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 PostPost subject: Prototype Nokia mobile phone recharges itself        Posted: Wed Jun 17, 2009 6:15 pm 
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With no external power. :D

While we've had this kind of technology around for... What, 70 years (due to crystal radios etc.)? But Nokia have implemented it into a phone.

"Currently Nokia is able to harvest all of 5 milliwatts from the air; the goal is to increase that to 20 milliwatts in the short term and 50 milliwatts down the line. That wouldn't be enough to keep the phone alive during an active call, but would be enough to slowly recharge the cell phone battery while it's in standby mode, theoretically offering infinite power -- provided you're not stuck deep underground where radio waves can't penetrate." - As taken from the article.

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 PostPost subject: Re: Prototype Nokia mobile phone recharges itself        Posted: Wed Jun 17, 2009 6:36 pm 
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Thats a really cool feature, I would buy this. Wow, just from the air alone? That would be handy. I'm always getting low battery alerts when I'm out or at school. Nice.


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 PostPost subject: Re: Prototype Nokia mobile phone recharges itself        Posted: Wed Jun 17, 2009 9:19 pm 
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Crystal radios were used in the mid 20's by radio amateurs.
They created a very weak signal yet, the signal may be amplified to generate more power.

A friend of mine and I created a device capable of lighting a little bulb by creating about 100 crystal radios and therefore creating one 100x boosted "current" we could amplify and give an interesting use. If you combine them with solar cells it's a very useful idea.

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 PostPost subject: Re: Prototype Nokia mobile phone recharges itself        Posted: Wed Jun 17, 2009 11:32 pm 
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Eventually, it will be trade off for coverage ^^

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