Nokia N9 charge possible by nfc?!
 

The charge per nfc should work but also with the Nokia n9, yes it is a nfc chip installed.

let's see if anyone ever tried it.,,. if it would be possible if it was not, unfortunately, a beautiful dream

Re: Nokia N9 charge possible by nfc?!
 

hello ? Charge via bluetooth or wifi or better yet charge via 3G .you can dream but not that much

Re: Nokia N9 charge possible by nfc?!
 

it's only digital signal transmitted from one to the other phone via nfc . Only modding antenna , connect it as a charger .

Re: Nokia N9 charge possible by nfc?!
 

Yes then it has to continue recharging kable ago ;-) :eek: keep that's probably indulged only the Lumia 920,.,., ****..., But cool thing:D

Re: Nokia N9 charge possible by nfc?!
 

Epic thread is Epic!

Re: Nokia N9 charge possible by nfc?!
 

I believe you are confusing “Inductive Charging” with NFC.

Re: Nokia N9 charge possible by nfc?!
 

Wireless charging of mobile devices is picking trip, the upcoming Nokia's flagship Lumia 920 about to be factory-Qi-compatible. Now Renesas announces three semiconductor devices that use the wireless store up to 10 centimeters distance antennas, which are also suitable for Nahfunktechnik NFC. For samples of the three controller chips will each Renesas have $ 6 - that would be for the series products but probably too much. The mass production is scheduled for the 2013th

The tiny controller chip NF20 assumes the NFC communication, the transmitter controller controls R2A45801 through MOSFET RJK1028 to the transmitting antenna and in the mobile device the R2A4570 sits as a receiver. It includes a charging circuit for a single lithium-ion cell (3.7 volts), but also provides DC voltage to the device, as well as 1.8 to 3 volts for the RF20 on the receiver side. Also assumes the R2A4570 switching between different charging sources such as (micro) USB port or charger input.

Renesas specifies the communicable charging power not exactly, probably it is not higher than that of Qi, ie less than 5 watts. Thus, the loading of a typical smartphone battery would last with 5.5 Wh capacity significantly more than 1 hour, if we include loading and transformer losses. IDT has therefore announced in March a Qi-compatible IC couple that is in a proprietary mode create about 7.5 watts.

Re: Nokia N9 charge possible by nfc?!
 

I agree...
NFC is very similar to BT... At least when transferring files, it works only as a "hand-shake" mechanism...

Later,
Chinoman10.

Re: Nokia N9 charge possible by nfc?!
 

How it's a magnetic communications antenna possibly going to charge by transferring electrons?

It s not impossible, theoretically, you'd need some heavy modifications and charging times would be in excess of 7 years.

Re: Nokia N9 charge possible by nfc?!
 

Wow, seems legit

Re: Nokia N9 charge possible by nfc?!
 

warypopp is right. You can get up to 1W via NFC.
Question is, is the HW of the N9 designed to do this... no idea ?!

Re: Nokia N9 charge possible by nfc?!
 

warypopp is right.
You can get up to 1W via NFC.
Question is, is the N9 HW designed for this prupose...
I doubt it.

Re: Nokia N9 charge possible by nfc?!
 

yeah, and wi-fi combined with a repeater and your battery is full in 2 minutes.

Re: Nokia N9 charge possible by nfc?!
 

NFC intrinsically means wireless power transmission.
Yes, how do you think the NFC cards or NFC tags work? One device needs to power them up.
Now, such feature would be great, but I doubt N9 has the HW for this.

Re: Nokia N9 charge possible by nfc?!
 

I don't understand of what you guys are talking, but NFC hardware is not for charging phones or any device, NFC is just comunnicating hardware in between two devices that sends/recieved data requested...it can activate a charging device if nokia has planed for it....but as much as i have see a video on youtube dismantling N9? i saw the wires built in it i gues 99% was for charging purpose...but anyway...what do you need that kind of charging...i guess is slower than USB cable that takes 3h to cimplet charge your phone...and charging pad will take longer for sure.
Otherwise it is posible to build one charging pad by yourself by using power of about 12v in mounted bunch of tiny wire..and hope your phone will activate charging...sorry for my grama...!

Re: Nokia N9 charge possible by nfc?!
 

http://www.youtube.com/watch?feature...&v=kDCB3g4Qcf8 :eek:

Re: Nokia N9 charge possible by nfc?!
 

Yep, it was described somewhere a while back. But it requires modding inside housing and it's not via NFC.

Re: Nokia N9 charge possible by nfc?!
 

n9

lumia 800

no how can we use the Qi standard? maybe take apart an 820 back cover

or we make our own
attach a coil into these
http://www.mouser.com/new/texasinstr...wirelesspower/

Re: Nokia N9 charge possible by nfc?!
 

I would never take my Nokia n9 apart.:eek:

it's kind of crazy because I'd rather have a cable to charge it:D

Re: Nokia N9 charge possible by nfc?!
 

I apologise for waking up this old thread... Charging via NFC (instead of Qi, or besides Qi) is possible. If the receiver is inclined to use the power received to charge the battery. And the power is usually not higher than 1W, as KTy noted.
Benefits of NFC-enabled wireless charging over lower operating frequencies typically used in wireless charging include lighter antennas, and lower parasitic heating of metallic stray objects.
Besides, adding Near-Field Communication to N900 would be a benefit by itself.
The question is: would adding NFC-antenna to N900, and finding an external NFC-charger, be easier than doing the same with an Energiser Qi wireless charging kit? And the notable disadvantage of NFC-charging is relatively low charging power level (between 0.1W and 1W, while Qi is supplying around 5W?).
I am rising this question because I see the ubiquitous MIFARE and other ISO/IEC 14443-based contactless smart cards, and I hope that it would be possible to charge a mobile phone, when needed, from one of the terminal readers. Clutching at straws, yes, but these terminals seem to be more compatible with each other than power grid in different countries.
Still, as NFC-charging is slow... When you have more than enough power for your needs, an interesting feature would be to communicate with other NFC-enabled devices, including, with appropriate programming, the validators within buses, trams, trains and boats, or the cards within your wallet. However, the protocols of this widespread devices are quite complicated, I expect, as they wish to secure the payment systems from possible cheating.
Still, even ePassport chips can have their data cloned and altered.
Best wishes.