AjithC - thank you but i know this much. I am wondering if someone could give me an example of how the circuit should look. i noticed the 7805's and 7812's have 3 connectors, how would i go about setting these up? which part goes to what?
uart- yes, i know it is. it is a DeWalt drill battery...
i am beginner in electrical engineering and am doing it has more of a hobby, therefore i have no books to study from. but i am trying to power a 5 Volt USB Hub and a 12 Volt Cigarette Lighter from a car, with an 18 Volt Battery. Can anyone show me an example of how to set this circuit up...