Step down transformer is one of the main types that are being used to decrease the voltage. As the name shows, reducing the electric power is one of the main function of this device. This is a machine whose secondary current is less than its primary current.

1. Step down Transformers & its usage
Transformer is a machine for increasing or decreasing the voltage of a discontinuous electric
indicator. The transmission and supply of voltage over long distances will not be possible
without this device. Step down transformer is one of the main types that are being used to
decrease the voltage. As the name shows, reducing the electric power is one of the main
function of this apparatus. For example: Suppose you are using a kind of product that requires
only 110v but the main power diffusion is 220v, then it becomes mandatory for you to use a step
down transformer. This is a machine whose secondary current is less than its primary current.
It can be said that a step down transformer changes electrical current from a higher level or phase
configuration to a lower level. They involve several features like electrical isolation, voltage
distribution and control. They are well planned and designed on the code of magnetic stimulation
between coils to change voltage or current level. This type of device is deliberately designed to
trim down the electrical energy from the main winding to the secondary winding.
Similarly, there is another type of machine designed to increase the power from the main
windings to the secondary windings called step up transformer. This is a kind of device that steps
up the electrical energy to higher a voltage. An apparatus in which the secondary current is high
than the main current is called a step-up transformer and if the secondary current is lesser than
the main current, the device is named as a step-down.
If power is applied to one winding or primary circuit, it magnetizes the iron core that transmits
voltage in the secondary winding. It is important that an electrical transformer have to be
competent and should drive away as little energy as sufficient in the form of temperature
throughout the alteration process. If you opt for copper coils than aluminum or other winding
metals, then it is possible to reduce the heat and increase transformer efficiency. Initially, you
may feel that copper windings are more costly, but you can save huge amount of money on the
operational cost in long run and it will balance for the higher cost paid initially.
Usually, step down transformers are prepared with two or more winds of shielded cable around a
core that is made of iron and they function in many areas. They will be required by the
residential or industrial user, as they used to decrease the power and increase the voltage. The
big units are utilized in electric power systems, and the small units in electronic mechanisms.
Residential and Industrial transformers that functions at the frequency can be 1- phase or 3-phase
and designed to manage high currents or voltages. Electric transmission needs high voltages,
therefore step up and step down transformers are needed.