[Elecraft] Power Supply

[Joe Subich, W4TV]

The issues in putting a linear supply in the P3 case are both the
size of a transformer capable of handling 25A continuous/30A peak
(or the cost of a special toroidal transformer) and the necessary
heat sink area for the pass transistors.

Switching supplies also have issues with heat sink area or fans to
move air over a smaller heat sink.

A switching supply with a small continuous power rating and a large
capacitor would not be appealing just because it came in a case that
looked like the K3/P3/KPA500.

73,

    ... Joe, W4TV


On 8/8/2010 12:48 PM, Doug Faunt N6TQS +1-510-655-8604 wrote:
> I have heard a rumour of a commonly available power supply that was
> installed in the back of a P3.  Can anyone conform or deny this?
> And, if confirmed, publish photos?
>
> I suspect it wouldn't be hard to put a QRP-level PS/charge controller
> in the KPA3 space, either.
>
> 73, doug
>
>     Date: Sun, 8 Aug 2010 11:24:15 -0500
>     From: Nicholas Farrar<nfarrar at bfpacs.com>
>
>     Would anyone be interested in an Elecraft DC power supply? It would look
>     nice to have a powersupply that matches my K3! Maybe in two models. First a
>     QRP model super clean DC, the other a 25-30 amp model. Anderson Powerpoles
>     on the BACK so you dont have wires bent around the back of the powersupply.
>     I would like to see an option for a battery charge controller and terminals
>     for an external battery.
>
>     Would any one be interested either model? Any thoughts? Looking for Hams
>     with an opinion.
>
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