EP 1103165 A1 20010530 - ELECTRONIC BALLAST FOR AT LEAST ONE LOW-PRESSURE DISCHARGE LAMP
Title (en)
ELECTRONIC BALLAST FOR AT LEAST ONE LOW-PRESSURE DISCHARGE LAMP
Title (de)
ELEKTRONISCHES VORSCHALTGERÄT FÜR MINDESTENS EINE NIEDERDRUCK-ENTLADUNGSLAMPE
Title (fr)
BALLAST ELECTRONIQUE DESTINE A AU MOINS UNE LAMPE A DECHARGE BASSE TENSION
Publication
Application
Priority
- DE 19923945 A 19990525
- EP 0003573 W 20000419
Abstract (en)
[origin: US6366031B2] An electronic ballast for a low-pressure discharge lamp (LA) contains an inverter that is fed with direct voltage (UBUS) and the output of which is connected to a load circuit containing terminal contacts for the lamp (LA), a heating transformer that has a primary winding (Tp), which is connected to the output of the inverter, and a respective secondary winding (Ts1, Ts2), which is located in a heating circuit with a coil (W1, W2), for heating each of the two electrodes of the lamp (LA), and a series circuit arrangement that is connected in parallel with the load circuit and which contains the primary winding (Tp) of the heating transformer and an electronic switch arrangement (S3, S4). For the purpose of identifying the type of lamp and the state of the lamp, the currents in one of the two heating circuits and in the primary winding (Tp) of the heating transformer are measured and evaluated.
IPC 1-7
IPC 8 full level
H05B 41/295 (2006.01); H05B 41/298 (2006.01)
CPC (source: EP US)
H05B 41/295 (2013.01 - EP US); H05B 41/2985 (2013.01 - EP US); Y10S 315/07 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0072640 A1 20001130; AT E245336 T1 20030815; AU 4553600 A 20001212; AU 761194 B2 20030529; BR 0006149 A 20010417; DE 19923945 A1 20001228; DE 50002900 D1 20030821; EP 1103165 A1 20010530; EP 1103165 B1 20030716; NZ 509309 A 20020828; US 2001002780 A1 20010607; US 6366031 B2 20020402
DOCDB simple family (application)
EP 0003573 W 20000419; AT 00927003 T 20000419; AU 4553600 A 20000419; BR 0006149 A 20000419; DE 19923945 A 19990525; DE 50002900 T 20000419; EP 00927003 A 20000419; NZ 50930900 A 20000419; US 76786801 A 20010124