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A comment on Ultrasonic Power Transfer Investigated Using Data from uBeam Patent Filings. Parent comment

Re:Ultrasonic Power Transfer Investigated Using Data from uB... by Animats on Tuesday October 20, 2015 @06:01PM (#10422119)
Their active area is so small that an ordinary USB-A power outlet would be more useful. You have to plug the rigid coil into your device, then place it exactly over the charging circle.
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Re:Ultrasonic Power Transfer Investigated Using Data from uB... by zemvpferreira on Tuesday October 20, 2015 @06:55PM (#10422416)
Induction is a very practical solution for when you don't have your USB charging cable with you. Plus, who's going to steal the coil to use at home? And it's a pretty magical experience when you use it.
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Re:Ultrasonic Power Transfer Investigated Using Data from uB... by Animats on Wednesday October 21, 2015 @03:36AM (#10424126)
That your phone can get position info from satellites is magical. That you can bring two halves of a transformer together and get power would not have surprised an electrician from a century ago.
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Re:Ultrasonic Power Transfer Investigated Using Data from uB... by MichaelGG on Tuesday October 20, 2015 @06:59PM (#10422441)
> You have to plug the rigid coil into your device,

What is the point then? Plug in your phone, so you don't have to plug in your phone?

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