[opendtv] Tungsten resistivity
- From: Mark Schubin <tvmark@xxxxxxxxxxxxx>
- To: Open DTV Forum <opendtv@xxxxxxxxxxxxx>
- Date: Tue, 14 Sep 2004 10:37:29 -0400
One more note:
The resistivity of tungsten increases with temperature. It is more than
twice as high at 3100 degrees K (the temperature of tungsten emitting
3200K color temperature) as it is at 1700 degrees K. Thus, any cooling
will lower the filament resistance, drawing more current, heating the
filament. There is no other current regulation in an incandescent lamp.
TTFN,
Mark
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