... on request) 5.CE 1. TC Step-up/down transformer:TC Step-up/down transformer is specially designed for ... AC220V or 110VThe transfomer is an ideal of AC step-up/down power supply,with advantages of no ... 5. Application: Computers, Duplication, ILLumination system, Medical instrument Refrigerator,Safety warning equipment, Program -controlled telephone, Experimental instrument, Communication system, ...