How to build a photovoltaic light system that operates at all times and is maintenance-free. The key role of the supercapacitor in this design. What is the "Joule Thief" circuit? Delivering ...

Gagyo Tech based in Los Angeles has created a new portable battery powered vehicle jump starter, called the KOMA, powerful enough to start any car or truck and apparently even small ships under 25 ...

This innovative device utilizes a clever joule thief boost converter to efficiently harvest energy, even from the smallest of panels. It stores the collected power in low-cost electrolytic capacitors, ...