Power supply device for energizing discharge lamp

Details Power supply device for energizing discharge lamp Power supply device for energizing discharge lamp

2005-08-16

2005-08-16

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S307000, C315S308000, C315SDIG004

Reexamination Certificate

active

06930453

ABSTRACT:
A discharge lamp energizing power supply device has a full-wave rectifier circuit for rectifying an AC voltage obtained from a commercial AC power supply system into a full-wave rectified waveform, a booster circuit for boosting the voltage of the full-wave rectified waveform, a boosted-voltage changing circuit for changing the boosted voltage output from the booster circuit, a voltage lowering circuit for lowering an output voltage from the boosted-voltage changing circuit and outputting an activating output voltage for activating a discharge lamp and an energizing output voltage for keeping the discharge lamp energized, and a control device for controlling a boosted voltage in the boosted-voltage changing circuit within a predetermined range based on the voltage of the full-wave rectified waveform when the voltage lowering circuit outputs the energizing output voltage.

REFERENCES:
patent: 6437515 (2002-08-01), Kamoi et al.
patent: 6605906 (2003-08-01), Okamoto et al.
patent: 2001-52886 (2001-02-01), None
patent: 2002-110382 (2002-04-01), None
patent: 2002-231485 (2002-08-01), None

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