The lightsaver flashlight has run 250 hours But I have an improved design that increases the luminance greatly ( this was done by adjusting the disk capacitor for brightness vs. current draw ). The current draw of the new driver is 50 uA draw but so bright that you can not look directly at the LED’s . That equates to about 470 straight days of run time, did I fail to note that was with 20 LEDs which is in line with the 24″ shop light that is run from AA batteries for 3 – 5 years of straight run time. Batteries only last for 3 – 5 years shelf life. That is the long term goal of the project where even impoverished areas of the world can have cheap lighting without electric service.
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