A. Solar panel: absorb solar radiation and create electricity. b. Battery: Store electricity and discharge upon insufficient sunlight. c. Controller: control the charging or discharging process of whole system
d. DC load: use to demonstrate discharging process of system
e. Fuse: over current protection for each unit
f. Switch: change the status of charging and load current. g. Potentiometer: to change current and provide analog load to solar panel. h. Test sockets: to connect with multimeter (red: positive; black: negative; green: current test) i. Angle board: show the inclined angle of solar panel.
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