Project Report Full Wave Rectifier


Acknowledgement

Aim

Introduction

Working of full wave rectifier

Output waveforms

Full-wave Rectifier with Smoothing Capacitor

Advantages

Material required

Circuit Diagram

Resources


Acknowledgement

I would like to express my special thanks of gratitude to my teacher (Name of the teacher) as well as our principal (Name of the principal) who gave me the golden opportunity to do this wonderful project on the topic (Write the topic name), which also helped me in doing a lot of Research and i came to know about so many new things I am really thankful to them.

Secondly i would also like to thank my parents and friends who helped me a lot in finalizing this project within the limited time frame.


Aim

Aim of this project is to demonstrate the working center taped full wave rectifier with smoothing capacitor.


Introduction

The process of converting the AC current into DC current is called rectification.

A full wave rectifier is a type of rectifier which converts both half cycles of the AC signal into pulsating DC signal.


Working of full wave rectifier

The center tapped full wave rectifier uses a center tapped transformer to convert the input AC voltage into output DC voltage.
When input AC voltage is applied, the secondary winding of the center tapped transformer divides this input AC voltage into two parts: positive and negative.
During the positive half cycle of the input AC signal, terminal A become positive, terminal B become negative and center tap is grounded . The positive terminal A is connected to the p-side of the diode D1 and the negative terminal B is connected to the n-side of the diode D1. So the diode D1 is forward biased during the positive half cycle and allows electric current through it.

On the other hand, the negative terminal B is connected to the p-side of the diode D2 and the positive terminal A is connected to the n-side of the diode D2. So the diode D2 is reverse biased during the positive half cycle and does not allow electric current through it.

The diode D1 supplies DC current to the load RL. The DC current produced at the load RL will return to the secondary winding through a center tap.

During the negative half cycle, current flows only in the lower part of the circuit while the upper part of the circuit carry no current to the load because the diode D1 is reverse biased. Thus, during the negative half cycle of the input AC signal, only diode D2 allows electric current while diode D1 does not allow electric current.

Thus, the diode D1 allows electric current during the positive half cycle and diode D2 allows electric current during the negative half cycle of the input AC signal. As a result, both half cycles (positive and negative) of the input AC signal are allowed. So the output DC voltage is almost equal to the input AC voltage.


Output waveforms

The first waveform represents an input AC signal. The second waveform and third waveform represents the DC signals or DC current produced by diode D1 and diode D2. The last waveform represents the total output DC current produced by diodes D1and D2.


Full-wave Rectifier with Smoothing Capacitor

 

The smoothing capacitor converts the full-wave rippled output of the rectifier into a more smooth DC output voltage.


Advantages

  • High rectifier efficiency
  • Low power loss
  • Low ripples

Material required

Center tapped transformer:- When an additional wire is connected across the exact middle of the secondary winding of a transformer, it is known as a center tapped transformer.

Diode:- A diode is an electronic component with two electrodes. It allows electricity to go through it only in one direction.

Resistor:- The resistor is a passive electrical component to create resistance in the flow of electric current.

LED:- An LED produces light when electricity flows through.

Soldering Iron:- To solder the various components used in this project.

Capacitor:- A capacitor is a two-terminal, electrical component. Along with resistors and inductors, they are one of the most fundamental passive components we use.


Circuit Diagram

full-wave-rectifier-circuit


Resources