In this Video i will show you how to hook up widely available components to make a voltage regulated Joule Thief for 1$,that will allow you to use AA or other batteries down to 0.25v to have a steady output of 5 to 28v to power LEDs,charge devices,etc.
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Music: Spyglass by Kevin Mcleod (CC 3.0 - Incompetech.com)
