The ambient temperature may have a slight effect on that curve also since
as, as Rich so graciously pointed out, "the resistance goes up as the
temperature_"

Perhaps lamp manufacturer sites?


"Existential Angst" wrote in message
...
Does anyone know what this curve looks like? I would actually like a V vs.
I curve for a typical incandescant.
Googled some, wiki has an inneresting table on incandescant efficiency
http://en.wikipedia.org/wiki/Incandescent_light_bulb

but I haven't found an actual V vs I graph. I spose I could just take a
bulb and jot down some numbers, using a variac, eh?

Presumably a similar curve would arise from both AC and DC?



"Rich Grise" wrote in message
...
Just a nitpick, but technically, the resistance goes up as the
temperature_
increases. :-)


Josepi wrote:
Lightbulbs are not a linear load. Their resistance goes up as the
voltage increases. You would need to monitor the voltage and the current
to get anything useful.