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Originally Posted by striker_1818
..these high intensity discharged light output is controlled by the ballast. That's why you don't find ballasts with our halogen bulbs in our cars.
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I think thats part of the reason for your bad reps, you are trying to present a strong argument with false information.
Light is not controlled or limited by the HID ballast. The ballast is simply a transformer, converting 12 volts to some 20 kajillion volts or whatever it is required to produce an arc in the HID bulb. It IS limiting voltage, but not trying to limit light intensity as you state.
Halogen bulbs do NOT have ballasts......correct.......but its not because halogen lights need to control the output, its because the halogen bulb is designed for 12 volts.
And to further analyze, you could use these PNP HID kits. You would either have to engineer and design a shield to limit the light output to mimic the same light emission of the halogen bulb or you would have to stick the PNP bulbs in a projector, which is NOT sensitive to filament location.