Controlling LEDs with the help of a timer and a low-voltage power supply

Controlling LEDs with the help of a timer and a low-voltage power supply
When developing new types of LED drivers with the maximum of two galvanic cells, engineers often use a low-voltage power supply for one or several LEDs.
This is done to reduce the number of batteries and shrink the size of the LED device.
LED drivers working from low-voltage power supply are used in portable flashlights ...