<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>I know, but they're pretty good - especially the high-frequency ones. Not much heat would be generated and you'd get the effect of having a slightly higher capacity battery as compared to a non-regulated pack with the same capacity and one less cell running at nearly the same output voltage. It would be a neat experiment. </DIV>
<DIV> </DIV>
<DIV>John Pavlick<BR><BR>--- On <B>Mon, 3/1/10, Jay Marshall <I><lightfoot@sc.rr.com></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid"><BR>From: Jay Marshall <lightfoot@sc.rr.com><BR>Subject: RE: [<SPAN>NSRCA</SPAN>-discussion] Max volts<BR>To: jpavlick@idseng.com, "'General pattern discussion'" <nsrca-discussion@lists.nsrca.org><BR>Date: Monday, March 1, 2010, 10:53 AM<BR><BR>
<DIV id=yiv1351849579>
<STYLE>
<!--
#yiv1351849579
_filtered #yiv1351849579 {font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;}
_filtered #yiv1351849579 {font-family:"Brush Script MT";panose-1:3 6 8 2 4 4 6 7 3 4;}
#yiv1351849579
#yiv1351849579 p.MsoNormal, #yiv1351849579 li.MsoNormal, #yiv1351849579 div.MsoNormal
{margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";}
#yiv1351849579 a:link, #yiv1351849579 span.MsoHyperlink
{color:blue;text-decoration:underline;}
#yiv1351849579 a:visited, #yiv1351849579 span.MsoHyperlinkFollowed
{color:blue;text-decoration:underline;}
#yiv1351849579 p
{margin-right:0in;margin-left:0in;font-size:12.0pt;font-family:"Times New Roman";}
#yiv1351849579 span.EmailStyle17
{font-family:Arial;color:navy;}
_filtered #yiv1351849579 {margin:.2in .25in 33.1pt .25in;}
#yiv1351849579 div.Section1
{}
-->
</STYLE>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Not even a switcher is 100% efficient!</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<DIV>
<DIV><B><I><FONT face="Brush Script MT" color=navy size=4><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 13.5pt; COLOR: navy; FONT-STYLE: italic; FONT-FAMILY: 'Brush Script MT'">Jay Marshall</SPAN></FONT></I></B><FONT color=navy><SPAN style="COLOR: navy"> </SPAN></FONT></DIV></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>John Pavlick<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Monday, </SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">March 01, 2010</SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> </SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">10:51 AM</SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> </SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">General
pattern discussion</SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"><BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] Max volts</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></DIV>
<TABLE class=MsoNormalTable style="MARGIN-LEFT: 0.5in" cellSpacing=0 cellPadding=0 border=0>
<TBODY>
<TR>
<TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" vAlign=top>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">Not if it was a switching regulator. </SPAN></FONT></DIV></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></DIV></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">John Pavlick<BR><BR>--- On <B><SPAN style="FONT-WEIGHT: bold">Mon, 3/1/10, Jay Marshall <I><SPAN style="FONT-STYLE: italic"><lightfoot@sc.rr.com></SPAN></I></SPAN></B> wrote:</SPAN></FONT></DIV></DIV>
<BLOCKQUOTE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; MARGIN-TOP: 5pt; PADDING-LEFT: 3pt; MARGIN-BOTTOM: 5pt; PADDING-BOTTOM: 0in; MARGIN-LEFT: 3pt; BORDER-LEFT: #1010ff 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none">
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"><BR>From: Jay Marshall <lightfoot@sc.rr.com><BR>Subject: Re: [NSRCA-discussion] Max volts<BR>To: "'General pattern discussion'" <nsrca-discussion@lists.nsrca.org><BR>Date: Monday, March 1, 2010, 10:33 AM</SPAN></FONT></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">The motor current x voltage drop in the regulator = wasted heat<BR><BR>Jay Marshall<BR><BR>-----Original Message-----<BR>From: <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=nsrca-discussion-bounces@lists.nsrca.org" target=_blank rel=nofollow>nsrca-discussion-bounces@lists.nsrca.org</A><BR>[mailto:<A href="http://us.mc805.mail.yahoo.com/mc/compose?to=nsrca-discussion-bounces@lists.nsrca.org" target=_blank rel=nofollow>nsrca-discussion-bounces@lists.nsrca.org</A>] On Behalf Of Ron Van Putte<BR>Sent: Monday, March 01, 2010 10:30 AM<BR>To: General pattern discussion<BR>Subject: Re: [NSRCA-discussion] Max volts<BR><BR>Never thought of that, but wouldn't the energy to regulate down the <BR>42.56 volts just be dumped as heat?<BR><BR>Ron<BR><BR>On Mar 1, 2010, at 8:54 AM, krishlan fitzsimmons wrote:<BR><BR>> Couldn't we go to a higher voltage and regulate it
back down? A <BR>> contstant 42.56v would be nice!<BR>><BR>> Chris<BR>><BR>><BR>><BR>><BR>><BR>> From: Chad Northeast <<A href="http://us.mc805.mail.yahoo.com/mc/compose?to=chad@f3acanada.org" target=_blank rel=nofollow>chad@f3acanada.org</A>><BR>> To: <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=nsrca-discussion@lists.nsrca.org" target=_blank rel=nofollow>nsrca-discussion@lists.nsrca.org</A><BR>> Sent: Sun, February 28, 2010 8:48:48 PM<BR>> Subject: Re: [NSRCA-discussion] Max volts<BR>><BR>> You would be at about 50% capacity at 3.85 ish volts/cell (resting <BR>> open circuit), so unless you up the capacity you will have a pretty <BR>> restricted flight time.<BR>><BR>> Chad<BR>><BR>> On 10-02-28 9:25 PM, Ron Van Putte wrote:<BR>> > That stirs a wild thought in my brain. Fully charged packs don't <BR>> stay at 4.2 volts per cell very
long. On the other hand, once the <BR>> initial charge voltage is burned off by a constant load, the <BR>> voltage loss curve "flattens out". What if you put fully charged <BR>> 6S and a 5S packs in series and "burn them down" to 3.869 volts per <BR>> cell (a total of 42.56 volts for an 11-cell pack) so they were <BR>> legal for use. Would the voltage of this depleted 11S pack be <BR>> higher than a fully charged 10S pack at the end of a typical <BR>> flight? If the end-of-flight voltage might be significantly higher <BR>> for the 11S pack vice a 10S pack, it would be worth investigating, <BR>> even considering the extra weight of the additional cell. Come on <BR>> you electronic gurus, show me where I'm wrong.<BR>> ><BR>> > Ron Van Putte<BR>> ><BR>> > On Feb 28, 2010, at 10:00 PM, James Oddino wrote:<BR>>
><BR>> >> What comes after ...? Does it specify a load or any other <BR>> conditions? Is it measured during the noise test and have a <BR>> minimum value?<BR>> >><BR>> >> Just stirring the pot, Jim O<BR>> >><BR>> >><BR>> >> On Feb 28, 2010, at 5:21 PM, John Fuqua wrote:<BR>> >><BR>> >>> No its not (assuming we are talking RC Aerobatics). Try page <BR>> RCA-2 para 4.1<BR>> >>> which states "Electrically-powered model aircraft are limited <BR>> to a maximum<BR>> >>> of 42.56 volts.."<BR>> >>><BR>> >>> -----Original Message-----<BR>> >>> From: <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=nsrca-discussion-bounces@lists.nsrca.org" target=_blank rel=nofollow>nsrca-discussion-bounces@lists.nsrca.org</A><BR>> >>> [mailto:<A
href="http://us.mc805.mail.yahoo.com/mc/compose?to=nsrca-discussion-bounces@lists.nsrca.org" target=_blank rel=nofollow>nsrca-discussion-bounces@lists.nsrca.org</A>] On Behalf Of <BR>> Ron Van Putte<BR>> >>> Sent: Sunday, February 28, 2010 7:07 PM<BR>> >>> To: General pattern discussion<BR>> >>> Subject: Re: [NSRCA-discussion] Max volts<BR>> >>><BR>> >>> It's in the general rules, not in the R/C section.<BR>> >>><BR>> >>><BR>> >>> On Feb 28, 2010, at 6:50 PM, Jim Quinn wrote:<BR>> >>><BR>> >>>> Where can I find the rule for max volts?<BR>> >>>><BR>> >>>> _______________________________________________<BR>> >>>> NSRCA-discussion mailing list<BR>> >>>> <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" target=_blank
rel=nofollow>NSRCA-discussion@lists.nsrca.org</A><BR>> >>>> <A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank rel=nofollow>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A><BR>> >>><BR>> >>> _______________________________________________<BR>> >>> NSRCA-discussion mailing list<BR>> >>> <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" target=_blank rel=nofollow>NSRCA-discussion@lists.nsrca.org</A><BR>> >>> <A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank rel=nofollow>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A><BR>> >>><BR>> >>> _______________________________________________<BR>> >>> NSRCA-discussion mailing list<BR>> >>> <A
href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" target=_blank rel=nofollow>NSRCA-discussion@lists.nsrca.org</A><BR>> >>> <A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank rel=nofollow>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A><BR>> >><BR>> >> _______________________________________________<BR>> >> NSRCA-discussion mailing list<BR>> >> <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" target=_blank rel=nofollow>NSRCA-discussion@lists.nsrca.org</A><BR>> >> <A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank rel=nofollow>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A><BR>> ><BR>> > _______________________________________________<BR>> > NSRCA-discussion mailing list<BR>> > <A
href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" target=_blank rel=nofollow>NSRCA-discussion@lists.nsrca.org</A><BR>> > <A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank rel=nofollow>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A><BR>> ><BR>> _______________________________________________<BR>> NSRCA-discussion mailing list<BR>> <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" target=_blank rel=nofollow>NSRCA-discussion@lists.nsrca.org</A><BR>> <A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank rel=nofollow>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A><BR>><BR>> _______________________________________________<BR>> NSRCA-discussion mailing list<BR>> <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" target=_blank
rel=nofollow>NSRCA-discussion@lists.nsrca.org</A><BR>> <A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank rel=nofollow>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A><BR><BR>_______________________________________________<BR>NSRCA-discussion mailing list<BR><A href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" target=_blank rel=nofollow>NSRCA-discussion@lists.nsrca.org</A><BR><A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank rel=nofollow>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A><BR><BR>_______________________________________________<BR>NSRCA-discussion mailing list<BR><A href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" target=_blank rel=nofollow>NSRCA-discussion@lists.nsrca.org</A><BR><A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank
rel=nofollow>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A></SPAN></FONT></DIV></DIV></BLOCKQUOTE></TD></TR></TBODY></TABLE>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"> </SPAN></FONT></DIV></DIV></DIV></BLOCKQUOTE></td></tr></table>