Smaller is little better ...

A project log for Square Inch - PCB coil joule thief

Smaller version for - The Return of the Square Inch Project

bobriciusbobricius 09/07/2018 at 20:300 Comments

New boards arrived, results are amazing

very low startup voltage ... 0.45V only, frequency 470kHz

with this super low voltage startup I created new wearable project ... BPW34 solar flasher