[sudoroom] Adjustable DC magnets

[Patrik D'haeseleer]

We really don't know how much power we'll need for this. Seems like most of
the youtube videos probably used a handheld magnet or a small
electromagnet, and zoomed in on the ferrofluid. If we use a significantly
larger volume of ferrofluid we may need to go to an industrial sized
magnet, but we really don't know at this point.

Let's just start small (and cheap) and see where that gets us...

Patrik

On Thu, Jul 19, 2012 at 4:44 PM, Steve Berl <steveberl at gmail.com> wrote:

> How much power do you need?
>
> Steve
>
>
> On Thursday, July 19, 2012, Anthony Di Franco wrote:
>
>> Try to find someone with an arc welding rig, that is about what you want,
>> in commonly available form.
>> Rectifying the power coming out of the wall should be doable as well and
>> fairly cheaply. Keeping some of the noise from the wall might make cool
>> vibrating visuals in the ferrofluid context despite that it'd be a drawback
>> usually.
>> A short cockroft walton ladder is another somewhat crazier idea, maybe
>> useful if it can be made to produce enough current; the voltage desired is
>> fairly low for these so you'd probably need few stages and perhaps cheaper
>> components would suffice than with doing everything in one go:
>> http://blazelabs.com/e-exp15.asp
>> A high power switching DC power supply is another option but likely to be
>> expensive and complex to build at this power level.
>>
>> On Wed, Jul 18, 2012 at 9:07 PM, Tracy Jacobs <kinetical at comcast.net>wrote:
>>
>>> http://www.ohiomagnetics.com/**hddcps.htm<http://www.ohiomagnetics.com/hddcps.htm>
>>>
>>> I think they are using something like this to get these motion effects
>>> with the ferrofluid.  Probably expensive equipment, but maybe Patrick knows
>>> how to DIY it?
>>>
>>> Tracy
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>>>
>>
>>
>
> --
> -steve
>
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