Discharge lamp lighting device

Details Discharge lamp lighting device Discharge lamp lighting device

1997-05-29

1999-08-24

Wong, Don

Electric lamp and discharge devices: systems

Current and/or voltage regulation

315209R, 315307, H05B 3702

Patent

active

059428597

ABSTRACT:
A discharge lamp lighting device include an inverter circuit section supplying a square wave AC power from a DC power source to a discharge lamp, and a high voltage pulse generating unit applying, upon starting, a high voltage pulse to the discharge lamp to have it started, with an arrangement for lighting the discharge lamp by the square wave AC power made to be lower in the square wave frequency upon non-loading than that upon lighting, and controlling the square wave frequency to remain as that upon the non-loading for a fixed period immediately after detection of the start of discharge of the lamp.

REFERENCES:
patent: 4614898 (1986-09-01), Itani et al.
patent: 4734624 (1988-03-01), Nagase et al.

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