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My little question is: do the solal panel and the battery share the same =
ground? Or is there anywhere connected to earth ground by fault?
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I just had this problem this early morning.



> Date: Thu, 14 Aug 2008 12:28:55 -0400> From: namiller2@naxs.net> To: pi=
clist@mit.edu> Subject: [EE] Need advice on a boost converter for chargin=
g batteries.> > Hello,> > I posted about this a while back and this is a =
bit of an update. I have an> electric golf cart that has solar panels mou=
nted on top the canopy. The> solar panels produce about 15V under load an=
d the lead acid battery pack has> a voltage of 48V. My problem is to rais=
e the panel voltage in order to> charge the batteries.> > My first attemp=
t was to build a boost converter using the LT1680> controller. I built th=
e typical application circuit that is in the device's> datasheet and unde=
r workbench tests it operated fine, with the exception of> a bit of audib=
le noise. The web page for the LT1680 is here:> http://www.linear.com/pc/=
productDetail.jsp?navId=3DH0,C1,C1003,C1042,C1031,C1115,P1597> > My troub=
le is that I connected the converter ground to the battery pack and> then=
 when I touched the positive wire to the ba
 ttery terminal there was a> big blue spark and now the converter is no l=
onger working. :( I haven't> repaired the converter yet, but I'm wonderin=
g if the converter design I used> is appropriate for this application?> >=
 I would appreciate any suggestions, insight, or questions.> > -- > http:=
//www.piclist.com PIC/SX FAQ & list archive> View/change your membership =
options at> http://mailman.mit.edu/mailman/listinfo/piclist
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http://im.msn.cn/
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