Step-down Transformer

A step-down transformer is a transformer that has more turns wound around on the primary coil than on the secondary coil and therefore the voltage induced in the secondary coil is smaller than the primary coil voltage. So if there are 2,000 turnings on the primary coil and 200 turnings on the secondary coil, then the voltage induced in the secondary coil is ten times smaller than the primary coil voltage. In other words, the voltage output in a step-down transformer is smaller than the voltage input.