EP 0797377 B1 19990526 - Improved half bridge drive for discharge lamps
Title (en)
Improved half bridge drive for discharge lamps
Title (de)
Verbesserte Halbbrückenansteuerung von Leuchtstofflampen
Title (fr)
Circuit inverseur à pont amélioré pour lampes à décharge
Publication
Application
Priority
DE 19611417 A 19960322
Abstract (en)
[origin: EP0797377A1] The driver utilises a method of half-bridge control stabilisation and a safety switch-off circuit for driving a fluorescent lamp with protection against externally coupled noise. High frequency noise voltages coupled into the circuit are tapped by at least a secondary winding (RKc) of an inductance with a primary winding (RKa) in the lamp's current path (La) and are rectified. The rectified voltage charges a capacitance (C5) and optimally ensures switch-off element (Q7) operation via the safety switch-off circuit (SAK).
IPC 1-7
IPC 8 full level
H05B 41/285 (2006.01); H05B 41/298 (2006.01); H05B 41/39 (2006.01)
CPC (source: EP)
H05B 41/2851 (2013.01); H05B 41/2985 (2013.01)
Citation (examination)
US 5192896 A 19930309 - QIN KONG [US]
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0797377 A1 19970924; EP 0797377 B1 19990526; CA 2200500 A1 19970922; DE 19611417 A1 19970925; DE 59700170 D1 19990701
DOCDB simple family (application)
EP 97103848 A 19970307; CA 2200500 A 19970320; DE 19611417 A 19960322; DE 59700170 T 19970307