EP 0679046 B1 19990602 - Circuit for operating low-pressure discharge lamps
Title (en)
Circuit for operating low-pressure discharge lamps
Title (de)
Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen
Title (fr)
Circuit pour alimenter des lampes à décharge basse-pression
Publication
Application
Priority
DE 4410492 A 19940325
Abstract (en)
[origin: JPH07272885A] PURPOSE: To guarantee elimination of a sinusoidal system current as much as possible, to provide an improved system power factor compared with the conventional technology, and to make suitable to light a low pressure discharge lamp having a relatively high lighting voltage. CONSTITUTION: This circuit device interrupts the charging of a smoothing capacitor C2 to feed the power to an inverter WR by the switching rhythm of the inverter WR. And thereby, a system having the system power factor more than 0.98, and capable of removing a nearly sinusoidal wave form current is provided in cooporation with a storage reactor L1 preconnected to high-frequency wave rectifying bridges D1, D2, D3, and D4, and a system voltage rectifier output capacitor C1, and interacting with a negative feedback capacitor CG and a backup capacitor CS.
IPC 1-7
IPC 8 full level
H05B 41/24 (2006.01); H05B 41/28 (2006.01); H05B 41/282 (2006.01)
CPC (source: EP US)
H05B 41/28 (2013.01 - EP US); H05B 45/355 (2020.01 - EP); Y10S 315/07 (2013.01 - EP)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
DE 4410492 A1 19950928; DE 59506071 D1 19990708; EP 0679046 A1 19951025; EP 0679046 B1 19990602; JP 3599823 B2 20041208; JP H07272885 A 19951020; US 5521467 A 19960528
DOCDB simple family (application)
DE 4410492 A 19940325; DE 59506071 T 19950313; EP 95103597 A 19950313; JP 8883095 A 19950322; US 38917995 A 19950215