Hi guys,
I'm going to jump in here, since I am in the same boat - trying to come up with an "economical" constant-current power source.
I too have looked at the "Forman Paper" in the online manual, and I think I am going to use this a basis for my supply. My education in electronics is a little more than basic, but not nearly as high as Fibergeek and others. Any help here will be greatly appreciated, and my results will be duly reported here
I found a transformer from Stancor, part number RT-206. It is listed as a "Rectifier Transformer", and has several primary taps, and a single secondary with a center tap.
MPJA has the transformer, listed here:
http://www.mpja.com/directview.asp?product=14466+TR
The spec-sheet is here (PDF):
http://www.mpja.com/download/14466tr.pdf
It looks like this unit will supply around 29 volts at 6 amps when used in Full Wave Bridge mode. Am I looking at this correctly?
Stancor lists several other models with much more power in the PDF sheet, but MPJA does not list them.
Fibergeek, I will also need some help with the power MOSFETs. I know what they are, but I have never used them. How are they used in this application? I am just about ready to purchase some parts.
Thanks!