1.5V battery powers white-LED driver

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https://www.electronics-lab.com/1-5v-battery-powers-white-led-driver/

Although white LEDs are common in a variety of lighting applications, their 3 to 4 V forward-voltage drop makes low-voltage applications challenging. Charge pumps and other ICs are available for driving white LEDs, but they generally don’t work with the low supply voltage of 1.5 V in single-cell-battery applications. The low-voltage circuit of Figure 1 provides […]

Low voltage power supply

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https://www.electronics-lab.com/low-voltage-power-supply-unit/

Dilshan Jayakody has build a low voltage power supply that is able to provide four outputs:  1.5V, 1.8V, 2.5V and 3.3V. This power supply can be used to power low voltage mcus, CPLDs and analog ICs. He writes: In this post we introduce simple and flexible, regulated low voltage power supply unit. This power supply […]