2022.10.09 02:13photoresistor enables the solar lights to automaticallyThe PV panel, the resistor, the battery and the LED are joined together on a controller board. The LED An LED is a light-emitting diode. The semiconductor has negative-type and positive-type silicon layers. A solar light battery contains a cadmium anode, a nickel oxide-hydroxide cathode and a potassium hydroxide electrolyte. ...