Green PG: A low cost, modular, pedal-powered 5–20 V parallel DC source for mobile computing applications

Green PG is a pedal powered notebook and cell phone charger, which converts mechanical energy produced by exercise devices into electrical energy with 5 V and 19.5 V DC outlets. Thus, portion of the wasted heat from pedaling is recovered for use. The efficient Green PG architecture is modular, and can be reconfigured for a variety of cost optimized end use scenarios, simultaneously addressing the sustainable energy needs of remote under-developed geographies, long range cyclists, and modern gymnasiums. Performance tests indicate many mobile electronic appliances relevant to daily life can be operated by this green power source.