Need Help Building DC Power Supply

OK, here's the deal.

I'm running Camtronics 600 oz/in servo motors rated at 36v, Gecko
G320 Servo Drivers, and I need to build a power supply to feed them.

I ran across this
http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/Jerry/Power_Suppl
y.pdf

But it seems too simple.

Is this a clean enough power supply to please the Geckos, or do I
need something else?

Could someone please take a look at it, and see if that exact setup
would work for me. If it won't, could anyone suggest an
alternative? Also, is there any way to bump up the amperage to 20
amps, without building two of them and hooking them up in parallel?

Thanks for your time.