DK177267B1 - Power saving driver for light emitting diodes - Google Patents

Power saving driver for light emitting diodes Download PDF

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Publication number
DK177267B1
DK177267B1 DKPA201100564A DKPA201100564A DK177267B1 DK 177267 B1 DK177267 B1 DK 177267B1 DK PA201100564 A DKPA201100564 A DK PA201100564A DK PA201100564 A DKPA201100564 A DK PA201100564A DK 177267 B1 DK177267 B1 DK 177267B1
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Denmark
Prior art keywords
leds
light source
parallel
diodes
diode
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DKPA201100564A
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Danish (da)
Inventor
Nicholas Moeller
Milan Mancic
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Nicholas Moeller
Milan Mancic
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Priority to DKPA201100564A priority Critical patent/DK177267B1/en
Application filed by Nicholas Moeller, Milan Mancic filed Critical Nicholas Moeller
Priority to EP12719250.8A priority patent/EP2697898A2/en
Priority to PCT/DK2012/000038 priority patent/WO2012139576A2/en
Priority to KR1020137030306A priority patent/KR20140030189A/en
Priority to US14/110,842 priority patent/US9673723B2/en
Priority to CN201280018601.4A priority patent/CN103650308A/en
Priority to CA2832904A priority patent/CA2832904A1/en
Priority to RU2013150831/07A priority patent/RU2584822C2/en
Priority to BR112013026405A priority patent/BR112013026405A2/en
Priority to JP2014504162A priority patent/JP2014511104A/en
Application granted granted Critical
Publication of DK177267B1 publication Critical patent/DK177267B1/en

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

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

Abstract

En lyskilde bestående af en eller flere lysdioder LED 1,LED2 er anordnet i en asymmetrisk strømgenerator, således at en seriekobling af lysdioderne er koblet i serie med en diode, der også kan være en lysdiode, hvor den nævnte diode er koblet således, at en impedans er koblet i parallel med seriekoblingen af dioden og en af lysdioderne LED1, og en anden impedans er koblet i parallel med dioden og den anden lysdiode LED2. Lyskilden kan bestå af hundrede eller tusinder af LED s afhængig af en given anvendelse. Impedansen kan være en kondensator eller en spole. Lyskilden modtager effekt fra en DC kilde, som gennem omskiftere, er styret asynkront af en ekstern oscillator. P denne måde er det muligt at udlede mere lys fra lysdioderne sammenlignet med tilfældet hvor de er koblet direkte til en almindelig spænd ingskilde.A light source consisting of one or more LEDs LED 1, LED2 is arranged in an asymmetric current generator, so that a series connection of the LEDs is connected in series with a diode, which can also be an LED, said diode being coupled so that a impedance is connected in parallel with the series connection of the diode and one of the LEDs LED1, and another impedance is connected in parallel with the diode and the second LED LED2. The light source can consist of hundreds or thousands of LEDs depending on a given application. The impedance can be a capacitor or a coil. The light source receives power from a DC source, which through switches is controlled asynchronously by an external oscillator. In this way, it is possible to emit more light from the LEDs compared to the case where they are connected directly to a common voltage source.

Description

DK 177267 B1DK 177267 B1

Opfindelsen angår en lyskilde bestående af en eller flere lysdioder (LED's) hvor dioderne forsynes med strøm fra en DC kilde.The invention relates to a light source consisting of one or more LEDs, where the diodes are supplied with power from a DC source.

Lysdioder er velkendte til brug som lyskilder, bl. a. på grund af deres lave 5 effektforbrug.LEDs are well known for use as light sources, among others. a. because of their low 5 power consumption.

Gennem det sidste årti er sådanne lysdioder ofte anvendt i forbindelse med køretøjsbelysning.Over the past decade, such LEDs have often been used in vehicle lighting.

Sådan en lyskilde er f. eks. kendt fra US patentansøgning nr. 2011/0062892.Such a light source is known, for example, from US Patent Application No. 2011/0062892.

ίο US2004/0189555 beskriver en LED lyskilde, hvor lyskilden fødes af en AC kilde, der er forbundet til et multiplikationskredsløb og en spændingsregulator.ίο US2004 / 0189555 describes an LED light source where the light source is fed by an AC source connected to a multiplication circuit and a voltage regulator.

Selv da sådanne lysdioder (LED's) bruger mindre energi en traditionelle glødepærer er det i det moderne samfund et krav at mindske energiforbruget, uafhængigt af hvor lavt det aktuelle forbrug er.Even as such LEDs use less energy than traditional incandescent bulbs, it is a requirement in modern society to reduce energy consumption, regardless of how low the current consumption is.

1515

Dansk patentansøgning nr. PA 2011 00299 beskriver et kredsløb, der gør det muligt ud fra en given spænding at generere en højere spænding, hvor kredsløbet er opbygget af diskrete komponenter.Danish Patent Application No. PA 2011 00299 describes a circuit which enables a higher voltage to be generated from a given voltage, where the circuit is made up of discrete components.

En fortrukket udførelsesform for sådant et kredsløb er i forbindelse med 20 genopladelige batterier.A preferred embodiment of such a circuit is in connection with 20 rechargeable batteries.

Nu er det indset, at disse principper fordelagtigt kan anvendes i forbindelse med lyskilder af LED typen.It has now been realized that these principles can be advantageously applied to LED light sources.

Det på denne baggrund et formål med opfindelsen at tilvejebringe en driver til 25 lysdioder, der tilvejebringer et lavere effektforbrug af LED'en samtidig med at den genererer tilstrækkelig lysintensitet.Accordingly, it is an object of the invention to provide a driver for 25 LEDs which provides a lower power consumption of the LED while generating sufficient light intensity.

Formålet er tilgodeset med en lyskilde af den i krav l's indledning angivne art, der er karakteristisk ved, at den består af en seriekobling af mindst to 30 lysdioder og en ekstra diode, hvor dioderne er koblet til to impedanser, og hvor den ene impedans er forbundet parallelt med to af dioderne, og den anden impedans er forbundet parallelt med to af de andre dioder.The object is met by a light source of the kind specified in the preamble of claim 1, characterized in that it consists of a series connection of at least two LEDs and an additional diode where the diodes are connected to two impedances and one impedance is connected in parallel with two of the diodes, and the second impedance connected in parallel with two of the other diodes.

På denne måde vil styrken af lyset blive mere intensiv, i forhold til, hvis lyskilden var koblet direkte til spændingskilden.In this way, the intensity of the light will be more intense, compared to if the light source was coupled directly to the voltage source.

35 2 DK 177267 B135 2 DK 177267 B1

En foretrukket udførelsesform ifølge opfindelsen er som angivet i krav 2, at den ekstra diode er en lysdiode (LED).A preferred embodiment of the invention is as stated in claim 2, that the auxiliary diode is a light-emitting diode (LED).

En simpel og brugbar udførelsesform ifølge opfindelsen er som angivet i krav 5 3, at impedanserne er kondensatorer.A simple and workable embodiment of the invention is as stated in claim 5, that the impedances are capacitors.

Til yderligere at forbedre lysintensiteten, er det fordelagtigt, som angivet i krav 4, at impedanserne er spoler.To further improve the light intensity, it is advantageous, as stated in claim 4, that the impedances are coils.

En fordelagtig udførelsesform til særlige anvendelser er ifølge opfindelsen som ίο angivet i krav 5, at to af dioderne er koblet parallelt med en af kondensatorerne, medens den sidste diode er koblet parallelt med en af spolerne, og at en af dioderne er koblet parallelt med en af spolerne, medens de to andre dioder er koblet parallelt med an af kondensatorerne.An advantageous embodiment for particular applications is according to the invention as claimed in claim 5, that two of the diodes are connected in parallel with one of the capacitors, while the last diode is connected in parallel with one of the coils and that one of the diodes is connected in parallel with one of the coils. of the coils, while the other two diodes are connected in parallel with an of the capacitors.

15 En praktisk udførelsesform ifølge opfindelsen er som angivet i krav 6, at den består af otte lysdioder og to omskiftere, hvoraf en af omskifterne er koblet i serie med en belastning, og at der mellem omskifterne parallelt er koblet to seriekoblinger hver beståede af fire parallelt koblet lysdioder i serie med en kondensator, og at de to sæt af lysdioder er koblet i serie med en diode.A practical embodiment according to the invention is as claimed in claim 6, consisting of eight LEDs and two switches, one of the switches being connected in series with a load, and two series switches each consisting of four in parallel connected in parallel. connected LEDs in series with a capacitor, and that the two sets of LEDs are connected in series with a diode.

2020

Opfindelsen vil herefter blive nærmere forklaret i forbindelse med tegningerne, på hvilken fig. 1 viser en almindelig lyskilde med lysdioder 25 fig. 2 viser en asymmetrisk strømgenerator fig. 3 viser en lyskilde ifølge opfindelsen 30 fig. 4 viser en anden foretrukket udførelsesform af lyskilden ifølge opfindelsen fig. 5 viser en yderligere udførelsesform ifølge opfindelsen, medens 3 DK 177267 B1 fig. 6 viser en lyskilde som den på fig. 3, men med otte LED's.The invention will now be explained in more detail with reference to the drawings, in which: FIG. 1 shows a conventional light source with LEDs 25; FIG. 2 shows an asymmetric current generator FIG. 3 shows a light source according to the invention 30 fig. 4 shows another preferred embodiment of the light source according to the invention. FIG. 5 shows a further embodiment according to the invention, while FIG. 6 shows a light source such as that of FIG. 3, but with eight LEDs.

På fig. 1 ses en almindelig lyskilde i hvilken en parallel kobling af fire seriekoblede lysdioder er forbundet til en DC spænding.In FIG. 1 shows a conventional light source in which a parallel coupling of four series connected LEDs is connected to a DC voltage.

5 Når DC spændingen er tilsluttet, så vil dioderne udsende lys, som det er velkendt.5 When the DC voltage is connected, the diodes will emit light as is well known.

Fig. 2 viser en asymmetrisk strømgenerator af typen, som er beskrevet i dansk patent ansøgning nr. 2011 00299.FIG. 2 shows an asymmetric current generator of the type described in Danish Patent Application No. 2011 00299.

1010

Som det ses er tre dioder Dl, D2, D3 forbundet i serie og tilsluttet til en DC indgang. Parallelt med dioderne Dl og D2 er der forbundet en kondensator Cl, medens en kondensator C2 er forbundet parallelt med dioderne D2, D3. Kredsløbet fungerer som forklaret nedenfor: 15 Når en DC spænding, der har en tiltagende og en aftagende del, påtrykkes til seriekoblingen af dioderne, så vil strøm i den tiltagende del løbe gennem kondensatoren Cl, dioden D2 og kondensatoren C2, da dioderne Dl, D3 i denne periode er lukket for strøm.As can be seen, three diodes D1, D2, D3 are connected in series and connected to a DC input. Parallel to the diodes D1 and D2 is a capacitor C1, while a capacitor C2 is connected in parallel with diodes D2, D3. The circuit works as explained below: 15 When a DC voltage having an increasing and decreasing portion is applied to the series connection of the diodes, current in the increasing portion will run through capacitor C1, diode D2 and capacitor C2, since diodes D1, D3 during this period is closed to power.

Kondensatorerne vil have en værdi, der er den halve af værdien af DC 20 spændingen.The capacitors will have a value that is half the value of the DC 20 voltage.

Når DC spændingen har nået sin maksimum værdi og begynder at aftage så vil kondensatorerne Cl, C2 og dioden Dl tillade strøm at løbe, medens dioderne D2, D3 vil forhindre dioderne i at lede strøm.When the DC voltage has reached its maximum value and begins to decrease, the capacitors C1, C2 and diode D1 will allow current to run, while diodes D2, D3 will prevent the diodes from conducting current.

Alt dette vil resultere i at spændingen over seriekoblingen af dioderne vil have 25 to komponenter, nemlig DC spændingen og en højere spænding bestående af den halve DC spænding plus DC spændingen.All of this will result in the voltage across the series coupling of the diodes having 25 two components, namely the DC voltage and a higher voltage consisting of half the DC voltage plus the DC voltage.

Nu til fig. 3, hvor det kan ses, at den adskiller sig fra fig. 2 ved, at to af dioderne Dl, D3 er erstattet med lysdioder LEDI, LED2.Now for FIG. 3, where it can be seen that it differs from FIG. 2, two of the diodes D1, D3 are replaced by LEDs LED1, LED2.

30 En anden forskel er at to omskiftere SI, S2 er forbundet i serie med DC indgangen og en belastning, som kan have værdien 0.Another difference is that two switches SI, S2 are connected in series with the DC input and a load which can have the value 0.

Disse omskiftere er asynkrone omskiftere der kan blive styret af en ekstern oscillator (ikke vist) ved en frekvens på f. eks. 5 Mhz.These switches are asynchronous switches which can be controlled by an external oscillator (not shown) at a frequency of eg 5 Mhz.

4 DK 177267 B14 DK 177267 B1

Seriekoblingen af lysdioderne LEDI, LED2 er forbundet mellem omskifterne SI, S2.The series connection of the LEDs LEDI, LED2 is connected between the switches SI, S2.

Kredsløbet fungere på følgende måde: Når omskifteren SI er åben og S2 er lukket under den tiltagende del af DC 5 spændingen, så vil strømmen løbe gennem kondensatoren Cl, dioden Dl og kondensatoren C2 der fører til en værdi af DC spændingen plus den halve DC spænding.The circuit operates as follows: When switch S1 is open and S2 is closed during the increasing portion of DC 5 voltage, current will flow through capacitor C1, diode D1 and capacitor C2 leading to a value of DC voltage plus half DC voltage .

Under den efterfølgende aftagende del af DC spændingen, hvor omskifteren SI er lukket og omskifteren S2 er åben, så vil kondensatoren C2 blive afladet ίο gennem LED2 og belastningen.During the subsequent decreasing part of the DC voltage, where the switch S1 is closed and the switch S2 is open, then the capacitor C2 will be discharged or through LED2 and the load.

På denne måde bliver der trukket mere effekt fra DC spændingen, der fører til forøget lysintensitet sammenlignet med den situation, hvor de tre seriekoblede dioder var forbundet direkte til DC spændingen.In this way, more power is drawn from the DC voltage leading to increased light intensity compared to the situation where the three series connected diodes were connected directly to the DC voltage.

Det bemærkes, at det også er muligt at erstatte dioden Dl med en LED diode, 15 men denne diode vil udsende mindre lys end lysdioderne LEDI og LED2.It is noted that it is also possible to replace the diode D1 with an LED diode, 15 but this diode will emit less light than the LEDs LEDI and LED2.

Til at udlede mere lys fra LED dioderne LEDI, LED2 henledes opmærksomheden på fig. 4To emit more light from the LED diodes LEDI, LED2 draw attention to fig. 4

Forskelen fra fig. 3 udførelsesformen er at to spoler LI, L2 respektivt er 20 forbundet i parallel med lysdioden LED2 og lysdioden LEDI.The difference from FIG. In the embodiment, two coils L1, L2 and 20 are respectively connected in parallel with the LED LED2 and the LED LEDI.

Når omskifteren SI er åben og omskifteren S2 er lukket, vil strøm i den tiltagende del af DC spændingen løbe hurtigere gennem kondensatoren Cl, dioden Dl og kondensatoren C2, end gennem spolen LI, kondensatoren Cl og spolen L2 og kondensatoren C2, på grund af at induktiviteten af spolerne 25 forsinker strømmen.When switch S1 is open and switch S2 is closed, current in the increasing portion of the DC voltage will flow faster through capacitor C1, diode D1 and capacitor C2 than through coil L1, capacitor C1 and coil L2, and capacitor C2. the inductance of the coils 25 delays the current.

Dette betyder at kondensatorerne Cl og C2 vil modtage den første mængde af ladning i serie indtil den forsinkede strøm gennem spolerne når en maksimum ladning, når den tiltagende del af spændingen er afsluttet.This means that capacitors C1 and C2 will receive the first amount of charge in series until the delayed current through the coils reaches a maximum charge when the increasing part of the voltage is completed.

I den aftagende del af DC spændingen vil kondensatorerne modtage ladning 30 fra spolerne der fører til en større lys emission fra lys dioderne LEDI, LED2, sammenlignet med fig. 3 versionen.In the decreasing portion of the DC voltage, the capacitors will receive charge 30 from the coils leading to a greater light emission from the LEDs LEDI, LED2, compared to FIG. 3 version.

DK 177267 B1 5DK 177267 B1 5

Det bemærkes at det er bedst, hvis DC spændingen har lav induktivitet fordi at spolerne LI, L2 ikke vil være i stand til at producere samme effekt hvis DC spændingen havde samme induktivitet.It is noted that it is best if the DC voltage has low inductance because the coils L1, L2 will not be able to produce the same power if the DC voltage had the same inductance.

5 Fig. 5 udførelsesformen adskiller sig fra fig. 3 udførelsesformen ved at kondensatorerne Cl, C2, er erstattet af spolerne L1,L2.FIG. 5 the embodiment differs from FIG. 3, the capacitors C1, C2 are replaced by coils L1, L2.

I denne udførelse er en omskifter SI forbundet i serie med dioderne LEDI, Dl, og LED2.In this embodiment, a switch S1 is connected in series with the diodes LED1, D1, and LED2.

Når SI er åben gennem den tiltagende del af DC spændingen vil strøm løbe ίο gennem spolen LI dioden Dl og spolen L2, der fører til energitilførsel til spolerne.When SI is open through the increasing portion of the DC voltage, current will flow through the coil L1 diode D1 and coil L2 leading to energy supply to the coils.

Når omskifteren er lukket, vil spolerne frigøre opladet energi til dioderne LEDI, LED2.When the switch is closed, the coils will release charged energy to the LEDI, LED2 diodes.

15 På fig. 6 er der vist en lyskilde bestående af otte lysdioder, hvor fire af dem er parallelforbundne og i serie med kondensatoren Cl og de resterende lysdioder er forbundet i serie med kondensatoren C2.15 In FIG. 6, there is shown a light source consisting of eight LEDs, four of which are connected in parallel and in series with the capacitor C1 and the remaining LEDs are connected in series with the capacitor C2.

Funktionen af denne lyskilde er sammenlignelig med den på fig. 3 viste udførelsesform.The function of this light source is comparable to that of FIG. 3.

20 25 3020 25 30

Claims (8)

6 DK 177267 B16 DK 177267 B1 1. Lyskilde bestående af en eller flere lysdioder (LED's) hvor dioderne forsynes med strøm fra en DC kilde, kendetegnet ved, at den består 5 af en seriekobling af mindst to lysdioder (LEDI, LED2) og en ekstra diode (Dl), hvor dioderne er koblet til to impedanser (Cl, C2, LI, L2) og hvor den ene impedans (Cl,LI) er forbundet parallelt med to af dioderne, og den anden impedans (C2, L2) er forbundet parallelt med to af de andre dioder. 10A light source consisting of one or more LEDs, the diodes being supplied with power from a DC source, characterized in that it consists of a series connection of at least two LEDs (LEDI, LED2) and an additional diode (D1), wherein the diodes are coupled to two impedances (C1, C2, L1, L2) and where one impedance (C1, L1) is connected in parallel to two of the diodes and the other impedance (C2, L2) is connected in parallel to two of the other diodes. 10 2. Lyskilde ifølge krav 1, kendetegnet ved, at den ekstra diode (Dl) er en lysdiode.Light source according to claim 1, characterized in that the auxiliary diode (D1) is an LED. 3. Lyskilde ifølge krav 1 eller 2, kendetegnet ved, at impedanserne er 15 kondensatorer (Cl, C2).Light source according to claim 1 or 2, characterized in that the impedances are 15 capacitors (C1, C2). 4. Lyskilde ifølge krav 1 eller 2, kendetegnet ved, at impedanserne er spoler (LI, L2).Light source according to claim 1 or 2, characterized in that the impedances are coils (L1, L2). 5. Lyskilde ifølge krav 4, kendetegnet ved, at to af dioderne (LEDI, Dl) er koblet parallelt med en af kondensatorerne (Cl) medens den sidste diode (LED2) er koblet parallelt med en af spolerne (LI) og at en af dioderne (LEDI) er koblet parallelt med en af spolerne (L2), medens de to andre dioder (LEDI, LED2) er koblet parallelt med an af 25 kondensatorerne (C2).Light source according to claim 4, characterized in that two of the diodes (LEDI, D1) are connected in parallel to one of the capacitors (C1) while the last diode (LED2) is connected in parallel to one of the coils (L1) and one of the the diodes (LEDI) are connected in parallel with one of the coils (L2), while the other two diodes (LEDI, LED2) are connected in parallel with one of the capacitors (C2). 6. Lyskilde ifølge krav 1 - 4, kendetegnet ved, at den består af otte lysdioder og to omskiftere (SI, S2), hvoraf en af omskifterne (S2) er koblet i serie med en belastning, og at der mellem omskifterne parallelt 30 er koblet to seriekoblinger hver beståede af fire parallelt koblet lysdioder i serie med en kondensator (Cl, C2), og at de to seriekoblinger er koblet i serie med en diode (Dl). DK 177267 B1Light source according to claims 1-4, characterized in that it consists of eight LEDs and two switches (SI, S2), one of which the switches (S2) are connected in series with a load and that between the switches in parallel 30 two series circuits each consisted of four parallel connected LEDs in series with a capacitor (C1, C2) and the two series circuits are connected in series with a diode (D1). DK 177267 B1 24. LED LYSKILDE STI ©ΐ@ DC Indgang q I ¥ψ Fig. 1 π A D1 DC Indgang □ ci q;~ i '~Τ=^'Τ“ Ϊ D3 Fig. 2 DK 177267 B1 -->——m- - S1 S2 II Γϊγ DC Indgang B □ ci —i i I T C2 [ ® r LED2 -- Fig. 3 -1-1 —- S1 S2 II- i Πϊγ i“ π DC Indgang B [j] C1 Ψ--\ A _ C2 n j ^^ED2 -- Fig. 4 __ DK 177267 B1 -— - S1 II J DC Indgang □ L18 D*i:—I LED 2 -- Fig. 5 S1 S2 -- — ' - 3W LED x 4 Civ) (i) (i) (i) DC Indgang B □ C1 +i--1.-1-1 i Ψ 3W LED x 4 Fig. 624. LED LIGHT SOURCE Path © ΐ @ DC Input q I ¥ ψ Fig. 1 π A D1 DC Input □ ci q; ~ i '~ Τ = ^' Τ “Ϊ D3 Fig. 2 DK 177267 B1 -> —— m- - S1 S2 II Γϊγ DC Input B □ ci —i i I T C2 [® r LED2 - Fig. 3 -1-1 —- S1 S2 II- i Πϊγ i “π DC Input B [j] C1 Ψ - \ A _ C2 n j ^^ ED2 - FIG. 4 __ DK 177267 B1 -— - S1 II J DC Input □ L18 D * i: —I LED 2 - Fig. 5 S1 S2 - - '- 3W LED x 4 Civ) (i) (i) (i) DC Input B □ C1 + i - 1.-1-1 i Ψ 3W LED x 4 Fig. 6
DKPA201100564A 2011-04-15 2011-07-22 Power saving driver for light emitting diodes DK177267B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DKPA201100564A DK177267B1 (en) 2011-07-22 2011-07-22 Power saving driver for light emitting diodes
PCT/DK2012/000038 WO2012139576A2 (en) 2011-04-15 2012-04-13 Circuit adapted to supply a voltage to an electronic device and uses thereof
KR1020137030306A KR20140030189A (en) 2011-04-15 2012-04-13 Circuits adapted to supply a voltage to an electronic device and uses thereof
US14/110,842 US9673723B2 (en) 2011-04-15 2012-04-13 Circuit adapted to supply a voltage to an electronic device and uses thereof
EP12719250.8A EP2697898A2 (en) 2011-04-15 2012-04-13 Circuit adapted to supply a voltage to an electronic device and uses thereof
CN201280018601.4A CN103650308A (en) 2011-04-15 2012-04-13 Circuit adapted to supply a voltage to an electronic device and uses thereof
CA2832904A CA2832904A1 (en) 2011-04-15 2012-04-13 Circuit adapted to supply a voltage to an electronic device and uses thereof
RU2013150831/07A RU2584822C2 (en) 2011-04-15 2012-04-13 Circuit adapted to supply voltage to electronic device and use thereof
BR112013026405A BR112013026405A2 (en) 2011-04-15 2012-04-13 circuit adapted to provide voltage to and use of an electronic device
JP2014504162A JP2014511104A (en) 2011-04-15 2012-04-13 Circuits adapted to supply voltage to electronic devices and uses thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201100564A DK177267B1 (en) 2011-07-22 2011-07-22 Power saving driver for light emitting diodes
DK201100564 2011-07-22

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DKPA201100564A DK177267B1 (en) 2011-04-15 2011-07-22 Power saving driver for light emitting diodes

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