I've always wondered if the small 12V halogens last longer because the filament is thicker (has to be due to lower voltage, i.e. higher current).
I think the main issue is evaporation of the filament. It will develop thinner spots, which get hotter and evaporate faster, thus get thinner faster.
I've always wondered if the small 12V halogens last longer because the filament is thicker (has to be due to lower voltage, i.e. higher current).
I think the main issue is evaporation of the filament. It will develop thinner spots, which get hotter and evaporate faster, thus get thinner faster.
Halogens (and xenons) are unique in that they constantly boil and re-absorb the filament material due to the gas in the bulb.
They're really quite amazing and energy efficient, as far as a resistor that lights up goes.
Halogens (and xenons) are unique in that they constantly boil and re-absorb the filament material due to the gas in the bulb.
They're really quite amazing and energy efficient, as far as a resistor that lights up goes.
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