Introduction: Test Mini Booster 1.5v a 5.5v
In the market sold a small boosters that convert the voltage of 1.5V alkaline 5.5v in this case, is a small elevator, you could say that is the commercial version of joule thief, although the current is minimal interesting applications will be made with this little device.
More information on this project :
Blog PDAControl English
Step 1: Opening Device
Step 2: Booster Supply
Booster supply circuit