Half a croissant, on a plate, with a sign in front of it saying '50c'
h a l f b a k e r y
Crust or bust.

idea: add, search, annotate, link, view, overview, recent, by name, random

meta: news, help, about, links, report a problem

account: browse anonymously, or get an account and write.



monopole like power transformers

ironless transformers from currently produced magnetic monopole
  (+1, -8)(+1, -8)
(+1, -8)
  [vote for,

whatever we might think of its capability I like the idea of the airbook

itd be wonderful if the power transformer that went with the airbook was as light

I've recently been thinking about a halbach monopole; a "fridge magnet that only works on one side" note [link]

the government is applying this idea to the creation of ironless electric airplane motors [link]

I think a power transformer with an electromagnetic winding that reproduced a magnetic monopole form would be ironless as well as producing pulsed dc; pulsed dc with capacitor circuit of course is dc

if this works all those weighty power transformers might be minimally sized

actually I think another big monopole like thrill would be light speakers; bose or those audio roadies would appreciate light purely electronic speakers

I'm already thinking up ultramicro versions

beanangel, Mar 11 2008

monopole "fridge magnet that only works on one side" http://www.wondermagnet.com/halbach.html
[beanangel, Mar 11 2008]

eliminate the need for an iron core http://www.grc.nasa.../RS08S-kascak2.html
At the NASA Glenn Research Center, our approach is first to improve the heat removal from the stator, by using forced-convection heat transfer, and second to improve the magnetic flux circuit with a Halbach Array. This will eliminate the need for an iron core [beanangel, Mar 11 2008]

(??) vector illustration quantity creates ab...identity) monopole
[beanangel, Mar 11 2008]

Gratuitous cross-link regarding small domains A_20staple_20form_20of_20memory
[normzone, Mar 11 2008]


       Do modern power supplies still use transformers? All the ones I've seen are switched-mode.
MaxwellBuchanan, Mar 11 2008

       actually I think another big monopole thrill would be light speakers; bose or those audio roadies would appreciate light purely electronic speakers   

       with an electromagnetic wiring path that mimics the monopole effect the speakers are lighter than those honking big ceramic magnet versions
beanangel, Mar 11 2008

       You know that's not really a monopole, right?
ldischler, Mar 11 2008

       [Treon] Setting aside the definition of "monopole", I don't see how the Halbach array to which you refer is going to help in making lighter transformers or speakers.   

       Do you?
MaxwellBuchanan, Mar 11 2008

       I suspect you will find that transformers are still used because they are very durable and very cheap, many transformer based supplies can be switched as well and again are very durable and inexpensive.   

       The greater the cost the smaller the supply can be, my Targus multi use power supply is 1/4 inch thick, 1.5 inches wide and about 3 inches long and weighs almost nothing, with no transformer in sight.
jhomrighaus, Mar 11 2008

       actually regarding the word monopole its fun to think on this: the "fridge magnet that works only on one side" geometry could be translated to an array of the littlest possible magnetic domains, which is a few atoms; attached to a physical form like a hard disk surface those domains would have a detectable field of just one polarity as the "grain size" to even support the diffusive aspect would be absent   

       absent that minimal grain size to be magnetic this would be a monopole; a kind of quantumish (that is a quantity creates absolute identity) monopole   

       if nanopole nanoparticles are created you could coat a hard disk with them perhaps creating higher storage density as the read write head could be less precise
beanangel, Mar 11 2008

       //absent that minimal grain size to be magnetic this would be a monopole//
Actually, it would be nonmagnetic, a zeropole.
ldischler, Mar 11 2008

       i meant the grains around the monopole form; view the vector picture at [link] that has me thinking quantity creates absolute identity monopole   

       theres is likely research on how shape affects magnetic domains at minimal atom amount; it might be possible to make some kind of magnet that switches polarity when you touch it
beanangel, Mar 11 2008

       This all reminds me of my patent attouney's idea for a wobbling space drive. A bunch of weighted wheels that if enough of them were arranged correctly, could defy Newton's laws and create a propulsive force. Halback arrays are neet but not groundbreaking. They just allow the magnetic lines on one side to go thru the magnets themselves, like a line of horseshoe magnets . There is no magnetic monopole no matter how you slice them, and I don't know what this has to do with transformers, which you can build without iron anyway.
MisterQED, Mar 12 2008

       Modern power supplies do, indeed, use transformers, but not as primary voltage-conversion devices. Switch-mode (or 'chopper') PSUs are pretty much universal these days because they're smaller, lighter, easier to design, and can be used with a wide range of input voltage and frequency.
angel, Mar 12 2008

       Transformers don't use magnets. They are somewhat like electromagnets, but making them one-sided isn't going to help anything, and would take even more iron.   

       A Halbach Array isn't a monopole. "Monopoles" may exist, but they have nothing to do with this idea.   

       A motor isn't a transformer. The technology doesn't relate.   

       This is just stupid. [-]
baconbrain, Mar 12 2008

       //Transformers don't use magnets.//   

       Megatron does.
skinflaps, Mar 12 2008

       I thought he was the voice of God.   

       Oh, wait, that's Metatron.   

baconbrain, Mar 12 2008

       Apology accepted.
8th of 7, Mar 12 2008

       I freakin' love monopoles, dude.   

Giblet, Mar 13 2008

       I'm freakin' confused by giblets, dude...?
david_scothern, Mar 15 2008

       Giblets are the smaller internal parts of a bird. The larger internal part of the bird is known as the gib.
MaxwellBuchanan, Mar 15 2008


back: main index

business  computer  culture  fashion  food  halfbakery  home  other  product  public  science  sport  vehicle