Nice one!!

According to the second link the current curve is not perfectly linear but
very close by the few specimens I checked.
Buggers used a log scale one direction though. GRRRRRR...

Anybody scratch their LCD screen with a metal ruler?
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"Robert Nichols" wrote in message ...
http://lmgtfy.com/?q=tungsten+filament+resistance

The second hit is a document with a diagram showing typical current vs.
voltage for input voltages from 50% to 150% of normal. It shows that at
50% voltage the lamp draws 69% of normal current, so the power would be
34.5%, rather than the 25% you would get for a fixed resistance. For
V=150% the current is 125%, yielding 187.5% of the nominal power.


http://www.intl-lighttech.com/applic...ment-lamps.pdf