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<DIV><SPAN class=675403314-04022005><FONT face=Arial color=#0000ff size=2>Hey
Bob,</FONT></SPAN></DIV>
<DIV><SPAN class=675403314-04022005><FONT face=Arial color=#0000ff size=2>It's a
matter of solderability, Bob. Either you screw an aluminum heatsink to the tab
with the hole, or you solder a fin directly to the tab. Some of the surface
mount regulators take a solder-on heatsink because they don't even
have a screw hole. </FONT></SPAN></DIV>
<DIV><SPAN class=675403314-04022005><FONT face=Arial color=#0000ff
size=2>later,</FONT></SPAN></DIV>
<P><FONT face="Times New Roman">Dean Pappas</FONT> <BR><FONT
face="Times New Roman">Sr. Design Engineer</FONT> <BR><FONT
face="Times New Roman">Kodeos Communications</FONT> <BR><FONT
face="Times New Roman">111 Corporate Blvd.</FONT> <BR><FONT
face="Times New Roman">South Plainfield, N.J. 07080</FONT> <BR><FONT
face="Times New Roman">(908) 222-7817 phone</FONT> <BR><FONT
face="Times New Roman">(908) 222-2392 fax</FONT> <BR><FONT
face="Times New Roman">d.pappas@kodeos.com</FONT> </P>
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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> discussion-request@nsrca.org
[mailto:discussion-request@nsrca.org]<B>On Behalf Of </B>Bob
Richards<BR><B>Sent:</B> Thursday, February 03, 2005 10:03 PM<BR><B>To:</B>
discussion@nsrca.org<BR><B>Subject:</B> RE: any merit in running dual battery
packs ?<BR><BR></FONT></DIV>
<DIV>Dean,</DIV>
<DIV> </DIV>
<DIV>If adding a heat sink, I would think aluminum would be better. In my
experience it always dissipates heat better than copper or steel. Don't know
about tin or brass, but aluminum should be lighter anyway.</DIV>
<DIV> </DIV>
<DIV>Bob R.<BR><BR><B><I>Dean Pappas <d.pappas@kodeos.com></I></B>
wrote:</DIV>
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<DIV><SPAN class=464542521-03022005><FONT face=Arial color=#0000ff
size=2>Hello Urs,</FONT></SPAN></DIV>
<DIV><SPAN class=464542521-03022005><FONT face=Arial color=#0000ff
size=2>The Jaccio regulator is a great item, but I am concerned about
running with more than 3 volts of headroom: this increases the power
dissipation.</FONT></SPAN></DIV>
<DIV><SPAN class=464542521-03022005><FONT face=Arial color=#0000ff size=2>It
may simply require a heat sink be added to the regulator component. That is
usually just a tin or brass fin soldered to the big tab on the
IC.</FONT></SPAN></DIV>
<DIV><SPAN class=464542521-03022005><FONT face=Arial color=#0000ff
size=2>Jim? Whadda you think?</FONT></SPAN></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><SPAN class=464542521-03022005><FONT face=Arial color=#0000ff
size=2>Regards,</FONT></SPAN></DIV>
<P><FONT face="Times New Roman">Dean Pappas</FONT> <BR><FONT
face="Times New Roman">Sr. Design Engineer</FONT> <BR><FONT
face="Times New Roman">Kodeos Communications</FONT> <BR><FONT
face="Times New Roman">111 Corporate Blvd.</FONT> <BR><FONT
face="Times New Roman">South Plainfield, N.J. 07080</FONT> <BR><FONT
face="Times New Roman">(908) 222-7817 phone</FONT> <BR><FONT
face="Times New Roman">(908) 222-2392 fax</FONT> <BR><FONT
face="Times New Roman">d.pappas@kodeos.com</FONT>
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