Operates on 220V A.C. mains, 50Hz. Consists of E & I laminated cores, alloy stand, one primary coil & two secondary coils to produce 6V and 12V at 2A can be mounted one by one, over the primary coil. The mains coil is provided with Imeter of two core cable and secondary coils are mounted with 4mm socket terminals. Students can easily mount or demount the transformer unit to get a 6V or 12V power supply as per requirement.