First battery-free cellphone makes calls by harvesting ambient power
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University of Washington researchers have invented a cellphone that requires no batteries—a major leap forward in moving beyond chargers, cords and dying phones. Instead, the phone harvests the few microwatts of power it requires from either ambient radio signals or light.
Can I play Snake on it?
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University of Washington researchers have invented a cellphone that requires no batteries—a major leap forward in moving beyond chargers, cords and dying phones. Instead, the phone harvests the few microwatts of power it requires from either ambient radio signals or light.
Can I play Snake on it?
Shame we're nice n' analog all the time or we wouldn't need those pesky power hungry ADC/DAC chips. Power from a dynamic mic though. - cool.
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University of Washington researchers have invented a cellphone that requires no batteries—a major leap forward in moving beyond chargers, cords and dying phones. Instead, the phone harvests the few microwatts of power it requires from either ambient radio signals or light.
Can I play Snake on it?
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Oooooh, silly me, you're definitely right.
TTFN - Kent
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University of Washington researchers have invented a cellphone that requires no batteries—a major leap forward in moving beyond chargers, cords and dying phones. Instead, the phone harvests the few microwatts of power it requires from either ambient radio signals or light.
Can I play Snake on it?
The beginning of The Matrix.
#SupportHeForShe Government can give you nothing but what it takes from somebody else. A government big enough to give you everything you want is big enough to take everything you've got, including your freedom.-Ezra Taft Benson You must accept 1 of 2 basic premises: Either we are alone in the universe or we are not alone. Either way, the implications are staggering!-Wernher von Braun
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University of Washington researchers have invented a cellphone that requires no batteries—a major leap forward in moving beyond chargers, cords and dying phones. Instead, the phone harvests the few microwatts of power it requires from either ambient radio signals or light.
Can I play Snake on it?
Even calling it a cell phone is a stretch IMO. Not just because of the manual TX/RX switch; but because they're using a custom signal encoding method on a base station designed for this purpose. The fact that they talked about integrating into wifi base stations in the future suggests that it's going to be very range limited vs cell signals. And being analog data it's going to be back to having all of the static/etc problems that plagued that medium. From the description they gave, I suspect it needs to have a channel in use 100% of the time vs packeting the data and sharing so forget scaling for large numbers of users. None of which is to say it's not a cool demo; but it's not what the headline writers are trying to hype it as either.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, waging all things in the balance of reason? Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful? --Zachris Topelius Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies. -- Sarah Hoyt
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The beginning of The Matrix.
#SupportHeForShe Government can give you nothing but what it takes from somebody else. A government big enough to give you everything you want is big enough to take everything you've got, including your freedom.-Ezra Taft Benson You must accept 1 of 2 basic premises: Either we are alone in the universe or we are not alone. Either way, the implications are staggering!-Wernher von Braun
Nope, the second step. The beginning is here[^]
M.D.V. ;) If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about? Help me to understand what I'm saying, and I'll explain it better to you Rating helpful answers is nice, but saying thanks can be even nicer.