[0-30V Stabilized Power Supply]

The voltage from your transformer is much too high and will blow up most parts. It is 50VAC which makes 68.7VDC. If you use it as a 25V transformer then its voltage is too low but it could allow the project to have a max output of about 26VDC at 3.5A.
The minimum transformer voltage for the latest version of this project is 28V and the maximum voltage is 30V.
The current from the transformer will be 4.2A when the project has a 3ADC load and the transformer's current will be 7.1A when the project's output is 5ADC.

I really don't need a 30V output, 26VDC is more than enough. So I can make 2 independent power supplies of 26VDC at 3.5A with my transformer??? There is a way to make it synchronous?

[0-30V Stabilized Power Supply]

First of all sorry for my english... I'm from Brazil and here power supplyes are too expensive for my pocket :)

I found in page 55 the new schematic and I want to build one for me. I have here a 25-0-25 5A transformer, so I belive it can get a DC voltage of about 50V

I think it can't handle the 0-30V 5A modification (or can??), but is it OK to make de 3A version?? Do I need to make any modification to use my transformer to this application?

Thank's