EP1233654A1 - Circuit et procédé d'adaptation de la courbe caractéristique d'une diode LED - Google Patents

Circuit et procédé d'adaptation de la courbe caractéristique d'une diode LED Download PDF

Info

Publication number
EP1233654A1
EP1233654A1 EP02090012A EP02090012A EP1233654A1 EP 1233654 A1 EP1233654 A1 EP 1233654A1 EP 02090012 A EP02090012 A EP 02090012A EP 02090012 A EP02090012 A EP 02090012A EP 1233654 A1 EP1233654 A1 EP 1233654A1
Authority
EP
European Patent Office
Prior art keywords
arrangement
led
current
light
emitting diode
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.)
Ceased
Application number
EP02090012A
Other languages
German (de)
English (en)
Inventor
Dirk Zimmermann
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1233654A1 publication Critical patent/EP1233654A1/fr
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
    • B61L5/1809—Daylight signals
    • B61L5/1881—Wiring diagrams for power supply, control or testing
    • 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]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • 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]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/52—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a parallel array of LEDs

Definitions

  • the invention relates to a circuit arrangement for Characteristic curve adaptation of a light-emitting diode arrangement and to a Light-emitting diode arrangement, in particular a light-emitting diode arrangement for a railway signal system.
  • Light-emitting diodes (hereinafter referred to as LED) meanwhile reached a brightness that their use in Enable traffic signal systems.
  • LED Light-emitting diodes
  • Traffic lights with signaling devices that act as light emitting Elements have light emitting diodes.
  • railway light signal systems in which LEDs are used as light emitters. This is about but it is only a matter of complete systems First installation of signal systems. Here the operating conditions and the peripherals for control and Monitoring optimally to the requirements of LED technology can be set.
  • the peripheral ones are usually Conditions such as the energy supply parameters fixed and specifically designed for conventional Types of signal lamps. Additional problems arise if the feeding conditions, that is, the conditions of the Supply of electrical energy, on compliance with certain Parameters are monitored and non-compliance the conditions of safety-relevant reactions of the system must be done.
  • the object of the present invention is a Develop circuitry with the help of signal lamps conventional type to be replaced by LED arrangements and at the same time the remaining components of the underlying Leave the signal system largely unchanged.
  • circuit arrangement with the Features of claim 1 solved.
  • Preferred further training the circuit arrangement are the subject of the dependent claims 2 to 4.
  • An LED signal lamp with a Circuit arrangement according to the invention is the subject of 5.
  • a particularly preferred light signal arrangement is the subject of claim 6 and a particularly preferred use of the circuit arrangement, the light emitting diode signal lamp or the light signal arrangement is the subject of claim 7.
  • a method according to which the circuit arrangement works is the subject of the claim 8.
  • a preferred further development of the process is the subject of claim 9.
  • the circuit arrangement according to the invention is parallel to the arrangement of light emitting diodes from at least one a switching element and a load resistor.
  • the Switching element that is, its current path, has in the on State a variable electrical resistance, the resistance value of which is regulated by a control signal becomes.
  • the switching element is for this purpose to an evaluation device coupled, the operating voltage of the LED arrangement detected.
  • the evaluation device controls on the basis of the detected input signal of the operating voltage Switching element depending on the detected operating voltage such that a load current over the load resistance flows.
  • the sum of the load current and the LED current results a current value assigned to the operating voltage on a through external elements, especially monitoring devices, given current-voltage characteristic.
  • the switching element is a Transistor whose current path is in series with the load resistor is switched and its control path to an operational amplifier is coupled.
  • the operational amplifier transmits during operation a control signal to the control connection, the type from the operating voltage signal at the corresponding input of the Operational amplifier depends. Controls with the control signal the operational amplifier the conductivity of the current path of the transistor depending on the level of the operating voltage.
  • the circuit arrangement a voltage divider circuit connected in parallel to the LED arrangement.
  • the center tap the circuit arrangement is on one non-inverting input of the operational amplifier and to an inverting input of the operational amplifier a reference voltage source is coupled.
  • Circuit arrangement advantageously allow an exchange conventional signal lamps by means of LED arrangements without too much technical effort and without the periphery to the signal lamp with regard to its electrical energy supply and adapt the monitoring measures to have to.
  • the circuit arrangement is particularly suitable for light signal arrangements, which at night to reduce the Luminous intensity of the signal with the lowest possible operating voltage (Night dining conditions) are operated and the on Day with the greatest possible operating voltage.
  • the Switching element is maximum for this at night dining conditions permeable and more resistive in day-to-day conditions.
  • the circuit arrangement, the light-emitting diode arrangement, is particularly preferred or the light signal arrangement in a railway light signal system used where a conventional Signal lamp to be replaced by an LED arrangement.
  • the light-emitting diode arrangement connected in parallel to the circuit arrangement a parallel connection is particularly preferred from a variety of individual LED components or from a variety of LED series connections from several LEDs.
  • the circuit arrangement enables a safe signal Adaptation of the electrical characteristic of an LED signal lamp to the characteristic of a conventional signal lamp.
  • "Technically signal safe” in this case means the arrangement even in the event of a fault (component failure, etc.) in advance definable limits responded.
  • the circuit arrangement consumes in the faultless state at the lowest operating voltage (for example under night dining conditions) the greatest current. With the greatest operating voltage (for example, in the case of daily dining conditions) is the Power consumption of the circuit arrangement reduced.
  • LED signal lamp equipped with this circuit arrangement (LED arrangement including circuit arrangement for Characteristic curve adaptation) is about in railway beacon systems a wide voltage range can be used, the electrical Characteristic values of this LED signal lamp in a faultless state almost identical to the electrical characteristics of a conventional one Signal lamp are. Leave in faulty condition advantageously specify limit conditions which apply to Proof of the signal-safe function are required.
  • the particular advantage of the circuit arrangement according to the invention is that the amount of total resistance of load resistance and switching element of the Amount of operating voltage depends and not just a single one has a fixed value.
  • the ratio of current through the LED arrangement to the current through the The parallel branch with the load resistance thus varies depending on the level of the operating voltage.
  • the parallel string from load resistance and switching element with low resistance and at high operating voltages like for example in daytime dining conditions are present, high impedance.
  • the circuit arrangement fulfills the basic functionality according to the invention, after which to adjust the current flow by an LED signal lamp to an external energy supply and monitoring devices predetermined characteristic by means of a switch connected in parallel to the LED arrangement adjustable load circuit on the level of the operating voltage for the LED arrangement dependent load current is generated. This additional load current, results in total with the LED current through the LED arrangement one of the at the LED arrangement assigned operating voltage Current value on the specified characteristic.
  • the circuit arrangement, light emitting diode signal lamp or Light signal arrangement according to the invention is quite suitable particularly preferred for use in a signaling system, in which the light emitting diode arrangement from a far from this arranged energy supply and control device, which is located in a control center, for example, is supplied. This is particularly the case in light signal systems of rail traffic, road traffic light systems and light signal systems for air traffic.
  • the circuit diagram of FIG. 4 shows a circuit arrangement which is connected in parallel to an LED arrangement according to FIG. 2 and which absorbs the differential current shown in FIG. 3 (dashed line) as a function of an operating voltage U B of the LED arrangement.
  • the circuit arrangement essentially has an operational amplifier OPV, a reference voltage source Uref, and a series circuit comprising a transistor T and a load resistor R L , which is connected in parallel to the LED arrangement.
  • a series circuit comprising a load resistor R L and the current path EC (emitter collector) of a transistor T is connected in parallel with the LED arrangement to the operating voltage (U B ) source.
  • the transistor T is, for example, a pnp bipolar transistor. In principle, however, any other type of transistor can also be used.
  • a voltage divider device Parallel to the LED arrangement is a voltage divider device, consisting of a series connection of a first electrical resistance R1 and a second electrical resistance R2, connected upstream of a fuse Si is.
  • the center tap M of the voltage divider circuit is R1, R2 to the non-inverting input "+" of an operational amplifier OPV laid.
  • Parallel to the voltage divider device R1, R2 is a series connection of a third electrical Resistor R3, a fourth electrical resistor R4 and a reference voltage (Uref) source switched.
  • the connecting line between the third R3 and the fourth electrical Resistor R4 is on inverting input "-" of the operational amplifier OPV.
  • the inverting input of the op amp is over a fifth electrical resistance R5 with the output of the operational amplifier OPV connected, which in turn with the control input B (Base) of the transistor T is connected.
  • the output of the operational amplifier OPV has negative potential and the transistor T is conductive.
  • the load resistor R L is connected in parallel with the LED arrangement and thus also with the operating voltage (U B ) source. This leads to an additional current flow parallel to the LED arrangement, as a result of which the rest of the signal system "sees" a small electrical resistance of the LED signal lamp, that is to say an LED arrangement including a circuit arrangement for matching characteristic curves connected in parallel therewith.
  • the operational amplifier OPV regulates its output against + as long as until the voltages at the inverting input "-" and at the non-inverting input "+” match again.
  • the output of the operational amplifier OPV thereby switches through depending on the operating voltage from "-" to "+".
  • the transistor T changes from the fully conductive to the blocked state, as a result of which the current flow through the fifth electrical resistor R5 is reduced to zero.
  • the reference voltage at the inverting input of the operational amplifier OPV is determined by the reference voltage source Uref and the voltage divider, consisting of the electrical resistors R 3 , R 4 and R 5 .
  • the increase in the output voltage of the operational amplifier OPV can be adjusted with the help of the third and fifth electrical resistance.
  • the operating voltage U B at which the current is reduced by the load resistor RL, is set with the voltage divider R1, R2.
  • the arrangement is preferably set in such a way that at the lowest operating voltage U B to be assumed (for example in the case of night food links in a railway light signal system) the transistor T is fully activated on the signal lamp, that is to say the current path EC is at most conductive and that with the largest operating voltage U B to be assumed (for Example in daytime feed conditions in a railway light signal system) the transistor T is fully blocked, that is to say the current path EC has maximum electrical resistance.
  • U B to be assumed for example in the case of night food links in a railway light signal system
  • the transistor T is fully activated on the signal lamp, that is to say the current path EC is at most conductive and that with the largest operating voltage U B to be assumed (for Example in daytime feed conditions in a railway light signal system) the transistor T is fully blocked, that is to say the current path EC has maximum electrical resistance.
  • the load resistor R L is designed as a safety design, which means that in the event of a fault, only a defined resistance reduction (for example 10%) has to be expected.
  • a defined resistance reduction for example 10%
  • an increase in electrical resistance can be assumed.
  • the fuse Si is inserted in such a way that an assumed short circuit of the operational amplifier OPV, the transistor T, the reference voltage source Uref and the five electrical resistors R1 to R5 limits the resulting fault current.
  • the current corresponding to the dash-dotted line 51 results when, for example, the collector-emitter path CE of the transistor T is short-circuited, but also when the output of the operational amplifier OPV is constantly at minus potential. Due to the fact that the electrical load resistance R L cannot decrease significantly in the event of a fault, the current through the load resistance R L cannot increase beyond the curve shown in dash-dotted line 51. Regardless of which component error is assumed in the circuit arrangement according to FIG. 4.
  • the dotted line 52 of the diagram in FIG. 5 represents the current profile which is limited by the fuse Si. This current value is preferably substantially smaller than the current according to the dash-dotted line 51. This is ensured by the selection of suitable components.
  • the response value of the fuse Si is 30 mA, a current of 500 mA flowing through the load resistor R L and a current of 300 mA flowing through the LED in the event of post-tensioning.
  • the solid line 53 of the diagram in FIG. 5 shows the maximum total current to be assumed for the circuit arrangement in accordance with FIG. 4 in the event of a fault and is the sum of the current through the load resistor R L (dash-dotted line 51) and the current through the fuse Si (dotted line 52).
  • FIG. 6 shows a good agreement of the Current consumption of an LED signal, consisting of an LED arrangement according to Figure 2 and one connected in parallel Circuit arrangement according to Figure 4, in the fault-free state with the current consumption of a conventional signal lamp.
  • NS Below of the night voltage value NS is the current consumption of the LED signal lamp slightly smaller than the current consumption of one conventional signal lamp. But it comes with small ones Operating voltages to a current flow, causing the LED signal lamp behaves with low resistance and is therefore insensitive against interference voltages.
  • the characteristic curve shown in the diagram in FIG. 6 in the event of a fault Circuit arrangement represents a maximum value which is not exceeded, no matter what error in the Circuit arrangement is adopted.
  • the behavior of the LED signal lamp is thus almost up to the night voltage value NS identical to the behavior of the conventional signal lamp.
  • Above of the night voltage value NS in the event of a fault Circuit arrangement come to an additional current flow, which is also capped.
  • circuit arrangement according to FIG. 4 represents only one possible variant of the circuit arrangement according to the invention.
  • any type of electronic switch can be used instead of the transistor T.
  • the use of mechanical switches, such as relays, is also conceivable, but depending on the respective operating voltage, electrical load resistors R L of different sizes must be switched (with a low operating voltage, a smaller load resistor, with a large operating voltage, a larger load resistor).
  • a circuit arrangement is preferably suitable for this according to the circuit diagram of Figure 7.
  • a rectifier bridge GR1 and a filter element for the generation of a internal DC voltage before the input of the evaluation device 4 switched.
  • the fuse Si is in front of the rectifier bridge GR1 arranged. Component defects on the Rectifier bridge (short circuit of a diode) through the fuse Si be caught with.
  • Parallel to the LED arrangement is a parallel arrangement 3 from a first series connection off, load resistor RL1, transistor T1 and diode D1 and one second series connection of load resistor RL2, transistor T2 and diode D2 connected. The pass directions of the two Series connections are directed in opposite directions.
  • the two control connections B1 and B2 of the two transistors T1 and T2 are connected to the output of the operational amplifier OPV connected, the input circuit of which described above Circuit arrangement according to Figure 4 corresponds.
  • the Rectifier bridge GR1 with the filter element is between the operating voltage connection and operational amplifier OPV switched and supplies the voltage divider R1, R2 with DC voltage.
  • the load resistors RL1 and RL2 and the transistors T1 and T2 are arranged in front of the fuse Si. For every half wave is a transistor T1 or T2 and a load resistor RL1 or RL2 used.
  • the diodes D1 and D2 prevent this kind of switches a current of the other half wave flows into the collector of the transistors T1 and T2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP02090012A 2001-01-19 2002-01-14 Circuit et procédé d'adaptation de la courbe caractéristique d'une diode LED Ceased EP1233654A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10102352A DE10102352C2 (de) 2001-01-19 2001-01-19 Schaltungsanordnung zur Kennlinienanpassung einer Leuchtdiodenanordnung, Leuchtdioden-Signallampe und Leuchtsignalanordnung sowie deren Verwendung
DE10102352 2001-01-19

Publications (1)

Publication Number Publication Date
EP1233654A1 true EP1233654A1 (fr) 2002-08-21

Family

ID=7671116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02090012A Ceased EP1233654A1 (fr) 2001-01-19 2002-01-14 Circuit et procédé d'adaptation de la courbe caractéristique d'une diode LED

Country Status (2)

Country Link
EP (1) EP1233654A1 (fr)
DE (1) DE10102352C2 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007023309A1 (fr) * 2005-08-25 2007-03-01 Traffic Engineering Systems Limited Circuit d'émulation
EP2124507A2 (fr) 2008-05-23 2009-11-25 Siemens Aktiengesellschaft Emetteur de signal pour un signal lumineux DEL
GB2495120A (en) * 2011-09-29 2013-04-03 Howells Group Plc Railway light signals
EP2687418B1 (fr) 2012-07-20 2015-09-09 Pintsch Bamag Antriebs- und Verkehrstechnik GmbH Signal de trajectoire à LED pour le transport ferroviaire et interface pour un tel signal de trajectoire à LED
EP3037713A1 (fr) * 2014-12-23 2016-06-29 DB Netz AG Dispositif d'eclairage pour une installation de signal lumineux du trafic ferroviaire
DE202016003785U1 (de) 2016-06-16 2016-07-20 Deutsche Bahn Ag Vorrichtung zum Ersetzen einer Glühlampe
FR3035236A1 (fr) * 2015-04-14 2016-10-21 Valeo Iluminacion Sa Dispositif et procede d'adaptation dynamique du courant de charge dans un circuit electronique
DE102016007366A1 (de) 2016-06-16 2017-12-21 Deutsche Bahn Ag Glühlampenemulation
EP3456604A1 (fr) * 2017-09-19 2019-03-20 Ansaldo STS S.p.A. Dispositif d'éclairage pour un signal ferroviaire ou similaire et son procédé de gestion

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10164561B4 (de) * 2001-12-14 2004-03-04 Siemens Ag Schaltungsanordnung zum Betreiben eines LED-Signals
DE10359196B4 (de) * 2003-12-17 2016-12-15 Hella Kgaa Hueck & Co. Beleuchtungseinrichtung für ein Kraftfahrzeug
DE102004027351B3 (de) * 2004-06-01 2006-01-19 Siemens Ag Schaltungsanordnung zum Betreiben einers LED-Signalgebers
DE102009045650B4 (de) * 2009-10-14 2022-04-21 Robert Bosch Gmbh Verfahren zur Regelung einer Anzeigevorrichtung
DE102013207675A1 (de) * 2013-04-26 2014-10-30 Tridonic Gmbh & Co Kg Konstantstrom-Konverter für Beleuchtungseinrichtungen
WO2015193137A1 (fr) 2014-06-17 2015-12-23 Koninklijke Philips N.V. Circuit de commande dynamique
CN111003022B (zh) * 2019-12-25 2021-11-30 中国铁道科学研究院集团有限公司通信信号研究所 一种基于磁栅测量的道岔动作全过程监测方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4758772A (en) * 1986-07-09 1988-07-19 Braun Aktiengesellschaft Discharge indicating means for a storage battery
FR2630869A1 (fr) * 1988-04-28 1989-11-03 Telemecanique Electrique Dispositif de transmission isolee d'un signal par optocoupleur
WO1995012512A1 (fr) * 1993-11-05 1995-05-11 Siemens Integra Verkehrstechnik Ag Circuit pour l'emission de signaux optiques
EP0992961A2 (fr) * 1998-10-07 2000-04-12 Siemens Aktiengesellschaft Circuit d'opération d'un panneau lumineux

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4758772A (en) * 1986-07-09 1988-07-19 Braun Aktiengesellschaft Discharge indicating means for a storage battery
FR2630869A1 (fr) * 1988-04-28 1989-11-03 Telemecanique Electrique Dispositif de transmission isolee d'un signal par optocoupleur
WO1995012512A1 (fr) * 1993-11-05 1995-05-11 Siemens Integra Verkehrstechnik Ag Circuit pour l'emission de signaux optiques
EP0992961A2 (fr) * 1998-10-07 2000-04-12 Siemens Aktiengesellschaft Circuit d'opération d'un panneau lumineux

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7795820B2 (en) 2005-08-25 2010-09-14 Lights And Signals Limited Emulation circuit
WO2007023309A1 (fr) * 2005-08-25 2007-03-01 Traffic Engineering Systems Limited Circuit d'émulation
EP2124507A2 (fr) 2008-05-23 2009-11-25 Siemens Aktiengesellschaft Emetteur de signal pour un signal lumineux DEL
DE102008025187A1 (de) 2008-05-23 2009-12-03 Siemens Aktiengesellschaft Signalgeber für ein LED-Lichtsignal
GB2495120A (en) * 2011-09-29 2013-04-03 Howells Group Plc Railway light signals
GB2495120B (en) * 2011-09-29 2015-11-18 Howells Group Plc Railway light signals
EP2687418B1 (fr) 2012-07-20 2015-09-09 Pintsch Bamag Antriebs- und Verkehrstechnik GmbH Signal de trajectoire à LED pour le transport ferroviaire et interface pour un tel signal de trajectoire à LED
EP3037713A1 (fr) * 2014-12-23 2016-06-29 DB Netz AG Dispositif d'eclairage pour une installation de signal lumineux du trafic ferroviaire
FR3035236A1 (fr) * 2015-04-14 2016-10-21 Valeo Iluminacion Sa Dispositif et procede d'adaptation dynamique du courant de charge dans un circuit electronique
DE202016003785U1 (de) 2016-06-16 2016-07-20 Deutsche Bahn Ag Vorrichtung zum Ersetzen einer Glühlampe
DE102016007366A1 (de) 2016-06-16 2017-12-21 Deutsche Bahn Ag Glühlampenemulation
DE102016007366B4 (de) * 2016-06-16 2021-05-06 Deutsche Bahn Aktiengesellschaft Glühlampenemulation
EP3456604A1 (fr) * 2017-09-19 2019-03-20 Ansaldo STS S.p.A. Dispositif d'éclairage pour un signal ferroviaire ou similaire et son procédé de gestion
WO2019058188A1 (fr) * 2017-09-19 2019-03-28 Ansaldo Sts Spa Dispositif lumineux pour signaux de chemin de fer et analogue, et son procédé de gestion
CN111587203A (zh) * 2017-09-19 2020-08-25 日立铁路信号装置股份有限公司 用于铁路信号灯等的发光设备及其管理方法
US11420660B2 (en) 2017-09-19 2022-08-23 Hitachi Rail Sts S.P.A. Luminous device for rail ways signals and the like, and management method thereof

Also Published As

Publication number Publication date
DE10102352C2 (de) 2003-02-20
DE10102352A1 (de) 2002-08-01

Similar Documents

Publication Publication Date Title
DE69816958T2 (de) Schaltungsanordnung mit dabei passender signalleuchte
EP1360088B1 (fr) Systeme d'eclairage pour vehicules automobiles
DE10102352C2 (de) Schaltungsanordnung zur Kennlinienanpassung einer Leuchtdiodenanordnung, Leuchtdioden-Signallampe und Leuchtsignalanordnung sowie deren Verwendung
DE60008854T2 (de) Led-matrix in gitterstruktur zur beleuchtung
EP1449408A1 (fr) Circuit pour matrice de del
DE102016214014A1 (de) Beleuchtungsschaltung und Fahrzeugleuchte, welche diese verwendet
DE102005041792A1 (de) Beleuchtungssteuerschaltung für Fahrzeugbeleuchtungsausrüstung
DE60017709T2 (de) Anordnung zur Fernüberwachung von Led Leuchten
DE102006058509A1 (de) Fahrzeugbeleuchtungseinrichtung
DE10103611B4 (de) Schaltungsanordnung zum Betreiben von mehreren Leuchtmitteln
DE102006018308B4 (de) Schaltungsanordnung für ein Fahrzeugbordnetz zum Simulieren von Blinkleuchten mit Glühlampen bei einer Verwendung von Blinkleuchten mit Leuchtdioden
DE10012860B4 (de) Steuersystem für einen Wechselstromgenerator
DE102014103524A1 (de) Schaltungsanordnung zum Betreiben zumindest eines Leuchtmittels
EP0992961B1 (fr) Circuit d'opération d'un panneau lumineux
DE602005004167T2 (de) Elektrische Schaltung für LED Signallampen mit einer Schaltschwelle zum Umschalten zwischen Tages- und Nachtbetrieb
DE102008037551B4 (de) Vorrichtung zum Betreiben von Leuchtdiodenketten
DE10359196B4 (de) Beleuchtungseinrichtung für ein Kraftfahrzeug
DE102004007278A1 (de) Beleuchtungsvorrichtung, insbesondere für den Innenraum von Fahrzeugen
DE102008004791A1 (de) Lasterkennungsschaltung für dimmbare LED
DE102013107088A1 (de) Schaltungsanordnung zum Schutz von mindestens einem Bauteil eines Zweidrahtstromkreises
EP1341402A2 (fr) Dispositif d' éclairage à module-LED
DE202020105977U1 (de) Phasendimmer
DE4330114A1 (de) Schaltungsanordnung zum Steuern einer Mehrzahl von Verbrauchern, insbesondere Vorschaltgerät von Lampen
WO2009153173A1 (fr) Dispositif de filtration
DE69307118T2 (de) Mit einer parallelschaltung versehene serienschaltung

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 CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20020905

17Q First examination report despatched

Effective date: 20021025

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20040709