A transformer is basically an electric device intended to transfer electric power from one electric circuit to another, without changing its frequency. Most widely used are the transformers for transmitting electric energy to houses from power stations, while others may be used in electronic appliances for the purpose of regulating voltage. Voltage needs to be regulated because the electrical appliances’ requirement is different from that of the electric current supplied. Hence regulators are fitted along with appliances to control the supply of current to avoid any short circuiting.