Vet inte vad detta tillför men det är ju uppenbart fler som vill använda cykel för att ladda batterier.
http://www.gizmag.com/pedalpower-bicycle-charger/12451/
citat
"Dynamos give out an AC current and to charge a phone, MP3 player or GPS you need a DC unit. It's easy at home with a wall unit because the current is constant, but not from a bike's dynamo where the current varies greatly depending on the speed you are going. You need to be able to invert that current and regulate it in a way that doesn't burn out expensive equipment when riding fast. It took us about three years to get it right," Kidd said.
"We've found a way to regulate the currently, making sure the voltage is consistent for phones and GPS units and, regardless of how fast the rider travels, the PedalPower+ can't go past that maximum safe level."
slut citat.
Länk till deras egen hemsida?
http://www.copycatsolar.com/index.htm
Man måste ju inte köpa deras grej, men kan få tips om vad som är problemen och hur de löste detta. Kanske går att göra likadant till lägre pris.