Ion Backpack
I am going on a week long mtn. bike tour. Wondering about schematics for solar digital camera battery charger?
I will be in the back country so I won't have access to electricity.
I already have a flexible solar array that can hang from my backpack. I am looking for control circuits that can effectively charge a digital point & shoot camera battery.
My array is 1x2' and puts out 12 volts and up to 400 milliamps at full output about mid-day. I designed and soldered together a regulator to regulate it to 6 volts. But I need something better and more precisely regulated.
My battery is a Li-Ion 3.7V with a 1700 mAh capacity.
Thanks!
This website has a good circuit to do what you're looking for, although it needs a 6 V supply. I'd suggest either rewiring your solar panel so that it outputs 6 V (half the elements in parallel with the other half?) or continue to use the regulator you've already got.
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