Jif wrote:

i have an old pc (member dos days) which is written on it: AC input:
151/230vac 8A/4A DC output , 30A@5v, 12A@12v

is this PS usable as power supply for electroplating for fun and learing.

I wouldn't think so. You need some control over the output. The one I
use can be seen at
http://www.metalworking.com/dropbox/_1999_retired_files/E-CLEAN.TXT
http://www.metalworking.com/dropbox/_1999_retired_files/E-CLEAN2.TXT

I managed to find all the parts surplus.

Ted