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The document outlines a project on the study and construction of a half-wave rectifier, detailing its objective, theory, materials, procedure, observations, and results. It explains how a half-wave rectifier converts AC to pulsating DC using a p-n junction diode and includes steps for constructing the circuit. The project concludes that the rectifier effectively blocks the negative half-cycle and that a capacitor can be used to reduce output ripple.

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alam.arsh1205
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9 views10 pages

Document 17

The document outlines a project on the study and construction of a half-wave rectifier, detailing its objective, theory, materials, procedure, observations, and results. It explains how a half-wave rectifier converts AC to pulsating DC using a p-n junction diode and includes steps for constructing the circuit. The project concludes that the rectifier effectively blocks the negative half-cycle and that a capacitor can be used to reduce output ripple.

Uploaded by

alam.arsh1205
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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STUDY AND CONSTRUCTION OF A

HALF-WAVE RECTIFIER
Session: 2025 – 26

Prepared by: …………......…………….


Class: XII –

Roll no. ________


INDEX

1. Certificate
2. Acknowledgement
3. Objective
4. Introduction and Theory
5. Materials required
6. Procedure
7. Observations and Data Analysis
8. Results and Conclusion
9. Bibliography

CERTIFICATE

This is to certify that the Physics project titled “Study and Construction of a
Half-Wave Rectifier” has been successfully completed by Arsh Alam of class
XII –A under the guidance of Ms. Darakshan Gupta in particular fulfillment of
the curriculum of CBSE leads to the award of the annual examination of the
year 2025 – 2026.

Teacher In charge

ACKNOWLEGEMENT

I would like to express my sincere gratitude to our Principal, Subject Teacher, and
my Parents for their support and guidance throughout this project. I am also
thankful to the sources and reference materials that helped me understand the topic
in depth.

OBJECTIVE

To study and construct a half-wave rectifier.


INTRODUCTION AND THEORY

A Half-wave rectifier is a device that converts Alternating Current (AC) to Direct


Current (DC). In a Half-wave rectifier, only one half-cycle of AC is converted to
DC, and the other half-cycle is blocked. Therefore, the output waveform produced
by a half-wave rectifier consists of ripples of positive half-cycle of the input
waveform and it is called pulsating DC. In a half-wave rectifier, a p-n junction
diode is used as a rectifier. It has a relatively simple circuit consisting of a p-n
junction diode connected in series to a load.

Principle: Based on the unidirectional property of a PN junction diode which


conducts during forward bias and blocks during reverse bias.

MATERIALS REQUIRED

• Transformer (230V to 12V)

• PN junction diode (e.g., 1N4007)

• Load resistor (e.g., 1kOhm)

• Breadboard and wires


• Multimeter or CRO

• Capacitor (optional, for filter

PROCEDURE

• Connect the transformer primary to AC mains.


• Connect the secondary winding to a diode in series with a load resistor.
• Connect the cathode of the diode to the resistor and then to the ground.
• Observe the output across the load using a multimeter or oscilloscope.
• (Optional) Add a capacitor across the load for filtering.
• Record the input and output waveforms.

Labeled Circuit Diagram-

Observations & Data Analysis

Parameter Input (AC) Output (DC)

Voltage
Peak Voltage
Output Waveform
With Filter

Results & Conclusion

• The output voltage obtained was unidirectional.


• The negative half-cycle was blocked.
• The rectifier successfully converted AC to pulsating DC.
• The use of a capacitor reduced output ripple.
Bibliography

• NCERT Physics Textbook – Class XII


• www.electronics-tutorials.ws
• www.geeksforgeeks.org/
• www.electrical4u.com/
• Chat GPT

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