Cold cathode fluorescent discharge lamp apparatus and...

Details Cold cathode fluorescent discharge lamp apparatus and... Cold cathode fluorescent discharge lamp apparatus and...

2008-01-01

2008-01-01

Vo, Tuyet (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S307000, C315S224000

Reexamination Certificate

active

07315138

ABSTRACT:
A discharge lamp operating device includes a voltage application unit that applies to a discharge lamp an alternating-current (AC) voltage for operation of the discharge lamp, and a frequency setting unit that sets a frequency of the AC voltage to a first frequency for ignition of the discharge lamp and sets the frequency of the AC voltage to a second frequency during operation of the discharge lamp after the ignition. In the discharge lamp operating device, the second frequency is lower than the first frequency.

REFERENCES:
patent: 5914571 (1999-06-01), Beasley
patent: 6211623 (2001-04-01), Wilhelm et al.
patent: 6998793 (2006-02-01), Sheng
patent: 2006/0038513 (2006-02-01), Henry
patent: 2007/0052371 (2007-03-01), Fukuda et al.
patent: 10-335084 (1998-12-01), None
patent: 2001-237093 (2001-08-01), None

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