Wireless Power To The People Wireless Charging 101

An introduction to the world of modern wireless power electronics with practical engineering demo circuits

Last updated 2022-01-10 | 4.8

- Learn the various wireless power methods in research and development today (including a few that are scams!)
- Learn the pros and cons of all the different wireless power methods and the ONE technology mature enough for mainstream consumer use
- Understand electromagnetic induction

What you'll learn

Learn the various wireless power methods in research and development today (including a few that are scams!)
Learn the pros and cons of all the different wireless power methods and the ONE technology mature enough for mainstream consumer use
Understand electromagnetic induction
Intuitively understand resonance and LC resonant circuits
Understand inductive coupling and resonant power transfer
Build a circuit that can wirelessly power a small fan
Build a wireless power circuit that can power an LED 15cm away
Build a wireless power circuit that can power LEDs
electric motors and more 30cm away
Understand "the skin effect" and how to mitigate it
Understand the main components of modern commercial wireless charging systems (with emphasis on Qi)
Understand how data communication works in Qi wireless power systems
Use off the shelf hardware to wirelessly charge phones
Playstation controllers and other USB devices
Use off the shelf hardware to wirelessly power any electronic device up to 4 watts

* Requirements

* Basic knowledge of electricity
* resistors
* capacitors
* inductors
* transistors
* breadboards
* Basic knowledge of schematic reading
* function generators and oscilloscopes if you want to recreate some of the experiments yourself
* The bill of materials is US$11 if you would like to replicate the experiments at home

Description

  • Learn the various wireless power methods in research and development today (including a few that are scams!)
  • Learn the pros and cons of all the different wireless power methods and the ONE technology mature enough for mainstream consumer use
  • Understand electromagnetic induction
  • Intuitively understand resonance and LC resonant circuits
  • Understand inductive coupling and resonant power transfer
  • Build a circuit that can wirelessly power a small fan
  • Build a wireless power circuit that can power an LED 15cm away
  • Build a wireless power circuit that can power LEDs, electric motors and more 30cm away
  • Understand "the skin effect" and how to mitigate it
  • Understand the main components of modern commercial wireless charging systems (with emphasis on Qi)
  • Understand how data communication works in Qi wireless power systems
  • Use off the shelf hardware to wirelessly charge phones, Playstation controllers and other USB devices
  • Use off the shelf hardware to wirelessly power any electronic device up to 4 watts

Course content

18 sections • 32 lectures

Course introduction Preview 02:30

How much power do we need? Preview 02:17

Power calculation

Ensure you know how to perform basic power calculations

Tesla Coils Preview 04:12

A video lectures on the strengths and weaknesses of Tesla coils as wireless power transfer systems.

Tesla coils

Test your understanding of Tesla coils

Wireless power with radio waves Preview 06:42

Wireless power over radio waves

Test your understanding of the feasibility of wireless power over radio frequency waves

Directional antennas to the rescue? Preview 04:52

Directional antennas and wireless power

Further test your understanding of directional antennas and wireless power over radio waves

Ambient noise and piezoelectric based systems Preview 02:25

Energy harvesting quiz

Flex your critical thinking skills!

Electromagnetic induction and transformers Preview 03:31

Electromagnetic induction and transformers

Test your understanding of electromagnetic induction and transformers

A simple inductive wireless power system Preview 07:54

Inductive power transfer quiz

Test your understanding of the circuitry.

What is resonance? Preview 05:30

Resonance quiz

Test your ability to calculate a resonant frequency

Resonant inductive wireless power transfer Preview 07:12

Resonant inductive wireless power transfer

Test your understanding of our newly augmented wireless power system!

Increasing the range of inductive wireless power Preview 02:09

Increasing range quiz

Increasing range quiz

When is a wire not a wire? Preview 03:54

Litz wire quiz

Litz wire quiz

The Qi standard Preview 06:19

Qi quiz

Test your understanding of a few of the main parts in a Qi system

Qi communications demo Preview 02:31

Qi communications quiz

Qi communications quiz

Bonus! The new frontier: Cutting edge research and development in wireless power Preview 02:34