Tempco, wire, etc....

[POLARIS at VAX1.Mankato.MSUS.EDU]

My physics book states:

R=R naught [1 + A(T - T naught)]  where R naught is the initial resistance
at T naught, and A is really alpha, a temperature coefficient of resistivity
in 1/C degrees.  Alpha for copper is = 0.00393 and for Nichrome alloy
is = 0.0004.    (Also, T-Tnaught can be thought of as delta T (I think))

Hope this helps...

DAF