Litz wire
in [Design]
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From: Tim Williams on 19 Feb 2010 14:21 Who sells this stuff (without paying for miles at a time)? I'm especially interested in stupid thick stuff, like, as large as 8AWG equivalent. Nebraska Surplus for instance doesn't stock wire like this. Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
From: George Herold on 19 Feb 2010 14:51 On Feb 19, 2:21 pm, "Tim Williams" <tmoran...(a)charter.net> wrote: > Who sells this stuff (without paying for miles at a time)? > > I'm especially interested in stupid thick stuff, like, as large as 8AWG > equivalent. Nebraska Surplus for instance doesn't stock wire like this.. > > Tim > > -- > Deep Friar: a very philosophical monk. > Website:http://webpages.charter.net/dawill/tmoranwms We get Litz wire from MWS but nothing that big. If you don't need that much have you thought of 'rolling your own'? George H.
From: Tim Williams on 19 Feb 2010 17:18 "George Herold" <ggherold(a)gmail.com> wrote in message news:550831a9-5935-4e3d-b37e-c664ebd9d752(a)o3g2000yqb.googlegroups.com... > We get Litz wire from MWS but nothing that big. If you don't need > that much have you thought of 'rolling your own'? I do sometimes, but only for small things. I'm contemplating 10A at 1MHz, so it needs to be pretty fine = way more strands than I'd want to deal with. I actually have some copper rope, which is about 1/4" diameter and looks to be made of 28AWG or so. I don't remember how many strands it is, but if I guess the rope is wound from 7 strands of 31 strand twist, that's 7*31 = 217. If 28AWG is good for ~200mA, 217 strands should be good for 40A, which sounds about right, I'd call it 8 or 10AWG equivalent. I salvaged this stuff from some old motor driver, which used a spool of this stuff for air-core inductors. Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
From: Tim Wescott on 19 Feb 2010 17:58 On Fri, 19 Feb 2010 16:18:49 -0600, Tim Williams wrote: > "George Herold" <ggherold(a)gmail.com> wrote in message > news:550831a9-5935-4e3d-b37e-c664ebd9d752(a)o3g2000yqb.googlegroups.com... >> We get Litz wire from MWS but nothing that big. If you don't need that >> much have you thought of 'rolling your own'? > > I do sometimes, but only for small things. I'm contemplating 10A at > 1MHz, so it needs to be pretty fine = way more strands than I'd want to > deal with. > > I actually have some copper rope, which is about 1/4" diameter and looks > to be made of 28AWG or so. I don't remember how many strands it is, but > if I guess the rope is wound from 7 strands of 31 strand twist, that's > 7*31 = 217. If 28AWG is good for ~200mA, 217 strands should be good for > 40A, which sounds about right, I'd call it 8 or 10AWG equivalent. I > salvaged this stuff from some old motor driver, which used a spool of > this stuff for air-core inductors. > > Tim Isn't there some magic braiding pattern for Litz wire? -- www.wescottdesign.com
From: Dave M on 19 Feb 2010 20:29
Tim Williams wrote: > Who sells this stuff (without paying for miles at a time)? > > I'm especially interested in stupid thick stuff, like, as large as > 8AWG equivalent. Nebraska Surplus for instance doesn't stock wire > like this. > Tim I don't know what their minimum order is, but http://www.newenglandwire.com/litz.asp lists large guages in their online catalog. -- David dgminala at mediacombb dot net |