Tom Sefranek wrote:

> Are you looking for a switching or linear regulator?
>
> A classic Linear regulator is the multi 2N3055 pass transistors feed
> by a single 3055 driven by a 723.
> Most ARRL handbooks have the design including the transformer and
> rectifier/filter section.
> There are better transistors and FETs that can be substituted.
> You will need a MASSIVE heat sink, or forced cooled sink.
> I have designed and built linear supplies with transistor and FET
> bricks for 100 amp+ performance.
>
> Tom
>
I have a massive copper heatsink that came from a Sorensen linear power
supply.
It has room for 6 TO-3 devices [has 5 2n3055s on it right now], air cooled.

If anyone wants it, I'd let it go for $15. It's 5+ pounds of copper. I'd
give it away but I bought the non-working Sorensen supply on eBay for $60.

I also have the transformer from the supply. It's really a monster.

-- 
Martin Klingensmith
http://wwia.org/
http://nnytech.net/

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