M OBILE D EVICE C HARGER P ROPOSAL Mike, Nicole, and Nick

To come up with a device that uses two alternate sources of energy to charge a mobile device O BJECTIVE

N EEDS AND REQUIREMENTS To develop a solution that would be useful in many situations where a standard wall charger would not be available. (Ex. desert, out at sea) Combine two different sources of alternative energy Portable (small/light weight) Easy to use and safe Durable in extreme environments

IDEA #1 “S HOE C HARGER ” Utilizes Kinetic and Thermal energy Kinetic energy From movement inside sole Thermal Energy change of body temperature via the feet

IDEA #1 “S HOE C HARGER ” Estimated Weight: 1 pound Easy to use. “as easy as putting on a shoe.” Affordable save you money in the long run Disadvantages Restricted to using only that shoe Selection may be limited

IDEA #2 “W INDMILL SOLAR CHARGER ” Utilizes wind energy and solar energy Wind energy taken from the wind Solar energy taken from sun

IDEA #2 “W INDMILL SOLAR CHARGER ” Estimated weight: 2 pounds Easy to set up and safe to use Affordable price Recycled materials Disadvantages May end up not sunny and windy at the same time Can only be used outside Not easily transported

FINAL PROPOSAL “S OLAR C RANK CHARGER ” Utilizes Solar energy and Mechanical energy Solar energy taken from sunlight Mechanical energy taken from when user turns the hand of the crank

FINAL PROPOSAL “S OLAR C RANK CHARGER ” Device is easy to use and could be folded up and taken anywhere with ease Hand crank enables the charger to be used indoors as well as out doors

FINAL PROPOSAL “S OLAR C RANK CHARGER ” S IZE AND W EIGHT 29in x 9in (unfolded) 5in x 9in x 1.25in (folded) 1 pound

S OLAR P ANEL Solar Power Output: 4 watt ( mA) Charging time: 1 to 2 hours

H AND C RANK Maximum output voltage: DC 6V Maximum output current: 300 mA Battery charging time: 1 minute translates into 3-5 minutes of talking time

FINAL PROPOSAL “S OLAR C RANK CHARGER ” H OW IT W ORKS Sun Photoelectric Cells BatteryUSBMobile Device CrankCoilMagnet Electricity

FINAL PROPOSAL “S OLAR C RANK CHARGER ” Main components are not too expensive and are easily available makes the device available at an affordable price About $100 Solar Panel Sells for around $100 Crank Sells for as low as $5

FINAL PROPOSAL “S OLAR C RANK CHARGER ”

W ORKS C ITED Dynamo Hand Crank USB Cell Phone Emergency Charger PDA MP3” Ebay. N.p. n.d. Web. 9 Dec “Sunlinq 3” Global Solar. N.p. n.d. Web. 9 Dec. 2012