EP 0852106 A1 19980708 - A METHOD AND AN ARRANGEMENT FOR CONTROLLING GAS DISCHARGE LAMPS
Title (en)
A METHOD AND AN ARRANGEMENT FOR CONTROLLING GAS DISCHARGE LAMPS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR STEUERUNG VON GASENTLADUNGSLAMPEN
Title (fr)
PROCEDE ET DISPOSITIF DE REGULATION DE LAMPES A DECHARGE GAZEUSE
Publication
Application
Priority
- SE 9601149 W 19960916
- SE 9503252 A 19950919
Abstract (en)
[origin: WO9711583A1] A method for controlling a drive unit for gas discharge lamps where applied power consists of a DC voltage applied to a converter stage which is adapted to convert the DC voltage to an AC voltage suitable for the lamp, wherein the AC voltage is applied to a lamp circuit that includes a lamp (2) and an inductance (3) connected in series with the lamp, and wherein there is provided a lamp ignition circuit (4). The invention is characterized in that there is connected in a current branch of the drive unit (1) common to both the AC voltage side and the DC voltage side a current measuring sensor (5) whose output signal is used to generate a first control signal (13) corresponding to the power supplied to the lamp circuit, and a second control signal (14) corresponding to the peak current of the lamp circuit or, alternatively, corresponding to the reactive power present in the lamp circuit; and in that a third control signal (17) which constitutes the dominant signal of the first (13) and the second (14) control signal or, alternatively, a function thereof, is caused to control the current supply to the lamp in a feedback system.
IPC 1-7
IPC 8 full level
H05B 41/285 (2006.01); H05B 41/392 (2006.01)
CPC (source: EP)
H05B 41/2855 (2013.01); H05B 41/2856 (2013.01); H05B 41/392 (2013.01)
Citation (search report)
See references of WO 9711583A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IT LI NL
DOCDB simple family (publication)
WO 9711583 A1 19970327; AT E213383 T1 20020215; DE 69619252 D1 20020321; DE 69619252 T2 20021121; EP 0852106 A1 19980708; EP 0852106 B1 20020213; SE 515566 C2 20010827; SE 9503252 D0 19950919; SE 9503252 L 19970320
DOCDB simple family (application)
SE 9601149 W 19960916; AT 96931343 T 19960916; DE 69619252 T 19960916; EP 96931343 A 19960916; SE 9503252 A 19950919