Project Hub /Test & Measurement Instrumentation/Oscilloscopes & Logic Analyzers/Study Of Rectified Waveforms Using Arduino Uno

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₹500 – ₹1,500

3 – 6 Hours

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Study Of Rectified Waveforms Using Arduino Uno

An educational project designed for electronics laboratories to study half-wave and full-wave rectified waveforms using an Arduino Uno and a relay module.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

Arduino UNO R3 Board (Compatible) – ATmega328P Microcontroller with USB Cable Rs. 999.00
5V 1 Channel Relay Module Rs. 45.00
10pcs - 220 ohm 1/4 W Resistor Set Rs. 39.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

This list includes a generic resistor set as a placeholder — it is not matched to the exact value or part number this circuit needs. The correct one is specified on the original source page linked above; check it before buying.

We don't carry yet: Transformer
Diodes (1N4007 / 1N4148 / Schottky / Zener)
Capacitors
Perfboard / Veroboard / Stripboard

Browse all components

How It Works

The Study Of Rectified Waveforms Using Arduino Uno project is designed to demonstrate AC-to-DC power conversion principles using a centre-tap transformer and diode arrangement. A 230V mains voltage is stepped down by the centre-tap transformer (230V to 9V-0-9V) to provide safe, lower-voltage AC signals. By utilizing 1N4007 diodes, the circuit can be configured to rectify the AC waveform into pulsating DC. A dual channel relay module, controlled via the Arduino Uno, allows for automated switching between different rectification configurations, such as half-wave and full-wave rectification. An electrolytic capacitor (100µF, 25V) is used for filtering and smoothing the rectified output voltage. Finally, students use an oscilloscope (CRO) connected across a resistor load on the Veroboard to visually analyze and compare the input AC waveform against the resulting half-wave and full-wave rectified DC waveforms.

Why Build This

Ideal for undergraduate engineering and power electronics laboratories to visually verify theoretical AC-to-DC conversion concepts using a hardware oscilloscope.

Bridges software control (Arduino Uno and relay switching) with fundamental analog power supply design.

Real-World Application

Used in educational laboratories of ITIs, polytechnics, and engineering colleges to teach power electronics and AC-to-DC conversion principles.

Skills You'll Learn

AC-to-DC power conversion

transformer step-down principles

diode rectification analysis

relay module interfacing

oscilloscope waveform probing

analog filter capacitor application

Safety Precautions

Exercise caution when dealing with mains voltage step-down transformers and high AC voltages.

Technology Tags

ARDUINO

RECTIFIER

TRANSFORMER

RELAY MODULE

DIODES

OSCILLOSCOPE

POWER SUPPLY

WAVEFORM ANALYSIS

Frequently Asked Questions

Why is a centre-tap transformer used instead of a standard single-output transformer?

A centre-tap transformer (9V-0-9V) provides two symmetrical AC voltage phases relative to the ground reference, which is necessary for implementing full-wave rectification circuits using two diodes.

What is the role of the Arduino Uno in this project if the rectification is analog?

The Arduino Uno interfaces with the dual channel relay module to automatically switch between different circuit configurations or loads, allowing for streamlined testing of half-wave and full-wave modes.

Can I use an oscilloscope to view the signals directly?

Yes, an oscilloscope (CRO) is connected across the output resistor on the Veroboard to observe real-time voltage changes, ripple voltage, and the impact of the electrolytic capacitor on the rectified waveform.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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