Re: high-resistance wire 40kOhm per meter

On Tue, 17 Mar 2009 22:13:45 GMT, Rich Grise <rich@xxxxxxxxxxx> wrote:

On Tue, 17 Mar 2009 19:46:11 +0100, Michael Koch wrote:

the NIST E-field detector is built with high-resistance wire, about
40kOhm per meter. It's described here:
http://scott-inc.com/html/nist.htm

Does anybody know a source for this wire?

You can get 0.0031" OD nichrome wire at McMaster-Carr:
http://www.mcmaster.com/#catalog/115/3675

Nichrome isn't going to work. Evanohm alloy has about 5 times the resistivity
of nichrome, and 47 gauge Evanohm (http://www.nmia.com/~elecsurp/) is only about
1/20 the resistance/ft that the OP wants. I'm afraid he's going to have to use
some kind of carbon impregnated item.


But you'll have to figure out the resistance per foot on your own.

Thinner wire is probably available - I just happened to know MMC has
it off the top of my head.

Good Luck!
Rich

.

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