Solar Cell Charger (Mini Project)
Avoids overcharging of NiCad batteries
Published in issue 364, April 2007
In theory you could just connect a solar panel via a Schottky diode to several batteries connected in series. The internal resistance of a small solar panel is sufficiently large to limit the charging current to a safe value. But with such a simple circuit it would still be possible to overcharge the batteries. That's why we’ve put together a little charging circuit that avoids this.
Click below to download a PDF copy of this article from Elektor magazine.
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.