[SI-LIST] Inductance of wire section
- From: sdb@xxxxxxxxxx (Stuart Brorson)
- To: si-list@xxxxxxxxxxxxx
- Date: Thu, 4 Sep 2003 15:53:04 -0400 (EDT)
Hi gang --
Please pardon me if this is a FAQ, but does anybody have a quick
rule-of-thumb for the inductance to expect from a 1 cm length of 22
gauge wire-wrap wire in free space? Yes, I've searched the web &
looked at a few pages which are far too detailed to be really useful
-- all I want is an order-of-magnitude number, and the websites are
all about calculating the number by integrating Maxwell's equations.
So far, I've been using a figure of around 360 nH/m, which is the
inductance of a common 50ohm transmission line. If the real number is
larger or smaller by a factor of 2 to 5 I don't care a lot, but I would
like to make sure that the "rule-of-thumb" number is *not* orders of
magnitude larger or smaller than this.
What rule-of-thumb do you use?
Stuart
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