On Wednesday, 28 June 2017 22:05:39 UTC+1, wrote:
On Wednesday, June 28, 2017 at 4:58:08 PM UTC-4, tabby wrote:


Since dimming is usually done at assorted levels, the above effect has sod all effect on lamp life in the real world in most cases.

Suffice it that if a halogen lamp operates at 80% of nominal voltage, the

I thought you said 80% of light output, an entirely different point to 80% of voltage

halogen effect (tungsten vapor re-depositing on the filament) will not take place - however that reduction-in-voltage occurs.

At 80% voltage that would be an irrelevance. I presumed yuo know your filament lamp equations, now I'm not sure.


NT