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==Photovoltaic panel==
 
==Photovoltaic panel==
 
The D.LIGHT S250 is common in the developing world [[http://www.dlightdesign.com/products_D.LIGHT_S250_global.php]]
 
The D.LIGHT S250 is common in the developing world [[http://www.dlightdesign.com/products_D.LIGHT_S250_global.php]]
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It has a 6V solar cell, the outer connection is -ve and the inner +ve
    
== RC time constant ==
 
== RC time constant ==
2,486

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