Question

Why Step Down Transformer is Used in Rectifier

Answer 1

Rectifier:

1. It is a device used to convert an oscillating AC source into a constant DC output.

Transformer:

1. It is a passive device that covers voltages from low to high or high to low.
2. A step-down transformer converts high voltage to low voltage.

Explanation:

1. In a rectifier, we receive an oscillating AC source which has to be converted into a constant DC source to do that we need to convert the high voltage to a constant low voltage
2. Wiring in the step-down transformer is in the ratio $N:1$, which reduces the voltage $N$ times.
3. A step-down transformer acts as a voltage regulator in a rectifier.

The main use of a step-down transformer in a rectifier is to act as a voltage regulator.