[sudoroom] Adjustable DC magnets

[Steve Berl]

Computer power supplies are cheap and can put out a lot of current. Might
be a good starting point.

Steve

On Thursday, July 19, 2012, Patrik D'haeseleer wrote:

> 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<javascript:_e({}, 'cvml', '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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>

-- 
-steve
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