[Elecraft] K3/100 power supply

[Jeff Cochrane - VK4BOF]

Hi Shane,
Have a look at these supplies: 
http://www.powerwerx.com/batteries-chargers/powerwerx-30-amp-desktop-switching-power-supply-powerpoles.html

I friend of mine uses a couple of those supplies as have others in the group with good success.
The beauty of them is their small footprint, quiet operation (both audially and electrically) and their price, even landed here in Australia they are hard to beat when compared to other brands that have to be imported.

73 de
Jeff Cochrane - VK4BOF
Innisfail, QLD, Australia
Elecraft K3 #4257 + PR6 + K144XV = Multiband greatness!
  ----- Original Message ----- 
  From: VK5ABQ 
  To: elecraft at mailman.qth.net 
  Sent: Tuesday, April 12, 2011 10:14 PM
  Subject: [Elecraft] K3/100 power supply


  Dear Group,

  I am considering a suitable power supply for the K3/100.

  One manufacturer whose supplies are readily available on our Australian
  market and well documented is XP Power. These supplies are manufactured in
  China but judging by their datasheets, they seem much better quality than
  those from our retail stores. Only other alternatives such as Powerbox are
  twice the price or I could import an Astron switcher (their linear supplies
  are 110VAC only).

  An XP Power model I’m considering is the LCL300PS12, from their LCL series;
  datasheet is shown at http://www.xppower.com/pdfs/LF_LCL.pdf . They sell for
  about $180 ea.

  I have some questions for readers and Elecraft please -

  1. The LCL300PS12 can provide 25A and has an adjustable output range of 11.0
  to 13.0V. Is this suitable for the K3/100? XP Power’s 12.5 to 14.5V model
  isn’t available here.

  2. Pages 8 onwards of the data sheet show spectrum plots of the supply’s
  conducted emissions. I don’t have a feel for dBuV, so are the levels shown a
  concern? I can’t see any plots for radiated emissions.

  3. Has anyone used these supplies and been happy with their emissions and
  level of audiable noise?

  4. Should I consider something else? Found this which looks expensive:
  http://www.barrettcommunications.com.au/2022.html Also have noticed a lack
  of mention in Elecraft’s forum of TenTec’s model 941.

  Thanks,
  Shane
  VK5ABQ

  -----
  Shane
  K3/10: S/N 2127, KBPF3, KFL3B-FM, KFL3A-6K, KFL3A-2.8K, KFL3A-400, KTCXO3-1 & KXV3.
  --
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