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<DIV>The droop in the Jaccio is really minimal. It does a very tight job
of staying at whatever it is set to. It's the wiring after the
regulator.</DIV>
<DIV> </DIV>
<DIV>Ed</DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=mailto:bob@toprudder.com href="mailto:bob@toprudder.com">Bob
Richards</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=mailto:nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, December 06, 2006 8:53
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
regulators</DIV>
<DIV><BR></DIV>
<DIV>Jim,</DIV>
<DIV> </DIV>
<DIV>You are confusing mah and ma. The first is current, the second is
capacity.</DIV>
<DIV> </DIV>
<DIV>The TP packs are rated for up to 15C I believe, so a sustained current of
1.5A is certainly within the operating parameters of the battery.</DIV>
<DIV> </DIV>
<DIV>Robert, I suspect the problem may be in the way you are measuring the
voltage. If you have a long lead of small guage wire, you will have a voltage
drop across that wire. It will be proportional to the wire length and the
current. The regulator has no way of adjusting for that. If at all
possible, make the voltage measurement right at the output terminal of the
regulator.</DIV>
<DIV> </DIV>
<DIV>This is one problem that I have with the 9ZAP internal battery tester. If
you turn on the load, the voltage seems awful low until you take into
consideration the long lead between the plane and transmitter. It would be
much better to have a short lead, or use a load right at the battery end so
there is negligible voltage drop across the long lead.</DIV>
<DIV> </DIV>
<DIV>Keep in mind that a regulator may also have a certain amount of "droop".
The better the regulator, the less droop in voltage with an increase in
current.</DIV>
<DIV> </DIV>
<DIV>Also, regulators will have an inherent voltage drop, such that the input
voltage must stay a certain amount above the regulated voltage for it to be
able to regulate properly. I'm not sure about the Jaccio regulator, but I
think this value is very low, and I would think would work properly with any
input voltage above 7v.</DIV>
<DIV> </DIV>
<DIV>Bob R.</DIV>
<DIV> </DIV>
<DIV><BR><BR><B><I>jivey61@bellsouth.net</I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Robt<BR>Your
battery is 480 mah and you are trying to make it
produce<BR>500mah,1000mah,and 1500mah. The battery does not have the
capacity to<BR>produce these currants.The regulator is ok.<BR><BR>Jim
Ivey<BR>----- Original Message ----- <BR>From: "Robert Mairs"
<ROBERTM@SSSNET.COM><BR>To: "NSRCA Mailing List"
<NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>Sent: Wednesday, December 06, 2006
7:53 AM<BR>Subject: [NSRCA-discussion] regulators<BR><BR><BR>> I've got a
Jaico that regulates to 6.11 volts. Using a 480 mah TP lipo,<BR>> and the
Jaico, I got the following.<BR>><BR>> no load, 6.11v<BR>> 500mah
load, 5.72v<BR>> 1A load, 5.63v<BR>> 1.5A load, 5.54v<BR>><BR>>
Just with the battery, no regulator I get<BR>><BR>> no load,
8.2v<BR>> 500mah, 7.84v<BR>> 1A, 7.51v<BR>> 1.5A,
7.2v<BR>><BR>> I don't understand. Why doesn't the regulated voltage
stay at 6.11v with<BR>a<BR>> load? I always thought using a regulator was
supposed to give you a<BR>> constant voltage so the servos reaction would
always be the same, yet it<BR>> acts just like a battery, just not as
great a drop off it seems.<BR>><BR>><BR>>
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