Title:
バラスト回路
Document Type and Number:
Japanese Patent JP2005507554
Kind Code:
A
Abstract:
A ballast arrangement is provided for igniting and operating a discharge lamp. The lamp is connected in a commutating bridge in series with an inductor and parallel to a capacitor. The inductor and the capacitor together form a resonance circuit. During ignition, the bridge is commutated at a comparatively high frequency that changes with respect to time. The series resonance circuit has a resonance frequency that is close to an odd harmonic of the comparatively high frequency.
More Like This:
| JPS5926115 | [Title of the Invention] Discharge lamp lighting device |
| JPH07236286 | INVERTER |
Inventors:
Langeslag Wilhelms Hm
Application Number:
JP2003541321A
Publication Date:
March 17, 2005
Filing Date:
October 22, 2002
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
H05B41/24; H05B41/18; H05B41/288; H05B41/38; (IPC1-7): H05B41/24; H05B41/18
Attorney, Agent or Firm:
Susumu Tsugaru
Akihiko Miyazaki
Fueda Shusen
Akihiko Miyazaki
Fueda Shusen