EP 0678078 B1 19980902 - SWITCHING CIRCUIT FOR RAILWAY LIGHT SIGNAL INSTALLATION
Title (en)
SWITCHING CIRCUIT FOR RAILWAY LIGHT SIGNAL INSTALLATION
Title (de)
SCHALTUNGSANORDNUNG FÜR EISENBAHN-LICHTSIGNALANLAGEN
Title (fr)
CIRCUIT DE COMMUTATION POUR INSTALLATION DE SIGNALISATION LUMINEUSE POUR CHEMIN DE FER
Publication
Application
Priority
- CH 9400205 W 19941017
- CH 333193 A 19931105
Abstract (en)
[origin: WO9512512A1] The circuit for emitting optical signals adapted to the ambient light consists of a transformer (XFMR) connected on the primary side to an a.c. input (INP) and on the secondary side via a rectifier circuit (GS) to the input of at least one lighting unit (BE1) fitted with electroluminescent diodes (LD1, ..., LDx). The circuit is compatible with circuits using incandescent lamps, but has a much lower error probability.
IPC 1-7
IPC 8 full level
B61L 5/18 (2006.01); H05B 44/00 (2022.01); H05B 45/50 (2022.01)
CPC (source: EP US)
B61L 5/1881 (2013.01 - EP US); H05B 45/12 (2020.01 - EP US); H05B 45/50 (2020.01 - EP US); B61L 2207/02 (2013.01 - EP)
Designated contracting state (EPC)
AT DE DK FR GB IT NL SE
DOCDB simple family (publication)
WO 9512512 A1 19950511; AT E170472 T1 19980915; DE 59406833 D1 19981008; DK 0678078 T3 19990607; EP 0678078 A1 19951025; EP 0678078 B1 19980902; NO 951743 D0 19950504; NO 951743 L 19950705
DOCDB simple family (application)
CH 9400205 W 19941017; AT 94929449 T 19941017; DE 59406833 T 19941017; DK 94929449 T 19941017; EP 94929449 A 19941017; NO 951743 A 19950504