100 will give us 28 mA, which is more than we normally want in an LED, but probably won't hurt it too much. 270 microHenrys will give us 10 milliamperes. This is fine for a single LED, but if we want to drive several LEDs, we can reduce the size of the inductor and get more current. 330 microHenryswill allow 8 milliamperes to go into the LED. We can control how much current goes to the LED by choosing different values for the inductor. It detects when the solar cell is in the dark, and starts up the circuit inside that boosts the 1.2 volts from the battery to over 3 volts, and sends that to the LED. It charges the 1.2 volt battery during the day, using power from the 2.5 volt solar cell. The integrated circuit does several things. minimum daya 1.2 volt,bisa menyalakan lampu led.(dalam test rangkai paralel 3 pcs led putih). QX5252F 5252F QX5252 TO-94 driver LED chip merupakan chip untuk driver led dari baterai untuk efisiensi daya penggunaan yang lebih awet.
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