Wireless Power Gets A Boost

srizah writes "At CES, Las Vegas, two companies — Arizona-based WildCharge and Michigan-based Fulton have demonstrated what are very different ways to charge gadgets sans wires. "

Comments

Re:I, for one ...

[rahlquist]

Its been in limited use for years in Electric toothbrushes and its relatively safe. If you understand how inductance and transformers work then you've got more than half the understanding.

From Wikipedia "A transformer is an electrical device that transfers energy from one circuit to another by magnetic coupling with no moving parts. A transformer comprises two or more coupled windings, or a single tapped winding and, in most cases, a magnetic core to concentrate magnetic flux. A changing current in one winding creates a time-varying magnetic flux in the core, which induces a voltage in the other windings."

Think of these devices as each the charging base and the unit to be charged having half the transformer, bring them into proximity of each other and they begin to work. Ok its an over simplification but thats the basics.