16V 4.5A 72W switching power supply – best for track power. Delivers about 15 V to track when used with our booster above. Plug size is 5.5/2.1 mm. Power supply comes with a US 110V plug. By swapping the power cord can be used with 100-240V~50/60Hz power. If you add the power jack to screw terminal adapter below you can use this as a general purpose power 16V supply. Peak-to-peak output from DCC booster will be about 14.5-15V varying with the load.