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!