Ok Im using a 5 volt 3 pin ic regulator. So the circuit starts out with 5 volts. Its rated at 5 volts 400ma max. What I am trying to do is use this plus some resistor and a 3 leg adjustable resistor to get 100 ma max and around 4.5 volts all the way down to 0 volts 0 amps. This is what I have come up with this far. All i could think to use is paint. I have the 4.4 volts ruing threw the adjustable resistor and the arm that slides over the resistor is the out put. Im just wondering if I did the math correct or if this will even work?