I found this on eBay, it looks to be what I need and not too expensive either. The only thing that it needs is 220v...
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=400008509005
Its for an electrolysis experiment and duration of time depends on amperage. I think a max of 10 volts needs to be established, if it is over 10 volts, other materials with a higher reduction potential could come out.
http://www.cdupload.com/files/50887_syub2/curve.PNG
Anything under 50...
I am in need of a high current low voltage DC power supply, around 8 volts and around 250 Amps would be ideal.
A transformer could take a 110v 20a house line and using Pincoming = IPVP = Poutgoing = ISVS and
get (110vx20a)/8v= and get 275a which is good.
But how do I make that DC...