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Sony Prototype Sends Electricity Through the Air
itwbennett writes "Sony announced Friday that it has developed a prototype power system based on magnetic resonance that can send 'a conventional 100 volt electricity supply over a distance of 50 centimeters to power a 22-inch LCD television.' Unfortunately, Sony's prototype wasted 1/5 of the power fed into it and additional losses 'occurred in circuitry connected to the secondary coil so the original 80 watts of power was cut by roughly a quarter to 60 watts once it had made its way through the system.'"
But if they can't improve on 50cm, I'm just getting a 2ft extension cord for fixed items.
(sorry for mixing units)
Arguing with an engineer is like wrestling a pig in the mud. After a while, you realize the engineer enjoys it.
Since it's from Sony, it will probably have built-in DRM, so only authorized systems can use the power.
The Tao of math: The numbers you can count are not the real numbers.
If this is a Sony technology, you better believe the electricity is going to be in some kind of proprietary format that requires you to purchase special electrons at a 30% premium over industry standard.
If libertarians are so opposed to effective government, why don't they all move to Somalia?
I here someone once figured out a way to send signals from a TV station to a TV set without wires. Crazy I know, but true.
The cake is a pie
Yes but no but anyway you can't stop me, you whale-kissing hippy.
Confucius say, "Find worm in apple - bad. Find half a worm - worse."
Only another 42,163.9995 km to go to use this to send solar power from geosynchronous orbit.
Quick! Somebody buy the Sony engineers a pair of these!
"You cannot simultaneously prevent and prepare for war." -- Albert Einstein
Duracell has invested millions of dollars in wireless power transmitters. These transmitters are about two and a half inches long (6.33 centimeters). One of the transmitters can put out 10 watt-hours, while another type can be daisy-chained to easily produce over 100 volts.
They're constantly improving the technology; Units are usually at least 75%-85% efficient. And they are not affected by the inverse-square law. It's pretty interesting stuff.
Hmmm, let's see: "electricity through the air." Where have I heard that before? Oh, that's right. Lightning.
One "Aw, Shit!" is worth 100 "Ata boys!"
What happens when the power goes out? Does the $20 dollar device have a battery?
Don't worry. The power never goes out in a fire.
is hardly enough distance to reach more than 2 shoulder-to-shoulder people in a crowd. the govt's gonna want better range, and probably higher wattage, before they consider this for crowd control.
"To stop the terrorists."