WO2011101398A3 - Led voltage measurement - Google Patents

Led voltage measurement Download PDF

Info

Publication number
WO2011101398A3
WO2011101398A3 PCT/EP2011/052329 EP2011052329W WO2011101398A3 WO 2011101398 A3 WO2011101398 A3 WO 2011101398A3 EP 2011052329 W EP2011052329 W EP 2011052329W WO 2011101398 A3 WO2011101398 A3 WO 2011101398A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
emitting diode
diode path
voltage measurement
led voltage
Prior art date
Application number
PCT/EP2011/052329
Other languages
German (de)
French (fr)
Other versions
WO2011101398A2 (en
Inventor
Dominique Combet
Thomas Kuch
Original Assignee
Tridonic 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 Tridonic Ag filed Critical Tridonic Ag
Priority to DE112011100594.6T priority Critical patent/DE112011100594B4/en
Priority to EP11703901.6A priority patent/EP2540139B1/en
Publication of WO2011101398A2 publication Critical patent/WO2011101398A2/en
Publication of WO2011101398A3 publication Critical patent/WO2011101398A3/en

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]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/59—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits for reducing or suppressing flicker or glow effects

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

The invention relates to an operating circuit for at least one light-emitting diode path (L) with at least one light-emitting diode (LED), comprising a switched-node regulator circuit (SRS), to which a DC voltage is supplied and which provides a constant current for the at least one light-emitting diode path (L), wherein the primary side (P1) of a current mirror (S) is connected in parallel to the light-emitting diode path (L) and a measurement voltage (Umess) is tapped on the secondary side (P2) at a resistance (R2), which is proportional to the voltage drop at the light-emitting diode path (L).
PCT/EP2011/052329 2010-02-18 2011-02-17 Led voltage measurement WO2011101398A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112011100594.6T DE112011100594B4 (en) 2010-02-18 2011-02-17 LED voltage measurement
EP11703901.6A EP2540139B1 (en) 2010-02-18 2011-02-17 Led voltage measurement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010002081A DE102010002081A1 (en) 2010-02-18 2010-02-18 LED voltage measurement
DE102010002081.8 2010-02-18

Publications (2)

Publication Number Publication Date
WO2011101398A2 WO2011101398A2 (en) 2011-08-25
WO2011101398A3 true WO2011101398A3 (en) 2014-03-13

Family

ID=44044112

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/052329 WO2011101398A2 (en) 2010-02-18 2011-02-17 Led voltage measurement

Country Status (3)

Country Link
EP (1) EP2540139B1 (en)
DE (2) DE102010002081A1 (en)
WO (1) WO2011101398A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011116231B4 (en) * 2011-10-17 2017-12-21 Austriamicrosystems Ag Illumination arrangement and method for detecting a short circuit in diodes
DE102012220761A1 (en) * 2012-11-14 2014-05-15 Bag Engineering Gmbh Programmable, emergency light operating device for supplying LED module to operate module after detection of failure of alternating current network, has transistor including control input connected with output terminal of output stages
CN104838725A (en) * 2012-12-06 2015-08-12 赤多尼科两合股份有限公司 Operating device for illuminant
AT13688U1 (en) * 2012-12-06 2014-06-15 Tridonic Gmbh & Co Kg Operating device for bulbs
DE102020208944A1 (en) 2020-07-16 2022-01-20 Osram Gmbh METHOD AND CIRCUIT ARRANGEMENT FOR DETECTING A PARTIAL FAILURE OF A LAMP WITH AT LEAST ONE STRING OF SEMICONDUCTOR LIGHT SOURCES
DE102020008118A1 (en) 2020-12-08 2022-06-09 Elmos Semiconductor Se Procedure for the safety-related detection of the voltage drop across a light source in a vehicle
DE102020132666B3 (en) 2020-12-08 2022-03-10 Elmos Semiconductor Se Device and method for safety-related detection of the voltage drop across a light source in a vehicle
CN113193910B (en) * 2021-04-12 2022-10-18 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） Automatic measuring device for electro-optic modulation frequency characteristics of LED

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278717A (en) * 1993-05-31 1994-12-07 Fujitsu Ltd Driver circuit for light emitting elements
DE202007007776U1 (en) * 2007-06-01 2007-08-09 Conwys Ag Trailer connection unit for vehicle e.g. passenger car, train, has resistive unit connected with current mirror for determining current flowing through unit by collection of electrical parameters
WO2008007106A1 (en) * 2006-07-14 2008-01-17 Wolfson Microelectronics Plc Protection circuit and method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0792205A (en) * 1993-09-27 1995-04-07 Matsushita Electric Works Ltd Source voltage detector
JP3417891B2 (en) * 1999-10-27 2003-06-16 株式会社オートネットワーク技術研究所 Current detector
DE10140331C2 (en) * 2001-08-16 2003-11-06 Siemens Ag Traffic control light signals and method for monitoring the function of such a sign
DE102004027676B4 (en) * 2004-04-30 2006-06-14 Siemens Ag Method and device for testing at least one LED string
DE102006034371B4 (en) 2006-04-21 2019-01-31 Tridonic Ag Operating circuit and operating method for light-emitting diodes
AT504949B1 (en) * 2007-02-20 2008-11-15 Zizala Lichtsysteme Gmbh CIRCUIT ARRANGEMENT FOR DETECTING A SHORT-CIRCUIT OF LUMINOUS DIODES
DE202007007777U1 (en) * 2007-06-01 2007-08-16 Conwys Ag Circuit arrangement for interconnection with towing vehicle and trailer of vehicle train electrical connection, has input connector designed for load by lamp, and potentiometer provided between input connector and output connector
US8421375B2 (en) * 2007-06-25 2013-04-16 Ingersoll-Rand Company Amplification circuit and heat sink used with a light emitting apparatus having varying voltages
JP4994253B2 (en) * 2008-01-24 2012-08-08 株式会社ジャパンディスプレイイースト Liquid crystal display

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278717A (en) * 1993-05-31 1994-12-07 Fujitsu Ltd Driver circuit for light emitting elements
WO2008007106A1 (en) * 2006-07-14 2008-01-17 Wolfson Microelectronics Plc Protection circuit and method
DE202007007776U1 (en) * 2007-06-01 2007-08-09 Conwys Ag Trailer connection unit for vehicle e.g. passenger car, train, has resistive unit connected with current mirror for determining current flowing through unit by collection of electrical parameters

Also Published As

Publication number Publication date
DE102010002081A1 (en) 2011-08-18
EP2540139B1 (en) 2016-10-05
EP2540139A2 (en) 2013-01-02
DE112011100594A5 (en) 2013-01-24
DE112011100594B4 (en) 2015-09-03
WO2011101398A2 (en) 2011-08-25

Similar Documents

Publication Publication Date Title
WO2011101398A3 (en) Led voltage measurement
WO2012053825A3 (en) Light emitting diode driving device
WO2014030062A3 (en) Emergency lighting device
MX346857B (en) Led-based illumination module on -board diagnostics.
WO2012052875A3 (en) Led retrofit lamp
WO2013136301A3 (en) Circuit arrangement
EP2360994A3 (en) Current regulator drive circuit shunting current through voltage-dividing load
WO2012101519A3 (en) Led luminescence apparatus
EP2392931A3 (en) Dynamic compensation of aging drift in current sense resistor
WO2014015021A3 (en) High ambient temperature led luminaire with thermal compensation circuitry
GB2549012A (en) Light emitting diode (LED)driver having direct replacement capabilities
GB201300495D0 (en) Circuits and methods of driving light sources
PH12015501160A1 (en) Led driver circuit using flyback converter to reduce observable optical flicker by reducing rectified ac mains ripple
WO2011098235A3 (en) Module bypass circuit for a photovoltaic module
EP2709252A3 (en) LED lighting device
WO2008109276A3 (en) Hybrid electrical power source
CY1116353T1 (en) CURRENT REGULATOR
WO2013090700A3 (en) Transformer voltage detection in dimmable lighting systems
RO201200043U3 (en) Device with light-emitting diodes
NZ586130A (en) An led driver method for traffic lanterns
IN2014CN01065A (en)
WO2014090931A3 (en) Arrangement for operating light sources
WO2013110649A3 (en) Combined control of two voltage sources
WO2014094014A3 (en) Primary side controlled constant current converter for lighting means
WO2011134980A3 (en) Circuit arrangement for operating leds

Legal Events

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

Ref document number: 11703901

Country of ref document: EP

Kind code of ref document: A2

REEP Request for entry into the european phase

Ref document number: 2011703901

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2011703901

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 112011100594

Country of ref document: DE

Ref document number: 1120111005946

Country of ref document: DE

REG Reference to national code

Ref country code: DE

Ref legal event code: R225

Ref document number: 112011100594

Country of ref document: DE

Effective date: 20130124