...RCA Airnergy, a small USB device that harvests electrical power from Wi-Fi signals. Anytime the device is in the vicinity of one or more Wi-Fi sources, the Airnergy is charging, converting the wireless antenna signal into DC current that can power myriad small electronics. The idea isn’t novel, but this is the first time anyone has created a commercial product efficient enough to be useful.
Thursday, January 14, 2010
Harvests electrical power from Wi-Fi signals...
http://www.popsci.com/technology/article/2010-01/rca-airenergy-pulls-power-thin-air-charging-your-phone-wi-fi
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