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On 18 Dec 2005 at 13:44, Dave Hall wrote: > The one I have certainly has a diode in it, but if the cells are diodes and > don't have a significant reverse flow through them, it wouldn't be needed, so > now I'm not sure why it's there! I'm really not sure how solar cells work. I THOUGHT the silicon cells were were just PN junction diodes, but I need to ask someone else who is more familiar with them. There certainly are different kinds of light sensitive semiconductors, like the cad sulfide cells, which don't actually generate power, they just change their resistance in the presence of light. Those wouldn't do us any good in this application at all. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~