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Old 3rd October, 2005, 06:17 PM
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Quote:
Originally Posted by trodas
gizmo, do you happen by any chance have any material (curves) about it? Even it (the resistance versus temps curves) probably very much depends on the semiconductor material used, it could be interesting.
I do not have any curves any more, but if memory serves it was pretty a pretty typical linear transfer function, with the interesting exception that the temp coefficient was negative. This actually is rather useful, because it means that you can make a fairly effective first order temperature compensation network by selecting an appropriate value of metal film or metal oxide resistor (which has a similar curve, but a positive temp coefficient).

However, the point Áedán is making is valid. Although the intrinsic resistance to current flow of the material decreases with increasing temperature, Brownian motion also increases with increasing temp, and power handling capability decreases drastically with increasing temperature. Therefor, reducing temperature is a good thing.
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