NEEEDDD HELP

[Kpanchal]

Hi guys,

We are students from a business school. For a project we need to create a product that really works. we are hoping to create a portable charger because we all have a passion for computers. We are really stick on getting the right resistors on apple products. We are using a 9V battery, l7805 voltage regulator, 2 75K resistors, 2 49.9K resistors, and a felmale usb. If anyone could help that would mean a lot to us as we have been trying to get this right for the last 4 months and had no progress

Once again a very big thank you!

[adafruit_support_bill]

We are using a 9V battery, l7805 voltage regulator, 2 75K resistors, 2 49.9K resistors, and a felmale usb.

I think the problem is the 9v battery. It will not supply enough current to charge an iPhone. You need a battery that can supply at least 500mA. 6x AA NiMH cells (7.2v) would probably work better.

[Kpanchal]

would it work if i use 2 AA batteries and a 5V boost converter

[adafruit_support_bill]

Yes. That is what our MintyBoost kit does: https://www.adafruit.com/products/14

[Kpanchal]

Would I need something on every pin on the booster or would it work with just the input, gnd and output

[adafruit_support_bill]

Would I need something on every pin on the booster

There are many boost converters with different requirements. Our MintyBoost has a detailed tutorial that explains how to build and use it.
http://www.ladyada.net/make/mintyboost/