Litz wire
in [Design]
|
From: life imitates life on 21 Feb 2010 14:46 On Sun, 21 Feb 2010 14:25:26 -0500, legg <legg(a)nospam.magma.ca> wrote: >On Sat, 20 Feb 2010 22:18:28 -0800, life imitates life ><pasticcio(a)thebarattheendoftheuniverse.org> wrote: > >>On Sat, 20 Feb 2010 23:55:18 -0500, legg <legg(a)nospam.magma.ca> wrote: >> >>>On Sat, 20 Feb 2010 10:58:17 -0800, life imitates life >>><pasticcio(a)thebarattheendoftheuniverse.org> wrote: >>> >>>>On Sat, 20 Feb 2010 09:12:29 -0500, legg <legg(a)nospam.magma.ca> wrote: >>>> >>>>>Shake it loose and bake it to form an ~oxide layer on the individual >>>>>strands. Doesn't have to be an insulator as such, just a poor >>>>>conductor to adjacent wires. >>>> >>>> Bullshit, ya fuckin' retard. >>> >>>Not so much words on the fly, but flies on the words, it seems. >>> >>>You could also vacuum impregnate the bundle, if it's already formed >>>into position (and if you've got a really good impregnation process >>>cooking). >>> >>>RL >> >> No, you cannot. It only works with insulated strands. Trying to come >>up with an 'insulation on the fly method is just plain stupid. > >buzz buzz buzz. > >RL Yes, and it would likely buzz as well. One of your legs must have fallen off, and this stupidity is your compensation.
From: qrk on 21 Feb 2010 15:50 On Fri, 19 Feb 2010 13:21:36 -0600, "Tim Williams" <tmoranwms(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 What frequency is this for. If you're under 1MHz, you're mainly fighting proximity effect, not skin effect. To deal with proximity effect, all you need is bunched conductors (twisted), not Litz. The Litz wire I have come across use bunched groups twisted into a larger bunched group. This closely approximates Litz. -- Mark
From: Tim Williams on 21 Feb 2010 17:09 Let's say 200kHz-2MHz. Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms "qrk" <SpamTrap(a)spam.net> wrote in message news:ks63o5p96edftvotfmks3983d8dou0gnq4(a)4ax.com... > What frequency is this for. If you're under 1MHz, you're mainly > fighting proximity effect, not skin effect. To deal with proximity > effect, all you need is bunched conductors (twisted), not Litz. The > Litz wire I have come across use bunched groups twisted into a larger > bunched group. This closely approximates Litz. > > -- > Mark
From: amdx on 21 Feb 2010 18:10 "qrk" <SpamTrap(a)spam.net> wrote in message news:ks63o5p96edftvotfmks3983d8dou0gnq4(a)4ax.com... > On Fri, 19 Feb 2010 13:21:36 -0600, "Tim Williams" > <tmoranwms(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 > > What frequency is this for. If you're under 1MHz, you're mainly > fighting proximity effect, not skin effect. Hey qrk, I haven't seen that information before, do you have anything to site that would make me believe it? To quote Dagmargoodboat, [At 290Khz] "Comparing the braid to the equivalent-cross-section solid wire: (view table in Courier font) Winding Rac (calculated) ---------- ------------------ 7 x 0,23mm 1.46*Rdc 1 x 0,608 4.29*Rdc So, the braid was ~ 3x better. Here are a couple of skin effect calculators. http://daycounter.com/Calculators/SkinEffect/Skin-Effect-Calculator.phtml http://circuitcalculator.com/wordpress/2007/06/18/skin-effect-calculator/ >To deal with proximity > effect, all you need is bunched conductors (twisted), not Litz. Ok, you need to explain what you mean by bunched conductors, Are they insulated bunched conductors? As stated before proximity effect is minimized by making every conductor find itself in the same position in the bundle an equal amount of time. Twisting may or may not do that, depends on the amount of conductors twisted. Mike > The Litz wire I have come across use bunched groups twisted into a > larger > bunched group. This closely approximates Litz. Yes, "closely approximates Litz" because it would not be as good regarding proximity effect. It doesn't have every conductor find itself in the same position in the bundle an equal amount of time. Mike
From: life imitates life on 21 Feb 2010 18:49
On Sun, 21 Feb 2010 17:10:03 -0600, "amdx" <amdx(a)knology.net> wrote: >Are they insulated bunched conductors? Of course they would be. Use *SOME* common sense. |