@▷ Efficient LED Driver Works with Single AA Cell | Diagram for Schematic

Efficient LED Driver Works with Single AA Cell

This driver circuit is not only boost the voltage to enable a single battery cell to power  two red LEDs or one white LED, but also regulate the current so the light will be constant until the battery runs out its power.

Efficient LED Power Supply for AA Cell circuit schematic

The main component of this single cell LED driver is transistors and ferrite core transformer. You can visit  here for more information about this single cell battery  LED circuit.

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