Battery Chargers » iPhone http://ebatterychargers.com Tue, 27 Jul 2010 11:48:32 +0000 en hourly 1 http://wordpress.org/?v=3.1 iPhone Charger http://ebatterychargers.com/iphone-charger-135.html http://ebatterychargers.com/iphone-charger-135.html#comments Mon, 30 Mar 2009 20:38:30 +0000 eBatteryChargers.com http://ebatterychargers.com/?p=135 chargerThis is a simple DIY iPhone charger circuit that can be built with a few resistors.
First, you need to buy 4 resistors with this values: 2 of 50 kΩ, 1 of 100 kΩ and 1 of 150 kΩ.
Ok, you got 4 resistors, now you need a 5V power supply, you guessed it, another USB cable. An USB cable has +5V on pin 1 and -5V (or ground) on pin 4.

If you can handle a cutter, gently cut off the isolation and reveal the wires inside. See what colors the wires have that are connected at pin 1 and 4. Note or remember and then with an soldering gun solder the cables to the iPhone charger circuit like in the schematic.

iPhone charger circuit

iphone charger

If you don’t want to cut the iPhone cable, buy an USB extension cord.
Make sure the positive and negative terminals are connected correctly and use a voltmeter to make sure everything is correct.

usb pinout

usb pinout

We received informations that you can use it as an iPhone 3G charger but we cannot guarantee it.

Disclaimer: I will not be responsible if you destroy you iPhone with the charger information posted here.

iPhone chargers photo gallery

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