I'm not going to reinvent the wheel here. This is a link to about as good a description as your going to find of the circuits and electronics function of wireless charging. >> Click Here <<
What I do want to share here is a warning. Wireless charging is done using a process called induction. Two coils close together. One sending out waves that the other coil takes and converts into energy inside your device.
Induction is a word familiar to the electronics world (Technicians, Engineers, Scientists). It's used a lot in circuits transferring signals and energy.
You may be more familiar with the term involved with a way to cook. Induction can heat certain metals very quickly. You've probably seen the ads promoting that the cooking surface doesn't get hot itself but can rapidly get your pan to cooking temperature.
I recently discovered this same heating effect on my phone case. My case has a metal ring with iron in it to attach the phone to a magnet on my cars dash. Iron really responds to induction. So when I picked up my phone from the charger I noticed it was really hot. Luckily no harm was done to my phone or the case. Still I considered the amount of heat a threat to the case, the phone, and the charger. If you are not sure just check after 10 seconds on the charger. Remember induction works fast. Just feel the phone or case. You will be able to tell. You might prefer to plug in your phone.
I hope this saves someone from damaging their devices.
