DC Charger Voltage Drop? Answered
Hey all! Long-time lurker, first-time poster. I don't have any instructables up on the site, but I have used many and I do have a biting question....currently, I am trying to create a USB car charger for my MP3 player out of an old CD Car Power Adapter.
The MP3 player is a Creative Zen V, so it, of course, usually just charges on my computers with a USB to Mini-USB cable. In the next few months, I am picking up a new stereo for my car with an Aux. input and as I like recycling anything I can, I figured I could just make a charger myself so I could keep my player charged when I'm driving. The old CD Car Power Adapter in question has an output of 6V DC at 500ma. From my research, USB operates on 5V DC at a maximum current of 500ma, so the adapter I have seems almost perfect...?
My question is this, how would I lower the voltage of the adapter from 6V to 5V? My second question is, I've read conflicting information on a number of sites....so, IS my information that USB 2,0 operates at a maximum of 500ma correct? If any of you folks would happen to know, and be so kind as to answer, I would be very grateful!
I don't want to end up accidentally frying my player!