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DiscoverCircuits.com -- Hobby Corner
Last Updated on:
Monday, March 26, 2012 06:52 AM
Hobby Circuits'
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Circuit Solar Powered Lithium Ion
Battery Charger
designed by David A. Johnson, P.E.
May 15, 2007 |
| The circuit below feeds a
controlled current and voltage to a 3.6v lithium ion battery. The current is limited
to 300ma and the voltage is limited to 4.2 volts. The circuit uses a LTC1734 IC from
Linear Technology. No diode is needed between the circuit and a 6 volt solar panel. |
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| The circuit below feeds a controlled
current and voltage to a 3.6v lithium ion battery. The current is limited to 300ma
and the voltage is limited to 4.2 volts. The circuit uses a LTC1734 IC from Linear
Technology. No diode is needed between the circuit and a 6 volt solar panel. Some
very nice 6 volt solar panels are available from
http://www.plastecs.com Their SP6-200-12 cranks out about 1 watt while the
SP6-300-12 can produce about 2 watts. Assuming a 6 hour sunlit day, the 2 watt
panel will pump about 1.8 amp-hours into a battery. |
www.plastecs.com SP6-200-12 |
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Click on Drawing Below to view PDF version of Schematic |
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