EP 0697803 B1 20000301 - Circuit for operating discharge lamps
Title (en)
Circuit for operating discharge lamps
Title (de)
Schaltungsanordnung zur Ansteuerung von Gasentladungslampen
Title (fr)
Circuit pour alimenter des lampes à décharge
Publication
Application
Priority
CH 254694 A 19940818
Abstract (en)
[origin: EP0697803A2] The circuit has a bias stage connected between the positive and negative terminals of a rectifier bridge (D1,D2,D3,D4) coupled to the AC network, the bias stage including a filter circuit (C1,C2,C3,DR1,DR2) and a HF oscillator (R2-R6,T1,T2,D5,D6,C6,I1,I2). The inductive windings (I1,I2) of the HF oscillator are wound on a common core with a third inductance (I3,I4) to form a current transformer. A series current limiting circuit with an inductance (DR3,I4) and a capacitor (C8) is inserted in the current circuit between one terminal of the discharge lamp (FL) and the rectifier bridge.
IPC 1-7
IPC 8 full level
H05B 41/24 (2006.01); H05B 41/28 (2006.01)
CPC (source: EP KR)
H05B 41/26 (2013.01 - KR); H05B 41/28 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0697803 A2 19960221; EP 0697803 A3 19960501; EP 0697803 B1 20000301; AT E190185 T1 20000315; CN 1118980 A 19960320; DE 59507872 D1 20000406; ES 2146685 T3 20000816; JP H0896979 A 19960412; KR 100396386 B1 20031206; KR 960009805 A 19960322
DOCDB simple family (application)
EP 95112985 A 19950817; AT 95112985 T 19950817; CN 94118428 A 19941216; DE 59507872 T 19950817; ES 95112985 T 19950817; JP 20977295 A 19950817; KR 19950025352 A 19950818