Introduction of a Transformer

•Difference between Step-up and Step-down Transformer.

     Step-up Transformer- if the number of loops in the secondary coil is greater than that in the primary coil so that the induced voltage is greater than the input voltage.

     Step-down Transformer- a transformer that has less loops in the secondary than that in the primary, the induced voltage in the secondary coil is less than that in the primary coil.

•Appliances or Equipment that requires transformers.

       The appliances or equipment that requires transformers are Television, Sound system, Refrigerator, and etc., which  needs a voltage except 220 V source.

•Relation of the voltage and current in the primary and secondary coils to the number of turn in each.

       If the number of coils in the primary coil is lesser,  its voltage and current is also lesser and if it have many loops its voltage and current is greater because the more the number of coil the more the current and voltage flows and has a greater supply. And the same as in the secondary coil.