[hpsdr] LPU building tip
Alfred Green
nu8i at cox.net
Wed Sep 30 10:01:01 PDT 2009
David M. Witten II wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> For anyone who is yet planning to build an LPU board for their HPSDR
> setup, I have a little trick the saved me some time.
>
> The LPU is straightforward to build, a small linear power supply board
> that plugs into Atlas via a standard ATX power supply connector. The
> only thing about building the board that I found at all daunting was
> the need to cut and crimp all the small pieces of wire needed to
> connect the ATX connector to the board.
>
> For once, a simpler solution presented itself to me *before* I started
> crimping & soldering. It happened that I had an old ATX power supply
> sitting on my desk waiting to be disposed of. I realized that it had
> the connector and the wires already assembled for me. All that was
> needed was to cut off the connector, leaving the wires at a suitable
> length. I just stripped them and soldered them to the LPU. It saved
> me a good bit of time.
>
The same idea occurred to me:
http://nu8i.net/Page2/Projects/LPU_1.jpg
It has the added advantage of more flexibility in mounting the LPU. I
added a hole between the heatsinks, so have a stable 3-point mount. I
really didn't like the idea of having it dangling by the power
connector, particularly as I take it portable.
You could probably simplify it more, as not all the wires are needed.
GL & 73, Alf NU8I
Scottsdale AZ DM43an
1254330061.0
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