English to Russian Tech/Engineering Energy / Power Generation wireless power via wi-fi

n Seattle, six households have taken part in an experiment in which modified electrical devices were put in their homes along with a Wi-Fi router. Over 24 hours, the devices were powered solely by the router’s signal, which also continued to provide wireless internet access to the home.

How was this possible? The energy of the radio waves the router sent out was converted into direct current voltage with a component called a rectifier, much as solar panels convert light energy into electrical energy. That voltage was then boosted to a useful level by a DC-DC converter.

The system powered temperature sensors and battery-less low-resolution cameras, and charged standard batteries.

The hard part is getting the router to constantly push out enough energy, says team member Vamsi Talla from the University of Washington in Seattle.



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