<html> <head> <style></style></head> <body class='hmmessage'><div dir='ltr'> Thanks, Richard for all the great info (and to Mike Lee for the theremon suggestion). I'll have to try all these things! Will report back in a couple of days.<div>Caryl<br><br><div><div id="SkyDrivePlaceholder"></div>> Date: Fri, 2 Nov 2012 19:59:27 -0400<br>> Subject: Re: [support-gang] Questions About Solar Panels<br>> From: richard@laptop.org<br>> To: support-gang@lists.laptop.org<br>> CC: cbigenho@hotmail.com; support-gang@laptop.org; iaep@lists.sugarlabs.org<br>> <br>> ><br>> > I can assure you that the whine will not damage the panel.<br>> <br>> Oops. Meant to say "will not damage the XO-1."<br>> <br>> > I have a software tool specifically for this purpose. Its called<br>> > olpc-panel-pwr.<br>> <br>> Oops again. should be: "called olpc-panelpwr-log"<br>> <br>> > There is one small detail that I've discovered since then. If the output of<br>> > the panel is 20+ Volts. Then the 1.75 may fail to turn on at all if there<br>> > isn't a battery. Under certain conditions the high voltage makes our power<br>> > supply circuit do some bad things on startup.<br>> <br>> I'll add these bad things are harmless to the XO-1.75. But it won't power on.<br>> <br>> Hope all that info helped.<br>> <br>> -- <br>> Richard A. Smith<br>> One Laptop per Child<br></div></div> </div></body> </html>