Transformers

• Transformers are used to convert high voltage AC to low voltage AC or 
• Low voltage AC to high voltage AC.
• Carries the voltage in equal manner.

Parts of Transformer and Working:

Working :

• Transformer works on the principle of electromagnetic induction.
• Where coil produces the magnetic flux around it for short distances.
• The secondary coil which in the region of the magnetic flux receives the magnetic energy and converts it into the voltage.

Primary Coil:

• This is the coil where input is connected to it.
• Power when passing through the coil produces magnetic flux.

Core:

• Core is a solid block made by group of silicon steel lamination.
• Induce to stop current loss.
• Carries magnetic flux produced by coils.

Secondary Coil:

• Load is connected to this coil.
• Magnetic flux  produced by the primary coil is transformed into secondary coil.
• Magnetic flux in coil is converted to voltage.

Types of Transformer:

Step Up Transformer:

• Step Up Transformer is nothing but converting low voltage into the high voltage.
• Step Up Transformer primary coil winding is less compare to the secondary coil winding.
• More the winding, higher the voltage.

Step Down Transformer:

• Step Down Transformer converts High Voltage into the low voltage.
• Step Down Transformer primary coil winding is more compare to the secondary coil winding. 

Transformers depending on Winding:

Core : 

• Winding the  copper coil either side of the core is the core winding.
• This used for theoretical representation, in practical it never used due to loss of induced emf.

Shell:

• Where secondary coil is winded over the primary coil.
• Practically this type of transformers are used.