“LONE STAR BIG DOWN CONVERTER; FAA TSO C-71, DO-160G, DC TO DC Step Down Converter. Main converter output is for 28VDC to 13.8VDC to a maximum of 10/12P Amps which operates 13.8 VDC equipment in a 28 volt aircraft. Additional outputs for the STEP DOWN are 5, 7.5, 9, 13.8, 16, 19, 24, 28 VDC.” has been added to your cart. View cart