Read here --> http://forum.lowyat.net/index.php?showtopic=1150990&hl=
Science Transfers power wirelessly, Wifi, 3G. can electricity did that too?
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 Mar 28 2010, 11:44 AM
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#1
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All Stars
17,018 posts Joined: Jan 2005  
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Maybe you guy a bit slowpoke liau.
Read here --> http://forum.lowyat.net/index.php?showtopic=1150990&hl= |
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Mar 29 2010, 10:05 AM
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#2
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17,018 posts Joined: Jan 2005
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Actually "wireless power" up a device is already been using for many many yrs. And this thing is around us and some of us using it daily. Just we don't realise it.
The touch n go card and the passport chip that been scan is using wireless power to powerup the chip memory and record your data. Nothing special inside. Just the coil and some chip. |
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Mar 29 2010, 03:33 PM
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#3
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QUOTE(Drian @ Mar 29 2010, 01:47 PM) Wifi signal has probably less than a watt output power. Once it reaches your antenna the amount of power your device can absorb is probably less than 1mW. I don't see how 1mW can charge a battery. I guess it using the wave vibration to generate back the current. Any vibration or movement from the wave can generate current to large enough for charging. |
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