Digital ballast for high pressure sodium lamp. Schematics?

Jan 22, 2007 2 Replies
R

Hi!



Those ballasts are available for around $150 in aquaristic shops, and are told to have much better efficiency, prolong the life of the bulb etc. I was unable to find any schematics, or even ICs of which I could use at least the datasheets. Anyone has links, or whatever might help me?



Thanks, Ragnar


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D

Digital ballast?? In the sense that they use on-off high frequency switching . . .

Check out

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Ingenious starter.

International Rectifier has an IC or two scroll down to figure 10

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