Hasta La Gadget!

Wireless power demos abound at CEATEC, and Rohm Semiconductor had their own variant on hand with a complete mix of direct-draw gadgets, along with the omnipresent charging iPhone 4 (or was it a 4S?). Like Murata’s prototype, the Rohm flavor uses square electrodes instead of the coils that you’ll find in traditional wireless power solutions, like Qi. But unlike that seemingly identical solution from Murata, this version supports much greater power efficiency — something in the 92 to 93 percent range (compared to the competing pad’s 70-percent efficiency rating). That means that the prototype that we’re looking at here loses just seven to eight percent of power during transmission — which is still unacceptably high, mind you, but far more tolerable. Rohm’s Wireless Power Transmission system also allows you to charge or power devices by placing them anywhere on the pad, rather than directly over charging positions, and it supports much greater transmission, with one prototype outputting up to 100 watts.

Since power efficiency isn’t something we could verify visually, what we could see at the company’s demo did appear to work quite well. Powering a gadget is as simple as dropping it on the pad. Well, resting it gently — this is a prototype we’re talking about, after all. The 50-watt pad was able to power a fan, LED light, and a couple of charging smartphones without issue. The light and fan jumped to full power as soon as they made contact. A second pad got the juices flowing to a large OLED light panel, which was plenty bright when positioned on its own pad, but glowed quite dim when joining other devices. There weren’t any charging laptops on hand, like we saw over at Murata, but with power output at 50 and 100 watts, either pad could theoretically support it. Like many of the prototypes we’ve seen at CEATEC, there aren’t any plans to actually bring the system to market, but the technology could be used in other devices. We go hands-on after the break.

Continue reading Rohm Wireless Power Transmission system hands-on (video)

Rohm Wireless Power Transmission system hands-on (video) originally appeared on Engadget on Thu, 06 Oct 2011 09:42:00 EDT. Please see our terms for use of feeds.

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Researchers at the University of Wisconsin-Madison have come up with a way to produce electricity from just about the most renewable source known to man — his own breath. It’s all thanks to a plastic microbelt developed by engineers Xudong Wang, Chengliang Sun and Jian Shi. Made of a material known as polyvinylidene fluoride (PVDF), this belt produces an electric charge whenever low-speed airflow passes over it and causes it to vibrate — a result of that vaunted piezoelectric effect. Eventually, Wang and his team were able to tinker with their system to the point where it could produce enough current to charge small electronic devices. “The airflow of normal human respiration is typically below about two meters per second,” Wang explained. “We calculated that if we could make this material thin enough, small vibrations could produce a microwatt of electrical energy that could be useful for sensors or other devices implanted in the face.” The researchers say their technology could be used to power smaller biomedical devices like blood monitors and pacemaker batteries, which typically don’t demand vast amounts of energy. No word yet on when this system could make its way to the mainstream, but we’ll be waiting with bated breath.

Piezoelectric system turns your balmy breath into pungent power originally appeared on Engadget on Wed, 05 Oct 2011 04:02:00 EDT. Please see our terms for use of feeds.

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Copper wire’s relatively cheap, pliable and can conduct electricity, but it’s hardly ideal. Powering cities requires cables meters wide and the metal loses a lot of energy as heat. Fortunately, a team from Tel Aviv University thinks it’s solved the problem. Borrowing a fiber of sapphire from the Oakridge National Lab in Tennessee, it developed a superconducting wire barely thicker than a human hair that conducts 40 times the electricity of its copper brethren. Cooled with liquid nitrogen, the sapphire superconductors carry current without heating up, which is key to their efficiency. The team is now working on practical applications of the technology — because it’s so small and pliable (unlike previous superconductors) it could replace copper in domestic settings and its cold efficiency makes it perfect to transmit power long distances from green energy stations. The wire’s going on a world tour as we speak and will touch down at the ATSC conference in Baltimore in October. Anyone who makes jokes about wires and Baltimore will be asked to leave, politely.

Superconducting sapphire wires are as cool as they sound originally appeared on Engadget on Fri, 09 Sep 2011 05:07:00 EDT. Please see our terms for use of feeds.

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Each week our friends at Inhabitat recap the week’s most interesting green developments and clean tech news for us — it’s the Week in Green.

It’s been an epic week for environmental news as Inhabitat reported that the East Coast battened its hatches against the force of Hurricane Irene, which has arrived in the wake of a 5.8 earthquake that shook the Eastern Seaboard from Virginia to New York. We compiled a series of tips to help our readers weather the storm, and we took a closer look at the six nuclear power plants that were shaken by the East Coast’s unusual quake. We also showcased several incredible examples of high-tech architecture — the recently crowned world’s tallest LEED platinum building and the world’s longest tunnel, which Russia recently announced would span the Bering Straight.

Speaking of remarkable advancements in sustainable transportation, this week we took at look at what could be most powerful electric car on earth, and we brought you footage of the 200 mph Lighting superbike breaking a world land speed record. We also saw eco vehicles take off for greener horizons as Oliver VTOL unveiled an ultra-efficient airplane with 6 engines, a team of engineers in Africa constructed a DIY space shuttle in a local garden, and the flying ParaMoto Trike soared through the skies. On the topic of air travel, you may also want to check out our six tips for flying with small children (without Benadryl).

It was a big week for wearable technology as well, as researchers unveiled a powerful kinetic energy generator that can fit in your sneakers. We also saw a vibrating glove that improves motor performance, a haptic glove that allows the blind to see with sonar, and a range of antenna-embedded clothing that offers a discreet form of hands-free communication. Finally, we heard Ashton Kutcher predict that wearable technology will be the next big wave, and we shared a glow-in-the-dark sequin gown that would make a choice piece of evening wear if this weekend’s storm knocks the lights out.

Inhabitat’s Week in Green: Lighting superbike, kinetic energy generator and vibrating gloves originally appeared on Engadget on Sun, 28 Aug 2011 20:30:00 EDT. Please see our terms for use of feeds.

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You’d think, watching companies like Apple break ground on sprawling data centers, that the number of servers powering our untethered lives was on the rise. In a different decade, you might have been right. But not this one. According to a study prepared at the request of The New York Times, the number of servers in use has declined “significantly” since 2005. That’s mostly because of the financial crisis of 2008, says lead researcher Jonathan G. Koomey of Stanford University, but we also can’t discount the effect of more efficient technologies. What’s more, he says, servers worldwide consume less energy than you might have guessed: they accounted for somewhere between 1 and 1.5 percent of global electricity use in 2010. And while Google, the king of cloud computing, has been cagey about revealing just how many servers house its treasure trove of data, the company said that of that 1 to 1.5 percent, it accounted for less than 1 percent — meaning, just a hundredth of a percent of all the electricity consumed last year. All told, data centers’ energy consumption has risen 56 percent since 2005 — a far cry from the EPAs 2007 prediction that this figure would double by 2010, with annual costs ballooning to $7.4 billion. Then again, this slower-than-expected growth could well be temporary. Though Koomey can’t specify to what extent the financial crisis and technological advancements are to blame, he insists, broadly speaking, that we’re primarily seeing fallout from the economic slowdown — a stay of execution, of sorts, for those of us rooting for energy conservation.

Report: data centers accounted for just 1 to 1.5 percent of electricity use last year, Google claims less than 1 percent of that originally appeared on Engadget on Tue, 02 Aug 2011 16:06:00 EDT. Please see our terms for use of feeds.

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