Joule Thief Brings Dead Battery Back to Life

@Zafeirakis

11 years ago

https://everycircuit.com/circuit/5623586710618112

This is a Joule Thief circuit that step up a 0.5V dead battery to 2V constant DC voltage in order to drive a 10mA 2V led...!!! In the example I took into consideration and the internal resistance of the battery.