[Elecraft] Looking for miniature 14-V power supply for travel, use

[Chip Stratton]

Looks like the LS25-15 model might be what Wayne (and I) would like, since
it is adjustable from 13.5V
 to 15V at 1.7 A, whereas the LS25-12 is adjustable from 10.8V to 13.2V.

These are speced at 120 mV ripple noise. Is that high?

Thanks for posting this Michael.

Chip

On Tue, Jul 5, 2011 at 7:45 PM, N6MQL <n6mql at arrl.net> wrote:

> Wayne,
>
> The following supply meets your requirements almost to the Tee. There
> are 3 to choose from. I have tested and used the second one in
> Professional broadcast & off-line Video production as well as Audio
> recording.  I have not heard noise from them that would cause an issue.
> Furthermore, I have used these with my KX1 and the K3 when having fun on
> vacation. Specs can be found at http://us.tdk-lambda.com
>
> Lambda - LS25-12 (LS35-12) - $16.50 ($18.25) Newark electronics - 3.1" X
> 5.0" X 1.1" (3.9" X 3.2" X 1.4") - 10.8V-13.2V @ 2.1A (3.0A)
>
> Lambda - HWS30-12/A - $54 Newark electronics - 1.24" X 3.23" X 3.74"
> 9.6V - 14.4V @ 2.5A
>
> Now, if you really want to go crazy with this! (and I know some of you
> out there will)
>
> Lambda - PFE300S-12 - $250.00 Newark electronics  - 2.4" X 0.5" X 4.6"
> 9.6V - 14.4V @ 25A (YES 25A !)
>
> Have fun, and enjoy your holidays
>
> Michael
> N6MQL
>
>
> > Message: 9
> > Date: Mon, 4 Jul 2011 14:23:14 -0700
> > From: Wayne Burdick<n6kr at elecraft.com>
> > Subject: [Elecraft] Looking for miniature 14-V power supply for travel
> >       use
> > To: Elecraft Reflector<elecraft at mailman.qth.net>
> > Message-ID:<90FA3334-F5D5-41D6-93F6-0BACD2C4A49C at elecraft.com>
> > Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
> >
> > I'm going to take a KX3 with me on vacation this summer, and I like to
> > travel light. I'll have internal batteries for field operation, but
> > for indoor use, I'm hoping to find a miniature power supply that meets
> > these criteria:
> >
> > - very small (say 4 x 3 x 1 inches)
> > - light weight (less than 1 lb)
> > - 2 A min. peak output current
> > - 13 to 14 VDC output voltage
> > - input AC voltage range of 100-130 V
> > - low noise
> >
> > I'm sure it will have to be a switching supply. The question is
> > whether any exist with this form-factor that are also quiet from an RF
> > perspective.
> >
> > Anyone know of such a unit?
> >
> > 73,
> > Wayne
> > N6KR
> >
>
> --
> Michael Aretsky
> N6MQL
>
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