In this instructable i will show you how to build simple joule thief
Step 1: Build It
To power circuit you need 1,5 volt battery if you dont have clip for it you can solder wires directly to battery, but be carefull to not overheat it and before soldering you need to sand paper the surface
Step 2: Practical Use of It
You can take out a little oscillator board from an old clock and connect to battery then to joule thief, and now you have low power led blinker. Loose wires that are on the photo should be connected to joule thief.