I know there must be many places to buy power supplies. I remember seeing several pages of them in the Jameco catalog. Here are some links to Marlin P. Jones Assoc that has bargains: http://www.mpja.com/ http://www.mpja.com/listitems.asp?dept=38&main=1&type=1 http://www.mpja.com/listitems.asp?dept=238&main=1&type=2 de Ken