Week 4 Updates - All the components needed as of now have
been ordered and some of them have also been received. The do-it-yourself shake
flashlight arrived recently and we have been tinkering with it for a while. We have
conducted many tests on it to determine if this magnet-coil system is able to
provide enough power to charge a cell phone. After dissembling the shake
flashlight, we used a multi-meter to determine several voltage and current
values that we need to charge a cell phone. As of now, the magnetic-coil system
is able to provide a constant current of .632 Amps which is just enough to
charge a cell phone battery. As for the design aspect of the whole project, a
new idea was finally incorporated into the design. We finally decided and
bought a AA battery powered emergency cell phone charger that should we will
use to charge the phone. The basic concept is that the magnet coil system will
provide electricity to charge two AA NiMH rechargeable batteries that will be
placed into the emergency cell phone charge which will then be able to charge
the phone.
A few links that helped us inspire these ideas can be found
below.
http://laserpointerforums.com/f60/diy-10-solar-cell-phone-charger-76550.html
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| The Shake Flashlight whose design we are basing the cellphone charger on |
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| The main components of the shakeflashlight: the magnet and coil |
