WO2010112238A1 - Circuit d'attaque pour del - Google Patents

Circuit d'attaque pour del Download PDF

Info

Publication number
WO2010112238A1
WO2010112238A1 PCT/EP2010/002134 EP2010002134W WO2010112238A1 WO 2010112238 A1 WO2010112238 A1 WO 2010112238A1 EP 2010002134 W EP2010002134 W EP 2010002134W WO 2010112238 A1 WO2010112238 A1 WO 2010112238A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
driver circuit
switch
circuit
current
Prior art date
Application number
PCT/EP2010/002134
Other languages
German (de)
English (en)
Inventor
Michael Zimmermann
Eduardo Pereira
Original Assignee
Tridonicatco Gmbh & Co Kg
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 Tridonicatco Gmbh & Co Kg filed Critical Tridonicatco Gmbh & Co Kg
Priority to EP10725007.8A priority Critical patent/EP2425681B1/fr
Priority to CN201080024367.7A priority patent/CN102450100B/zh
Publication of WO2010112238A1 publication Critical patent/WO2010112238A1/fr

Links

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]
    • 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 a driver circuit for an LED according to the preamble of patent claim 1 and a method for driving an LED according to the preamble of patent claim 19.
  • Such driver circuits are used in lighting systems to achieve a colored or flat lighting of rooms, paths or escape routes.
  • the bulbs are driven by operating devices and activated as needed.
  • organic or inorganic light emitting diodes LED are used as the light source.
  • light-emitting diodes are also increasingly being used as the light source.
  • the efficiency and luminous efficacy of light-emitting diodes is being increased more and more so that they are already being used in various general lighting applications.
  • light emitting diodes are point sources of light and emit highly concentrated light.
  • the solution according to the invention for a device for operating LEDs is based on the idea that a driver circuit for an LED has a connection for a mains voltage, a filter circuit and a rectifier, an inductance and a switch.
  • the inductor has a primary winding and a secondary winding coupled thereto.
  • the inductor is magnetized when the switch is closed, and the inductor is demagnetized when the switch is open, and at least during the demagnetization phase, the current through the inductor feeds the LED.
  • the switch-off duration of the switch may depend on the detected amplitude of the current through the LED.
  • the switch-off duration of the switch may additionally or alternatively be dependent on the degaussing current.
  • bypass circuit connected through a rectifier to the mains voltage terminal and deactivated when current flows through the rectifier into the inductor and the switch and / or the latch.
  • a bypass circuit is disabled whenever a current flows into the driver circuit for an LED. A current in the driver circuit for an LED flows whenever over the
  • Rectifier a current flows through the inductor and the switch or into the buffer element.
  • a decoupling element or a current monitoring element can serve as a current detector.
  • the rectifier via which the bypass circuit is connected to the connection for a mains voltage, can either be the same rectifier, via which a current flows into the inductance and the switch or the buffer element, or there can be another rectifier in parallel to this first rectifier be.
  • the solution according to the invention also relates to a luminous means for an LED, with a base for the use of the luminous means in a commercial lamp base, comprising a driver circuit according to the invention are formed.
  • the invention also relates to a method for driving an LED, wherein the LED is driven via a driver circuit, and the driver circuit is fed from a terminal for a mains voltage via a filter circuit (L1) and a rectifier (GR1), and the driver circuit is a buffer element, an inductance (L2) and a switch (S1), wherein a bypass circuit (R40, Q4) present at the output of the rectifier (GR1) is deactivated when a current flows via the rectifier (GR1) in drive circuit.
  • L1 filter circuit
  • GR1 rectifier
  • S1 switch
  • FIG. 1 shows a basic embodiment of a device according to the invention for operating LED.
  • FIG. 2 shows an embodiment of a device according to the invention
  • Fig. 3 shows a further embodiment of an inventive
  • Fig. 4 shows a further embodiment of an inventive
  • the driver circuit for an LED has a terminal for a mains voltage, a filter circuit (L1) and a rectifier (GR1), an inductance (L2) and a switch (S1).
  • the rectifier (GR1) is followed by a buffer element (C1), this preferably only for filtering out high-frequency
  • the buffer element (C1) may be a capacitor, preferably a filter capacitor.
  • the inductance (L2) preferably has a primary winding (L2p) and a secondary winding (L2s) coupled thereto.
  • the inductance (L2) is magnetized when the switch is closed, and the inductance (L2) is demagnetized when the switch S1 is opened, and at least during the phase of
  • Demagnetization feeds the current through the inductor (L2) to the LED.
  • the switch S1 is always opened only when the current through the switch S1 has reached a predetermined threshold.
  • the current through the switch S1 can be detected by means of a current detection Ip (for example, a current shunt).
  • the current detection Ip can also be done directly at the switch S1 (for example, in a so-called. SENSE FET, which contains an integrated monitoring of the current).
  • no time limit of the switch-on time duration is predetermined, but an infinite switch-on time of the switch S1 is also possible.
  • the turn-off duration of the switch S1 may be dependent on the detected amplitude of the current through the LED.
  • the feedback of the detection of the amplitude of the current through the LED is carried out electrically isolated (ie, the control loop for the dependence of the switch-off of the switch S1).
  • the switch-off duration can, however, also be fixed, for example (fixed).
  • the switch-off duration of the switch S1 can, for example, also be directly or indirectly dependent on the degaussing current.
  • the switch S1 can be switched on whenever a demagnetization of the inductance (L2) is detected. However, a switch-on can always take place only when the inductance (L2) is de-magnetized, and a certain period of time can also be between the time of demagnetization and the restart.
  • the driver circuit may be connected to a commercial dimmer, and the switch S1 may be closed during the phases in which the dimmer cuts off a portion of the phase to pass a residual current across the inductor and the switch S1 and thus load the dimmer , This residual current through the switch S1 is preferably limited by the predetermined threshold in order to avoid overloading of the switch S1.
  • the inductance (L2) may be transformer (L2p, L2s), which serves as a potential-separating member.
  • the driver circuit can be transmitted by high-frequency clocking of the switch (S1) energy via the inductance (L2) to the light source (LED).
  • the switch (S1) may be, for example, a field-effect transistor, such as a MOSFET, or a bipolar transistor.
  • the monitoring of the current amplitude of the supply voltage Vin can be done by a monitoring circuit U1.
  • the monitoring circuit U1 can be, for example, an integrated circuit (for example an ASIC, microcontroller or DSP). Depending on the monitoring of the current amplitude of the supply voltage Vin, the monitoring circuit U1 can specify the threshold value for the opening of the switch S1.
  • the threshold value is preferably specified as already mentioned on the basis of the monitoring of the current amplitude of the supply voltage Vin.
  • only two values can be preset as a threshold value, the lower threshold value being given below a specific value when a supply voltage Vin is present, and the upper threshold value being specified when the supply voltage Vin is exceeded.
  • a plurality of threshold values are stored in a kind of table and these are specified according to the specifications of the table for different voltage ranges of the supply voltage Vin.
  • the monitoring circuit UI can detect, for example, the intermediate storage element C1 or the (positive) output of the rectifier GR1 or, if present, before the decoupling element or the voltage difference across the
  • the voltage is measured by means of a voltage divider which picks up the voltage across the buffer element C1 or at the (positive) output of the rectifier GR1 and reduces it to a potential which can be evaluated by the monitoring circuit U1.
  • the monitoring circuit U1 can also be designed (for example in high-voltage technology) so that it can directly detect the voltage across the buffer element C1 or at the (positive) output of the rectifier GR1.
  • the monitoring circuit U1 can also control the switch S1.
  • the monitoring circuit U1 can, on the one hand, monitor the current through the switch S1 by means of a current detection Ip (for example a current shunt) and, in addition, monitor the current amplitude of the supply voltage Vin.
  • the control of the switch (S1) may be dependent on further monitoring, for example, by monitoring the demagnetization of the inductance L2, the detected voltage of the LED or the detected amplitude of the current through the LED.
  • all feedbacks or monitors on the secondary side are electrically isolated, i. the feedback of the detected on the output side (secondary side) signals to the monitoring circuit U1 via a potential separation (for example by means of opto-coupler or transformer).
  • the switch-off duration of the switch S1 depends on the detected amplitude of the current through the LED.
  • the predetermined threshold may depend on the current amplitude of the supply voltage. In a simple variant, for example, if the supply voltage exceeds a certain value, an increase of the threshold value can take place.
  • the secondary winding L2s magnetically coupled to the primary winding L2p is connected to a rectifier (D2) and a smoothing circuit (C2) to which the LED can be connected.
  • the rectifier (D2) on the secondary winding L2s of the transformer can be formed by a diode D2 or by a full-wave rectifier.
  • the inductance L2 can feed a smoothing circuit during its demagnetization, this smoothing circuit can be, for example, a capacitor C2 or an LC (capacitor inductance C2-L3) or CLC (capacitor-inductance capacitor C2-L3-C3) filter.
  • the secondary side with the smoothing circuit (C2) is preferably designed so that a constant current supply of the LED is made possible.
  • the driver circuit with the monitoring circuit U1 can also be designed so that the switch (S1) is also kept closed when the light-emitting means (LED) is not in operation or is only supplied with a supply voltage Vin which is far below the nominal supply voltage Vin is, and always opened only when the current through the switch (S1) has reached a predetermined threshold.
  • the switch (S1) can be kept in the closed state, unless it is turned off by a corresponding active control.
  • the active drive to turn off (open) the switch (S1) by bridging the hold circuit or by lowering the drive level for the control terminal of the switch (S1).
  • the holding circuit can also be designed such that, as soon as a low voltage is present at the input of the driver circuit, it already keeps the switch (S1) closed, while the driver circuit does not yet start up.
  • a light source for an LED can be formed, with a base for use of the light source in a commercially available lamp base, comprising a driver circuit according to the invention.
  • the driver circuit agrees with the basic circuit forth with that of FIG. 1 and has, as already explained in Fig. 1, a connection for a mains voltage to which a rectifier GR1 and a
  • the inductance L2 is magnetized when the switch S1 is closed, and the inductance L2 is demagnetized when the
  • Switch S1 is open, and at least during the phase of
  • Demagnetization feeds the current through the inductor L2, the LED.
  • the driver circuit can be constructed as a boost converter circuit or as a flyback converter circuit.
  • the flyback converter circuit or the boost converter circuit is designed to be isolated, ie, the clocked inductance L2 of the driver circuit has a secondary winding L2s, which is magnetically coupled to the primary winding L2p of the inductance L2.
  • a current detector preferably a unidirectional decoupling element, is included between the rectifier GR1 and the latching element C1.
  • the decoupling element can be formed as a current detector by a diode D1.
  • a full-wave rectifier DV1 as decoupling element.
  • the current detector By means of the current detector, the current flow through the rectifier (GR1) in the inductance (L2) and the switch (S1) and / or the buffer (filter capacitor) (C1) can be monitored.
  • bypass circuit R40, Q4 which is deactivated when the current detector (for example the decoupling element) passes a current.
  • a bypass circuit (R40, Q4) is always activated when a current flows into the driver circuit for an LED.
  • a current in the driver circuit for an LED always flows when a current flows through the rectifier GR1 via the inductance L2 and the switch S1 or into the intermediate storage element.
  • the decoupling member thus acts as a current detector.
  • This monitoring circuit U1 may be, for example, an integrated circuit.
  • the monitoring circuit U1 may activate or deactivate the bypass circuit (R40, Q4) depending on the monitoring of the decoupling element as a current detector.
  • the monitoring circuit U1 can detect, for example, only the voltage before the decoupling element or the voltage difference across the decoupling element (preferably by a respective voltage measurement in front of and behind the decoupling element).
  • the monitoring circuit U1 can also control the switch S1.
  • the decoupling element as a current detector can be formed by a diode D1. However, it is also possible to use a full-wave rectifier DV1 as decoupling element. By means of the current detector, the current flow through the rectifier (GR1) in the inductance (L2) and the switch (S1) and / or the filter capacitor (C1) can be monitored.
  • the driver circuit may be connected to a commercial dimmer, and the bypass circuit (R40, Q4) may be activated during phases in which the dimmer cuts off a portion of the phase to provide residual current through the bypass circuit (R40, Q4) and the inductor L2 and to guide the switch S1 and thus to load the dimmer.
  • the buffer element can be formed, for example, by a valley FiII circuit (FIG. 3) or else by a filter capacitor (smoothing capacitor) C1 (FIG. 2).
  • the switch S1 can be switched on whenever a demagnetization of the inductance L2 is detected. However, a switch-on can always take place only when the inductance L2 is de-magnetized, and a certain period of time can also be between the time of demagnetization and the restarting.
  • the switch S1 can be driven, for example, by an integrated circuit for a power factor correction.
  • the monitoring circuit U1 may include a power factor correction control circuit.
  • the inductance L2 may be a transformer L2p, L2s, which serves as a potential-separating member.
  • the primary winding L2p of the transformer is connected in series with the switch S1.
  • the secondary winding L2s magnetically coupled to the primary winding L2p is connected to a rectifier (D2) and a smoothing circuit (C2) to which the LED can be connected.
  • the rectifier (D2) on the secondary winding L2s of the transformer can be formed by a diode D2 or by a full-wave rectifier.
  • the on and / or off duration of the switch S1 may be dependent on the detected amplitude of the current through the LED. Preferably, however, the switch-on and / or switch-off duration of the switch S1 does not decrease to zero or close to zero. In a simple variant, for example, a limitation of the current through the LED can be done by limiting the duty cycle.
  • the inductance L2 can feed a smoothing circuit (C2) during its demagnetization, this smoothing circuit (C2) can be, for example, a capacitor C2 or an LC or CLC filter.
  • the bypass circuit (R40, Q4) may be formed by a resistor R40 in series with a switch Q4.
  • the bypass circuit can also have a current source (constant current source) as a bridging circuit.
  • a current source constant current source
  • FIG. 1 An example of a current source (constant current source) is shown in FIG.
  • the current detector is formed here by current monitoring element R34.
  • the monitoring circuit U1 formed by a transistor Q5 and a resistor R30 connected to an internal transistor Q5 can be used
  • Power supply Vcc is connected) enable or disable the bypass circuit. As soon as sufficient current flow through the current detector (ie current monitor R34) is detected, the bypass circuit is deactivated.
  • the current flow through the current monitor R34 is the current that flows through the rectifier (GR1) into the inductance (L2) and the switch (S1) or the buffer element.
  • the monitoring circuit 111 is constructed discretely, but it can also be designed as an integrated circuit, as in the examples of FIGS. 2 and 3.
  • an integrated circuit monitoring circuit U1 can more
  • the bypass circuit is shown in FIG. 4 by a current source
  • the current source (Constant current source) formed.
  • the current source (constant current source) is formed in detail by the transistors Q4 and Q6 and the resistors R40, R27 and R29.
  • the bypass circuit can be connected via a full-wave rectifier D3 via the filter circuit L2 to the connection for a mains voltage, parallel to the rectifier GR1.
  • the rectifier via which the bypass circuit (R40, Q4) is connected to the connection for a mains voltage, can either be the same rectifier, via which a current flows into the inductance and the switch or the buffer element (ie the rectifier GR1, see FIG 2 and 3), or another rectifier D3 may be present in parallel with this first rectifier GR1 (see Fig. 4).
  • a method for driving an LED is enabled, wherein the LED is driven via a driver circuit, and the driver circuit is fed from a terminal for a mains voltage via a filter circuit (L1) and a rectifier (GR1), and the driver circuit a latch element, a Inductance (L2) and a switch (S1), and wherein a bypass circuit (R40, Q4) provided at the output of the rectifier (GR1) is deactivated when a current flows through the rectifier (GR1) in driving circuit.
  • a light source for an LED can be constructed, with a base for the use of the light source in a commercially available lamp base, comprising a driver circuit according to the invention.
  • the embodiment of FIG. 1 can also be combined with that of FIGS. 2 to 4.
  • the switch S1 can always remain closed as long as the current through the switch S1 has not reached a predetermined threshold value, in addition an activatable bridging circuit (R40, Q4) can be present, which is activated only if a sufficient current flow is detected by the current detector has been.
  • the bypass circuit (R40, Q4) can be designed to generate only small additional losses in its activation (as compared to a solution without a second current path through the device) Switch (S1)).
  • a driver circuit for a luminous means preferably for an LED, comprising a connection for a mains voltage, a rectifier GR1 and a filter circuit, a buffer element (C1), an inductance L2 and a switch S1 can also be formed, wherein the high-frequency clocking of the Switch S1 energy can be transmitted via the inductance to the lamp, and at the output of the rectifier GR1, a bypass circuit (R40, Q4) may be arranged such that it is activated when the light-emitting device (LED) is not in operation.
  • a bypass circuit R40, Q4
  • the bridging circuit (R40, Q4) can thus be designed so that it is only deactivated when the light source (LED) is operated.
  • the bridging circuit (R40, Q4) may be connected, for example, so that without activation (activation) of this bypass circuit (R40, Q4), a current flow through them, as soon as a voltage across the bypass circuit (R40, Q4) is applied.
  • the bridging circuit (R40, Q4) can also be embodied such that, as soon as a low voltage is present at the input of the driver circuit, it already keeps the switch (S1) closed while the driver circuit per se does not yet start up.
  • bypass circuit R40, Q4 can only be deactivated in the phases when a current flow through the current detector is detected.
  • the bypass circuit (R40, Q4) has a switchable element, such as a transistor (Q4), which can be driven and thus disable the bypass circuit (R40, Q4).
  • the deactivation of the bypass circuit (R40, Q4) can be done by the monitoring circuit U1.
  • the lamp (LED) is to understand that the driver circuit for driving and powering the LED is not in operation. In this state, it is possible that a low supply voltage Vin is present, but that is not sufficient that the driver circuit starts to power the LED, and in particular no high-frequency clocking of the switch (S1) takes place in this state by the driver circuit.
  • the switch (S1) can be switched on by the driver circuit, but there is no fast (high-frequency) change between switching the switch (S1) on and off.)
  • the applied supply voltage Vin may be sufficient to drive certain parts of the driver circuit as the bypass circuit or the hold circuit to activate.
  • the lighting means may, for example, also be a gas discharge lamp.
  • a light source for an LED with a base for use of the light source in a commercial lamp base, comprising a driver circuit according to the invention.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention concerne un circuit d'attaque pour DEL, qui présente une borne pour une tension de réseau, un redresseur pour un circuit filtrant, un élément de stockage intermédiaire, une inductance et un commutateur. L'inductance est magnétisée lorsque le commutateur est fermé, et elle est démagnétisée lorsque le commutateur est ouvert, et au moins pendant la phase de démagnétisation, la DEL est alimentée en courant par le biais de l'inductance. Un détecteur de courant est placé entre le redresseur et l'élément de stockage intermédiaire, et il existe à la sortie du redresseur un circuit de pontage qui est désactivé lorsque le détecteur de courant laisse passer un courant.
PCT/EP2010/002134 2009-04-03 2010-04-02 Circuit d'attaque pour del WO2010112238A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10725007.8A EP2425681B1 (fr) 2009-04-03 2010-04-02 Circuit de pilotage pour un del
CN201080024367.7A CN102450100B (zh) 2009-04-03 2010-04-02 Led驱动电路

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT2142009 2009-04-03
ATGM214/2009 2009-04-03
AT17692009 2009-11-09
ATA1769/2009 2009-11-09

Publications (1)

Publication Number Publication Date
WO2010112238A1 true WO2010112238A1 (fr) 2010-10-07

Family

ID=42562774

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/002134 WO2010112238A1 (fr) 2009-04-03 2010-04-02 Circuit d'attaque pour del

Country Status (3)

Country Link
EP (1) EP2425681B1 (fr)
CN (1) CN102450100B (fr)
WO (1) WO2010112238A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2557692A1 (fr) * 2011-08-09 2013-02-13 LG Innotek Co., Ltd. Circuit de chemin de décharge d'une borne d'entrée pour un circuit intégré de commande
WO2013148099A1 (fr) * 2012-03-27 2013-10-03 General Electric Company Lampe comprenant des dispositifs de lumière à haute efficacité
EP2678189A1 (fr) * 2011-03-24 2014-01-01 LG Innotek Co., Ltd. Circuit de décharge à l'étage d'entrée d'un ci d'attaque
AT14041U1 (de) * 2013-04-30 2015-03-15 Tridonic Gmbh & Co Kg Betriebsschaltung für Leuchtdioden mit Filterelement
DE102016221741A1 (de) * 2016-11-07 2018-05-09 Tridonic Gmbh & Co Kg Treiber für eine Leuchtdiode und Verfahren

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070182347A1 (en) * 2006-01-20 2007-08-09 Exclara Inc. Impedance matching circuit for current regulation of solid state lighting
US20070267984A1 (en) * 2006-05-22 2007-11-22 Chris Peng System and method for selectively dimming an LED

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4236894B2 (ja) * 2002-10-08 2009-03-11 株式会社小糸製作所 点灯回路
EP1752022A1 (fr) * 2004-05-19 2007-02-14 Polybrite International, Inc. Circuit de gradation pour del comprenant un moyen permettant de maintenir le courant dans un triac
JP2006164727A (ja) * 2004-12-07 2006-06-22 Koito Mfg Co Ltd 車両用灯具の点灯制御回路
JP2007080771A (ja) * 2005-09-16 2007-03-29 Nec Lighting Ltd 照明用低圧電源回路、照明装置および照明用低圧電源出力方法
EP2247162B1 (fr) * 2007-06-15 2016-01-06 Tridonic GmbH & Co KG Appareil pour opérer une source lumineuse, notamment une DEL

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070182347A1 (en) * 2006-01-20 2007-08-09 Exclara Inc. Impedance matching circuit for current regulation of solid state lighting
US20070267984A1 (en) * 2006-05-22 2007-11-22 Chris Peng System and method for selectively dimming an LED

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2678189A1 (fr) * 2011-03-24 2014-01-01 LG Innotek Co., Ltd. Circuit de décharge à l'étage d'entrée d'un ci d'attaque
EP2678189A4 (fr) * 2011-03-24 2014-09-03 Lg Innotek Co Ltd Circuit de décharge à l'étage d'entrée d'un ci d'attaque
US9481289B2 (en) 2011-03-24 2016-11-01 Lg Innotek Co., Ltd. Circuit for discharging at input stage of a driver IC
EP2557692A1 (fr) * 2011-08-09 2013-02-13 LG Innotek Co., Ltd. Circuit de chemin de décharge d'une borne d'entrée pour un circuit intégré de commande
WO2013148099A1 (fr) * 2012-03-27 2013-10-03 General Electric Company Lampe comprenant des dispositifs de lumière à haute efficacité
AT14041U1 (de) * 2013-04-30 2015-03-15 Tridonic Gmbh & Co Kg Betriebsschaltung für Leuchtdioden mit Filterelement
DE102016221741A1 (de) * 2016-11-07 2018-05-09 Tridonic Gmbh & Co Kg Treiber für eine Leuchtdiode und Verfahren
AT17368U1 (de) * 2016-11-07 2022-02-15 Tridonic Gmbh & Co Kg Treiber für eine Leuchtdiode und Verfahren

Also Published As

Publication number Publication date
CN102450100B (zh) 2015-07-22
EP2425681A1 (fr) 2012-03-07
CN102450100A (zh) 2012-05-09
EP2425681B1 (fr) 2017-07-19

Similar Documents

Publication Publication Date Title
DE112015006564T5 (de) System und Verfahren zur Steuerung von Festkörperlampen
EP2829157B1 (fr) Circuit de commande pour diodes électroluminescentes avec signal de variation de lumière issu d`un signal en trains d'impulsions modulés a haute fréquence, avec des fréquences accordées
DE102011007229A1 (de) Dimmbare LED-Stromversorgung mit Leistungsfaktorsteuerung
EP2425681B1 (fr) Circuit de pilotage pour un del
DE112014002232B4 (de) Betriebsschaltung für LED
EP2796006A1 (fr) Appareil de fonctionnement à correction du facteur de puissance et limitation d'ondulation par changement de fonctionnement
EP2837265B1 (fr) Transducteur pour un moyen d'éclairage, convertisseur del et procédé pour faire fonctionner un transducteur résonant llc
WO2012045475A1 (fr) Circuit de fonctionnement pour diodes électroluminescentes
EP2523533B1 (fr) Circuit de ballast pour diodes luminescentes
EP2952061B1 (fr) Dispositif de fonctionnement de del
EP2425679B1 (fr) Circuit d'excitation pour une led
EP2420108B1 (fr) Circuit de commande pour leds
AT12495U1 (de) Fehlererkennung für leuchtdioden
DE102013211767A1 (de) Betriebsschaltung für leuchtdioden
DE102017119999B4 (de) Verfahren zur Vermeidung des Überschreitens von Stromgrenzwerten in einer lichtemittierenden Diode sowie Steuereinrichtung zur Durchführung des Verfahrens
DE102015210510A1 (de) Schaltungsanordnung zum Betreiben mindestens eines ersten und eines zweiten LED-Strangs an einer Wechsel- oder einer Gleichspannungsquelle
EP2992738B1 (fr) Reconnaissance d'erreur pour del
EP2510750B1 (fr) Circuit d'excitation pour une del
DE102015217146A1 (de) Getaktete Sperrwandlerschaltung
DE202018100418U1 (de) Schaltungsanordnung zum Betreiben eines Leuchtmittels
DE202016107324U1 (de) Schaltungsanordnung zum Betreiben von Leuchtmitteln
US20220338321A1 (en) Solid-State Lighting With A Luminaire Phase-Dimming Driver
DE102011086446A1 (de) Benutzersteuerung für eine LED
AT13981U1 (de) Betriebsschaltung für Leuchtdioden
WO2011130770A1 (fr) Ballast pour diodes électroluminescentes

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201080024367.7

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10725007

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2010725007

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2010725007

Country of ref document: EP