Correct PSU Rating For Nintendo Systems? (Super Famicom)

I have a Super Famicom, NTSC SNES and NTSC NES (Toaster), i am currently using this PSU which is a Official UK PAL SNES (could be NES) on all 3 consoles.....




But it recently come to my attention that the Super Famicom should use a DC PSU not AC, if this is so then why has my Super Famicom been fine for over a year now??

Would this be suitable for a Super Famicom........

http://www.ebay.co.uk/itm/Replaceme...K_iPad_Tablet_Accessories&hash=item2339f97ee9

 

If you have a UK Megadrive 1 power supply then that will work fine. It is DC 10v and 1.2A.