I am wanting to build a 24 volt power supply. The power supply needs to be at
least 25 amp.

Hi Craig, I am sure you know you are trying to build a 625 watt power supply.
As such, a Linear Power Supply will be large, heavy, not to mention expensive.
Unless you have a lot of high volt-amp transformers, 100,000 mfd. Caps as well
as big pass transistors with heat sinks in your junk box, this will be
expensive. If you do have all this stuff, then use any Linear power supply
schematic.
A possibly better soulition would be a Switching Power Supply. These are not
easily built because of the difficulity in obtaining the components. Try
taking a look at Lambda Power Supplies, and look at Ebay selling Lambda stuff
at a good price.


73 Gary N4AST