parallel with the output of the optocoupler 13. The voltage limitation is done by the voltage limiter 14 is conductive at a predetermined value of the auxiliary voltage 17 and thereby leads to the switching off of the switching transistor 8. As a result, the auxiliary voltage 17 no longer increases, and consequently not the same direction extending secondary voltage 16. Since the auxiliary voltage 17 is generated by a separate winding 7D on the transformer 7, this voltage limit can be galvanically connected to the primary-side control circuit of the switching transistor 8, and nevertheless be galvanically isolated from the secondary side.
  • FIG. 2 shows a detailed circuit according to the invention.
  • a supply voltage Vac is rectified via the diodes D1 to D4 and smoothed with the capacitor C1.
  • a DC voltage HV is formed.
  • This voltage can include a very large harmonic content (eg 100Hz at an input frequency of 50Hz).
  • a battery is also possible to supply the subsequent converter directly with DC voltage from eg a battery.
  • the controller supplies any LED array (in series or in parallel, or a combination of both) with DC power.
  • the LEDs LED1 to LEDX are shown as a series connection.
  • the light-emitting diode current I LED which must be regulated, is dependent on the type of light-emitting diode or its arrangement.
  • the voltage VN which is above the LED array is created, is not regulated. Their value depends on the LED arrangement.
  • the insulation between the supply voltage and the LED voltage should meet the requirements of the relevant safety standard. That that the primary side (with the zero voltage 0VP) is separated from the secondary side (with the zero voltage 0VS).
  • the circuit may be implemented without isolation, e.g. without the optocoupler described below.
  • a clock transistor T1 is shown as a bipolar transistor. Of course, it is also possible to use MOSFET or IGBT transistors. With resistor R2, a current flows into the base of T1. As soon as T1 turns on, its collector current flows into the W1 winding of the transformer of the flyback converter. Magnetic coupling also causes a current to flow in the W2 winding. This winding generates the base current. (A current flowing over R2 is only for starting). As long as the base current flows into the transistor, T1 remains on.
  • the diodes D6 and D7 prevent current flow in these windings.
  • the main current T1 collector current
  • the energy is thus stored in this inductance.
  • the transistor T1 does not switch off until the magnetic coupling between W1 and W2 is no longer present (ie when the magnetic circuit is saturated) or when the transistor T2 turns on or when this transistor T2 short-circuits the base of the transistor T1.
  • the transistor T2 turns on as soon as the resulting voltage on the shunt resistor R6 (which reflects the collector current) is greater than the sum of the Zener voltage of the Zener diode DZ2 and the base voltage of the transistor T2. As a result, therefore, the current flowing in the switching transistor current is limited and thus controls the output power of the single-ended flyback converter.
  • the collector current can be additionally limited or the output power controlled, since the energy stored in the W1 inductance depends on the maximum value of the collector current.
  • CP1 It is also possible to use a circuit (shown as CP1) to optimize the operation of the transistor T1 and to protect the transistor T1 and to support the commutation.
  • Such conventional circuits are built as combinations of diodes, capacitors and resistors and may be connected to the voltage HV and the voltage 0VP. By connecting (with resistor R3) to the base of transistor T2, it is also possible to speed up the shutdown.
  • the current flowing into the light-emitting diode array LED1 ... LEDX current I LED should be a certain value, which depends on the arrangement and the light-emitting diodes used.
  • the current I LED is measured. Shown is a measurement by a shunt resistor R14. Of course, other measuring methods are also possible.
  • the voltage on R14 reflects the current I LED . This voltage can be amplified by the amplifier A2 with the circuit resistors R12 and R11.
  • the amplified voltage representing the current I LED is compared to a reference voltage (VREF in the figure).
  • VREF acts as the setpoint
  • the output voltage of the amplifier A2 acts as the actual value in accordance with the LED current I LED .
  • the comparison between the setpoint and the actual value is implemented with the integrating amplifier A1. According to the components R10 and C5, the difference between the setpoint and the actual value is integrated with the amplifier A1.
  • a control loop with I control is shown.
  • Other types of control such as P, PI or PID control are of course possible.
  • the diode current of an opto-coupler OC1 is regulated, and thereby its output current, which flows in the resistor R7.
  • the winding W4 of the transformer W is magnetically coupled to the winding W1 similar to the winding W3 and supplies an auxiliary source.
  • An auxiliary voltage VAUX which arises on a capacitor C4 of the auxiliary source, changes like the voltage VN on the capacitor C3 (neglecting the ohmic voltage drops in the windings W3 and W4).
  • a current can flow through R7. As explained above, this current is controlled by the amplifier A1. This current continues to flow into resistor R6 (through R4) and / or into zener diode DZ2. Thus, this current adds up to the collector current of transistor T1, ie the main current of the single-ended flyback converter. Since the single ended flyback power depends on this current (main current + current in R7) and its peak value, respectively, it is possible to control the power of the converter by the current in R7. The larger the current flowing into the resistor R7, the smaller the peak value of the T1 collector current and thus also the output power of the converter. Overall, therefore, this scheme changes the performance of the single-ended flyback converter until the current flowing into the LED array has reached the desired set point in accordance with VREF.
  • the diode D8 which prevents current flow into the capacitor C4 at startup, as well as the optocoupler OC1, the Zener diode DZ1, and the resistor R7, may be connected in a different order.
  • the control loop through the amplifier A1 would require the maximum power because no current would flow through the optocoupler OC1. In this case, the voltages VN and VAUX could become too high.
  • the voltage VAUX can be limited. With DZ1, if the VAUX is too high, the current can flow into the resistor R7, even if no current flows through the optocoupler OC1 output transistor. Thus, the output power can be controlled.
  • VN and VAUX are parallel to each other, the limitation of VAUX also limits VN, thus protecting the circuit.

Landscapes

  • Dc-Dc Converters (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)

Claims (12)

  1. Circuit électronique d'alimentation d'un luminaire qui présente des diodes luminescentes comme moyens d'éclairage (1; LED), le circuit présentant :
    un convertisseur de blocage à cadence unique qui alimente les moyens d'éclairage (1; LED) en une tension de sortie (16; VN),
    le convertisseur de blocage à cadence unique présentant :
    - un transformateur (7; W) doté d'un enroulement principal (7A; W1) et d'un enroulement secondaire (7C; W3) couplé magnétiquement à l'enroulement principal (7A; W1),
    - un élément de commutation (8; T1) qui commande le courant qui traverse l'enroulement principal (7A; W1),
    le circuit présentant un circuit de régulation qui régule l'intensité du courant (ILED) qui traverse le moyen d'éclairage (1; LED), cette régulation du courant étant configurée :
    - pour détecter l'intensité du courant (ILED) qui traverse le moyen d'éclairage (1; LED),
    - pour moduler l'intensité du courant qui traverse l'enroulement principal (7A; W1), également appelé courant de collecteur (Ic), au moyen de l'élément de commutation (8; T1) et
    - pour ainsi réguler l'intensité du courant (ILED) qui traverse le moyen d'éclairage (1; LED) à une valeur de consigne prédéterminée,
    tandis que pour limiter la tension de sortie (16; VN) :
    - le transformateur (7; W) présente un enroulement auxiliaire (7D; W4) couplé magnétiquement à l'enroulement principal (7A; W1),
    - cet enroulement auxiliaire (7D; W4) est disposé de manière à former une tension auxiliaire (17; VAUX) qui s'étend parallèlement à la tension de sortie (16; VN), caractérisé en ce que
    - le convertisseur de blocage à cadence unique oscille librement et
    - en ce que le circuit est configuré pour limiter la tension auxiliaire (17; VAUX) par la réduction du courant de collecteur (Ic), en suite limitant aussi la tension de sortie (16; VN).
  2. Circuit électronique selon la revendication 1, dans lequel la tension auxiliaire (17; VAUX) pilote un courant de commande (Is), le circuit de régulation étant configuré :
    - pour superposer le courant de commande (Is) au courant de collecteur (Ic) qui traverse l'élément de commutation (8; T1) de manière à former un courant de somme et
    - pour débrancher l'élément de commutation (8; T1) en fonction de ce courant de somme.
  3. Circuit électronique selon la revendication 2, dans lequel, lors de la superposition du courant de commande (Is) au courant de collecteur (Ic), le courant de somme traverse une résistance de pontage (15; R6) et forme ainsi une tension aux bornes de la résistance de pontage (15; R6), un circuit de débranchement (10, 11, 23, T2, DZ2, R8) débranchant l'élément de commutation (8; T1) lorsque cette tension atteint une valeur prédéterminée.
  4. Circuit électronique selon les revendications 2 ou 3, le circuit étant configuré pour produire au moins une partie du courant de commande (Is) lorsque la tension auxiliaire (17; VAUX) dépasse une valeur prédéterminée.
  5. Circuit électronique selon la revendication 4, présentant une diode Zener (14; DZ1) disposée de manière à former la partie du courant de commande (Is) par prélèvement de la tension auxiliaire (17; VAUX).
  6. Circuit électronique selon l'une des revendications précédentes, le circuit étant configuré pour former un courant de commande (Is) qui module l'intensité du courant qui traverse l'enroulement principal (7A; W1) :
    - au moyen d'un circuit amplificateur (2; A1, A2, R10, R12, R13, R14, C5) qui détecte l'intensité du courant (ILED) qui traverse le moyen d'éclairage (1; LED) et qui forme un écart de réglage (20) par rapport à la valeur de consigne prédéterminée et
    - au moyen d'un opto-coupleur (13; OC1) qui commande le courant de commande (Is) en accord avec l'écart de réglage.
  7. Circuit électronique selon l'une des revendications précédentes, le circuit étant configuré pour former sur un noeud de commande (25) une tension de commutation (Us) qui débranche l'élément de commutation (8; T1) en fonction du courant de collecteur (Ic) et du courant de commande (Is), le noeud de commande (25) étant relié par un élément (11, DZ2) à tension de référence à la base d'un transistor de commande (10; T2), ce transistor de commande (10; T2) débranchant l'élément de commutation (8; T1) lorsqu'il est à l'état passant.
  8. Procédé d'alimentation d'un luminaire qui présente des diodes luminescentes comme moyens d'éclairage (1; LED) et dans lequel
    - un convertisseur de blocage à cadence unique alimente les moyens d'éclairage (1) à l'aide d'une tension de sortie (16; VN) grâce au fait que :
    - un transformateur (7; W) doté d'un enroulement principal (7A; W1) et d'un enroulement secondaire (7C; W3) couplé magnétiquement à l'enroulement principal (7A; W1) forme à partir de la tension d'alimentation une tension secondaire (16; VN) qui alimente les moyens d'éclairage (1; LED) et
    - un élément de commutation (8; T1) commande l'intensité du courant qui traverse l'enroulement principal (7A; W1),
    une régulation de l'intensité du courant (ILED) qui traverse le moyen d'éclairage (1; LED)
    - détectant l'intensité du courant (ILED) qui traverse le moyen d'éclairage (1; LED),
    - modulant l'intensité du courant qui traverse l'enroulement principal (7A; W1), également appelé courant de collecteur (Ic), au moyen de l'élément de commutation (8; T1) et en fonction de l'intensité détectée du courant (ILED) qui traverse le moyen d'éclairage (1; LED) et ainsi
    - régulant à une valeur de consigne prédéterminée l'intensité du courant (ILED) qui travers le moyen d'éclairage (1; LED),
    tandis que pour limiter la tension de sortie (16; VN),
    - le transformateur (7; W) délivre au moyen d'un enroulement auxiliaire (7D; W4) couplé magnétiquement à l'enroulement principal (7A; W1) une tension auxiliaire (17; VAUX) qui s'étend parallèlement à la tension de sortie (16; VN),
    caractérisé en ce que
    le convertisseur de blocage à cadence unique oscille librement et
    - en ce que la tension auxiliaire (17; VAUX) est limitée par réduction du courant de collecteur (Ic), ce qui limite également la tension de sortie (16; VN).
  9. Procédé selon la revendication 8, dans lequel la tension auxiliaire (17; VAUX) pilote un courant de commande (Is) et la régulation commande l'élément de commutation (8; T1) en fonction de la somme du courant de commande (Is) et du courant de collecteur (Ic) qui traverse l'élément de commutation (8; T1) .
  10. Procédé selon la revendication 9, dans lequel une première partie du courant de commande (Is) est formée en fonction de l'intensité du courant (ILED) qui traverse le moyen d'éclairage (1; LED) et dans lequel une deuxième partie du courant de commande (Is) est formée lorsque la tension auxiliaire (17; VAUX) dépasse une valeur prédéterminée.
  11. Procédé selon les revendications 9 ou 10, dans lequel la régulation forme dans une résistance de pontage (15; R6) la somme du courant de commande (Is) et du courant de collecteur (Ic) qui traverse l'élément de commutation (8; T1) et débranche l'élément de commutation (8; T1) lorsque la tension aux bornes de la résistance de pontage (15; R6) dépasse une valeur prédéterminée.
  12. Procédé selon l'une des revendications 8 à 11, dans lequel une tension de commutation (Us) est formée en un noeud de commande (25) en fonction du courant de collecteur (Ic) et du courant de commande (Is) et une tension de base est appliquée par l'intermédiaire d'un élément (11; DZ2) à tension de référence sur la base d'un transistor de commande (10; T2) à partir de cette tension de commutation (Us), ce transistor de commande (10; T2) débranchant l'élément de commutation (8; T1) lorsqu'il est à l'état passant.
EP09405060A 2008-04-03 2009-04-01 Commutation et procédé d'alimentation d'une lampe DEL Active EP2107859B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH5112008 2008-04-03

Publications (2)

Publication Number Publication Date
EP2107859A1 EP2107859A1 (fr) 2009-10-07
EP2107859B1 true EP2107859B1 (fr) 2011-03-23

Family

ID=39708718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09405060A Active EP2107859B1 (fr) 2008-04-03 2009-04-01 Commutation et procédé d'alimentation d'une lampe DEL

Country Status (2)

Country Link
EP (1) EP2107859B1 (fr)
AT (1) ATE503367T1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2005269C2 (en) * 2010-08-25 2012-02-28 Online Services B V High-frequency switching-mode power supply for a dimming circuit.
WO2014174159A1 (fr) 2013-04-24 2014-10-30 Societe D'etudes Et D'economies En Eclairage, Se3 Dispositif d'alimentation en courant continu d'un ensemble de dispositifs d'éclairage à leds utilisés dans l'éclairage industriel et l'éclairage tertiaire
DE102014009567B4 (de) 2014-06-27 2016-01-14 Diehl Aerospace Gmbh Beleuchtungsvorrichtung für eine Wechselspannungsversorgung sowie Flugzeug mit der Beleuchtungsvorrichtung
DE102015208774A1 (de) * 2015-05-12 2016-12-01 Tridonic Gmbh & Co Kg Vorrichtung mit getaktetem Wandler zum Betrieb von Leuchtmitteln
DE102017109325B4 (de) * 2017-05-02 2020-01-16 Vossloh-Schwabe Deutschland Gmbh Betriebsschaltung zum Betreiben einer Leuchtmittelanordnung
DE102018119017A1 (de) * 2018-08-06 2020-02-06 Tridonic Gmbh & Co Kg Synchrone Sperrwandlerschaltung zum Betrieb einer Leuchtmittelstrecke

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5517397A (en) * 1994-12-06 1996-05-14 Astec International, Ltd. Flyback power converter with spike compensator circuit
JP4240546B2 (ja) 1997-08-01 2009-03-18 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 回路装置
CA2343062A1 (fr) 1999-07-07 2001-01-18 Koninklijke Philips Electronics N.V. Convertisseur indirect utilise comme circuit de commande de del
US6577512B2 (en) * 2001-05-25 2003-06-10 Koninklijke Philips Electronics N.V. Power supply for LEDs
US7731384B2 (en) * 2005-12-06 2010-06-08 Dialight Corporation Method and apparatus for providing an LED light for use in hazardous locations

Also Published As

Publication number Publication date
ATE503367T1 (de) 2011-04-15
EP2107859A1 (fr) 2009-10-07

Similar Documents

Publication Publication Date Title
DE112011101247B4 (de) Modulares LED-Beleuchtungssystem mit Notlichtfunktion
EP2107859B1 (fr) Commutation et procédé d'alimentation d'une lampe DEL
DE112011101246B4 (de) Modulares LED-Beleuchtungssystem mit Notlichtfunktion
EP2888800B1 (fr) Appareil de lumière de secours
DE60120800T2 (de) Schaltnetzteileinheit
DE19545154C2 (de) Stromversorgungseinrichtung
DE202007019413U1 (de) Primärseitig eingestelltes Stromversorgungssystem mit Ausgabe eines konstanten Stroms
DE69632439T2 (de) Unterbrechungsfreies Schaltreglersystem
DE10330605A1 (de) Schaltnetzteil
EP2462686B1 (fr) Dispositif de chargement pour charger une batterie d'accumulateurs
WO2011113951A2 (fr) Système d'éclairage à del modulaire
DE10356515A1 (de) Antriebssystem
EP1867035B1 (fr) Procède de fonctionnement d'une alimentation a découpage avec récupération d'énergie de diffusion cote primaire
DE102017206121A1 (de) Schaltleistungsumsetzer mit effizienter VCC-Ladung
DE3101375C2 (de) Schaltungsanordnung zur geregelten Speisung eines Verbrauchers
DE102018100709A1 (de) Leistungswandler-Steuerung, Leistungswandler und entsprechendes Verfahren
DE102004061341A1 (de) Stromversorgung
DE102016110427A1 (de) Schaltnetzteil
WO2000017992A1 (fr) Alimentation a decoupage
DE2919905A1 (de) Schaltnetzteil nach dem sperrwandleroder flusswandlerprinzip
DE112016001109B4 (de) Resonanzwandler mit einem transformator mit mittelpunktanzapfung
DE102014219787A1 (de) Schaltnetzteil mit zumindest einem Leistungsteil und zumindest einem Hilfsnetzteil
LU101871B1 (de) Stromversorgung mit zwei primärseitigen Leistungsstufen
EP3231253B1 (fr) Circuit d'attaque à commande de démarrage llc
EP0610539B1 (fr) Convertisseur avec un circuit de contrÔle que est alimenté de l'entrée et d'une boucle de rétro-action

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

17P Request for examination filed

Effective date: 20100406

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: H05B 33/08 20060101AFI20100525BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 502009000464

Country of ref document: DE

Date of ref document: 20110505

Kind code of ref document: P

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502009000464

Country of ref document: DE

Effective date: 20110505

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: FREI PATENTANWALTSBUERO AG

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: POLYNOM AG

Free format text: SANDER ELEKTRONIK AG#STAUSEESTRASSE 73#5314 KLEINDOETTINGEN (CH) -TRANSFER TO- POLYNOM AG#STAUSEESTRASSE 73#5314 KLEINDOETTINGEN (CH)

REG Reference to a national code

Ref country code: NL

Ref legal event code: TD

Effective date: 20110708

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110624

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20110323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110623

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110623

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502009000464

Country of ref document: DE

Representative=s name: OSTERTAG & PARTNER PATENTANWAELTE, DE

Effective date: 20110727

Ref country code: DE

Ref legal event code: R081

Ref document number: 502009000464

Country of ref document: DE

Owner name: POLYNOM AG, CH

Free format text: FORMER OWNER: SANDER ELEKTRONIK AG, KLEINDOETTINGEN, CH

Effective date: 20110727

Ref country code: DE

Ref legal event code: R082

Ref document number: 502009000464

Country of ref document: DE

Representative=s name: OSTERTAG & PARTNER, PATENTANWAELTE MBB, DE

Effective date: 20110727

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

Owner name: POLYNOM AG, CH

Effective date: 20110905

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110725

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110704

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110430

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110723

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

26N No opposition filed

Effective date: 20111227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009000464

Country of ref document: DE

Effective date: 20111227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110323

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 503367

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140401

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: NEW ADDRESS: POSTFACH, 8032 ZUERICH (CH)

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502009000464

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: H05B0033080000

Ipc: H05B0045000000

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230424

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20230419

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240418

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20240418

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240418

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20240501

Year of fee payment: 16