EP 1040733 A1 20001004 - ELECTRONIC LAMP BALLAST
Title (en)
ELECTRONIC LAMP BALLAST
Title (de)
ELEKTRONISCHES VORSCHALTGERÄT
Title (fr)
BALLAST ELECTRONIQUE
Publication
Application
Priority
- DE 19757600 A 19971223
- EP 9807429 W 19981119
Abstract (en)
[origin: WO9934650A1] The invention relates to an electronic lamp ballast for operating gas-discharge lamps (G1, G2), where the electronic lamp ballast is controlled by means of a control circuit (IC2). The control circuit (IC2) controls the operation of the electronic lamp ballast in accordance with certain predetermined operating states (I - VIII) in which the control circuit (IC2) monitors certain status variables of the electronic lamp ballast or of a gas-discharge lamp (G1, G2) in accordance with the operating status. It changes from one operating status to a new operating status only if the status variables being monitored meet a condition assigned to the current operating status.
IPC 1-7
IPC 8 full level
H05B 41/295 (2006.01); H05B 41/298 (2006.01); H05B 41/38 (2006.01)
CPC (source: EP)
H05B 41/2981 (2013.01)
Citation (search report)
See references of WO 9934650A1
Designated contracting state (EPC)
AT CH DE LI
DOCDB simple family (publication)
WO 9934650 A1 19990708; AT E220849 T1 20020815; AU 1755699 A 19990719; DE 59804841 D1 20020822; EP 1040733 A1 20001004; EP 1040733 B1 20020717; ZA 9811768 B 19990629
DOCDB simple family (application)
EP 9807429 W 19981119; AT 98962360 T 19981119; AU 1755699 A 19981119; DE 59804841 T 19981119; EP 98962360 A 19981119; ZA 9811768 A 19981222