Schemes for Nokia USB Charger

[cliffordb]

Hi All

Was wondering if anyone had the schems for making a USB charger for Nokia phones would apreciate a copy.

Would like to use the usb port on my laptop while i use my phone as a modem and this drains the battery.

Thanks

Cliffordb

[pico]

connect 3v6 zenner diode across +5V and GND lines of your usb port, then plug that straight to your phone.

zenner and phone are in parallel; 3.6V at diode= 3.6V at phone..

[cliffordb]

Hi thanks for the reply is it possible for you to draw a diag of this if you dont mind .

Thanks

[cliffordb]

PICO thanks for the explanation but am a bit thick when it comes to electronics could you please give me a diagram if possible.

Thanks

[pico]

mate i cant be bothered to draw scheme for this, just read..

you take two lines from your usb port, +5V and gnd lines.
for usb port pinouts search the net

connect a 3v6 zenner diode across those lines, ie solder one end of diode to one wire, other end to other wire.

connect nokia charge to end of these lines

use your head to get + and - correct

[ceanth]

i have a nokia usb charger for sale if ur interested. I bought it for £10 brand new, from my mate, and used it a few times on my 6210, then bought a 6610 and it didnt seem to work on that, it works on "3210, 3310, 8210, 8250, 8890, 9410" (according to the box)

I think all the old phones will work on it but not the new ones, if you want it for say £5 i can sort it out for you as i dont have a 6210 anymore. pm or mail me if you want it.


also its one of those fast chargers

ceanth

[housin]

u need to conect 1 oum or 2 resistor b4 the diod if u didnt the diod will damage cuz the diod only 300ma and the computer bower is 5a so no way so the resistor will get some load .

[sergo_zmeia]

Hi!
If You use the charger input of the phone You can do it without any additional elements....just connect properly the positive and negadive outs of the USB to charge conector...the USB i9s 5V and it is ok couse the charger provids aprox. 7.5V .....so You cant damage Your phone it can take approx. 15v throught the charger input...
Good luck!
Regards!
Sergo_Zmeia

[cliffordb]

Thanks to all of you for your help have managed to make one and works fine i realy apreciate all your help..

[FusiveiS]

hi! (i think that's my first post!) :)
ok, u did the cable and it worked but, with witch phone? and with the 1-2ohm resistor or not? it's something like my scheme? i realy want a usb charger to my 6610 Nokia phone! so, anyone could help me?

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http://fusiveis.net/nokia_usb_charger_schem_by_fuzy.jpg

[bradysarlo]

This thread is 11 months old.

[gta18]

the zener should be the other way around, or else you would just get the forward voltage of the diode and not the threshold of 3.6v which is what you want. :)

[danwood76]

You dont need the zener in there at all

just plug the USB straight into the phone and voila it will charge
the only thing I would do is put a power diode in the 5v line to limit the current slightly

regards,
Danny