Tesla's "COIL FOR ELECTRO-MAGNETS".

[Farmhand]

Thanks guy's, TEKTRON I think either of the two basic lower temp coatings would suit for my intentions, preference to the 180 degree rated stuff. Much appreciated.

I'll search for other suppliers now I can see it seems common. Just hope the price is do able.

I'm not sure that many compromises can be made on the cores as far as weight goes. As far as wire is concerned then aluminium would have to be the best for lightweight performance.

Thanks again, please forgive my ignorance I should have been able to find that myself.

Cheers

[Farmhand]

Now that annoys me, I just spent almost a half hour filling in a quotation request form and then when I went to press the submit button nothing happened, the request can't be sent.. So now I will have to send a personal Email which probably won't be replied to because I only want 1000 feet of wire. They even want to know a business name and why I want it.

Anyone know where the prices are listed I can just order some and it will come in the post ? I can't find any places that list the price and allow direct orders of listed stock/products.

Cheers

[kooler]

"Still cant find any aluminium magnet wire.   Does anyone know if aluminium magnet wire exists ? I mean thinly insulated stuff so as much wire as possible can go on a certain former."


Mags

the only aluminum magnet wire I have got is the degauss coil out of a crt.. it looks like copper but everyone I have torn down isn't but that may be to big for you..

[Magluvin]

the only aluminum magnet wire I have got is the degauss coil out of a crt.. it looks like copper but everyone I have torn down isn't but that may be to big for you..

Thanks kooler

Im not lookin, but that sounds like an in the pinch source.     

Mags

[fritz]

But my point is, weather right or wrong ( I don't mind which) that the steel or iron wire should act as a core as well as a wire. I mean the comparison with steel/iron to other wires when no specific core is involved (air cored coils). I am probably wrong but wouldn't a coil wound from steel or iron wire act as though it had a core of sorts (inductively speaking) even without a core piece proper. Meaning that say 100 meters of steel wire wound as an air core coil in my imagination would have more inductance than 100 meters of copper wire wound as an air core coil. I don't see why the steel/iron windings would not act as a kind of core to increase the inductance, but not as a core to concentrate flux as a regular core would. The steel wire thing is just a matter of interest I have no use in mind for that, just wondering.

I got your point - but if the windings are almost 90 degrees to your sum flux direction - there wont be an induction phenomenen in the wire - and there should be pretty no contribution to the overall inductivity.
The contribution to overall inductivity would increase if you change the inclination of your windings from 90 degrees towards 45 degrees in  relation to your sum flux / rotational axis.
As long as you don´t exceed flux saturation in your ferro magnetic wire - you will observe increased inductivity - if you saturate the wire, inductivity will fall back to normal - and there will be iron losses in the wire.

rgds.