How do wireless charging mats work?

Thursday 29th July 2010
Uploaded by: nikkiwithers
Asked by: Anon

Wireless charging mats allow you to power-up multiple gadgets all at once by simply resting them on the surface, eliminating the need for tangled wires and device-specific adaptors. They work thanks to a process known as magnetic induction, the same method used to charge electrical toothbrushes, which employs an electromagnetic field to transfer energy between two objects.
According to Faraday’s law of induction, a current is produced when a conductive substance passes through a magnetic field. So the electromagnetic force created in the mat induces a current in the device you’re charging.
In future, manufacturers plan to integrate the technology into the gadgets, as well as domestic surfaces and furniture, so you can just drop your gadgets on the kitchen table and leave them to charge. For now, though, your gadgets have to be slipped into special cases that will enable wireless charging.

GOT A QUESTION?

Scratching your head over a burning scientific conundrum? submit your question and we'll get our esteemed panel of experts to answer it for you.

 

Do whales sleep?
previous Q&A Article
What is the largest animal ever eaten by a Venus flytrap?
next Q&A Article
Q&A Tabs

Your DNA is arranged into chromosomes, which are grouped into 23 pairs. When a sperm cell is manufactured, the father’s genome is split in two, so that each sperm receives one chromosome...

The whole brain is active during dreams, from the brain stem to the cortex. Most dreams occur during REM (rapid eye movement) sleep. This is part of the sleep-wake cycle and is controlled by the...

Clingfilm is either made from PVC or low density polyethylene that's treated to make it stretch. When you unroll the clingfilm, some of the electrons on the surface of one layer get pulled away...

All female mammals have a clitoris, the sole purpose of which is to react to sexual stimulation, and presumably this stimulation has evolved to be pleasurable for most species. But establishing...

To create a sound, we have to set matter - whether it's a gas like air, a liquid or even a solid material - in regular motion, creating a wave of specific frequencies, which we hear as a sound of...

Mirrors don’t reverse left and right either – that’s just our interpretation of what happens. Your reflection in the mirror is actually reversed front to back – if you have...

Discovered by an American student named Gary Flandro in the mid-1960s, the slingshot manoeuvre usually involves spacecraft briefly 'coat-tailing' a planet orbiting the Sun, extracting some of the...

The ice disappears because the wind blows away water molecules that have evaporated or 'sublimed' from the ice, so the ice slowly shrinks in size. The molecules that escape are those with the...

We use cookies to improve your experience of our website. Cookies perform functions like recognising you each time you visit and delivering advertising messages that are relevant to you. Read more here