At 08:33 AM 01/10/2010, you wrote:
>   OK, Russell and all,
>
>You have piqued my interest in nichrome wire........anybody know where
>you get such wire?

eBay or McMaster for two places.

>And another thing....how is electrical connection made to said wire? Is
>it welded? Crimped?


http://www.allaboutcircuits.com/vol_1/chpt_12/6.html

Material                        Tempco(/K) at 20=B0C

Nichrome ------- Alloy ---------------- 0.00017
Nichrome V ----- Alloy ---------------- 0.00013
Manganin ------- Alloy ------------ +/- 0.000015
Constantan ----- Alloy --------------- -0.000074

Nichrome is the least solderable of the alloys above and the worst
tempco. It's most useful as heater wire, since it oxidizes
slowly even at very high temperatures.

Even in the cheaper multimeters the bare hairpin shunt is probably
better tempco than some random piece of NiCr wire you could scare up.

Just calibrate out the span error!

>Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the rewar=
d"
speff@interlog.com             Info for manufacturers: http://www.trexon.co=
m
Embedded software/hardware/analog  Info for designers:  http://www.speff.co=
m




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