A typical USB LED bulb shown in Fig. 1 is a 5V, 5W USB-powered solid-state lamp. At the heart of this light bulb is a circular aluminium PCB made with a bunch of 5730 SMD super-bright LEDs. Typical ...

A unique LED light bulb has been created by the Mega Tiny corporation which takes the form of the PowerBulb which not only illuminates your room but also allows you to charge your mobile devices ...