Method of supplying current to a sodium high-pressure discharge

Details Method of supplying current to a sodium high-pressure discharge Method of supplying current to a sodium high-pressure discharge

1994-01-18

1996-01-02

Neyzari, Ali

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315224, 315287, 315209R, H05B 4136

Patent

active

054811627

ABSTRACT:
To provide for optimum control of a sodium high-pressure discharge lamp operating under saturated operating conditions, such that the lamp will be operating stably and providing light output which is an optimum with respect to the color rendition index (Ra), light output or luminous flux, and color temperature, without regard to manufacturing tolerances or variations in power supply voltage, the energy supplied to the lamp is controlled with respect to a quotient formed of lamp voltage and lamp current (V.sub.L /I.sub.L), said quotient being determined with respect to optimum light values. The power supply for the lamp (3) either is a stabilized output voltage power supply (22) in which the output current is controlled, or an oscillator (32) providing bursts or power pulses (10, 10') formed of oscillations (11). Both the number of power pulses as well as holding pulses (12) between power pulses (to prevent extinction of the lamp), energy level of the respective pulses and frequency of oscillations, respectively, can be controlled to obtain the optimum value for the quotient of lamp voltage and lamp current.

REFERENCES:
patent: 4560908 (1985-12-01), Stupp
patent: 5103141 (1992-04-01), Keijser et al.
patent: 5182503 (1993-01-01), Denneman et al.
patent: 5198728 (1993-03-01), Bernitz et al.
Journal of the Illuminating Engineering Society, vol. 21, No. 1, Dec. 1992, ew York, pp. 60-68, article by Rutan et al, "Practical Application of Pulsed High Pressure Sodium Lamp Technology".

Affiliated with

Also associated with

Rating

Method of supplying current to a sodium high-pressure discharge does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of supplying current to a sodium high-pressure discharge , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of supplying current to a sodium high-pressure discharge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-237655