This is a simple inverter circuit or driver provides power for different types of LEDs (eg- white LED, blue LED, UV LED, but also any other LED) from 1.2 Volt or 3.7 Volt single cell or Lithium-ion battery. But the LED starts to shine when the supply voltage is only 0.4 Volt You can use low batteries (that are useless for any other equipment). Voltage drop of a LED diode is approximately 3 Volt (but in this project i used 12 volt, 5 watt LED and voltage drop approximately 7.4 volt), so it is necessary to use a boost inverter circuit or driver. The circuit is very simple and it works on the principle of self oscillating inverter.”

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