The Wireless Cell Phone Chargers EEL 4914 Senior Design Project - PowerPoint PPT Presentation

Feb 19, 2024 •387 likes •486 views

The Wireless Cell Phone Chargers EEL 4914 Senior Design Project University of South Florida Electrical Engineering Bradley Barnett Randell Betterly Tatsuya Hirazawa Advisor : Dr. Paris Wiley Why Wireless Charging? Clip art from

The Wireless Cell Phone Chargers EEL 4914 Senior Design Project University of South Florida Electrical Engineering Bradley Barnett Randell Betterly Tatsuya Hirazawa Advisor : Dr. Paris Wiley
Why Wireless Charging? Clip art from Juperimages.com/123RF. com/Clker.com
Responsibilities Brad Barnett Tatsuya Hirazawa ● DC / AC Oscillator ● Voltage Regulator ● Power Amplifier ● AC / DC rectifier ● Coil Design ● Coil Design Randell Betterly ● Power Amplifier ● Case Construction ● Coil Design The Wireless Cell Phone Charger
Block Diagram The Wireless Cell Phone Charger
Theory Faraday's Law of Induction Ampere's Circuital Law The Wireless Cell Phone Charger
Resolved Issues Problem Solution Inductive Coupling: 1:1 Turns ratio ● Turns Ratio Large turns # ● ● Turns # Coils as close as possible ● ● Efficiency ● Frequency Selection Low enough for breadboard ● tests and negligible parasitic effects High enough for small part ● sizes Converting frequency from 60 Hz AC / DC converter in series with to selected frequency DC / AC converter The Wireless Cell Phone Charger
Unresolved Issues ● Need for a power amplifier? ○ Possibly faster charging ○ More expensive ● Efficiency of entire circuit The Wireless Cell Phone Charger
Timeline The Wireless Cell Phone Charger
Prototype

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