EP 1051882 A1 20001115 - CIRCUIT FOR OPERATING AN LED LUMINOUS SIGNAL
Title (en)
CIRCUIT FOR OPERATING AN LED LUMINOUS SIGNAL
Title (de)
SCHALTUNG ZUM BETREIBEN EINES LED-LEUCHTZEICHENS
Title (fr)
CIRCUIT SERVANT A FAIRE FONCTIONNER UN SIGNAL LUMINEUX A DIODES ELECTROLUMINESCENTES
Publication
Application
Priority
- DE 9900180 W 19990115
- DE 19802895 A 19980121
Abstract (en)
[origin: WO9938361A1] The breaking distances of electronic switches (T) are parallel connected in relation to the light emitting diodes (LD) of a luminous signal, by means of which they are short circuited when no supply voltage (U=) is available. The interference voltage coupled to the light diodes approximately on the supply lines (L1, L2) cannot light the luminous diodes. Once the supply voltage for the light emitting diodes exceeds a given threshold value, the short circuits are eliminated and the light emitting diodes activated. The electronic switches are preferably embodied as self-conductive field effect transistors whose source gate distances are parallel connected to the series resistors that are series connected to the corresponding series resistors (R).
IPC 1-7
IPC 8 full level
B61L 5/18 (2006.01); H03K 3/00 (2006.01); H05B 44/00 (2022.01)
CPC (source: EP US)
B61L 5/1881 (2013.01 - EP US); H05B 45/37 (2020.01 - US); B61L 2207/02 (2013.01 - EP)
Designated contracting state (EPC)
AT CH DE GB LI
DOCDB simple family (publication)
WO 9938361 A1 19990729; AT E205997 T1 20011015; DE 19802895 A1 19990722; DE 59900274 D1 20011025; EP 1051882 A1 20001115; EP 1051882 B1 20010919; NO 20003778 D0 20000721; NO 20003778 L 20000920; NO 325779 B1 20080714
DOCDB simple family (application)
DE 9900180 W 19990115; AT 99907277 T 19990115; DE 19802895 A 19980121; DE 59900274 T 19990115; EP 99907277 A 19990115; NO 20003778 A 20000721