# Stepdown transformer in Proteus – How to Simulate AC voltage

In this tutorial, you will learn how to stepdown transformer in Proteus. You will also learn how to calculate the various parameters needed to simulate a stepdown voltage transformer in Proteus circuit simulator.

Before we delve into the simulation, let us have a basic understanding of what a transformer s all about.

## What is a transformer?

A transformer can be defined as a passive electronic component or device that transfers electrical energy between circuits, through the process of electromagnetic induction.
A transformer can come as a Step-up transformer, where a smaller voltage value is transformed to a lager voltage value. Or a buffer transformer, which serves as an isolation device between two circuits, or a Stepdown transformer, in which voltage is reduced from a higher value to a lower value, and it is this type of transformer we shall use to design our linear power supply.

## What is a stepdown transformer?

A step down transformer is a type of transformer that has the ability to transform high alternating voltage to a low alternating voltage. The step down voltage transformer comes in various sizes depending on the rated current value and the thickness of the conductor used to make the transformer coils. A transformer has two coils, the primary coil and the secondary coil. The primary coil is the coil on the input side of the transformer, while the secondary coil is the coil on the output side of the transformer.

For a step down transformer, the number of turns of the primary coil is larger than the number of turns of the secondary coil. While for the step up transformer, the number of turns of the primary coil is smaller than the number of turns of the secondary coil.

## Calculations to obtain values for the stepdown transformer simulation

If you encounter any difficulties, do not hesitate to notify me.