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<DIV><FONT face=Arial size=2>Hi Gordon,</FONT></DIV><FONT face=Arial size=2>
<DIV><BR>The prototype Penelope board draws about 300mA from the 5v rail
and 200mA from the 1v rail at full output. Mercury pulls about 500mA from
the 5v rail and 200mA from the 12v rail. These figures are approximate but
should be close enough for you to chose a PSU. Neither of these boards use the
-12v rail.</DIV>
<DIV> </DIV>
<DIV>73's Phil...VK6APH </DIV>
<DIV> </DIV>
<DIV></FONT> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=glduff@bellsouth.net href="mailto:glduff@bellsouth.net">Gordon &
Lois Duff</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=hpsdr@hpsdr.org
href="mailto:hpsdr@hpsdr.org">hpsdr@hpsdr.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, June 06, 2007 8:13
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [hpsdr] Power Supply</DIV>
<DIV><BR></DIV>***** High Performance Software Defined Radio Discussion List
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<P><FONT face=Arial color=#0000ff size=2>I guess I need to clarify my
question. </FONT></P>
<P><FONT face=Arial color=#0000ff size=2>Pico makes four supplies that seem to
be candidates, maybe. According to their manuals, the -12v ratings
are:</FONT> <BR><FONT face=Arial color=#0000ff
size=2>PicoPSU-120
50ma</FONT> <BR><FONT face=Arial color=#0000ff size=2>PicoPSU-120-WI-32
100ma</FONT> <BR><FONT face=Arial color=#0000ff size=2>PicoPSU-120-WI-25
100ma</FONT> <BR><FONT face=Arial color=#0000ff
size=2>PicoPSU-80
50ma</FONT> </P>
<P><FONT face=Arial color=#0000ff size=2>At the TAPR booth in Dayton I saw
what looked like a Pico supply driving Janus and Ozy, so it appears that one
of the supplies is appropriate for TWO boards. My question is while the
Pico supplies be adequate as Mercury and others are added (excluding a
PA). I notice that Mercury does not need -12v, but does it fit within
the ratings for the other voltages?</FONT></P>
<P><FONT face=Arial color=#0000ff size=2>Gordon. </FONT></P>
<P><FONT face=Tahoma size=1>______________________________________________
</FONT><BR><B><FONT face=Tahoma size=1>From: </FONT></B> <FONT
face=Tahoma size=1>Gordon & Lois Duff [HYPERLINK HYPERLINK
mailto:glduff@bellsouth.net<U> </U></FONT><U><FONT face=Tahoma color=#0000ff
size=1><A
href="mailto:glduff@bellsouth.net">mailto:glduff@bellsouth.net</A></FONT></U><FONT
face=Tahoma size=1> HYPERLINK mailto:glduff@bellsouth.net<U>
</U></FONT><U><FONT face=Tahoma color=#0000ff size=1><A
href="mailto:glduff@bellsouth.net">mailto:glduff@bellsouth.net</A></FONT></U><FONT
face=Tahoma size=1>] </FONT></P>
<P><B><FONT face=Tahoma size=1>Sent: </FONT></B> <FONT face=Tahoma
size=1>Tuesday, June 05, 2007 5:36 PM</FONT> <BR><B><FONT face=Tahoma
size=1>To:
Subject: </FONT></B> <FONT
face=Tahoma size=1>Power Supply</FONT> </P>
<P><FONT face=Arial size=2>I have seen the Pico PSU power supply plugged into
the Atlas board with Janus and Ozy. This supply seems to be running
close to its limits for theses two boards for the -12v requirement - I saw
someplace that Janus & Ozy need about 70ma at -12v and the Pico is rated
at 100ma. If other boards are going to require -12v as well, then the
Pico is not a good choice. Can anyone help me out here?</FONT></P>
<P><FONT face=Arial size=2>Gordon, KA2NLM</FONT> <BR></P><BR>
<P><FONT face=Arial size=2>No virus found in this outgoing message.<BR>Checked
by AVG Free Edition.<BR>Version: 7.5.472 / Virus Database: 269.8.9/834 -
Release Date: 6/5/2007 2:38 PM<BR></FONT> </P>
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