1. D ESIGN OF A W IRELESS C HARGING S YSTEM FOR A C OMPUTER M OUSE

2. W IRELESS C HARGING S YSTEM T EAM Team Members Andrew Aken James Begell James Juergens Course Instructor Dr. Serpen Faculty Advisor Dr. King

3. P ROBLEM Wireless mice lose connection when batteries die Batteries are inconvenient Current products must use specific mouse

4. P ROPOSED S OLUTION Battery pack will be usable with any wireless mouse Mouse pad will charge battery pack wirelessly

5. B ACKGROUND Magnetic Coupling Maximum Power Transfer Theorem

6. H ARDWARE B LOCK D IAGRAM

7. P OWER OVER USB USB Port 555 Timing Chip JK Flip-Flop MOSFET Gate Driver

8. USB P OWER C IRCUIT

9. I NDUCTIVE C OUPLING Transformer Primary Coil Secondary Coil

10. M OUSE P AD AND M OUSE C OUPLING

11. I NDUCTIVE C OUPLING Transformer Full-Bridge Rectifier Lithium Battery Power

12. B ATTERY P ACK

13. F UTURE P LANS Miniaturization Increased Power Transfer Increased Storage Capacity Customization

14. C ONCLUSION USB powered Magnetically Coupled Power Transfer Universal

15. R EFERENCES Robbins, Allan, and Wilhelm Miller. Circuit analysis: theory and practice. 2nd ed. Albany, N.Y.: Delmar, 2000. Print.