solar charger circuit diagram

The nominal voltage of the solar charger circuit module is determined by the number of battery cells to be charged. Because of the typical voltage drop of 0. 3 to 0. 4 V across Schottky diode D1, the nominal voltage should exceed the charge voltage set on P1 by about 0. 3 0. 4 V. The solar panel for this project is a typical solar module that consi
solar charger circuit diagram - schematic

sts of eight series connected solar cells. In sunshine the solar panel will supply about 140 mA -200mA or more( depends of the solar panel used ) at 8 times 0. 45 V = 3. 6 V. When the voltage rises above a certain level (full charge ), a power resistor is switched in parallel with the solar panel, which causes output voltage of the solar panel to drop and stops the batteries from being charged.

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