Dave King wrote:

>
> Just wondering if anyone has run across a working schematic
> for a DC voltage regulator. Input range is 20-48 and required
> output is 12vdc @ 10Amps with a max of say 15-20A.
>
> I'm looking at one schematic that has the required output but
> is too narrow in the input voltage range. So if you know of a good
> one please let me know.
>
> Tia
>
> Dave

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

-- 
  *
  |  __O    Thomas C. Sefranek   WA1RHP@ARRL.net
  |_-\<,_   Amateur Radio Operator: WA1RHP  
  (*)/ (*)  Bicycle mobile on 145.41, 448.625 MHz

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