20100407_SolarElectronicProject1
A solar-powered night light I made recently. It uses:
(a) The Joule Thief circuit from here:
www.evilmadscientist.com/article.php/joulethief
(b) A Super Capacitor (100 Farads !)
(c) A flexible solar cell (ebay)
(d) A PNP transistor to hold the joule thief off, while light is falling on the solar cell.
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Uploaded on April 7, 2010
Taken on April 7, 2010
20100407_SolarElectronicProject1
A solar-powered night light I made recently. It uses:
(a) The Joule Thief circuit from here:
www.evilmadscientist.com/article.php/joulethief
(b) A Super Capacitor (100 Farads !)
(c) A flexible solar cell (ebay)
(d) A PNP transistor to hold the joule thief off, while light is falling on the solar cell.
1,494
views
2
faves
1
comment
Uploaded on April 7, 2010
Taken on April 7, 2010