EP 3879934 A1 20210915 - LED DRIVE CIRCUIT, LED DRIVE DEVICE AND LAMP
Title (en)
LED DRIVE CIRCUIT, LED DRIVE DEVICE AND LAMP
Title (de)
LED-TREIBERSCHALTUNG, LED-TREIBERVORRICHTUNG UND LAMPE
Title (fr)
CIRCUIT DE COMMANDE DE DEL, DISPOSITIF DE COMMANDE DE DEL ET LAMPE
Publication
Application
Priority
CN 202020292232 U 20200311
Abstract (en)
The present application relates to the technical field of LED driving, and provides an LED drive circuit, an LED drive device and a lamp. The AC voltage is converted into a DC voltage through a rectifier circuit, and a constant current drive module is provided to receive a drive control signal and the DC voltage, and generate a constant current drive signal based on the drive control signal and the DC voltage, a switch control module is provided to generate a switch control signal according to the constant current drive signal to control On or Off of the switch module, so that a leakage current of the capacitor loop formed by the capacitor module is reduced, thereby solving the problem of afterglow effect of the light source module caused by the current leakage in the current LED drive circuit during a standby state.
IPC 8 full level
H05B 45/30 (2020.01); H05B 45/59 (2022.01)
CPC (source: EP US)
H05B 45/30 (2020.01 - EP); H05B 45/59 (2022.01 - EP US); H05B 45/385 (2020.01 - EP)
Citation (search report)
[XI] US 2016073471 A1 20160310 - WYNNYCZENKO OLIVER [AT]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3879934 A1 20210915; EP 3879934 B1 20240103; CN 211930917 U 20201113
DOCDB simple family (application)
EP 21155270 A 20210204; CN 202020292232 U 20200311