Bitter Magnetics

[andy73]

Hi all, im new here so first "hello all"

 

I have a few questions to the smarter members here about Bitter magnetics, i am working on a project based on solenodes, well air core one really, anyway i have gone through the normal copper coils of different sizes number of turns ect and have goten so really effetive results.

 

now i need to make a much more powerfull magnet and i was wondering if a Bitter magnet (air core) would be the way forward. like i said i have made and used coil magnets with upto 10Kv running through them, i can up the power if need be, but it must be a small unit with dimentions like these:

 

id: 7mm, od: uptp 50mm L: upto 60mm

 

I know its small but would a bitter magnet be the right idea? i only need to pulse the magnet so if this is a no goer then dose anyone have an idea and construction details for a pulse magnet, except i dont want to use an explosive pulse magnet...???

 

anyway if any one has any ideas or info on Bitter magnets and or non explosive pulse magnets that would be fantastic.

 

as regards to the cooling effects required this is not an issue as it is intended to be used in a sub-zero enviroment.

 

cheers:doh:

[YT2095]

good luck trying to make one That small and getting it to work!

 

and shouldn`t it be Plates in a spiral rather than a Coil?

or am I thinking of something else????

[andy73]

hi,

 

yes it is made up of plates, not a coil, i was just wondering if it possiible!!

 

if i get one to work ill let you all know

 

cheers

[CPL.Luke]

I would imagine that a iron core would be beneficial but I don't know the application.

 

also you should know that the strength of a solenoid is dependant on the current not the voltage right?

[kevinalm]

If it is intended to be pulsed (by capacitive discharge perhaps?) then you would definately _not_ want to use any iron or ferromagnetic core. You need to minimize self inductance so as to maximize peak current. Fewer turns of heavier guage is the usual method.

[John Cuthber]

Just in case anyone isn't familliar with the term

http://en.wikipedia.org/wiki/Bitter_solenoid

 

Anyway, if you are using kilovolts to power magnets then I hope they are pulsed. That makes some of the problems more difficult (like building the power suuply and insulating the coil) but it means that the physical strength of the thing can be lower.

What is the application?

[alan2here]

wow, and I thought my 1.4T magnets are strong. lol at 60T, does require power though and lots of it. Is it not obvious, he wants to levitate stuff like water droplets and kittens and eventually himself.

 

ahh, his silence speaks volumes :¬)