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lurch234 posted a topic in Technology NewsLogitech finally finds a good use for wireless charging: A mouse pad With a Powerplay mouse pad, never again will your wireless mouse run out of power. Guys... guys. Put down your morning coffee. Loosen any tight clothing. Say a quick prayer to your favoured deity. Logitech has done it. Logitech has found a legitimate use for wireless charging: the Powerplay mouse pad, which constantly charges your wireless mouse. Your wireless mouse will never again run out of battery. The Powerplay bundle ($100 in the US, probably £90 in the UK) consists of a wireless charging base, two mousing surfaces (soft and hard) that you can switch between, and a powercore module. (Did Logitech hire the Nvidia marketing guru who came up with "Forceware" or something?) The powercore is a little puck that plugs into Powerplay-compatible wireless mice. At launch there will be two of them: the G903 (a tweaked G900) and the G703 (which is similar to the G403). Both mice are available later this month, but UK pricing is still TBC (probably £140 and £90 respectively). Theoretically, future wireless Logitech mice will support the powercore, so you can keep using the same Powerplay charging mat. Sadly, Powerplay doesn't use a standardised wireless charging tech like Qi; rather, Logitech has apparently spent the last few years developing something proprietary. Technical details are scant, though we know it's based on magnetic resonance wireless power transfer—a fairly well-known technique. Basically, there's a coil of wire (an antenna) in the powercore. In the charging mat, there's another antenna tuned to the same frequency as the powercore. When power is flowing through one of the coils, it makes the other coil resonate, which can then be turned into electricity. More at Source
Will our phones be perpetually fully-charged in the future? Disney Research has successfully turned an entire room into a wireless charging station -- and the invention could be a total game-changer for the digitally-obsessed. The study tested a method called Quasistatic Cavity Resonance, which induces electrical currents in an enclosed metallic structure. The power is generated and amplified outside the room, which is picked up by a coil receiver inside the room and transmitted to discrete capacitors within a copper pole. The induced currents flow through the pole, ceiling, walls and floor, generating an electromagnetic field. POSTER NOTE: It hasn't been that many years ago that doctors were warning us about the connection between brain tumors and cell phone use. There were also cases of physical problems in people who lived near high tension power lines. So might this be a case of getting your brain fried while you get your phone charged? Source
vissha posted a topic in Mobile NewsIs It A Good Idea To Charge Your Smartphone Overnight? Will Charging Your Smartphone Overnight Damage It? Here’s What You Should Know There are chances that many of us plug in our smartphone for charging while going to bed at night, so that you do not have a fully drained device or low battery while rushing to work or travelling, etc. If you think that charging your device overnight is a good idea, you may want to think again. If you plan to upgrade your smartphone every two years, leaving your device to charge overnight will not do much damage to your battery. Experts say majority of the time those people are not going to notice much damage to their smartphone batteries before they start wishing for a new device. However, frequent charging does damage the lithium-ion batteries in our smartphones. And it’s not because they can be overcharged, said Edo Campos, a spokesman for Anker, which produces smartphone chargers. “Smartphones are, in fact, smart,” Mr. Campos said. “They know when to stop charging.” In other words, smartphones are designed to understand when the battery is at capacity, and should at that point stop absorbing additional electrical current. According to a report by The New York Times, Android smartphones and Apple iPhones are equipped with chips that protect them from absorbing excess electrical current once they are fully charged. Theoretically, any damage from charging your smartphone overnight with an official charger, or a trustworthy off-brand charger, should be negligible. The report stated that most smartphones use technology that allows their batteries to charge faster, but this process leads to lithium-ion and lithium-polymer batteries rusting faster. If a user wants to preserve the life of their lithium-ion battery beyond the typical lifetime of a smartphone – usually two years – they can try using a charger made for a less-powerful device, stated the report. Source