The voltage shape does not differ as much between lamp types, all discharges end up with about rectangular waveform, the only major differences are in the height of the reignition spike (after current zero cross). But as the reignition spike is very short in the time, it play's negligible role in the ballast current, neither do the small variations in the exact shape. So if the F30 and F40 have the same voltage, they would run on the same ballast at the same wattage. The only difference is the filament, what is always designed for given operating current, so the F30 would have thinner wire than F34, so the F30 filament would run hotter, what usually mean the lamp would start easier (on ballast with high impedance heating, so mainly preheat). And the shorter length of the F30 play the role as well, on all ballasts...
|
|
|
Logged
|