[hpsdr] Power Supply for Multiple Mercury receivers

[Dave G4FRE WW2R]

Rick

I have used the PicoPSU-120-WI-25 pico psu  on my hpsdr for the last 2 years also without a fan without any issues.  The picoPSU-120-WI-25 120W was out of stock when O ordered mine

I replaced the LPU after i burnt my fingers on the heatsink 

It has survived the heat of Texas!

It has also survived a couple of short circuits when integrating the jupiter GPS onto the atlas bus

Dave

ww2r
  
  -----Original Message-----
  From: hpsdr-bounces at lists.openhpsdr.org [mailto:hpsdr-bounces at lists.openhpsdr.org]On Behalf Of Rick ve3mm
  Sent: Sunday, November 06, 2011 8:31 AM
  To: Jeff Kelly
  Cc: hpsdr at lists.openhpsdr.org
  Subject: Re: [hpsdr] Power Supply for Multiple Mercury receivers


  Hi Jeff


  I went through this a few weeks ago and several list members suggested the picoPSU-120-WI-25 120W wide input (12-25V) power supply. �I picked up a couple of them from ITXCanada.com. �They are also available from a couple of distributers in the US.


  They are a great power supply for my HPSDR needs. �I am not using a fan any longer in my Pandora setup (with Pennywhistle) with this power supply. �Nice to have a complete quiet in the shack. �This may not work for you if your shack is not on the cool side like mine is here in Canada.


  The picoPSU units are switcher based designs that plug right in to the 20 pin socket on Atlas. I haven't found any birdies that cause me any concern. �I cut off the incoming power connector and added a power pole connector assembly to provide power to the picoPSU and Pennywhistle.


  I had tried adding a pass transistor to the LPU to increase the 5 volt output, but found I was dealing with a lot of heat dissipation issues that were not easy to deal with, so I abandoned that effort.


  73


  Rick ve3mm

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