Somewhere between the AC input and DC output must be an
transformer. This is essential to human safety. Radio Shack
often sells paperbacks that explain how this is built. You
need to read these books with schematics, part numbers, and
cautions - such as the needed transformer. Way too much to
explain here. But those books make quick reading.

Power supplies in kit form are so simple. But first you
need to read - to learn about the simple mistakes that can
kill.

wrote:
I can get a rectofier at radio shack for 5 bucks. I can build the
enclosure out of steel and weld it togther myself.

I need soemone to explain how the circuitry works for a newbie like me.
For instances, what does a transformer do? I mean why couldnt you just
wire directly into the rectofier?

Could I use a household dimmer switch to adjust the amperage?

Could I just use one of those jump start things with a battery inside
them and leave it plugged up? Then it would even work with the power
going out, right?