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Fady Mishriki

What’s the big deal about Resonant?

Fady Mishriki
Peter Clarke
Peter Clarke
9/24/2015 11:03:28 AM
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Re: That's Hot
I think you make a very good point.

The industry is so keen to add "convenience" factors to try and increase sales they seem to be blind to the important ecological implications.





Scott Elder
Scott Elder
9/18/2015 1:55:30 AM
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That's Hot
70% effciency delivering 20W to a load means that 8.6W goes primarily into heating back-to-back coils at the surface of a charger.  That will blister a child's hand.  Wired 20W means that 750mW x 2 is spread across two distant objects.  Warm yes, blisters no.

Wireless is a convenience if one has 2-3 hours of time to wait for a charge.  Wired means 50% recharge in 15 minutes plus the 5 seconds to plug in a cable.

Smartphones are mobile devices.  There is nothing mobile about 2-3 hours of idle charging time.

I can think of only one benefit of wireless power in mobile products: sealed computing.

Isn't it interesting that on one hand we have future mandated efficiencies above 80% for wired wall chargers, but no one is complaining about 70% wireless charging efficiencies for the same purpose?





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