Bare PCB # 150245-1 for the project USB to AAA Battery Adapter, as published in Elektor Magazine edition September & October 2015.
No more empty batteries! This adapter can be put in place of a AAA battery. It is powered by USB and converts the voltage down to 1.5 V. Ideal for your benchtop MP3-player. Or as a first SMD-soldering practice project.
For more information, please visit our magazine website: