"Jim, N2VX" wrote in message
...
On 27 Oct 2003 19:02:07 -0800, (clc) wrote:

Start scrounging hamfests, etc. for electrolytic capacitors. You
can't have too much filtering. In this case more is better.

For a regulator use a 7815 IC to drive several 2N3055's. ARRL
handbooks have a good example of 2N3055's in parallel. 5 2N3055's on
a decent heatsink will run nice and cool. Scrounge for heatsinks,
too. They tend to be cheap at hamfests because most people are
appliance operators.

And if you want to make life easier for the rectifiers add a soft
start cicruit using a relay. The handbook has an example of it.

Good luck and 73,
Jim


Here is the article (schematic link at bottom)
http://www.seits.org/features/pwrsup.htm

KBT Info page on linear supplies
http://www.kbt-dc-supplies.com/index.php

and Astron schematics are already on the Internet
http://www.repeater-builder.com/rbtip/astron-index.html

Greg
w9gb