Wireless Power To The People Wireless Charging 101
Tags: Electronics
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
* 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!
Conductive "wireless" chargers Preview 01:38
Inductive power transfer overview Preview 00:54
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.
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
Mo power, mo problems Preview 03:56
The Qi standard Preview 06:19
Qi quiz
Test your understanding of a few of the main parts in a Qi system