[hpsdr] Power Supply

[Dave G4FRE]

i have been using the wider input range version of the psu-120, the
Pico-PSU-120WI-25V
http://www.mini-box.com/PicoPSU-120-WI-25-12-25V-DC-DC-ATX-power-supply?sc=8
&category=981 which tolerates 12-25V input for a few years now with no
issues. One powers my atom board when mobile the other powers my hpsdr when
mobile

Dave

ww2r


-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org
[mailto:hpsdr-bounces at lists.openhpsdr.org]On Behalf Of george byrkit
Sent: Saturday, August 20, 2011 11:32 AM
To: hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] Power Supply


***** High Performance Software Defined Radio Discussion List *****

Gang,
Dan W0IQ has posted a good suggestion.  HOWEVER!  Be aware that these
supplies will enter 'over-voltage shutdown' when presented with 13 to 13.5
volts.  So it would be a very good idea, when running from a switcher or
whatever that's a normal ham 13.8 volts (or a fully charged battery) to have
2 or 3 silicon diodes of 10A capacity or better in series with the power
lead to drop 2 or 3 times .65v to get the supply voltage to within range of
what the Pico-PSU-120 can handle.  OR if using the PW-200-M from
mini-box.com, which has also been suggested previously.  I got some large
silicon diodes at Dayton just for doing this.

73,
George K9TRV

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