Solar panel voltage regulator by LM358 , TIP142
Here is the schematic diagram of my regulator. You may want to print it out, and then go on reading. This regulator is designed for 12V systems employing panels of up to 7A total current, and loads of not over 20A. It can be easily modified for greater currents. [....]
Link : http://ludens.cl/Electron/solarreg/Solarr%7E1.htm
