On 6 April 2011 21:07, andy pugh <bodge...@gmail.com> wrote:

> 10,000uF @ 100V is £20
> 10,000uF @ 400V is £135

I picked up 3 x 3300uF from eBay at £20 all-in. Compared to the $186
_each_ from Mouser and the similar RS price I think I got a bargain.
Now they have arrived, I think I see why they cost so much, They are
huge. Bigger than the servo:
https://picasaweb.google.com/lh/photo/Uic01ES5_7svBiSm1Wp8gw?feat=directlink

My initial idea was to put them in a project box, one for each drive.
I am now thinking that it makes more sense to parallel them and use
them as one big source for all drives. That also means only one set of
discharge circuits, soft-starters etc.

The project-box idea is out, that's for sure. These look like they
will be chassis-mounted with copper bus-bars.

I also think I might need to re-wire the workshop, at the moment it is
powered through an RCD (GFI in US parlance?) which I can't see taking
well to a capacitive load of this size.

-- 
atp
"Torque wrenches are for the obedience of fools and the guidance of wise men"

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