MagneticInduction
Latest
Scientists tweak wireless power transfer, Tesla nods happily in his grave
Wireless charging may be all the rage these days, but actually beaming electricity -- as sketched above by the man Tesla himself -- still has some snags. North Carolina State U researchers have found a way to possibly vanquish the biggest problem: the difficulty of exactly matching resonant frequencies to amplify current. If external factors like temperature change the tuning of a transmitter even slightly then power drops will occur, but circuitry developed by the NC State scientists would allow receivers to detect these changes and automatically re-tune themselves to match. This could make for more potent car and device charging in the future and, if they stretch the distances a bit, maybe we'll finally get the wire-free utopia Nikola dreamed up 120 years ago.
Qi wireless power standard finalized, universal contactless chargers look closer to reality than ever
The Wireless Power Consortium took a big step forward this past week with the confirmation that its precocious Qi interoperability standard has been finalized. Composed of three documents setting out the interface, performance and compliance requirements, the new dictum has set itself the not inconsiderable challenge of making wireless charging universal, so that any Qi-approved phone can soak up juice from any Qi-verified base station, dock or omnitool. This first spec is limited to devices requiring no more than 5 Watts, an appropriately humble early goal, though cauldrons are already bubbling with ideas for laptops and the like. We just hope the impressive list of big time companies on the Consortium will succeed in taking Qi into the mainstream -- who here hasn't dreamt of their phone being compatible with the Touchstone? [Thanks, MrStringTheorist]
Video: WiTricity is back, promises wireless power within 18 months
What started out as an MIT project two years ago has now progressed into a full-fledged company -- ladies and gentlemen, meet WiTricity Corp. Auntie Beeb (that's the BBC for you Yanks) has grabbed the firm's CEO Eric Giler to discuss some pretty aggressive plans for bringing wireless power to the masses. Yes, we're talking actual through-the-air wireless as opposed to something like Palm's Touchstone, which requires physical contact between charger and chargee. Based on magnetic induction, the magical technology is apparently mature enough to be deployed in the relatively near future, and if all goes to plan, "near future" could translate into "18 months from now." Also of note, Intel is hard at work developing the original concept, and if the parallel engineering of the same idea by two companies isn't enough to get your skepticism dialed down and your browser to the video past the break, what is?
