EP 0411617 A2 19910206 - Method of lighting discharge lamp and discharge lamp lighting apparatus.
Title (en)
Method of lighting discharge lamp and discharge lamp lighting apparatus.
Title (de)
Verfahren und Apparat zum Starten von einer Entladungslampe.
Title (fr)
Méthode et appareil pour amorcer une lampe à décharge.
Publication
Application
Priority
- JP 19791889 A 19890801
- JP 20293589 A 19890807
Abstract (en)
A discharge lamp (18) is connected to the output terminal of a lighting circuit (100). A starting circuit (200) is connected in parallel with the discharge lamp (18). A driver (104) and a transistor (116) in the lighting circuit (100), and a transistor (64) on the starting circuit (200) side serve to control a timing at which an output from the lighting circuit (100) is supplied to the discharge lamp (18). When a power source (12) is tuned on, a glow discharge of the discharge lamp (18) is maintained by the transistor (64) using power supplied from a pulse transformer (202) of the starting circuit (200). Subsequently, the glow discharge is shifted to an arc discharge by power supply from the lighting circuit (100) in accordance with a predetermined timing control operation by means of the driver (104) and the transistor (116), thereby lighting the discharge lamp (18).
IPC 1-7
IPC 8 full level
H05B 41/04 (2006.01); H05B 41/288 (2006.01); H05B 41/38 (2006.01)
CPC (source: EP)
H05B 41/042 (2013.01); H05B 41/2881 (2013.01); H05B 41/382 (2013.01); H05B 41/388 (2013.01)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 90114791 A 19900801