MA48993B1 - Electronic circuit for driving a chain of light-emitting diodes - Google Patents

Electronic circuit for driving a chain of light-emitting diodes

Info

Publication number
MA48993B1
MA48993B1 MA48993A MA48993A MA48993B1 MA 48993 B1 MA48993 B1 MA 48993B1 MA 48993 A MA48993 A MA 48993A MA 48993 A MA48993 A MA 48993A MA 48993 B1 MA48993 B1 MA 48993B1
Authority
MA
Morocco
Prior art keywords
emitting diodes
light
electronic
chain
voltage
Prior art date
Application number
MA48993A
Other languages
French (fr)
Other versions
MA48993A (en
Inventor
Sandro Toffoletto
Original Assignee
Cynergi S R L
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 Cynergi S R L filed Critical Cynergi S R L
Publication of MA48993A publication Critical patent/MA48993A/en
Publication of MA48993B1 publication Critical patent/MA48993B1/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]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
    • 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

Landscapes

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

Abstract

L'invention concerne un circuit électronique (1) pour piloter une chaîne de diodes électroluminescentes (5). Le circuit comprend un régulateur de courant (4) comprenant une borne d'entrée configurée pour recevoir une tension alternative redressée (vrtf) et comprenant une pluralité de bornes d'entrée (it1, it2, it3, it4) connectées à des tensions respectives différentes sélectionnées parmi la chaîne de diodes électroluminescentes, le régulateur de courant étant configuré pour réguler la valeur du courant circulant à travers la chaîne de diodes électroluminescentes. Le circuit d'attaque électronique comprend en outre un commutateur électronique (6) configuré pour commuter entre une position fermée et une position ouverte, en fonction de la valeur d'un signal de commande (vg). Le circuit d'attaque électronique comprend en outre un étage de polarisation (8) comprenant une borne d'entrée configurée pour recevoir une tension sélectionnée à partir d'une tension interne à la chaîne de diodes électroluminescentes et comprenant une borne de sortie configurée pour générer, en fonction de la tension sélectionnée, ledit signal de commande commandant le commutateur électronique. Le circuit d'attaque électronique comprend enfin un condensateur (7) intercalé entre le commutateur électronique et la chaîne de diodes électroluminescentes.The invention relates to an electronic circuit (1) for driving a chain of light-emitting diodes (5). The circuit comprises a current regulator (4) comprising an input terminal configured to receive a rectified alternating voltage (vrtf) and comprising a plurality of input terminals (it1, it2, it3, it4) connected to respective different voltages selected from the string of light emitting diodes, the current regulator being configured to regulate the amount of current flowing through the string of light emitting diodes. The electronic driver circuit further comprises an electronic switch (6) configured to switch between a closed position and an open position, depending on the value of a control signal (vg). The electronic driver circuit further comprises a bias stage (8) comprising an input terminal configured to receive a voltage selected from a voltage internal to the string of light emitting diodes and comprising an output terminal configured to generate , as a function of the selected voltage, said control signal controlling the electronic switch. The electronic driver circuit finally comprises a capacitor (7) interposed between the electronic switch and the chain of light-emitting diodes.

MA48993A 2017-03-24 2018-03-23 Electronic circuit for driving a chain of light-emitting diodes MA48993B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000032546A IT201700032546A1 (en) 2017-03-24 2017-03-24 Electronic circuit for driving a string of light-emitting diodes
PCT/IB2018/051963 WO2018172980A1 (en) 2017-03-24 2018-03-23 Electronic circuit for driving a string of light-emitting diodes

Publications (2)

Publication Number Publication Date
MA48993A MA48993A (en) 2020-02-05
MA48993B1 true MA48993B1 (en) 2022-10-31

Family

ID=59811717

Family Applications (1)

Application Number Title Priority Date Filing Date
MA48993A MA48993B1 (en) 2017-03-24 2018-03-23 Electronic circuit for driving a chain of light-emitting diodes

Country Status (7)

Country Link
EP (1) EP3603344B1 (en)
BR (1) BR112019019975A2 (en)
ES (1) ES2928692T3 (en)
IT (1) IT201700032546A1 (en)
LT (1) LT3603344T (en)
MA (1) MA48993B1 (en)
WO (1) WO2018172980A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900017960A1 (en) 2019-10-04 2021-04-04 Cynergi S R L LED lamp for lighting with radio control
EP4072248B1 (en) * 2021-04-08 2024-08-07 Controlled Oy Flicker reduction circuit
WO2023050290A1 (en) * 2021-09-30 2023-04-06 深圳市汇顶科技股份有限公司 Sine wave pulse signal generating circuit and related electronic apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011003931A1 (en) * 2011-02-10 2012-08-16 Osram Ag Control of several series-connected bulbs
US8823271B2 (en) * 2011-12-27 2014-09-02 Cree, Inc. Solid-state lighting apparatus including an energy storage module for applying power to a light source element during low power intervals and methods of operating the same
KR101552824B1 (en) * 2013-02-28 2015-09-14 주식회사 실리콘웍스 Circuit to control led lighting apparatus

Also Published As

Publication number Publication date
EP3603344B1 (en) 2022-07-20
ES2928692T3 (en) 2022-11-22
LT3603344T (en) 2023-01-25
MA48993A (en) 2020-02-05
WO2018172980A1 (en) 2018-09-27
EP3603344A1 (en) 2020-02-05
BR112019019975A2 (en) 2020-04-28
IT201700032546A1 (en) 2018-09-24

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