EP 1020100 A1 20000719 - SUPPLY CIRCUIT FOR A FLUORESCENT TUBE INSTALLATION
Title (en)
SUPPLY CIRCUIT FOR A FLUORESCENT TUBE INSTALLATION
Title (de)
VERSORGUNGSSCHALTUNG FÜR EINE LEUCHTRÖHRENANLAGE
Title (fr)
CIRCUIT D'ALIMENTATION POUR UNE INSTALLATION A TUBES FLUORESCENTS
Publication
Application
Priority
- CH 9800432 W 19981009
- CH 237897 A 19971010
Abstract (en)
[origin: WO9920084A1] The invention relates to a supply circuit with a high-voltage transformer (T) which is connected, input-end, to a supply voltage with a frequency of several hundred Hz, and which is formed without an air gap. To replace the air gap in the transformer (T), an electronic control (EST) is nonetheless used in the supply circuit, which imitates the current-limiting function of an air gap. The frequency of the supply voltage is between 300 and 800 Hz, preferably 400Hz. As these frequencies are higher than the usual network frequency of 50/60 Hz, the size and weight of the transformer (T) can be considerably reduced.
IPC 1-7
IPC 8 full level
H05B 41/16 (2006.01); H05B 41/24 (2006.01); H05B 41/288 (2006.01); H05B 41/392 (2006.01)
CPC (source: EP US)
H05B 41/2881 (2013.01 - EP US); H05B 41/3927 (2013.01 - EP US); Y10S 315/07 (2013.01 - EP US)
Citation (search report)
See references of WO 9920084A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 9920084 A1 19990422; CH 692375 A5 20020515; DE 59806882 D1 20030213; EP 1020100 A1 20000719; EP 1020100 B1 20030108; ES 2189243 T3 20030701; JP 2001520451 A 20011030; US 6236169 B1 20010522
DOCDB simple family (application)
CH 9800432 W 19981009; CH 237897 A 19971010; DE 59806882 T 19981009; EP 98946202 A 19981009; ES 98946202 T 19981009; JP 2000516510 A 19981009; US 52905800 A 20000705