<div dir="ltr">Sounds like you might need some sort of voltage regulator between your UPS and the MBM. </div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Oct 9, 2014 at 2:05 PM, David Anders <span dir="ltr"><<a href="mailto:danders@circuitco.com" target="_blank">danders@circuitco.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Thiago,<br>
<br>
yes that is correct... min 4.75V<br>
<br>
Dave<br>
> On October 9, 2014 at 2:03 PM Thiago Tenório Jordão de Vasconcelos<br>
<div class="HOEnZb"><div class="h5">> <<a href="mailto:thiagottjv@gmail.com">thiagottjv@gmail.com</a>> wrote:<br>
><br>
><br>
> Hi guys, thanks for the answers.<br>
><br>
> But even When I don't use a USB the minimum is 4.75V, right?<br>
><br>
> Atenciosamente,<br>
><br>
> Thiago Vasconcelos<br>
><br>
> --<br>
> Programador Web<br>
> Portfolio: <a href="http://thiagottjv.com" target="_blank">http://thiagottjv.com</a><br>
> Fone:<a href="tel:%2B55-81-96320562" value="+558196320562">+55-81-96320562</a><br>
><br>
> On Thu, Oct 9, 2014 at 4:00 PM, David Anders <<a href="mailto:danders@circuitco.com">danders@circuitco.com</a>> wrote:<br>
><br>
> > Thiago,<br>
> ><br>
> > the input voltage is used directly to power the USB interfaces on the main<br>
> > board, therefore, the tolerance is configured to be the same as the USB<br>
> > specification which states that the voltage is +- 0.25V , for a minimum of<br>
> > 4.75V<br>
> > and a maximum of 5.25V<br>
> ><br>
> > Dave<br>
> ><br>
> ><br>
> > > On October 9, 2014 at 1:57 PM Joey C <<a href="mailto:casas.joey@gmail.com">casas.joey@gmail.com</a>> wrote:<br>
> > ><br>
> > ><br>
> > > I've seen weird usb and SATA drive things when using a 2A power supply. I<br>
> > > went to a 2.4 and those issues resolved.<br>
> > ><br>
> > > On Thursday, October 9, 2014, Thiago Tenório Jordão de Vasconcelos <<br>
> > > <a href="mailto:thiagottjv@gmail.com">thiagottjv@gmail.com</a>> wrote:<br>
> > ><br>
> > > > Hi,<br>
> > > ><br>
> > > > Someone know what is the minimal voltage to supply the MinnowBoard MAX?<br>
> > > ><br>
> > > > I'm going to use a UPS system and when the power goes down on the<br>
> > change<br>
> > > > from the wall power to the battery the voltage goes down to something<br>
> > near<br>
> > > > 4.435v during the 10ms of the transition.<br>
> > > ><br>
> > > > Thank you,<br>
> > > ><br>
> > > > Thiago Vasconcelos<br>
> > > ><br>
> > > _______________________________________________<br>
> > > elinux-MinnowBoard mailing list<br>
> > > <a href="mailto:elinux-MinnowBoard@lists.elinux.org">elinux-MinnowBoard@lists.elinux.org</a><br>
> > > <a href="http://lists.elinux.org/mailman/listinfo/elinux-minnowboard" target="_blank">http://lists.elinux.org/mailman/listinfo/elinux-minnowboard</a><br>
> > _______________________________________________<br>
> > elinux-MinnowBoard mailing list<br>
> > <a href="mailto:elinux-MinnowBoard@lists.elinux.org">elinux-MinnowBoard@lists.elinux.org</a><br>
> > <a href="http://lists.elinux.org/mailman/listinfo/elinux-minnowboard" target="_blank">http://lists.elinux.org/mailman/listinfo/elinux-minnowboard</a><br>
> ><br>
_______________________________________________<br>
elinux-MinnowBoard mailing list<br>
<a href="mailto:elinux-MinnowBoard@lists.elinux.org">elinux-MinnowBoard@lists.elinux.org</a><br>
<a href="http://lists.elinux.org/mailman/listinfo/elinux-minnowboard" target="_blank">http://lists.elinux.org/mailman/listinfo/elinux-minnowboard</a><br>
</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><font color="#333333" face="proxima-nova-1, proxima-nova-2, Tahoma, Helvetica, Verdana, sans-serif" size="1"><span style="line-height:18.2000007629395px"><b>Michael Jarvis</b></span></font><div><font color="#333333" face="proxima-nova-1, proxima-nova-2, Tahoma, Helvetica, Verdana, sans-serif" size="1"><span style="line-height:18.2000007629395px">McKinney, TX USA</span></font></div><div><font color="#333333" face="proxima-nova-1, proxima-nova-2, Tahoma, Helvetica, Verdana, sans-serif"><span style="line-height:18.2000007629395px"><a href="http://about.me/michael.a.jarvis" target="_blank"><font size="1">http://about.me/michael.a.jarvis</font></a></span><br></font></div></div>
</div>